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Model 8635-C SUREFLOW Room Pressure Controller

1. 46 Appendix B Example of 03 Read Holding Registers function format This example reads the minimum ventilation setpoint and the minimum temperature setpoint QUERY Field Name Slave Address Function Starting Address Hi Starting Address Lo No Of Registers Hi No Of Registers Lo Error Check CRC Network Communications Hex 01 03 00 05 00 02 RESPONSE Field Name Slave Address Function Byte Count Data Hi Data Lo Data Hi Data Lo Error Check CRC Hex 01 03 04 03 1000 04 BO 1200 47 Wiring Information Back Panel Wiring DIM Description Input Output Communication Input 24 VAC to power Digital Interface Module DIM and sensor NOTE 24 VAC becomes polarized when connected to DIM 3 4 24 VAC power for Pressure Sensor 0 10 VDC pressure sensor signal 8 10 0 10 VDC general exhaust control signal 11 12 Input Non powered switch input When input is closed these software items are enabled REMOTE LOW ALARM REMOTE HIGH ALARM and DOOR DELAY 3 14 Output Low alarm relay N O closes in low alarm condition See menu items LOW ALARM REMOTE LOW ALARM 5 RS 485 communications between DIM and pressure sensor 1 25 26 Output High alarm relay N O closes in high alarm condition See menu items HIGH ALARM REMOTE HIGH ALARM WARNING The wiring diagram shows polarity on many pairs of pins
2. H Damage to the DIM may occur if polarity is not observed 48 Appendix C Jumper Wiring Information Damper systems The Model 8635 SUREFLOW Room Pressure Controller modulates electric or pneumatic actuated dampers mounted in the exhaust and supply ducts The TSI damper actuators are shipped configured jumper installed to be mounted in the exhaust duct normally open on pneumatic If the damper is mounted in the supply duct the supply actuator will need the jumper changed The menu item CONTROL SIG CONTROL menu reverses both control outputs so if only 1 damper rotates incorrectly the jumper must be changed WARNING A jumper must be installed for the actuator to operate Table B1 Jumper Wiring Configurations Electric Actuator P N 800360 Damper Location Jumper Location Supply Air No Jumper Exhaust Air 9 10 reverse Pneumatic Actuator P N 800119 Damper Location Jumper Position Supply Air 9 10 reverse Supply Air 8 9 direct Exhaust Air 8 9 direct Exhaust Air 9 10 reverse Damper Type Normally Open N O Normally Closed N C Normally Open N O Normally Closed N C Damper position when pressure is lost TSI ships Normally Open dampers unless otherwise specified Wiring Information 49 WIG JINGOW JOV4YNSLNI IVLI9IG 661008 N d 318vV9 indino 722008 N d YITIONLNOD 4311041505 CD 219 NI 073 Alddns 7031405 AlddNS NI 7041409 98755 NI ino f
3. CODE END OF MENU ITEM DESCRIPTION ITEM RANGE DEFAULT VALUE The TEMP HIGH determines when the supply air changes from Off 0 10 VDC Off ventilation control mode VENT MIN SET to temperature heating mode TEMP MIN SET The higher the voltage the larger the span between ventilation mode and temperature mode When the thermostat signal is greater than the TEMP HIGH setpoint the TEMP MIN SET is the supply air minimum VENT MIN SET is not in use When TEMP HIGH is off the supply air is always in ventilation mode NOTE The thermostat is connected to the temp input pins 23 amp 24 The 0 5 VDC or 10 VDC thermostat signal is constantly monitored by the DIM and is compared to the TEMP HIGH set point The ACCESS CODE item selects whether an access code pass ON or OFF OFF code is required to enter the menu The ACCESS CODE item prevents unauthorized access to a menu If the ACCESS CODE is ON a code is required before the menu can be entered Conversely if the ACCESS CODE is OFF no code is required to enter the menu The END OF MENU item informs you that the end of a menu has been reached You can either scroll back up the menu to make changes or press the SELECT or MENU key to exit out of the menu 9I OA Wed ALARM MENU MENUITEM SOFTWARE ITEM DESCRIPTION ITEM RANGE DEFAULT NAME VALUE LOW LOW The LOW ALARM item sets the low pressure alarm set point Alow 0 to 0 19500 OFF PRESSURE ALARM alarm condit
4. Weg CALIBRATION MENU MENUITEM SOFTWARE NAME SENSOR ZERO SENSOR ZERO SENSOR SENSOR SPAN SPAN EXHAUST EXH FLO FLOW ZERO ZERO SUPPLY SUP FLO FLOW ZERO ZERO ITEM DESCRIPTION ITEM RANGE The SENSOR ZERO item is used to calibrate the SUREFLOW NONE pressure sensor A sensor zero should be established prior to adjusting the sensor span see Calibration section following menu item section The SENSOR SPAN item is used to match or calibrate the NONE SUREFLOW velocity sensors to the average room pressure velocity as measured by a portable air velocity meter A sensor zero should be established prior to adjusting the sensor span see Calibration section following menu item listing The EXH FLO ZERO item is used to establish the flow station zero NONE flow point A zero or no flow point needs to be established prior to using the flow measurement output see Calibration section following menu item listing All pressure based flow stations need to have an EXH FLO ZERO established on initial set up Linear flow stations with a 1 5 VDC output also need to have an EXH FLO ZERO established Linear flow stations with a 0 5 VDC output do not need an EXH FLO ZERO The SUP FLO ZERO item is used to establish the flow station zero NONE flow point A zero or no flow point needs to be established prior to using the flow measurement output see Calibration section following menu item listing All pressure based flow stations need to have a
5. of item values that can be selected Depending on the item type the values may be numerical specific properties on off or a bar graph 4 Part One Emergency Key Red with Black Letters EMERGENCY Key The red EMERGENCY key puts the controller into emergency mode If the room is under negative room pressure control the emergency mode will maximize the negative pressure Conversely if the room is under positive room pressure control the emergency mode will maximize the positive pressure Pressing the EMERGENCY key will cause the display to flash EMERGENCY the red alarm light to flash on and off and the audible alarm to beep intermittently To return to control mode press the EMERGENCY key or the RESET key Alarms SUREFLOW has visual red light and audible alarms to inform you of changing conditions The alarm levels set points are determined by administrative personnel Industrial Hygienists or the facilities group depending on the organization The alarms audible and visual will activate whenever the preset alarm level is reached Depending on the SUREFLOW items installed programmed alarms will activate when room pressure is low or inadequate when room pressure is high or too great or when the supply or exhaust air flow is insufficient When the laboratory is operating safely no alarms will sound Example The low alarm is preset to activate when the room pressure reaches 0 001 inches When the room pressure dro
6. AUDIBLE ALM ALARM DELAY DOOR DELAY MUTE TIMEOUT ACCESS CODE INTERFACE NET PROTOCOL NET ADDRESS ACCESS CODE CONFIGURE DISPLAY AVG UNITS EXH DCT AREA SUP DCT AREA FLO STA TYPE TOP VELOCITY ROOM VOLUME ACCESS CODE Menu item description located in Troubleshooting section 12 CALIBRATION SENSOR ZERO SENSOR SPAN EXH FLO ZERO SUP FLO ZERO ELEVATION ACCESS CODE DIAGNOSTICS CONTROL SUP CONTROL EXH SENSOR INPUT SENSOR STAT SWITCH INPUT EXH FLOW IN SUP FLOW IN TEMP INPUT LOW ALM REL HIGH ALM REL ACCESS CODE Figure 5 Menu Items Model 8635 C Controller Part Two 012 JVIIUYIA I T SETPOINTS MENU MENUITEM SOFTWARE NAME PRESSURE SET SETPOINT POINT REMOTE OR REM ALTERNATE SETPOINT PRESSURE SET POINT VENTILATION VENT MIN SUPPLY FLOW SET SETPOINT ITEM DESCRIPTION The SETPOINT item sets the pressure control set point The SUREFLOW controller will maintain the room pressure negative or positive under normal operating conditions This item is enabled when the SWITCH INPUT contact closure pins 11 and 12 is open or the RS 485 communications sends a command The REM SETPOINT item sets an alternate control set point The SUREFLOW controller will maintain the room pressure at the alternate set point when this item is enabled This item is enabled when the SWITCH INPUT contact closure pins 11 and 12 is closed or the RS 485 communications sends a command NOTE
7. Menu and Menu ltems 12 o eta iain 30 Maintenance and Repair 32 Troubleshooting Section sse 34 eR 43 amp bte e Peter E ttn esa 43 APPENDIX d mpET 44 Network 44 Modbus Communications 44 APPENDIX C 48 Wiring Information 48 peer O 53 ACCESS COGS ione det cove eth etd Desk stel Mir wl een 53 How to Use This Manual The SUREFLOW Operation and Service Manual is divided into two parts Part one describes how the SUREFLOW unit functions and how to interface with the device This section should be read by users facilities staff and anyone who requires a basic understanding of how the SUREFLOW operates Part two describes the technical aspects of the product which includes operation calibration configuration maintenance and troubleshooting Part two should be read by personnel programming or maintaining the unit TSI recommends thoroughly reading this manual before changing any software items NOTE This operation and service manual assumes proper SUREFLOW installation Refer to the Installation Instructions to determine if the SUREFLOW has bee
8. This is normal when no problems exist or when no communication is occurring Pressure sensor must be set for 0 10 volt output not 4 20 mA Check pressure sensor DIP switch 3 and make sure it is OFF see Figure 8 41 Symptom Possible Cause Corrective Action DIM does not respond to RS 485 communications DIM displays opposite pressure signal Alarm relays don t work DATA ERROR flashing on display Actuator hunting Display indicates steady pressure Displayed pressure wildly fluctuating 42 Network protocol is incorrect Incorrect network address Incompatible software Sensor direction is incorrect Alarms are turned off Incorrect wiring Relay may be defective DIM was hit by electrical disturbance Control system is unstable Control system is unstable Exhaust system unstable Supply or exhaust air is affecting the sensor Go into INTERFACE menu NET PROTOCOL item The protocol must match host system Select correct interface The network address at the building automation system and at the DIM must match The network address must be unique for each DIM Data sent to DIM may be in form that the SUREFLOW cannot recognize Pressure sensor must have DIP switch correctly set for proper sign display Verify DIP switch 4 is ON when sensor is mounted in the laboratory controlled space and OFF when sensor is mounted in corridor reference space See Figure
9. below a preset minimum CFM The controller will not allow the supply air damper to be closed further than the TEMP MIN SET set point If room pressure is not maintained at minimum temperature flow the general exhaust damper modulates open until pressure set point is reached A TSI flow station is required to make the flow measurement and enable this function The flow station and control damper must be mounted in the supply duct for this item to function properly The TEMP LOW item determines when the supply air changes from ventilation control mode VENT MIN SET to temperature cooling mode TEMP MIN SET The lower the voltage the larger the span between ventilation mode and temperature mode When the thermostat signal drops below the TEMP FLOW setpoint the TEMP MIN SET is the supply air minimum VENT MIN SET is not in use NOTE The thermostat is connected to the temp input pins 23 amp 24 The 0 5 or 0 10 VDC thermostat signal is constantly monitored by the DIM and is compared to the TEMP LOW set point ITEM RANGE DEFAULT VALUE 0 pressure based flow 0 station 400 2832 ft min 2 0 14 4 m s x duct area The duct area in square feet ft square meters m Linear based flow stations 0 to TOP VELOCITY times the duct area in square feet 02 square meters m Off 0 10 VDC Off 012 qponn 22 SI SETPOINTS MENU MENUITEM SOFTWARE NAME TEMPERATURE TEMP HIGH HEATING ACCESS CODE ACCESS
10. can be easily modified to fit your application The Technical section is separated into five parts that cover all aspects of the unit Each section is written as independently as possible to minimize flipping back and forth through the manual for an answer The Software Programming section explains the programming keys on the DIM In addition the programming sequence is described which is the same regardless of the menu item being changed At the end of this section is an example of how to program the DIM The Menu and Menu Item section lists all of the software items available to program and change The items are grouped by menu which means all set points are in one menu alarm items in another etc The menu items and all related information is listed in table format and includes programming name description of menu of item range of programmable values and how the unit shipped from the factory default values The Calibration section describes the required technique to compare the pressure sensor reading to a thermal anemometer and how to adjust the zero and span to obtain an accurate calibration This section also describes how to zero a TSI flow station transducer The Maintenance and Repair Part section covers all routine maintenance of equipment along with a list of repair parts The Troubleshooting section is split into two areas Mechanical operation of the unit and system performance Many external variables will affect how the
11. control problems configuration problems or interaction problems with the HVAC system The hardware test described in this section determines that all TSI mechanical components are functioning correctly The hardware test requires the diagnostics menu items to be accessed If you are unfamiliar with the SUREFLOW menus see Software Programming for keystroke procedure Troubleshooting the majority of problems is usually quick if the hardware test is followed Software and hardware problems are covered in the troubleshooting chart Pick the problem that most closely resembles your problem and review the possible symptoms and corrective action Software or system performance problems can and are affected by the supply air system exhaust air system or physical configuration of the room Separating TSI system problems from the HVAC system can sometimes be difficult TSI recommends confirming all hardware is operating correctly before troubleshooting software problems Hardware Test Three tests need to be performed in order to determine all hardware is functioning correctly The test are broken down into Confirming wiring is correct Confirming physical installation is correct Verifying mechanical components Confirming wiring is correct The most common problem with installed hardware equipment is incorrect wiring This problem usually exists on initial installation or when modifications to the system take place The wiring should be very c
12. device Using a block format will speed up the time for the data transfer The size of the blocks is limited to 20 bytes This means the maximum message length that can be transferred is 20 bytes The typical response time of the device is around 0 05 seconds with a maximum of 0 1 seconds Unique to TSI The list of variable addresses shown below skips some numbers in the sequence due to internal Model 8635 functions This information is not useful to the DDC system and is therefore deleted Skipping numbers in the sequence will not cause any communication problems All variables are outputted in English units ft min CFM or inches H O The room pressure control setpoints and alarms are stored in ft min The DDC system must convert the value to inches of water if that is desired The equation is given below Pressure in Inches H5O 6 2 10 Velocity in ft min 836 44 Appendix B RAM Variables RAM variables use the Modbus command 04 Read Input Registers RAM variables are read only variables that correspond to what is shown on the Digital Interface Module DIM display TSI offers a number of different models so if a feature is not available on a unit the variable is set to 0 Variable Name Variable Information Provided to Integer DDC system receives Address Master System Velocity of room pressure Displayed in feet per minute fg Pressure Room pressure Displayed in inches H5O Host DDC system must divide value by 100 000 to rep
13. menu Key Setpoints Alarm Configure Calibration Control 1 EMERGENCY TEST EMERGENCY AUX MENU 2 MUTE TEST MENU MENU MUTE 3 MUTE MUTE AUX MUTE RESET 4 MENU EMERGENCY MENU MENU EMERGENCY 5 AUX MENU MENU AUX AUX Interface Diagnostics 1 TEST TEST 2 EMERGENCY MUTE 3 AUX AUX 4 MUTE AUX 5 MENU MENU Access Codes 53 TSI Incorporated 500 Cardigan Road Shoreview MN 55126 U S A For current information Telephone 1 800 490 2811 toll free or 651 490 2811 Fax 651 490 3824 E mail answers tsi com www tsi com P N 1980274 Rev E Copyright 2006 by TSI Incorporated All rights reserved
14. set to 0 Address receives read only Control Device 1 5 8635 M read only 6 8635 C Emergency Mode 2 Emergency Mode Control 0 Leave emergency mode 1 Enter emergency mode Value will return a 2 when read Setpoint Pressure control setpoint Displayed in feet per minute Remote Setpoint Remote pressure control setpoint Displayed in feet per minute Minimum Minimum supply flow control setpoint Displayed in CFM Ventilation Supply in normal mode Flow Setpoint Minimum Minimum supply flow control setpoint Displayed in CFM Temperature Supply in temperature mode Flow Setpoint Low pressure alarm setpoint Displayed in feet per minute High Alarm High pressure alarm setpoint Displayed in feet per minute Remote Low Alarm Remote mode low pressure alarm Displayed in feet per minute setpoint Remote High Alarm 10 Remote mode high pressure alarm Displayed in feet per minute setpoint Min Supply Alarm 12 Minimum supply flow alarm Displayed in CFM EXAMPLE of 16 10 Hex Preset Multiple Regs function format This example changes the remote setpoint to 100 ft min QUERY RESPONSE Field Name Hex Field Name Hex Slave Address 01 Slave Address 01 Function 10 Function 10 Starting Address Hi 00 Starting Address Hi 00 Starting Address Lo 04 Starting Address Lo 04 No Of Registers Hi 00 No of Registers Hi 00 No Of Registers Lo 01 No of Registers Lo 01 Data Value High 00 Error Check CRC Data Value Low 64 Error Check CRC
15. the location of the digital display keypad and lights An explanation of the operator panel follows the figure 2 Line Digital Display Keys Figure 3 SUREFLOW Operator Panel Open Green Red light The green light is on when all the conditions for proper room pressure are adequate This light indicates the laboratory is operating safely If any of the room pressure conditions cannot be satisfied the green light turns off and the red alarm light turns on Operator Panel A cover hides the operator panel Sliding the door panel to the right exposes the operator panel Figure 2 Digital Display The alphanumeric digital display is a two line display that indicates actual room pressure positive or negative alarm status menu options and error messages In normal operation green light is on the display continuously scrolls information about room pressure and other variables programmed flow air changes per hour etc The variables that scroll depend on the options installed As an example if an alarm condition occurs the variable that normally scrolls STANDARD STANDARD NORMAL will change to read ALARM will state type of alarm low pressure high pressure flow NOTE When switch input pins 11 amp 12 is closed the word standard is replaced with remote on display When programming the unit the display will change and now show menus menu items and current value of the item depending on the specific progra
16. 0 19500 012 JVIIUYIA I LI ALARM MENU MENUITEM SOFTWARE NAME MINIMUM MIN SUP SUPPLY FLOW ALM ALARM ALARM RESET ALARM RESET AUDIBLE AUDIBLE ALARM ALM ALARM ALARM DELAY DELAY ITEM DESCRIPTION The MIN SUP ALM item sets the supply duct s flow alarm set point A minimum flow alarm is defined as when the supply duct flow is less than the MIN SUP ALM set point NOTE Supply air duct size SUP DCT AREA configure menu must be entered before MIN SUP ALM can be accessed The ALARM RESET item selects how the alarms terminate after the unit returns to control set point pressure or flow UNLATCHED alarm follow automatically resets the alarms when the unit reaches control set point LATCHED requires the staff to press the RESET key after the unit returns to control set point The ALARM RESET affects the audible alarm visual alarm and relay output which means all are latched or unlatched The AUDIBLE ALM item selects whether the audible alarm is turned ON or OFF Selecting ON requires the staff to press the MUTE key to silence the audible alarm Selecting OFF permanently mutes all audible alarms except when the EMERGENCY key is pressed The ALARM DELAY determines the length of time the alarm is delayed after an alarm condition has been detected This delay affects the visual alarm audible alarm and relay outputs An ALARM DELAY prevents nuisance alarms from people entering and leaving the laboratory The ALAR
17. 8 Press TEST key The individual alarm set points will display If all alarm set points are zero alarm relay is not active so relay will not be required to change state Check the wiring from SUREFLOW relay s output to the device that is connected to the relays Disconnect the wiring from relay contact pins 13 and 14 for low alarm relay and pins 25 and 26 for high alarm relay Go into DIAGNOSTICS menu LOW ALM REL or HIGH ALM REL Connect an ohmmeter to relay terminals to verify contact open and closes Press the A W key to manually trip the relay If relay responds contact opens and closes the device connected is incompatible or defective If relay doesn t respond relay is defective may be caused by incompatible device Replace DIM data may be lost or changed Review all configuration parameters DATA ERROR 1 removed by pressing the RESET key Go into CONTROL menu SPEED item Turn speed down until hunting is eliminated If speed is too slow review CONTROL menu items and adjust accordingly to eliminate hunting Go into CONTROL menu SPEED item turn speed down until fluctuation is eliminated If speed is too slow review CONTROL menu items and adjust accordingly until performance is adequate Turn DIM to emergency If pressure stabilizes this is not the problem Verify reference pressure is not fluctuating Check location of supply air diffusers and exhaust grilles They should be as far from pressure sensor as is real
18. CT AREA AREA ITEM DESCRIPTION The DISPLAY AVG item selects the display s averaging period The display averaging period is the length of time the room pressure has been averaged before being displayed The DISPLAY AVG item value may be set between 0 75 and 40 seconds The higher the averaging value the more stable the display The UNITS item selects the unit of measure that the controller displays all values except calibration span These units display for all menu items set points alarms flows etc The EXH DCT AREA item is used to input the exhaust duct size The duct size is needed to compute the flow out of the room This item requires a flow station to be mounted in the exhaust duct When a duct area is programmed the display will automatically scroll the actual exhaust flow as part of the display sequence If a zero value is entered the exhaust flow value will not scroll on the display If the DIM displays English units area must be entered in square feet If metric units are displayed area must be entered in square meters The SUP DCT AREA item is used to input the supply duct size The duct size is needed to compute the air flowing into the room This item requires a flow station to be mounted in the supply duct When a duct area is programmed the display will automatically scroll the actual supply flow as part of the display scroll sequence If a zero value is entered the supply flow value will not scroll on the displa
19. ELEVATION item in Menu and Menu items section for further information Enter the ELEVATION menu item Scroll through the elevation list and select the one closest to the building s elevation Press the SELECT key to save the data and exit back to the calibration menu Sensor Zero Slide open pressure sensor door and tape over 1 2 inch sensor orifice see Figure 6 Make sure pressure sensor orifice is taped over Sensor is located about 3 4 into housing Select SENSOR ZERO item Press SELECT key Sensor zero procedure which takes 120 seconds is automatic Press SELECT key to save the data Remove tape from sensor orifice and close pressure sensor door 30 Part Two FITITITI 555 Sliding Cover Pressure Sensor Figure 6 Pressure sensor door slid open Sensor span NOTE Always take a sensor zero prior to adjusting the sensor span A smoke test and a comparison measurement by an air velocity meter are required to calibrate the pressure sensor The air velocity meter only gives a velocity reading so smoke test must be performed to determine pressure direction WARNING The span can only be adjusted in the same pressure direction Adjusting span cannot cross zero pressure Example If unit displays 0 0001 and actual pressure is 0 0001 do not make any adjustments Manually change the air balance close or open dampers or open door slightly to get both unit and actual pressure to read in same direction
20. HOLIMS YOSNIS YOSNES OVA vZ 095008 N d Wolvniov 51419373 YOLVNLOV 9119373 SOLD TO PROJECT lt 8 JUHA 4 473 6 8 925008 N d TOT Fone 2k YOSN3S 3unss3ud NW OCME ed x l l x 2 O o N e l a WIRING DIAGRAM ELECTRIC TRANSFORMER P N 800414 717008 N d 872008 N d 3718702 NNOO 9 YINYOASNYYL 057008 N d zayo 5 1 n 1 OVA vZ 057008 N d 43 3035 TSI INCORPORATED SHOREVIEW MN 55126 TELEPHONE 651 490 2811 FAX 651 490 3824 MAIL SHIP TO 500 CARDIGAN ROAD Appendix C COPYRIGHT 2006 BY TSI INCORPORATED Figure 10 Wiring Diagram Damper System with Electric Actuator 9 10 01 50 tc l tc Z Ww e e a gt WIRING DIAGRAM PNEUMATIC o WIG FINGOW 39VJM31NI IW LI9IG 661008 N d 318V9 1ndlno 611008 N d 722008 N d N3T10N1NOO 4 3 331103105 NI 1 NI MO14 Alddns 15 519115191 N09 N09 9c 92 7031405 AlddNS 7031409 958754 NI ino 611008 1 YOSN3S YOSN3S OVA vZ AlddNS 17008 N d 318vo YINYOJSNYYL 717008 N d 71avo N3ANOJSNVSL 872008 N d 9 31872 925008 N 3OSNIS MOSN3S 057008 N d IYNSSIYd YINYOASNYYL 15 717008 N d 319 2 YINYOASNYYL 027008 N d YIN
21. HVAC Controls Laboratory Model 8635 C SUREFLOW Room Pressure Controller Operation and Service Manual P N 1980274 Revision E April 2006 TSI Model 8635 C SUREFLOW Room Pressure Controller Operation and Service Manual April 2006 P N 1980274 Rev E U S AND CANADA OTHER COUNTRIES Sales amp Customer Service Sales amp Customer Service 800 874 281 1 651 490 2811 001 651 490 2811 651 490 3824 001 651 490 3824 SHIP MAIL TO E MAIL TSI Incorporated answers tsi com ATTN Customer Service 500 Cardigan Road WEB SITE Shoreview MN 55126 www tsi com USA For current information www tsi com Copyright TSI Incorporated April 2006 rights reserved Part number 1980274 Rev E LIMITATION OF WARRANTY AND LIABILITY Seller warrants the goods sold hereunder under normal use and service as described in the operator s manual shall be free from defects in workmanship and material for twenty four 24 months or the length of time specified in the operator s manual from the date of shipment to the customer This warranty period is inclusive of any statutory warranty This limited warranty is subject to the following exclusions a Hot wire or hot film sensors used with research anemometers and certain other components when indicated in specifications are warranted for 90 days from the date of shipment b Parts repaired or replaced as a result of repair services are warranted to be fre
22. IN menu item in diagnostics menu A voltage between 0 and 5 volts DC will be displayed The exact voltage displayed is not important as long as the voltage varies as flow changes Zero volts equals no flow while 5 volts is maximum flow The signal is linear so a correlation between flow and voltage can be established TEST Thermostat input Enter TEMP INPUT menu item in diagnostics menu A voltage between 0 and 10 volts DC will be displayed The exact voltage displayed is not important as long as the voltage changes when thermostat changes Zero volts equals maximum cooling while 10 volts 5 volts if 0 5 VDC thermostat equals maximum heating If unit passed all tests the mechanical components are physically working If problems still exist go to troubleshooting chart for additional information on both hardware and software symptoms Diagnostics Menu The items in the diagnostic menu aid in identifying problems the staff may encounter The items in this menu temporarily change the function by pressing the A W keys No permanent change occurs with these menu items Items are exited by pressing the MENU key When an item is exited the SUREFLOW returns to its normal state Supply Air Control Output Menu item CONTROL SUP The CONTROL SUP item is used to change the control output signal to the supply air actuator damper or motor speed drive When this item is entered a number will be shown on the display indicating the last control outpu
23. M DELAY is enabled when the SWITCH INPUT contact closure pins 11 and 12 is open or the RS 485 communications sends a command ITEM RANGE DEFAULT VALUE OFF pressure based flow OFF stations 0 to 2832 ft MIN 2 0 14 4 m times the supply duct area in square feet ft square meters m Linear based flow stations 0 to TOP VELOCITY times the supply duct area in square feet ft square meters m LATCHED OR UNLATCHED UNLATCHED ON or OFF ON 20 600 SECONDS 20 SECONDS OM Weg ALARM MENU MENUITEM SOFTWARE NAME DOOR DELAY DOOR DELAY MUTE MUTE TIMEOUT TIMEOUT ACCESS CODE ACCESS CODE END OF MENU ITEM DESCRIPTION ITEM RANGE The DOOR DELAY item is an alarm delay used when the door will 20 600 SECONDS be open for an extended period of time The DOOR DELAY is usually set for a longer period of time than the ALARM DELAY This delay affects the visual alarm audible alarm and relay outputs The DOOR DELAY prevents nuisance alarms from people leaving the doors open to move equipment into or out of the laboratory or when a large group will be entering or leaving the laboratory The DOOR DELAY is enabled when the SWITCH INPUT contact closure pins 11 and 12 is closed or the RS 485 communications sends a command NOTE When the switch input is closed the remote set point and remote alarms are activated and the standard setpoint alarms and alarm delay are turned off Set the REMOTE SETPOINT
24. SUP FLO ZERO established on initial set up Linear flow stations with a 1 5 VDC output also need to have a SUP FLO ZERO established Linear flow sup stations with a 0 5 VDC output do not need a SUP FLO ZERO DEFAULT VALUE Unit is factory calibrated No initial adjustment should be necessary Unit is factory calibrated No initial adjustment should be necessary 012 JVIIUYIA I ST CALIBRATION MENU MENUITEM SOFTWARE ITEM DESCRIPTION ITEM RANGE DEFAULT NAME VALUE ELEVATION ELEVATION The ELEVATION item is used to enter the elevation of the building 0 10 000 feet above sea 0 above sea level This item has a range of 0 10 000 feet in 1 000 foot level increments The pressure value needs to be corrected due to changes in air density at different elevations ACCESS ACCESS The ACCESS CODE item selects whether an access code pass ON or OFF ON CODE CODE code is required to enter the menu The ACCESS CODE item prevents unauthorized access to a menu If the ACCESS CODE is ON a code is required before the menu can be entered Conversely if the ACCESS CODE is OFF no code is required to enter the menu END OF The END OF MENU item informs you that the end of a menu has MENU been reached You can either scroll back up the menu to make changes or press the SELECT or MENU key to exit out of the menu 9c OA Wed CONTROL MENU MENUITEM SOFTWARE NAME SPEED SPEED SENSITIVITY SENSITIVITY ITEM DESCRIPTION ITEM RANGE DEFAULT
25. TO CHANGING ANY VALUES Contact TSI for assistance in determining your control problem and for instructions on how to change a value Incorrectly changing a value will result in poor or non existent control Before changing Kc Ti or Td change the speed or adjust the sensitivity to try to eliminate the problem ITEM RANGE Direct or Reverse 0 10 VDC or 0 20 mA Kc 0 1000 Ti 0 1000 Td 0 1000 The range of values is very large Poor control will occur if values are more than twice or less than 1 2 the default value DEFAULT VALUE Direct 0 10 VDC 100 200 Td 25 OM Wed CONTROL MENU MENU ITEM ACCESS CODE SOFTWARE NAME Ke VALUE Ti VALUE Td VALUE Continued ACCESS CODE END OF MENU ITEM DESCRIPTION ITEM RANGE DEFAULT VALUE The VALUE item is used to read and change the gain control coefficient When this item is entered a value for Kc is indicated on the display If the SUREFLOW is not controlling correctly the Kc gain control coefficient may need adjusting Decreasing will slow the control system down which will increase stability Increasing will increase the control system which may cause system instability The Ti VALUE item is used to read and change the integral control coefficient When this item is entered a value for Ti is indicated on the display If the SUREFLOW is not controlling correctly the unit may have an inappropriate integral contro
26. The REM SETPOINT also enables the DOOR DELAY and disables the ALARM DELAY The VENT MIN SET item sets the ventilation supply flow set point CFM This item provides supply air flow adequate to meet the ventilation requirement by preventing the supply flow from going below a preset minimum CFM The controller will not allow the supply air damper to be closed further than the VENT MIN SET set point If room pressure is not maintained at minimum supply flow the general exhaust damper modulates open until pressure set point is reached A TSI flow station is required to make the flow measurement and enable this function The flow station and control damper must be mounted in the supply duct for this item to function properly ITEM RANGE 0 to 0 19500 H50 or to 0 19500 H20 to 0 19500 or 0 to 0 19500 H20 0 pressure based flow stations 400 2832 ft min 2 0 14 4 m s x duct area in square feet f square meters m Linear based flow stations 0 to TOP VELOCITY times the duct area in square feet 02 square meters m DEFAULT VALUE 0 00100 vI OM Wed SETPOINTS MENU MENUITEM SOFTWARE NAME TEMPERATURE TEMP MIN SUPPLY FLOW SET SET POINT TEMPERATURE TEMP LOW COOLING ITEM DESCRIPTION The TEMP MIN SET item sets the temperature supply flow set point CFM This item provides supply air flow adequate to meet the temperature requirements by preventing the supply flow from going
27. VAC 3 watts max Electric 1 5 seconds Pneumatic 5 seconds 43 Network Communications Network communications are available on the Model 8635 The Model 8635 can communicate with a building management system through Modbus or LonWorks protocols Please refer to the appropriate section below for more detailed information Modbus Communications Modbus communications are installed in all Model 8635 laboratory room pressure controllers and monitors This document provides the technical information needed to communicate between the host DDC system and the Model 8635 units This document assumes the programmer is familiar with Modbus protocol Further technical assistance is available from TSI if your question is related to TSI interfacing to a DDC system If you need further information regarding Modbus programming in general please contact Modicon Incorporated One High Street North Andover MA 01845 Phone 800 468 5342 The Modbus protocol utilizes the RTU format for data transfer and Error Checking Check the Modicon Modbus Protocol Reference Guide PI Mbus 300 for more information on CRC generation and message structures The messages are sent at 9600 baud with start bit 8 data bits and 2 stop bits Do not use the parity bit The system is set up as a master slave network The TSI units act as slaves and respond to messages when there correct address is polled Blocks of data can be written or read from each
28. VALUE The SPEED item is used to select the control output speed When 1 to 10 bars 5 bars this item is selected a bar graph is shown on the display There are 10 bars each one representing 10 of speed Starting from the right side sign 10 bars displayed indicates maximum speed This is the fastest the controller will operate 1 bar is the slowest the control output will move The more bars shown the faster the control output The SENSITIVITY item is used to select the integral dead band The 0 to 10 bars 5 bars integral dead band determines when the controller uses integral control slow control and when the controller enters PID control fast control When this item is selected a bar graph will be shown on the display There are 10 bars each representing 10 ft min Starting from the right side sign 10 bars displayed indicates no dead band so the controller will always be in PID control mode The less bars displayed the larger the integral dead band For example with 8 bars displayed and an operating set point of 100 ft min the integral dead band is between 80 and 120 ft min When the measured room pressure velocity is within this range integral or slow control is used However when the room pressure velocity falls below 80 ft min or rises above 120 ft min PID control is enabled until the unit returns within the dead band The SENSITIVITY item has a unique feature that when zero bars are displayed the unit never goes
29. YOJSNYYL SOLD TO TSI INCORPORATED MAIL SHIP TO PROJECT 500 CARDIGAN ROAD SHOREVIEW MN 55126 DWG NO TELEPHONE 651 490 2811 FAX 651 490 3824 COPYRIGHT 2006 BY TSI INCORPORATED 9 10 01 Figure 11 Wiring Diagram Damper System with Pneumatic Actuator 51 Wiring Information 52 MODEL 8635 CONTROLLER leak WIRING DIAGRAM VFD eae 120 VAC IN PRESSURE SENSOR P N 800326 TRANSFORMER P N 800420 SENSOR CABLE 6 CONDUCTOR P N 800248 TRANSFORMER CABLE P N 800414 TO EXHAUST VARIABLE FREQUENCY H H A RED BLK RED BLK WHT ORN BLU SWITCH SY IN SENSOR IN EXHAUST CONTROL 24 VAC OUT SENSOR RS485 SUPPLY CONTROL EXHAUST SUPPLY TEMP TO SUPPLY FLOW FLOW INPUT HIGH VARIABLE IN 1 IN 3 FREQUENCY DRIVE CONTROLLER P N 800224 DIGITAL INTERFACE MODULE DIM TSI INCORPORATED MAIL SHIP TO 500 CARDIGAN ROAD SHOREVIEW MN 55126 TELEPHONE 651 490 2811 FAX 651 490 3824 SOLD TO PROJECT JOB NO DWG NO REP DATE 7 01 96 COPYRIGHT 2006 BY TSI INCORPORATED Figure 12 Wiring Diagram VFD Systems Appendix C Appendix D Access Codes These are the access codes to the different menus of the SUREFLOW When an access code is required pressing the following key sequence will provide access to the required
30. amper Conversely 100 OPEN or 0 OPEN will be full closed A count of 50 OPEN should position the damper approximately 1 2 open On units controlling variable frequency drives fan speed should increase or decrease as numbers change WARNING The CONTROL EXH function overrides the pressure control signal Adequate room pressure will NOT be maintained while in this item Sensor Input Menu item SENSOR INPUT The SENSOR INPUT item is used to verify that the DIM or controller electronics is receiving a signal from the sensor When this item is entered a voltage will be indicated on the display The exact voltage displayed is relatively unimportant It is more important that the voltage is changing which indicates the sensor is working correctly 0 volts represents a negative pressure of 0 2 inches HO 5 volts represents 0 pressure 10 volts represents a positive pressure of 0 2 inches H5O Sensor Communications Menu Item SENSOR STAT The SENSOR STAT item verifies that the RS 485 communications between the pressure sensor and DIM is working correctly Sensor error messages do not display on DIM except when SENSOR STAT item is selected The item will display NORMAL if communications are established correctly If problems exist one of four error messages will display COMM ERROR DIM cannot communicate with sensor Check all wiring and the pressure sensor address Address must be 1 SENS ERROR Problem with sensor bridge Physical
31. and remote alarms equal to the standard SETPOINT and alarms if the same pressure control is required The MUTE TIMEOUT determines the length of time the audible 5 to 30 MINUTES alarm is silenced after the MUTE key is pressed This delay temporarily mutes the audible alarm NOTE If the DIM is in alarm when MUTE TIMEOUT expires the audible alarm turns on When the pressure returns to the safe range the MUTE TIMEOUT is canceled If the room goes back into an alarm condition the MUTE key must be pressed again to mute the audible alarm The ACCESS CODE item selects whether an access code pass ON or OFF code is required to enter the menu The ACCESS CODE item prevents unauthorized access toa menu If the ACCESS CODE is ON a code is required before the menu can be entered Conversely if the ACCESS CODE is OFF no code is required to enter the menu The END OF MENU item informs you that the end of a menu has been reached You can either scroll back up the menu to make changes or press the SELECT or MENU key to exit out of the menu DEFAULT VALUE 20 SECONDS 5 MINUTES OFF 012 JVIIUYIA I 61 ALARM CONSTRAINTS There are a number of constraints built into the software that prevent users from programming conflicting alarm information These are as follows 1 Remote alarms The remote alarms are only active when the switch input pins 11 and 12 is closed which activates the remote or second set point When the
32. both read positive or negative This problem can only occur at very low pressures so slightly changing the balance should eliminate the problem Perform a smoke test to determine pressure direction Select SENSOR SPAN item Position thermal air velocity meter in door opening to obtain velocity reading Press keys until pressure direction and sensor span match thermal air velocity meter and smoke test Press SELECT key to save sensor span Exit menu calibration is complete Flow station pressure transducer zero NOTE Not required for linear flow stations with 0 5 VDC output Pressure based flow station Disconnect tubing between pressure transducer and flow station Enter calibration menu Access code is required Select EXH FLO ZERO to take exhaust flow zero or Select SUP FLO ZERO to take supply flow zero Press SELECT key Flow zero procedure which takes 10 seconds is automatic Press SELECT key to save data Connect tubing between pressure transducer and flow station Linear flow station 1 5 VDC output Remove flow station from duct or cutoff flow in duct Flow station must have no flow going past the sensor Enter calibration menu Access code is required Select EXH FLO ZERO to take exhaust flow zero or Select SUP FLO ZERO to take supply flow zero Technical Section 31 Press SELECT key Flow zero procedure which takes 10 seconds is automatic Press SELECT key to save data Install flow station ba
33. ck in duct Maintenance and Repair Parts The Model 8635 SUREFLOW Room Pressure Controller requires minimal maintenance Periodic inspection of system components as well as an occasional pressure sensor cleaning are all that are needed to insure that the Model 8635 is operating properly System Component Inspection It is recommended that the pressure sensor be periodically inspected for accumulation of contaminants The frequency of these inspections is dependent upon the quality of the air being drawn across the sensor Quite simply if the air is dirty the sensors will require more frequent inspection and cleaning Visually inspect the pressure sensor by sliding open the sensor housing door Figure 7 The air flow orifice should be free of obstructions The small ceramic coated sensors protruding from the orifice wall should be white and free of accumulated debris Figure 7 Pressure sensor door slid open Periodically inspect the other system components for proper performance and physical signs of excessive wear Pressure Sensor Cleaning Accumulations of dust or dirt can be removed with a dry soft bristled brush such as an artist s brush If necessary water alcohol acetone or trichlorethane may be used as a solvent to remove other contaminants Use extreme care when cleaning the velocity sensors The ceramic sensor may break if excessive pressure is applied if sensor is scraped
34. damage to pressure sensor or sensor circuitry Unit is not field repairable Send to TSI for repair CAL ERROR Calibration data lost Sensor must be returned to TSI to be calibrated DATA ERROR Problem with EEPROM field calibration or analog output calibration lost Check all data programmed and confirm unit is function correctly Switch Input Menu Item SWITCH INPUT The SWITCH INPUT item reads the input of the SWITCH IN contact pins 11 and 12 When this item is entered the display will indicate either open or closed If the display indicates open the DIM is in SETPOINT and ALARM DELAY mode If the display indicates closed the DIM is in REM SETPOINT and DOOR DELAY mode SWITCH INPUT changes both pressure set point and alarm delay when closed If the same set point or alarm delay is required set both set points or alarm delay to same value Technical Section 37 Exhaust Flow Input Menu Item EXH FLOW IN The EXH FLOW IN item is used to read the input from the exhaust flow station When this item is entered a voltage will be indicated on the display The exact voltage displayed is relatively unimportant It is more important that the voltage is changing which indicates the flow station is working correctly 0 volts displayed equals zero flow 5 volts displayed equals 2832 ft min x duct area ft pressure based flow station 5 volts displayed equals TOP VELOCITY duct area ft See Configure Menu TOP VELOCITY item
35. dividual components Enter Diagnostics Menu and check the following Control output supply Control output exhaust Sensor input Sensor status Exhaust flow station Supply flow station Temperature input NOTE Skip any test that does not have option installed These diagnostic menu items are explained in detail in the next section Diagnostics Menu of the manual so their function is not reviewed here If the SUREFLOW system passes each of the tests the mechanical piece parts are all functioning correctly TEST Control output supply Enter CONTROL SUP menu item in diagnostics menu A number between 0 OPEN and 100 OPEN will be displayed Press the A V keys until either 0 OPEN or 100 OPEN shows on the display Note the position of the supply air control damper If display reads 0 OPEN press the A key until 100 OPEN is shown on display If display reads 100 OPEN press key until 0 OPEN is shown on display Note the position of the supply air damper The damper should have rotated either 45 or 90 degrees depending on actuator installed If not see hardware section Control system is not controlling TEST Control output exhaust Enter CONTROL EXH menu item in diagnostics menu A number between 096 OPEN and 100 OPEN will be displayed Press the A V keys until either 0 OPEN or 100 OPEN shows on the display Note the position of the general exhaust control damper If display reads 0 OPEN press the A key unti
36. e Cause Corrective Action Control system is No control output not controlling signal continued Bad actuator or E P damper doesn t move Defective variable frequency drive VFD Damper rotating opposite direction 40 Go into DIAGNOSTICS menu CONTROL SUP or CONTROL EXH item A number between 0 OPEN and 100 OPEN will be displayed Pressing the A key increases the number Pressing the V key decreases the number Measure the DC voltage between pins 17 and 18 on the controller Change the CONTROL value by about 40 OPEN The voltage output should change approximately 4 volts Change the CONTROL value to 50 OPEN The voltage should read approximately 5 VDC If no change occurs disconnect control wires on pins 17 ad 18 and repeat test If DIM still fails to change voltage output DIM is probably defective Go into DIAGNOSTICS menu CONTROL SUP or CONTROL EXH item A number between 0 OPEN and 100 OPEN will be displayed Pressing the A key increases the number Pressing the W key decreases the number Change the CONTROL value to read 096 OPEN or 100 OPEN Note damper position Press an arrow key to change 096 OPEN to 100096 OPEN or 10096 OPEN to 0 OPEN Note position of damper Damper should have rotated 45 or 90 degrees depending on actuator system installed If damper rotated 45 or 90 degrees actuator is installed and operating correctly If damper did not rotate check that Jumper is installed correctly on actuato
37. e from defects in workmanship and material under normal use for 90 days from the date of shipment c Seller does not provide any warranty on finished goods manufactured by others or on any fuses batteries or other consumable materials Only the original manufacturer s warranty applies d Unless specifically authorized in a separate writing by Seller Seller makes no warranty with respect to and shall have no liability in connection with goods which are incorporated into other products or equipment or which are modified by any person other than Seller The foregoing is IN LIEU OF all other warranties and is subject to the LIMITATIONS stated herein NO OTHER EXPRESS OR IMPLIED WARRANTY OF FITNESS FOR PARTICULAR PURPOSE OR MERCHANTABILITY IS MADE TO THE EXTENT PERMITTED BY LAW THE EXCLUSIVE REMEDY OF THE USER OR BUYER AND THE LIMIT OF SELLER S LIABILITY FOR ANY AND ALL LOSSES INJURIES OR DAMAGES CONCERNING THE GOODS INCLUDING CLAIMS BASED ON CONTRACT NEGLIGENCE TORT STRICT LIABILITY OR OTHERWISE SHALL BE THE RETURN OF GOODS TO SELLER AND THE REFUND OF THE PURCHASE PRICE OR AT THE OPTION OF SELLER THE REPAIR OR REPLACEMENT OF THE GOODS IN NO EVENT SHALL SELLER BE LIABLE FOR ANY SPECIAL CONSEQUENTIAL OR INCIDENTAL DAMAGES SELLER SHALL NOT BE RESPONSIBLE FOR INSTALLATION DISMANTLING OR REINSTALLATION COSTS OR CHARGES No Action regardless of form may be brought against Seller more than 12 months after a cause of action has accr
38. e is the speed or how fast is the air moving between the two spaces The SUREFLOW provides both pieces of information by measuring whether the air is flowing into or out of a laboratory and the speed of the air Negative room pressure is present when air flows from a hallway into the laboratory If air flows from the laboratory into the hallway the room is under positive pressure Figure 1 gives a graphic example of positive and negative room pressure gt gt E 3 Room Room Negative Positive Figure 1 Room Pressure An example of negative pressure is a bathroom with an exhaust fan When the fan is turned on air is exhausted out of the bathroom creating a slight negative pressure when compared to the hallway This pressure differential forces air to flow from the hallway into the bathroom User Basics The SUREFLOw device informs the laboratory users when the laboratory is under proper pressure and provides alarms when the room pressure is inadequate If the room pressure is in the safe range a green light is on If the pressure is inadequate a red alarm light and audible alarm turn on The SUREFLOW consists of two pieces a pressure sensor and a Digital Interface Module DIM The pressure sensor is mounted above the doorway entrance to the laboratory Usually the DIM is mounted close to the entrance to the laboratory The pressure sensor continuously measures the room pressure and provides room pres
39. es The internal fuse will automatically reset Plug unit back in and check display If display is still blank check all wiring etc If no problems are found replace DIM If approximately 5 volts is measured the fuse in the electric actuator or E P is blown Disconnect power to the electric actuator or E P for two minutes to reset fuse Disconnecting power requires either shutting off circuit breaker or disconnecting the wires on pins 1 and 2 on the electric actuator or E P If zero volts are measured see No power to DIM Verify circuit breaker is on Verify transformer primary measures 110 VAC Verify transformer secondary measures 24 30 VAC Verify electric actuator or E P interface is receiving 24 30 volts between pins 1 and 2 Verify 24 40 VDC is found between pins 3 and 4 of the electric actuator Verify 24 30 VAC between pins 3 and 4 of the E P interface Verify voltage on pins and 2 of DIM is 24 30 VAC for pneumatic systems and VFDs or 24 40 VDC on electric actuators If proper voltage is found between pins 1 and 2 of the DIM all wiring has been checked fuses have been reset and screen is still blank the DIM is probably defective Replace DIM Verify correct wiring see wiring diagrams Appendix B DIM must be wired exactly as shown Verify supply control wiring pins 17 and 18 goes to supply damper and exhaust control wiring pins 9 and 10 goes to general exhaust damper 39 Symptom Possibl
40. into PID control The control output is a slow control signal WARNING When SENSITIVITY is set for 10 bars the system is always in PID control which will probably cause an unstable system It is recommended that the SENSITIVITY be set at 9 bars or less 012 JVIIUY IAT LC CONTROL MENU MENUITEM SOFTWARE NAME CONTROL CONTROL SIGNAL SIG VARIABLE OUTPUT FREQUENCY MODE DRIVE CONTROL OUTPUT Kc VALUE Kc VALUE Ti VALUE Ti VALUE Td VALUE Td VALUE ITEM DESCRIPTION The CONTROL SIG item determines the control signal s output direction As an example if the control system closes the exhaust damper instead of opening the damper this option will reverse the control signal to now open the damper NOTE Changing the CONTROL SIG changes both the supply and exhaust damper directions If only one damper needs to change direction change the jumper on the actuator instead of changing the CONTROL SIG The OUTPUT MODE item switches the supply and exhaust control outputs from 0 10 VDC to 0 20 mA When TSI damper actuators are installed 0 10 VDC must be selected The output mode is set to 0 20 mA when VFD applications require a 4 20 mA control signal WARNING The Kc VALUE Ti VALUE and Td VALUE items Suggestion provides you with the ability to manually change the PID control loop variables DO NOT CHANGE THESE VALUES UNLESS YOU HAVE A THROUGH UNDERSTANDING OF PID CONTROL LOOPS CONTACT TSI FOR ASSISTANCE PRIOR
41. ion is defined as when of the room pressure falls below 0 to 0 19500 H O ALARM or goes in the opposite direction of the LOW ALARM set point This item is enabled when the SWITCH INPUT contact closure pins 11 and 12 is open or the RS 485 communications sends a command HIGH HIGH The HIGH ALARM item sets the high pressure alarm set point A OFF 0 to 0 19500 H O OFF PRESSURE ALARM high alarm condition is defined as when of the room pressure rises 0 to 0 19500 ALARM above the HIGH ALARM set point This item is enabled when the SWITCH INPUT contact closure pins 11 and 12 is open or the RS 485 communications sends a command REMOTE OR REM LOW The REM LOW ALM item sets a remote or second low pressure OFF 0 to 0 19500 H O OFF SECOND LOW ALM alarm set point A remote low alarm condition is defined as when the 0 to 0 19500 ALARM room pressure falls below or goes in the opposite direction of the REM LOW ALM set point This item is enabled when the SWITCH INPUT contact closure pins 11 and 12 is closed or the RS 485 communications sends a command REMOTE OR REM HIGH The REM HIGH ALM item sets a remote or second high pressure OFF 0 to 0 19500 OFF SECOND HIGH ALM ALARM alarm set point high alarm condition is defined as when the room pressure rises above the REM HIGH ALM set point This item is enabled when the SWITCH INPUT contact closure pins 11 and 12 is closed or the RS 485 communications sends a command to
42. istic 6 feet preferred 2 2 feet minimum Supply diffuser terminal throw velocity must be less than 10 ft min at the sensor Relocate supply or exhaust as needed Part Two Specifications Room Pressure Module Display Range yucca Resolution Display Update Inputs Switch in Flow in ee Outputs Low Alarm Range High Alarm Range Alarm Contacts Operating Temperature Input Power Dimensions Weight Pressure Sensor Temperature Compensation Power Dissipation Dimensions Weight cece Damper Actuator Types of Actuators Input Time for 90 Rotation Specifications 0 20000 to 0 20000 inches HO 5926 of reading 0 5 sec SPST N O Switch Closing switch initiates condition 0 5 VDC 0 19500 to 0 19500 inches H O 0 19500 to 0 19500 inches SPST N O Max current 5A max voltage 150 VDC 250 VAC Maximum switch load 10 mA 5 VDC Contacts close in alarm condition Yes 32 to 120 F 24 VAC 5 watts max 4 9 in x 4 9 in x 1 35 in 0 7 Ib 55 to 95 F 0 16 watts at 0 inches H O 0 20 watts at 0 00088 inches HO 5 58 in x 3 34 in x 1 94 in 0 2 Ib Electric or pneumatic Electric 24 VAC 7 5 watts max Pneumatic 24
43. l 10096 OPEN is shown on display If display read 100 OPEN press W key until 0 is shown on display Note the position of the general exhaust damper The damper should have rotated either 45 or 90 degrees depending on actuator installed If not see hardware section Control system is not controlling TEST Sensor input Enter SENSOR INPUT menu item in diagnostics menu A voltage between 0 and 10 volts DC will be displayed It is not important what the exact voltage is to pass this test Tape over the pressure sensor slide pressure sensor door open and voltage should read approximately 5 volts zero pressure Remove tape and blow on sensor Displayed value should change If voltage changes the unit passes If voltage doesn t change proceed to TEST Sensor status Technical Section 35 TEST Sensor status Enter SENSOR STAT menu item in diagnostics menu If NORMAL is displayed the unit passes test If an error message is displayed go to diagnostics menu section of the manual SENSOR STAT menu item for explanation of error message TEST Exhaust flow station Enter EXH FLOW IN menu item in diagnostics menu A voltage between 0 and 5 volts DC will be displayed The exact voltage displayed is not important as long as the voltage varies as flow changes Zero volts equals no flow while 5 volts is maximum flow The signal is linear so a correlation between flow and voltage can be established TEST Supply flow station Enter SUP FLOW
44. l coefficient Increasing Ti will slow the control system which will increase stability Decreasing Ti will increase the control system which may cause system instability The Td VALUE item is used to read and change the derivative control coefficient When this item is entered a value for Td is indicated on the display If the SUREFLOW is not controlling correctly the unit may have an inappropriate derivative control coefficient WARNING Setting Kc or Ti to zero turns the control output signal off causing the unit to act like a monitor The ACCESS CODE item selects whether an access code pass ON or OFF OFF code is required to enter the menu The ACCESS CODE item prevents unauthorized access to a menu If the ACCESS CODE is ON a code is required before the menu can be entered Conversely ifthe ACCESS CODE is OFF no code is required to enter the menu The END OF MENU item informs you that the end of a menu has been reached You can either scroll back up the menu to make changes or press the SELECT or MENU key to exit out of the menu 012 JVIIUYIA I 6 INTERFACE MENU MENUITEM SOFTWARE NAME NETWORK NET PROTOCOL PROTOCOL NETWORK NET ADDRESS ADDRESS ACCESS CODE ACCESS CODE END OF MENU ITEM DESCRIPTION ITEM RANGE The NET PROTOCOL item selects the communications protocol MODBUS used to interface with the building management system or CIMETRICS The NET ADDRESS item is used to select the main network add
45. linear based flow station Supply Flow Input Menu Item SUP FLOW IN The SUP FLOW IN item is used to read the input from the supply flow station When this item is entered a voltage will be indicated on the display The exact voltage displayed is relatively unimportant It is more important that the voltage is changing which indicates the flow station is working correctly 0 volts displayed equals zero flow 5 volts displayed equals 2832 ft min x duct area ft pressure based flow station 5 volts displayed equals TOP VELOCITY x duct area ft See Configure Menu TOP VELOCITY item linear based flow station Temperature Input Menu Item TEMP INPUT The TEMP INPUT item is used to read the input from the thermostat When this item is entered a voltage will be indicated on the display The exact voltage displayed is relatively unimportant It is more important that the voltage is changing which indicates the thermostat is working correctly The output range that can be read is 0 10 VDC Zero volts correlates to maximum cooling while 10 volts 5 volts on 0 5 V thermostats correlates to maximum heating Low Alarm Relay Menu Item LOW ALM REL The LOW ALM REL item is used to change the state of the low alarm relay When this item is entered the display will indicate either OPEN CLOSED The keys are used to toggle the state of the relay The A key is used to OPEN the alarm contact The key is used to CLOSE the alar
46. losely checked to verify it exactly matches the wiring diagram The TSI cables are all color coded to ensure proper wiring A wiring diagram is located in Appendix B of this manual Wiring associated with non TSI components should be closely checked for correct installation If non TSI components are installed consider disconnecting them for testing purposes Confirming physical installation is correct All of the hardware components need to be installed properly Review the installation instructions and verify components are installed properly at the correct location This is easily done when the wiring is checked Verifying mechanical components Verifying all TSI components are operating correctly requires following a simple procedure The fastest procedure to confirm all equipment is operating is to first test the DIM and then go into the diagnostic menu to test each component 34 Part Two NOTE These tests require power to the units so if unit has no power refer to hardware troubleshooting chart to eliminate power problem TEST DIM Press TEST key to verify Digital Interface Module DIM electronics are functioning correctly At the end of the self test the display will show SELF TEST PASSED if all DIM electronics are good If unit displays DATA ERROR at the end of the test the electronics may be corrupted Check all software items to determine cause of DATA ERROR If SELF TEST PASSED is displayed proceed to test in
47. m contact When the contact is closed the LOW ALM REL should be in an alarm condition High Alarm Relay Menu Item HIGH ALM REL The HIGH ALM REL item is used to change the state of the high alarm relay When this item is entered the display will indicate either OPEN or CLOSED The A V keys used to toggle the state of the relay The A key is used to OPEN the alarm contact The V key is used to CLOSE the alarm contact When the contact is closed the HIGH ALM REL should be in an alarm condition Access Code Menu Item ACCESS CODE The ACCESS CODE item selects whether an access code pass code is required to enter the menu The ACCESS CODE item prevents unauthorized access to a menu If the ACCESS CODE is ON a code is required before the menu can be entered Conversely if the ACCESS CODE is OFF no code is required to enter the menu 38 Part Two Troubleshooting Chart Symptom Possible Cause Corrective Action Display is blank Fuse is blown No power to DIM DIM is defective Control system is Incorrect wiring not controlling Supply and exhaust control wiring reversed Technical Section Measure voltage at pins 1 and 2 on DIM The voltage should nominally be 24 40 VDC when using TSI electric actuators 24 30 VAC when using TSI pneumatic actuators 24 30 VAC when using motor speed drives If correct voltage is measured internal DIM fuse is probably blown Unplug 14 pin connector from DIM for 2 minut
48. mming function being performed Keypad The keypad has six keys The gray keys with black letters are user information keys In normal operation these keys are active Additionally the red emergency key is active The gray keys with blue characters are used to program the unit A thorough description of each key is given below User Keys Gray with Black Letters The four keys with black letters provide you information without changing the operation or the function of the unit User Basics 3 TEST Key The TEST key initiates an instrument self test Pressing the TEST key activates a scrolling sequence on the display that shows the product model number software version and all set point and alarm values The unit then performs a self test that tests the display indicator lights audible alarm and internal electronics to ensure they are operating properly If a problem with the unit exists DATA ERROR will be displayed You should have qualified personal determine the problem with the unit RESET Key The RESET key performs three functions 1 Resets the alarm light alarm contacts and audible alarm when in a latched or non automatic reset mode The room pressure must be in the safe or normal range before the RESET key will operate 2 Resets the emergency function after the emergency key has been pressed see EMERGENCY key 3 Clears any displayed error messages MUTE Key The MUTE key temporarily silences the audible alarm The time
49. n alarm until the RESET key is pressed See ALARM RESET User Basics 5 Before Calling TSI This manual should answer most questions and resolve most problems you may encounter If you need assistance or further explanation contact your local TSI representative or TSI TSI is committed to providing high quality products backed by outstanding service Please have the following information available prior to contacting your authorized TSI Manufacturer s Representative or TSI Model number of unit 8635 Software revision level Facility where unit is installed First two items that scroll when TEST key is pressed Due to the different SUREFLOW models available the above information is needed to accurately answer your questions For the name of your local TSI representative or to talk to TSI service personnel please call TSI at U S AND CANADA OTHER COUNTRIES Sales amp Customer Service Sales amp Customer Service 800 874 2811 651 490 2811 001 651 490 2811 651 490 3824 001 651 490 3824 SHIP MAIL TO E MAIL TSI Incorporated answers tsi com ATTN Customer Service 500 Cardigan Road WEB SITE Shoreview MN 55126 www tsi com USA 6 Part One PART TWO Technical Section The SUREFLOwW is ready to use after being properly installed The pressure sensor is factory calibrated prior to shipping and should not need adjustment The Digital Interface Module DIM is programmed with a default configuration that
50. n properly installed iii User Basics Reading product manuals should not be a difficult and time consuming process This section provides a brief but thorough overview of the SUREFLOW product by maximizing information with minimal reading These few pages explain the purpose The Instrument and the operation Useful User Information Digital Interface Module Alarms of the unit Technical product information is available in Part Two of the manual The manual focuses on laboratory spaces but the product information is accurate for any room pressure application The Instrument SUREFLOW measures and reports room pressure Proper room pressure can control airborne contaminants that can adversely affect experiments workers in the laboratory and people in the laboratory vicinity For example laboratories with fume hoods need negative room pressure air flowing into the room to minimize exposure to people outside the laboratory The fume hood is the first level of containment and the laboratory itself is the second level of containment Room pressure or pressure differential is created when one space hallway is at a different pressure than an adjoining space laboratory When a pressure differential is created between two spaces air is forced to flow from the higher pressure space to the lower pressure space The direction of air flow is one component of proper room pressure The second component of room pressur
51. ne 2 shows first menu item Press the W key until HIGH ALARM is shown on display Menu selected Item name Press the SELECT key to access the positive low alarm set point The item name HIGH ALARM will now be displayed on line 1 and the item s current value will be displayed on line 2 Item Name Current Value Press the A key to change the high alarm set point to 0 003 inches H5O PRESSURE 00085 MENU SETPOINTS ALARM TEST SELECT ALARM LOW ALARM ALARM HIGH ALARM oe TEST SELECT HIGH ALARM 00200 H20 HIGH ALARM 00300 abe Part Two Press the SELECT key to save the new TEST negative low alarm set point SELECT Three short beeps will sound indicating HIGH ALARM that the data is being saved Saving Data Immediately after the data is saved the ALARM SUREFLOW will return to the menu level HIGH ALARM displaying the menu title on the top line of the display and the menu item on the bottom line goes to step 3 WARNING If the MENU key was pressed instead of the SELECT key the new data would not have been saved and the SUREFLOW would have escaped back to the menu level shown in step 3 O Press the MENU key once to return to the menu level MENU ALARM CONFIGURE O Press the MENU key a second time to return to the normal operating level MENU Unit is now back in normal PRESSURE operation 00085 Technical Section 11 Menu and Men
52. ort pressure correctly Flow Rate general exhaust duct flow station number per hour supply duct flow station Ls Setpoint 7 Active control setpoint Displayed in feet per minute Status Index Status of SUREFLOW device 0 Normal 1 Low Alarm 2 High Alarm 3 Min Exh Alm 4 Min Sup Alm 7 Data Error 8 Emergency Control Mode Control mode device is in 0 1 Output fee eee Output EXAMPLE of 04 Read Input Registers function format This example read variable addresses 0 and 1 Velocity and Pressure from 8635 C 1 11 13 QUERY RESPONSE Field Name Hex Field Name Hex Slave Address 01 Slave Address 01 Function 04 Function 04 Starting Address Hi 00 Byte Count 04 Starting Address Lo 00 Data Hi 00 No Of Points Hi 00 Data Lo AddrO 64 100 ft min No Of Points Lo 02 Data Hi Addr1 00 Error Check CRC Data Lo Addrl 59 00089 H20 Error Check CRC Network Communications 45 XRAM Variables These variables can be read using Modbus command 03 Read Holding Registers They can be written to using Modbus command 16 Preset Multiple Regs Many of these variables are the same menu items that are configured from the SUREFLOW keypad The calibration and control items are not accessible from the DDC system This is for safety reasons since each room is individually setup for maximum performance TSI offers a number of different models so if a feature is not available on a unit the variable is
53. pendix C Appendix C may have been removed from the manual for security reasons Press the SELECT key to access chosen item The top line of display shows menu item selected while the second line shows current item value Use the A V keys to change item value Save the new value by pressing the SELECT key pressing the MENU key will exit out of menu function without saving data Press the MENU key to exit current menu and return to main menu Press the MENU key again to return to normal instrument operation If more than one item is to be changed skip steps 8 and 9 until all changes are complete If more items in the same menu are to be changed scroll to them after saving the data step 7 If other menus need to be accessed press the MENU key once to access list of menus The instrument is now at step 2 of the keystroke sequence Technical Section Programming Example The following example demonstrates the keystroke sequence explained above In this example the high alarm set point will be changed from 0 002 inches H O to 0 003 inches H O 10 Unit is in normal operation scrolling room pressure flows etc Pressure is shown in this case Press the MENU key to gain access to the menus The first 2 menu choices are displayed Press the W key once Blinking cursor should be on A of Alarm Press the SELECT key to access the ALARM menu NOTE Blinking cursor must be on A in Alarm Line 1 shows menu selected Li
54. ps below 0 001 inches H5O gets closer to zero the audible and visual alarms activate The alarms turn off when set to unlatched when the unit returns to the safe range which is defined as negative pressure greater than 0 001 inches H5O Visual Alarm Operation The red light on the front of the unit indicates an alarm condition The red light is on for all alarm conditions low alarms high alarms and emergency The light is on continuously in a low or high alarm condition and flashes in an emergency condition Audible Alarm Operation EMERGENCY key When the EMERGENCY key is pressed the audible alarm beeps intermittently until the EMERGENCY or RESET key is pressed terminating the emergency alarm The emergency alarm cannot be silenced by pressing the MUTE key Audible Alarms All Except Emergency The audible alarm is continuously on in all low and high alarm conditions The audible alarm can be temporarily silenced by pressing the MUTE key The alarm will be silent for a period of time see MUTE TIMEOUT to program time period When the time out period ends the audible alarm turns back on if the alarm condition is still present You can program the audible alarm to be permanently turned off see AUDIBLE ALM The red alarm light will still turn on in alarm conditions when audible alarm is turned off The audible and visual alarms can be programmed to either automatically turn off when the unit returns to the safe range or to stay i
55. r or E P Appendix B Damper is not physically stuck screws etc Wiring is correct between actuators and controller Check that voltage varies between 0 and 10 volts on pins 5 and 6 on electric actuator or E P see No control output signal Electric actuator is not over torqued The electric actuator has current limiting protection If damper is physically stuck or actuator is over current the actuator will shut down To restart either kill power to actuator or move damper in opposite direction it was trying to rotate CONTROL SUP or CONTROL EXH menu item Perform test described in Control system is not controlling lf CONTROL OUT is functioning verify wiring to VFD by confirming CONTROL OUT voltage changes at VFD If voltage changes a problem with VFD exists See VFD manual for further troubleshooting If damper is full open when it should be closed or full closed when it should be open go into CONTROL menu CONTROL SIG menu item Change direct to reverse or reverse to direct to change control output direction The control sig changes the direction of both the supply and exhaust damper If only 1 damper rotates incorrectly change the jumper on the E P or electric actuator Part Two Symptom Possible Cause Corrective Action Control system is not controlling continued Sensor does not calibrate Pressure sensor red LED is blinking Figure 8 DIM always displays 0 200 inches H20 Damper is full open or f
56. remote or second set point are active the standard alarms are turned off The SUREFLOW is programmed not to allow the pressure alarms to be programmed within 20 ft min 0 00028 H O at 0 001 H O of the control set point Example The control SETPOINT is set at 0 001 H2O The LOW ALARM set point cannot be set higher than 0 00072 H O Conversely if your control SETPOINT is set at 0 001 H O the HIGH ALARM set point cannot be set lower than 0 00128 The minimum flow alarms must be programmed to be at least 50 CFM less than the minimum flow set point The alarms both standard and remote can be programmed for positive or negative pressure However both the low and high alarm must be set either positive or negative The DIM does not allow one positive alarm and one negative alarm Alarms do not terminate until the pressure or flow exceeds the alarm set point The alarm set point must be slightly exceeded before alarm will terminate The ALARM RESET item selects how the alarms will terminate when controller returns to the safe range The pressure and flow alarms all terminate the same they are either latched or unlatched If unlatched is selected the alarms automatically turn off when the value slightly exceeds the control set point If latched is selected the alarms will not terminate until the controller returns to set point and the RESET key is pressed There is a programmable ALARM DELAY and optional DOOR DELAY
57. ress 1 247 of the individual room pressure device Each unit on the network must have its own unique address The values range from 1 247 If RS 485 communications are being used then a unique NET ADDRESS must be entered into the unit There is no priority between the RS 485 and keypad The most recent signal by either RS 485 or keypad will initiate a change RS 485 communications allows you access to all menu items except calibration items The RS 485 network can initiate a change at any time The ACCESS CODE item selects whether an access code pass ON or OFF code is required to enter the menu The ACCESS CODE item prevents unauthorized access to a menu If the ACCESS CODE is ON a code is required before the menu can be entered Conversely if the ACCESS CODE is OFF no code is required to enter the menu The END OF MENU item informs you that the end of a menu has been reached You can either scroll back up the menu to make changes or press the SELECT or MENU key to exit out of the menu DEFAULT VALUE MODBUS OFF Calibration The calibration section explains how to calibrate the SUREFLOW pressure sensor including setting the proper elevation and how to zero a flow station NOTE The SUREFLOW pressure sensor is factory calibrated and normally does not need to be adjusted However inaccurate readings may be detected if pressure sensor is not installed correctly or problems with the sensor exist First check that
58. sure information to the DIM The DIM continuously reports the room pressure and activates the alarms when necessary SUREFLOW is a continuous measuring system providing instant information on the room pressure Useful User Information The DIM has a green light and red light to indicate room pressure status The green light is on when the room has proper room pressure The red light comes on when an alarm condition exists Sliding the door panel to the right reveals a digital display and keypad Figure 2 The display shows detailed information about room pressure alarms etc The keypad allows you to test the device put the device into emergency mode and program or change the device parameters 3 ooo 3 lt Figure 2 Digital Interface Module DIM SUREFLOW has two levels of user information 1 SUREFLOW has a red light and green light to provide continuous information on room pressure status 2 SUREFLOW has a hidden operator panel providing detailed room status information self testing capabilities and access to the software programming functions NOTE The unit provides continuous room pressure status through the red and green light The operator panel is normally closed unless further information on room pressure status is needed or software programming is required 2 Part One Operator Panel The DIM in Figure 3 shows
59. t value The range of values displayed is 0 OPEN 100 OPEN Pressing the A V keys change the count on the display Pressing the A key should increase the displayed value while pressing the V key will decrease the displayed value The supply control device should change modulate as the number changes Depending on the jumper location on the actuator 0 OPEN or 100 OPEN is full open on damper Conversely 100 OPEN or 0 OPEN will be full closed A count of 50 OPEN should position the damper approximately 1 2 open On units controlling variable frequency drives fan speed should increase or decrease as numbers change WARNING The CONTROL SUP function overrides the pressure control signal Adequate room pressure will NOT be maintained while in this item Exhaust Air Control Output Menu item CONTROL EXH The CONTROL item is used to change the control output signal to the exhaust supply air actuator damper or motor speed drive When this item is entered a number will be shown on the display indicating the last control output value The range of values displayed is 0 100 OPEN Pressing the A V keys change the count on the 36 Part Two display Pressing the A key should increase the displayed value while pressing the V key will decrease the displayed value The exhaust control device should change modulate as the number changes Depending on the jumper location on the actuator 0 OPEN or 100 OPEN is full open on d
60. te air changes per hour Entering a value for the volume will add the air changes per hour value to the display s scrolling sequence If a zero value is entered the air changes per hour will not scroll on the display If the DIM displays English units area must be entered in cubic feet If metric units are displayed area must be entered in cubic meters The air changes per hour is calculated using the ROOM VOLUME and the input from the supply air flow station If no flow station is installed a zero value should be entered ITEM RANGE PRESSURE or LINEAR 0 5 000 FT MIN 0 25 4 m s 0 20 000 cubic feet 0 550 cubic meters The DIM does not compute volume The volume must be first calculated and then entered into the unit DEFAULT VALUE PRESSURE 012 qponu 22 ET CONFIGURE MENU MENU ITEM SOFTWARE NAME ACCESS CODE ACCESS CODE END OF MENU ITEM DESCRIPTION ITEM RANGE DEFAULT VALUE The ACCESS CODE item selects whether an access code pass code ON or OFF OFF is required to enter the menu The ACCESS CODE item prevents unauthorized access to a menu If the ACCESS CODE is ON a code is required before the menu can be entered Conversely if the ACCESS CODE is OFF no code is required to enter the menu The END OF MENU item informs you that the end of a menu has been reached You can either scroll back up the menu to make changes or press the SELECT or MENU key to exit out of the menu VC OM
61. tem will now appear on the first line of the display and the second line will show the item value 3 Pressing the SELECT key when finished changing an item will save the data and exit back to the menu items An audible tone 3 beeps and visual display saving data gives confirmation data is being saved A V Keys The A F keys are used to scroll through the menus menu items and through the range of item values that can be selected Depending on the menu item selected the value may be numerical specific property on off or a bar graph NOTE When programming a menu item continuously pressing the arrow key will scroll through the values faster than if arrow key is pressed and released Keystroke Procedure The keystroke operation is consistent for all menus The sequence of keystrokes to follow is the same regardless of the menu item being changed 1 2 8 9 Press the MENU key to access the main menu Use the A V keys to scroll through the menu choices The blinking cursor needs to be on the first letter of the menu you want to access Press the SELECT key to access chosen menu The menu selected is now displayed on line one and the first menu item is displayed on line 2 Use the A V keys to scroll through the menu items Scroll through the menu items until desired item is displayed NOTE If Enter Code is flashing the access code must be entered before you can enter the menu Access codes are found in Ap
62. that determines how long to delay before activating the alarms This delay affects all pressure and flow alarms The MUTE TIMEOUT item temporarily turns the audible alarm off for all pressure and flow alarms The display can only show one alarm message Therefore the controller has an alarm priority system with the highest priority alarm being displayed If multiple alarms exist the lower priority alarms will not display until after the highest priority alarm has been eliminated The alarm priority is as follows Pressure sensor low alarm Pressure sensor high alarm Flow station minimum supply flow Data error 0 OM Weg 10 The low and high alarms are absolute values The chart below shows how the values must be programmed in order to operate correctly 0 2 inches HO 0 0 2 inches HO maximum negative maximum positive High Negative Low Zero Low Positive High Negative Set point Negative Positive Set point Positive Alarm Alarm Alarm Alarm The value of each set point or alarm is unimportant except for small dead band in graph above It is important to understand that the negative positive low alarm must be between zero 0 pressure and the negative positive set point and that the high alarm is a greater negative positive value than set point 012 JVIIUY IAT Ic CONFIGURE MENU MENU ITEM SOFTWARE NAME DISPLAY DISPLAY AVG AVERAGE UNITS UNITS EXHAUST EXH DCT AREA DUCT AREA SUPPLY DUCT SUP D
63. the alarm is temporarily silenced is programmable by you see MUTE TIMEOUT When the mute period ends the audible alarm turns back on if the alarm condition is still present NOTE You can program the audible alarm to be permanently turned off see AUDIBLE ALM AUX Key The AUX key is active only in specialty applications and is not used on the standard SUREFLOW If the AUX key is used a separate manual supplement will explain the AUX key function Programming Keys Gray with Blue Characters The four keys with blue print are used to program or configure the unit to fit a particular application WARNING Pressing these keys will change how the unit functions so please thoroughly review the manual before changing menu items MENU Key The MENU key performs three functions 1 Provides access to the menus when in the normal operating mode 2 When the unit is being programmed the MENU key acts as an escape key to remove you from an item or menu without saving data 3 Returns the unit to the normal operating mode The MENU key is further described in the Software Programming section of this manual SELECT Key The SELECT key performs three functions 1 Provides access to specific menus 2 Provides access to menu items 3 Saves data Pressing the key when finished with a menu item will save the data and exit you out of the menu item A V Keys The keys are used to scroll through the menus menu items and through the range
64. the sensor is installed correctly usually only a problem on initial set up Second go into DIAGNOSTICS menu SENSOR STAT item If NORMAL is displayed calibration can be adjusted If an error code is displayed eliminate error code and then verify pressure sensor needs adjustment pressure transducer based flow stations and 1 5 VDC linear flow stations must be zeroed upon initial system set up Linear 0 5 VDC flow stations do not require a zero flow to be established Adjusting the SUREFLOW calibration may be required to eliminate errors due to convection currents HVAC configuration or equipment used to make the measurement TSI recommends always taking the comparison measurement in the exact same location i e under the door middle of door edge of door etc A thermal air velocity meter is needed to make the comparison measurement Normally the velocity is checked at the crack under the doorway or the door is opened 1 to allow alignment of the air velocity probe making the measurement If the crack under the door is not large enough use the 1 open door technique Calibrating pressure sensor primary sensor or second sensor Enter calibration menu see Software Programming if not familiar with key stroke procedure Access code is turned on so enter proper access code All menu items described below are found in CALIBRATION menu Elevation The ELEVATION item eliminates pressure sensor error due to elevation of building See
65. to be changed SEN MUTE A TEST RESET SELECT v Figure 4 Programming Keys MENU Key The MENU key has three functions 1 MENU is used to gain access to the menus when the unit is in the normal operating mode Pressing the key once will exit the normal operating mode and enter the programming mode When the MENU key is first pressed the first two menus are listed 2 When the unit is being programmed the MENU key acts like an escape key When scrolling through the main menu pressing the MENU key will return the unit to standard operating mode When scrolling through the items on a menu pressing the MENU key will return you to the list of menus When changing data in a menu item pressing the MENU key will escape out of the item without saving changes 3 When programming is complete pressing the MENU key will return the unit to normal operating mode SELECT Key The SELECT key has three functions 1 The SELECT key is used to gain access to specific menus To access a menu scroll through the menus using arrow keys and place the flashing cursor on the desired menu Press the SELECT key to select the menu The first line on the display will now be the selected menu and the second line will show the first menu item 8 Part Two 2 The SELECT key is used to gain access to specific menu items To access menu item scroll through the menu items until item appears Press the SELECT key and the menu i
66. to remove contaminants or if the cleaning apparatus abruptly impacts the sensor WARNING If you are using a liquid to clean the sensor turn off power to the Model 8635 Do not use compressed air to clean the velocity sensors Do not attempt to scrape contaminants from the velocity sensors The velocity sensors are quite durable however scraping may cause mechanical damage and 32 Part Two possibly break the sensor Mechanical damage due to scraping voids the pressure sensor warranty Replacement Parts All components of the room pressure controller are field replaceable Contact TSI HVAC Control Products at 800 874 2811 U S and Canada or 001 651 490 2811 other countries or your nearest TSI Manufacturer s Representative for replacement part pricing and delivery Part Number 800224 Model 8635 Pressure Controller 800326 800248 Sensor Cable Technical Section 33 Troubleshooting Section The SUREFLOW Room Pressure Controller is designed to be trouble free However installation problems or interaction with other HVAC components may cause system problems The SUREFLOW system is easy to trouble shoot if an organized approach to evaluate the system is taken Troubleshooting is broken down into hardware and software problems Hardware problems deal with the physical installation of the device Hardware problems include wiring problems incorrectly installed equipment and add ons or non TSI equipment Software problems include
67. u Items The SUREFLOW is a very versatile device which can be configured to meet your specific application This section describes all of the menu items available to program and change except diagnostics menu Changing any item is accomplished by using the keypad or if communications are installed through the RS 485 Communications port If you are unfamiliar with the keystroke procedure please see Programming Software for a detailed explanation This section provides the following information Complete list of menu and all menu items Gives the menu or programming name Defines each menu item s function what it does how it does it etc Gives the range of values that can be programmed Gives default item value how it shipped from factory The menus covered in this section are divided into groups of related items to ease programming As an example all set points are in one menu alarm information in another etc The manual follows the menus as programmed in the controller The menu items are always grouped by menu and then listed in menu item order not alphabetical order Figure 5 shows a chart of all the Model 8635 C controller menu items SETPOINTS SETPOINT REM SETPOINT VENT MIN SET TEMP MIN SET TEMP LOW TEMP HIGH ACCESS CODE CONTROL SPEED SENSITIVITY CONTROL SIG OUTPUT MODE KC VALUE TI VALUE TD VALUE ACCESS CODE ALARM LOW ALARM HIGH ALARM REM LOW ALM REM HIGH ALM MIN SUP ALM ALARM RESET
68. ued The goods returned under warranty to Seller s factory shall be at Buyer s risk of loss and will be returned if at all at Seller s risk of loss Buyer and all users are deemed to have accepted this LIMITATION OF WARRANTY AND LIABILITY which contains the complete and exclusive limited warranty of Seller This LIMITATION OF WARRANTY AND LIABILITY may not be amended modified or its terms waived except by writing signed by an Officer of Seller SERVICE POLICY Knowing that inoperative or defective instruments are as detrimental to TSI as they are to our customers our service policy is designed to give prompt attention to any problems If any malfunction is discovered please contact your nearest sales office or representative or call TSI s Customer Service department at 800 874 2811 or 651 490 2811 CONTENTS HOW TO USE THIS MANUAL 0 0c0eccesesesecesesesececececscecscssssssssssscscsesssessscsssssesseees iii TE 1 USER BASICS ILLE 1 amp 1 Operator Panelne 3 INT ae 5 Before Calling 1 1 6 PART EWO 7 Technical Section teet eed dd 7 Software 7
69. ull closed won t move Sensor communications not working Actuator jumper is missing or loose Verify jumper is installed correctly Control wires are loose Check wires and verify control output is working see no control output signal If control output test passes verify damper is rotating correct direction see damper rotating opposite direction If damper is rotating correctly and set point cannot be reached DIM will fully rotate damper to get as close to set point as possible Air balance needs to be adjusted Check SENSOR STAT item in diagnostics menu If NORMAL is displayed sensor is okay If COMM ERROR is displayed check wiring pressure sensor address and that DIP switch 1 amp 2 are ON Figure 8 Sliding Pressure Sensor Incorrect pressure sensor address Problem with sensor slow uniform blink Communication fast burst of non uniform blinking Red LED is constantly on Incorrect pressure sensor output Technical Section ON ON OFF FOR REFERENCE SPACE FOR CONTROLLED SPACE ON FOR ADDRESS 1 OFF FOR ADDRESS 1 OFF OFF OFF OFF OFF OFF Figure 8 Pressure sensor DIP switch Pressure sensor must have address of 1 Check pressure sensor DIP switches 5 amp 6 and verify address 1 is correct 7 12 must be OFF Check SENSOR STAT and confirm NORMAL is displayed If ERROR is displayed correct error Unit is communicating with DIM This is normal
70. unit functions so it is critical to first determine if the unit is having mechanical problems i e no display on unit remote alarms don t function dampers don t modulate etc If problems still exist look for performance problems i e doesn t seem to read correctly display fluctuates etc The first step is to determine that the system is mechanically operating correctly followed by modifying the configuration to eliminate the performance problems Software Programming Programming SUREFLOW is quick and easy if the programming keys are understood and the proper keystroke procedure is followed The programming keys are defined first followed by the required keystroke procedure At the end of this section is a programming example NOTE The unit is always operating while programming unit except when checking the control outputs When a menu item value is changed the new value takes effect immediately after saving the change Technical Section 7 NOTE This section covers programming the instrument through the keypad and display If programming through RS 485 communications use the host computer s procedure The changes take place immediately upon saving data in the instrument Programming Keys The four keys with blue characters refer to Figure 4 are used to program or configure the unit to fit your particular application Programming the instrument will change how the unit functions so thoroughly review the items
71. y If the DIM displays English units area must be entered in square feet If metric units are displayed area must be entered in square meters ITEM RANGE 0 75 1 2 3 5 10 20 or 40 seconds FT MIN m s Pa mm 0 10 square feet 0 0 9500 square meters The DIM does not compute area The area must be first calculated and then entered into the unit 0 10 square feet 0 0 9500 square meters The DIM does not compute area The area must be first calculated and then entered into the unit DEFAULT VALUE 20 seconds H O OM Wed CONFIGURE MENU MENU ITEM SOFTWARE NAME FLOW FLO STA TYPE STATION TYPE MAXIMUM TOP FLOW VELOCITY STATION VELOCITY ROOM ROOM VOLUME VOLUME ITEM DESCRIPTION The FLO STA TYPE item is used to select the input signal for the flow station PRESSURE is selected when TSI flow stations with pressure transducers are installed LINEAR is selected when a linear output flow station is installed 0 5 VDC Typically a thermal anemometer based flow station The TOP VELOCITY item is used to input the maximum velocity of a linear flow station outputs A TOP VELOCITY must be input for linear flow station to operate NOTE Supply and exhaust flow stations must be the same velocity range NOTE This item is disabled if a pressure based flow station is installed The ROOM VOLUME item is used to input the volume of the room The room volume is required to calcula

Model 8635-C SUREFLOW Room Pressure Controller

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