USER MANUAL - Emerson Network Power
Contents
1. Power Source Relay Output 24 VAC 24 VAC 5 0 AMP 2 Unit Mode Only AC3 l N O Control Common Input Alarm Control Common Control Common Input Alarm Input Alarm Output Output UNIT 1 UNIT 2 Output UNIT 3 Figure 1 Typical System Configuration DISCONTINUED PRODUCT DISCONTINUED PRODUCT Section 1 INTRODUCTION The AC3 Autochangeover controller provides coordinated control in systems with redundant environmental units When an alarm is detected in a Running unit the AC3 enables a Standby unit and responds to the unit in alarm as programmed see below The AC3 controller also can balance the runtimes of the units by rotating the Running and Standby assignments The user can select from the control display panel Running and Standby unit assignments Switchover alarm delay Overlap Non overlap delay Autosequence interval Additional selections can be made via DIP switches accessible by opening the display panel e 2 or3 unit operation e Shutdown units on alarm e Overlap or Non overlap operation e Enable security code The AC3 display panel includes a custom LCD screen and a six button keypad A piezoelectric buzzer provides audible annunciation of alarms The electrical box contains an interface board with a power NOTE New Feature Inputs are supply 24 VAC input 3 contact closure inputs for the alarm now contact closures 24VAC s powered inputs longer signal from each unit2. and 3 relays to provide a dry contact necessary output to control each unit Common Alarm relay output in the 2 unit mode is also available Contact Liebert Environmental Support at 1 800 543 2778 regarding installation operation or warranty issues 0 Liebert 1 DISCONTINUED PRODUCT Specifications 2 e User Manual Electrical Specifications Voltage 24 VAC 10 of nominal Power 7 5 VA Phase 1 Frequency 50 60 Hz Environmental Conditions Operating Temperature 5 C to 40 C Operating Relative Humidity 0 to 95 non condensing Operating Altitude Dimensions Display Panel 3 1 2 H 5 W x 1 1 8 D 89mm x 127mm x 29mm Electrical Box 4 3 4 H x 121mm x 121mm x 70mm NOTE This equipment has been tested and found to comply with the limits for a Class digital device pursuant to part 15 of the FCC rules These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instruction manual may cause harmful interference to radio communications Operation of this equipment in a residential area Is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense NOTE When the following symbols are dis
3. omissions O 1996 Liebert Corporation All rights reserved throughout the world Specifications subject to change without notice All names referred to are trademarks or registered trademarks of their respective owners SL 31028 Rev1 8 99 Printed in U S A Su Ea So ga wo a
4. DISCONTINUED PRODUCT SITE MONITORING iebert Keeping Business in Autochangeover Controller USER MANUAL DISCONTINUED PRODUCT TABLE OF CONTENTS Section 1 INTRODUCTION 1 SPECIIEALUONS u RC PE ECT MEM 2 Section 2 INSTALLATION CR Re 3 3 Electrical COnnectiSnS s u oe etd A vnde ttes ds 3 Connection to Llebert EnVironmental UnifSu u u u l u u a nem G I i Qua 5 Section 3 HARDWARE CONFIGURATION 7 DIP Switch S llipgSu Eta daten tena Lem texta date mood eee 7 Common Alarm Output 22 4555 OR Pee eeepc cea 7 Section 4 OPERATION 0 is a u ulaqa u u u uu 9 LUD DISplay u nim ee D eg tatem i qiue a quati d iei sq eir 9 Set MOS teat eduxit c i ifr T uQ 10 TABLE OF FIGURES Figure 1 Typical System Configuration u Z a una a Tau E E E ii Figure 2 Flush Mount InstalatiOn U S haqa iqu auqa Q suwa sasata 4 Figure 2b Display Panel Mounted Remotely from Electrical Box a 6 Figure 3 Electrical Connections Electric Box and Display a 8 Figure 4 ECD DiISplay iii prp ette ten i eter RE ERR 9 Figure 5 Display Panel 4 24 42 tote dett eit rn pede tar c B 9 DISCONTINUED PRODUCT
5. E 2 1 6 1 4 1 7 1 5 SSC Small System TB2 1 TB3 1 Controller TB2 2 TB3 2 Table 1 Connection Summary Refer to Liebert ES amp S Tech Tip ET1082 for special instructions on AC3 connection to mini MATE mini MATE plus and DataMATE 0 Liebert 5 DISCONTINUED PRODUCT CONNECTED ELECTRICAL BOX 1 EARTH GROUND MUST BE INTERFACE ELECTRONICS NOTES OPTIONAL EXTERNAL TRANSFORMER LIEBERT P N AC3 CABLE a lt T 2 o E o A d LCD DISPLAY CONTROL ELECTRICAL BOX SEE NOTE 1 Figure 2b Display Panel Mounted Remotely from Electrical Box 6 e User Manual DISCONTINUED PRODUCT Section 3 HARDWARE CONFIGURATION DIP Switch Settings NOTE The DIP switches are read only when power is applied or when the RESET key is pressed NOTE Consult Liebert Environmental Service amp Support at 1 800 543 2778 for more information prior to enabling the security code Common Alarm Output The following user selectable operations are set by DIP SW1 on the display panel circuit board Position OFF ON 1 2 unit operation 3 unit operation 2 unit in alarm remains unit in alarm running shuts down 3 overlap mode non overlap 4 security code req d no security code In the overlap mode a Standby unit is turned on before the alarmed Running unit is turned off The user selectable OFF DELAY deter
6. NTINUED PRODUCT DISCONTINUED PRODUCT DISCONTINUED PRODUCT Liebert Autochangeover Controller THE COM PANY BEHIND LIEBERT CORPORATION THE PRODUCTS COLUMBUS OHIO 43229 With more than 500 000 installations around the globe Liebert 800 877 9222 PHONE is the world leader in computer protection systems Since its 614 841 6022 FAX founding in 1965 Liebert has developed a complete range of support and protection systems for sensitive electronics LIEBERT EUROPE LIEBERT ASIA e Environmental systems close control air conditioning from 1 5 to 60 tons e Power conditioning and UPS with power ranges from 250 GLOBE PARK 19 F CAUSEWAY BAY PLAZA VA to more than 1000 kVA MARLOW 489 HENNESSY ROAD e Integrated systems that provide both environmental and BUCKINGHAMSHIRE SL7 1YG CAUSEWAY BAY power protection in a single flexible package UNITED KINGDOM HONG KONG e Monitoring and control on site or remote from systems 44 1628 403200 PHONE 852 2 572 2201 PHONE of any size or location 44 1628 403203 FAx 852 2 831 0114 FAx e Service and support through more than 100 service centers around the world and a 24 hour Customer LIEBERT WEB SITE Response Center http www liebert com While every precaution has been taken to ensure accuracy and completeness in this literature Liebert Corporation assumes no responsibility and disclaims all liability for damages resulting from use of this information or for any errors or
7. buzzer will continue until the Silence Alarm button is pressed 0 Liebert 7 DISCONTINUED PRODUCT 1920112313 SISSVHO OL 03123NHH02 38 LSNIN Z SSV IO SLINIAIO TIV UV 130 404 dN 135 d3WO1S 2 OL 43434 HOILISOd HO IHL TIV 3dV SOMILLAS HILIMS did AdO12V4 318V2 310 34 31943 AdO 12V4 JHL 3941438 350 SI HOLLdO SHIELHOOM 310MW34 14 0 31 F 3LON 33S AV IdSId d3A039HVH2 olny AdO 19V43 JHL HdIA IVA Fc OL IVA 01 YIN TVIIOILdO 14 00 OMV 21 LINN WOY 03119405 HOLLO3HHO2 YIMOd IVA tc SHOLL23HHO2 TOULNOD 440 NO LINN SYIWOLSNO LV SLNdLNO AV TH dO JAIM V9 21 ISN Z JAIM V9 21 SHOLLO3HHO2 AVAA NAVY Tv HOWI02 LINN d3WO1S02 SLNANI LOVLNOD Aud L di VS DVAPZ JAQON LINN c 404 WdV Tv IIOWW02 HMOGLNHS 3LOINGU LINN OL anslz INua E 134 n18 a indNi H 193135 S JLON 33S S310H ALON 33S JLON 33S HflOu5 HLAY3 IYA Pz IvA pz T LNN ANYS LOYA Ls HMOGLNHS 310W3d L LINN AV Td IW TV NOD T LINN WONI AV T34 IW TV NOD 2 LINN WOd4 AVI IW TV aasnun L 3LON 33S Figure 3 Electrical Connections Electric Box and Display 8 e User Manual DISCONTINUED PRODUCT Section 4 OPERATION LCD Display During normal operation the display will indicate clock time and status of un
8. e AC3 may draw its power from an attached Environmental unit The default fail on fail off settings in effect whenever the AC3 loses power or if the AC3 fails internally are Unit 1 Fail ON Unit 2 Fail OFF Unit 3 if used Fail OFF If AC3 is powered from a unit under its control and if power is disconnected to that unit for whatever reason the AC3 will lose power and will be unable to exert control Thus if the AC3 must be powered from a unit under its control it should draw power from unit 2 or unit 3 Connection to Liebert Environmental Units NOTE Exercise caution if installing new AC3 as replacement unit remove power from signal inputs or damage to unit may occur Power must be supplied to AC3 at TB3 1 and TB3 2 Maximum current draw 15 0 3A at 24V AC Refer to Table 1 and Figure 3 for the remote shutdown and common alarm connections between the AC3 and Liebert Environmental units For 2 unit operation ONLY the common alarm output is enabled at TB3 3 and TB3 4 The output contacts are rated for SA at 24VAC Liebert Env 24VAC Common Alarm AC3 Output to Controller Auxiliary Output Remote Shutdown Power to AC3 Input Input pe on Terminals 75 76 Terminals 37 38 en Terminals T5 G5 Field Connections Field Connections L10 Level 10 Terminal Strip Terminal Strip Microprocessors L00 Level 00 TBI 1 Microprocessor 1 5 Terminals 75 76 Terminals 37 38 mini MAT
9. el Item 1 by gently prying open at the slots on the top and bottom of the display Do not remove factory wiring from the control assembly Attach the control panel rear plastic and the wall plate Item 2 to the electric box with two 2 screws 6 Snap display panel front onto the rear plastic part 7 Apply power to the AC3 Operate the system to test alarm monitoring Running and Standby unit operation control and customer selected options Call Liebert Environmental Support at 1 800 543 2778 if assistance 15 required for the installation or operation of your AC3 autochangeover controller The AC3 autochangeover controller requires four wire connections to each Environmental unit under its control two wires for alarm input the second pair for remote shutdown control 0 Liebert 3 DISCONTINUED PRODUCT Tv9l415313 OL Q3 L23NNOO 38 LSNW ANNOYS SALON SIINOY4 193713 39V3Y3 LNI L LON 33S Z X PIE V X VIE xog TOYLNOD AW1dSI0 097 LL X aZ Z 3lv ld TIVM S3lWO3SNVMN L TVN331X3 TWNOILdO AO LOV 3 Y3AO9 xog 215412913 Mount Installation Figure 2a Flush 4 e User Manual DISCONTINUED PRODUCT Caution Ensure Environmental unit has sufficient 24VAC power to support the AC3 Liqui tects or any other auxiliary device It is recommended that the AC3 be powered independently from an external 24V AC transformer Optionally th
10. isplay will return to normal Press SET to enter the Set mode 0 Liebert 9 DISCONTINUED PRODUCT Set Modes Press SET to enter Set mode These series of screens will program many of the operations of the AC3 autochangeover controller Use D INCREASE and 4 DECREASE buttons to change the values or to toggle through the choices Each successive press of the SET button advances to the next Set mode The Set modes are Clock hours Clock minutes Switchover alarm delay On off delay Auto cycle interval in days Unit 1 2 3 status Running or Standby The delays can be set from 0 to 19 55 19 minutes 55 seconds in 01 second intervals below 00 15 and in 10 second intervals above 00 15 If the INCREASE or DECREASE button is held the function will repeat and accelerate If a value is incremented past the maximum or decremented past the minimum the values will wrap Switchover Delay is the duration an alarm must be continuously present before the AC3 will annunciate the alarm or take any action This can be set from 0 no delay to 19 55 While the AC3 is in this delay a countdown will be displayed on the LCD If the alarm clears before the delay expires the AC3 will take no action and will return to normal operation In overlap mode a DIP switch selection a Standby unit is turned on before the alarmed Running unit is turned off The user selectable Off Delay determines the overlap time In the non overla
11. its For each Unit 1 2 and 3 the current assignment Running or Standby and the current alarm condition normal or in Alarm are displayed An active delay is counted down in seconds by using the clock display UNIT 123 RUNNING STANDBY ALARM OK SET AUTO CYCLE P 3 E MANUAL ONOFF H HZ SWITCHOVER DELAY AM CLOCK HOURS MINUTES DAYS Figure 4 LCD Display Pressing the SILENCE ALARM button will turn off the audible beeper The alarm input will remain active until it is cleared at the environmental unit Pressing the RESET button will initiate a system reset Normally Running units will be turned on separated by the Switchover Delay When the last Running unit is turned on all alarms are ignored during a built in 30 second hold delay Refer to the Hardware Configuration section on the operation of MANUAL OVERRIDE The display will flash the word Manual while in this mode Press RESET to clear and exit Auto Changeover EEE Figure 5 Display Panel If all the standby units are used because of alarms and the AC3 18 set for overlap mode all units will be turned on If the non overlap mode is selected the AC3 ensures that the number of units switched on is equal to the number of running units programmed The LCD display will show ASU to indicate that all standbys have been used When the alarms are cleared and RESET is pressed all units will return to their original status and the d
12. mines the overlap time the duration a Standby unit is in operation before the alarmed Running unit shuts down Pressing the RESET key in overlap mode will switch on all Running units first then shuts down the Standby units In MANUAL OVERRIDE all units are switched on The non overlap mode limits the number of units that can be operational at the same time this is useful if limited utility power is available In the non overlap mode a Running unit in alarm is shut down prior to a Standby unit being switched on The user programmable ON DELAY determines the interval to wait prior to enabling a Standby unit Pressing RESET to clear alarms will also cause Standby units to be switched off first prior to switching on Running units MANUAL OVERRIDE only as many units as assigned as Running units will be switched on Note that DIP switch position 3 has priority over position 2 in non overlap mode units with alarm will always be shutdown Security code features password protection to the Set mode menus making it more difficult for a casual or unauthorized person to change programmed parameters A Common Alarm output from the AC3 is available only if the system is controlling 2 units The Common Alarm relay is de energized during normal operation and the contacts are open The contacts will close during an active alarm on an operating unit but will reopen if when the unit in alarm is shutdown by the AC3 control Regardless the alarm
13. p mode the alarmed Running unit is turned off before a Standby unit is turned on The user selectable On Delay determines the waiting period before turning on the Standby unit The Auto cycle feature will automatically sequence a Running unit to Standby and a Standby unit to Running to equalize unit runtimes The new unit status will be updated on the AC3 display Auto cycle range is 1 to 99 days Cycling of units occurs at top of the hour 24 n hours from the time when Auto cycle was initialized where n equals the number of days programmed Enter 0 days to disable auto cycle When setting the status of each unit its current assignment will be displayed and the Set icon and the alternative assignment icon will be flashing Pressing INCREASE or DECREASE will toggle the status selection Press the SET to select 10 e User Manual DISCONTINUED PRODUCT Pressing SET after the last Set mode will return the AC3 to the normal operation If the status of any unit has changed because of user input the display will show a 10 second countdown This interval will allow all changes to be aborted by pressing SET before the countdown expires If RESET is pressed while in a Set mode the AC3 will register any changes and exit the Set mode immediately A system reset Is not performed Similarly if no keys are pressed for 20 seconds while in Set mode the AC3 will register changes and return to normal display mode 0 Liebert e 11 DISCO
14. played they indicate a Earth grounding conductor NY b Alternating Current 4 up to 2000 meters 0 5 lbs 0 23 kg 3 4 W x 0 91 kg DISCONTINUED PRODUCT 2 3 4 D Section 2 INSTALLATION Mounting NOTE Use minimum 18 gauge wire for all customer interface wiring Electrical Connections The AC3 is completely tested then shipped from the factory disassembled for your convenience during installation To begin flush mount installation refer to Figure 2a An optional 30 foot control cable can be supplied to allow the display to be located remotely from the electrical box Refer to Figure 2b The electric box containing the power supply is designed for flush mounting into a finished interior wall wall plate 15 supplied to cover the drywall opening with the display mounted directly in front of the wall plate electric box 1 Mount the electric box Item 5 in the wall at a convenient location 2 Make each power and unit connection to Item 4 by inserting bare wire end into compression terminal and tightening screw Refer to Electrical Connections section If 30 foot cable is used disconnect factory wire harness and attach cable to screw terminals per Figure 3 3 Route control cable through wall plate and electric box cover then connect to electrical box at TB1 on Item 4 4 Attach electric box cover Item 3 with two 2 screws 5 Remove the front cover from the AC3 display pan
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