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MTDT24 User Manual.pmd
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1. 22 23 24 Common COLOR BLACK BLUE GREEN RED YELLOW CLEAR BROWN B 1M 117124 Lemperature Scanner AV m U AA MTDT24 Temperature Scanner PROCESS SENSORS AND CONTROLS Varistor Installation 10 30 2012 Varistors are used to suppress electrical surges and noise When used on an MTDT24 Temperature Scanner they suppress the spark caused when the relay contacts are opened or closed Specs 130VAC Maximum Contact Maxi Tronic for other voltage options Connect the varistors across each of the relay output terminals Maxi Tronic Inc 417 Wards Corner Rd Loveland OH 45140 513 398 2500 800 659 8250 info maxitronic com PROCESS SENSORS AND CONTROLS 417 Wards Corner Rd Loveland OH 45140 TEL 513 398 2500 FAX 513 398 2536 www maxitronic com info maxitronic com WIRING A SINGLE ALARM OUTPUT FOR MULTIPLE MOTION AND MTDT 24 TEMPERATURE SCANNER CONTROLLERS MT 400A CIRCUIT BOARD ACCOM E AC COMMON EGND 1 FROM MOTOR 117VAC Factory Yellow Wire conr ALM RELAY RIC STARTER CIRCUIT STARUP B MEN o OUTPUT 120VAC FROM STARTUP A MOTOR STARTER FROM NEXT CIRCUIT MT400 PCB jel DIN RAIL 117VAC ALARM ISOLATION RELAYS RELAY OUT LAC COMMON JUMPERS AC COMMON EARTH GROUND 117 VAC INPUT ALARM 117V ALARM TERMINAL STRIP Hi Temp Rate Rise VAC COM MTDT 24 UNIT OPTIONAL 2 11 2014 Wop 9IUOJ IXeUJ D OJul 0928 660 008 P LR 0
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3. MTDT24 24 POINT TEMPERATURE SCANNER Installation amp User Manual 5 30 2012 SCAN DISPLAY ALARM SEL i SET CLR SCAN DISPLAY ALARM Maxi Tronic Inc Loveland OH 45140 USA 513 398 2500 800 659 8250 Fax 513 398 2536 Wwww maxitronic com info maxitronic com OVERVIEW The MTDT24 is a microprocessor based temperature controller which will scan display and actuate alarms for up to 24 thermocouple sensors High Temperature Limit and Rate of Rise alarm set points are easily configured and each can activate the 5A SPST N O or N C relay An RS232 or RS485 option is available for remote operation up to 2000 feet away using wire and over 2 miles for the wireless connection option The MTDT24 is fully compatible with the computerized MaxiTrack remote monitoring system providing data archiving and email and cell phone alarm notifications DISPLAY The 16 character display shows the sensor number the sensor ID if programmed current temperature alarm enabled status and any activated alarms indicates the alarm for this sensor number is enabled F indicates a High Temperature alarm for the sensor number listed R indicates a Rate of Rise alarm for the sensor number listed EX In this example sensor 20 is labeled DRY LEG HD L itis reading 83F and its alarm is enabled Also both High Temperature and Rate of Rise alarms are tripped on sensor 24 20 DRY LEG HD L Temp 083F FR24 If a sens
4. SCAN RATE The sensor scan rate is adjustable from 1 0 to 4 0 seconds per sensor The Scan option is selectable for Automatic scanning or Manual operation ALARM OPERATION Each sensor s alarm can be enabled or disabled An asterisk will display next to each sensor s temperature reading when its alarm is enabled Ex 24 Temp 073F High Temperature alarm The High Temperature alarm setpoint is the same for all sensors If you want the High Temperature alarm to activate at 140 F then all sensors will alarm at that point If the High Temperature set point is reached on a sensor an F will display along with the sensor number that tripped the alarm Example F 24 NOTE Relay 1 will remain tripped until the temperature falls back below the alarm set point Rate of Rise alarm The Rate of Rise alarm is adjustable from 1 to 99 F Ex 10F temperature change Ifthe temperature increases by this amount from the previous scan then the alarm will trip This setting is the same for all sensors If the Rate of Rise limit is reached on a sensor an R will display along with the sensor number that tripped the alarm Example R24 NOTE Relay 2 will remain tripped only while the rate of rise limit is exceeded for a scan cycle SILENCING THE ALARM PRESS THE SET or CLR BUTTON TO SILENCE THE ALARM s gt Note SET will allow the scanner to continue scanning BUT will prevent any new alarms from tripping until the
5. VAC input voltage contact Maxi Tronic for a 230VAC model The RS 485 output is fully compatible with MaxiTrack remote monitoring system providing data archiving and email and cell phone alarm notifications Note If this unit is being used within a Maxi Tronic multi monitor control housing the input power will be pre wired TRIP 1 F High Temperature Alarm TRIP 2 R Rate of Rise Alarm RS 485 I TRIP TRIP L1 L2 optional 4 2 120VAC x HORN Typical High Temp Alarm Wiring RELAY OUTPUTS Relay contacts are rated at 5 amps 11 7VAC SPST N O or N C user selectable Scanners are set for N O relay operation at the factory High Temperature alarm F relay output is located on terminals 5 and 6 If this is being used within a Maxi Tronic multi monitor this will be pre wired for a common alarm output typically through DIN rail isolation relays with other Maxi Tronic controls Rate of Rise alarm R relay output is located on terminals 3 and 4 on the terminal strip SYSTEM TESTING Disconnect a sensor wire and the scanner should sound the alarm and display the sensor number A display of 230F indicates a broken open thermocouple sensor wire SYSTEM CONFIGURATION After making any configuration changes to the MTDT24 you should cycle the power off for a couple seconds then back on of the MTDT24 to reset it The following options are available through the MTDT24 menu system
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7. es II Introduced 2008 Supply 120VAC 50 60 HZ Relays 5A Normally Open Closes on alarm Maxi Tronic Inc 3530 Irwin Simpson Rd Mason OH 45040 513 398 2500 800 659 8250 info maxitronic com PIGTAIL WIRING The MTDT 24 Scanners are provided with a pigtail cable pre wired to the 25 pin D Sub connector on the back of the unit Crimp your sensor wiring to the pigtail only use the supplied crimps COLOR CODING FOR THE PIGTAIL The pigtail consists of two 12TC leadwires soldered to a 25 pin D Sub connector Each leadwire has 2 Commons and 12 sensor inputs for a total of 4 commons and 24 inputs The Commons White and Brown are wrapped around a Group of 6 Sensor Inputs wires The Commons have a siver colored conductor and the Sensor Inputs have a copper colored conductor pull the insulation back a little to see the color of the conductor inside Match the polarity silver vs copper conductor when attaching sensors Note all the Commons are tied together and can be used interchageably LEAD WIRE 1 WHITE COMMON GROUP STATION COLOR BLACK BLUE GREEN RED YELLOW CLEAR Common WHITE O Q gt amp N gt BROWN COMMON GROUP STATION COLOR f BLACK 8 BLUE 9 GREEN 10 RED 11 YELLOW 12 CLEAR Common BROWN LEAD WIRE 2 WHITE COMMON GROUP SIATIONZ COLOR 13 14 15 16 17 18 BLACK BLUE GREEN RED YELLOW CLEAR Common WHITE BROWN COMMON GROUP STATIONZ 19 20 21
8. or name is not programmed the sensor s ID number 1 through 24 is displayed SENSOR INPUT This unit only accepts ungrounded Type T thermocouple Copper Constantan input You must use Type T thermocouple leadwire extension wire when connecting all sensors to this unit Do not use plain copper wire when running sensors to the MTDT24 scanner Proper polarity must be observed when making thermocouple connections There are silver colored Constantan common conductors and a copper colored Copper conductors The unit will not function correctly if plain copper wire is used or if proper thermocouple polarity is not observed sensor input connector 25 Pin D Sub type socket Connect the Copper leads coming from the sensors to inputs 1 through 24 All Constantan leads should be joined and connected to input 25 All unused inputs should be jumpered to pin 25 female socket view 13 Type T Thermocouples ooo e o o EC UC Copper leads 1 24 25 OOOOOOOOOOOO 44 All Constantan leads 25 oee the Pigtail Wiring section at the back of this manual for further wiring instructions Note A broken thermocouple will typically read 230F INPUT POWER Input power should not be applied until all thermocouple sensor inputs have been connected Connect 115 VAC input voltage to terminals 1 and 2 For wall mount units these will be the two terminals closest to the internal transformer Units are factory set up for 115
9. unit is reset Note CLR will silence the alarms and stop the unit from scanning Placing the unit back in scan mode will reset the unit and allow new alarms to trip The alarm will be silenced as long as any sensor remains tripped When all sensor s gets back within limit and the alarm condition no longer exists then the silenced alarm will automatically reset and re enable itself You can manually reset and re enable a silenced alarm by Pressing CLR then going back into Scan mode Or by cycling the power off for a couple seconds then back on of the MTDT24 unit To lock out a sensor i e a malfunctioning sensor and prevent it from tripping false alarms DISABLE that sensor Restart cycle the power the MTDT24 after making this change PROGRAMMING The unit is programmed through the 5 pushbutton switches on the front of the control e Press SEL to step through the options e Press SET to pick an option e Use the arrow keys to step through sensors toggle a setting On Off and to enter chracters and numbers e Press SET after using the arrow keys to enter and save a change e f you make a mistake entering an ID save it then go back in and re enter the ID Note You are limited to 12 characters for a sensor ID entering more will overwite the following sensor s ID dais siu UO 12 Ss 1d jou oq _ Josues X9U ou o HUIAOLU NOUJIM Josues U811N9 Bu 1 IX pue BABS 0 FAS ssaJg LIX3 dAVS ldS XV H
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