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T775J
Electronic Remote Temperature Controller
PRODUCT DATA
FEATURES
• T775 model provides reset control with two
temperature inputs and one of either 4 to 20 mA, 0 to
a
18 Vdc, or Electronic Series 90 Proportional + Integral
modulating output with 0 or 1 relay output stages, or 1
or 2 relay output stages with no modulation.
• -40°F to +220°F (-40°C to +105°C) setpoint temperature
range.
• -45°F to +225°F (-43°C to +107°C) sensor display
range.
• -30°F to + 140°F (-34°C to +60°C) ambient temper
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T775J ELECTRONIC REMOTE TEMPERATURE CONTROLLER Electrical Ratings: SPECIFICATIONS Voltage Input: 24/120/240 Vac, 50/60 Hz (+10/-15%). Power Consumption: IMPORTANT 50 Hz: 10 VA maximum. The specifications given in this publication do not 60 Hz: 8 VA maximum. include normal manufacturing tolerances. Therefore, an individual unit may not exactly match the listed Contact Ratings: specifications. Also, this product is tested and 1/2 HP: 9.8 FLA, 58.8 LRA at 120 Vac. calibrated under closely controll
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T775J ELECTRONIC REMOTE TEMPERATURE CONTROLLER Mounting: Mounts on any suitable horizontal or vertical surface. (See CAUTION Fig. 5 for mounting hole locations.) Disconnect power before installation to prevent electrical shock or equipment damage. Dimensions: See Fig. 1. Location and Mounting Display Resolution: Mount the controller in any convenient interior location using Sensed temperature and other operating parameters are the two mounting holes provided. Mounting screws are not displayed vi
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T775J ELECTRONIC REMOTE TEMPERATURE CONTROLLER Mounting Sensor in T7047C1090 Case Wiring Run wires from T775J through wall. Mount case to wall with screws provided. CAUTION Connect wires from the T775J to two T terminals on the T7047C Case. Disconnect external power before wiring to prevent Cut and strip 193987GA Sensor leads to 3 to 4 inch (76 electrical shock or equipment damage. to 102 mm) length and connect to T terminals in the case. IMPORTANT Position sensor as shown in Fig. 3; a
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12 3 4 120V COM 240V 12 3 4 120V COM 240V T775J ELECTRONIC REMOTE TEMPERATURE CONTROLLER LCD TEMPERATURE C/F DISPLAY O O C / F SELECTION PROGRAMMING KEYS SET SELECT ENTER SENSOR INPUT, RESET DIP SA SB TOD, AND SWITCHES 24V TERMINALS MOUNTING HOLE 1 23 4 5 67 8 LOCATION SA TOD 24V SB KNOCKOUT "A" 2 1 3 MODULATING OUTPUT ELECTRONIC SERIES 90, 4-20 mA OR 0-18 VDC LINE DEPENDING ON MODEL VOLTAGE INPUTS OUTPUT 1 OUTPUT 2 NO COM NC NO COM NC KNOCKOUT "C" KNOCKOUT "B" RELAY OUTPUT STAGES M8118 F
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12 3 4 12 3 4 120V 120V COM COM 240V 240V 2 1 3 4 120V COM 240V 12 34 120V COM 240V T775J ELECTRONIC REMOTE TEMPERATURE CONTROLLER C/F C/F SET SELECT ENTER SA SB SET ENTER SELECT SA SB SENSOR A 1 23 4 5 67 8 SA TOD 24V SB SENSOR B 3 2 1 SENSOR A 1 23 4 5 67 8 24 VAC SA TOD 24V SB SENSOR B 2 1 3 BLK 240 VAC OUTPUT 1 OUTPUT 2 RED NO COM NC NO COM NC LOAD 1 LOAD 2 OUTPUT 1 OUTPUT 2 LOAD 1 NO COM NC NO COM NC M8111 LOAD 2 M8113 Fig. 7. Reset control with 24 Vac input, Fig. 9. Reset control with 240
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12 3 4 120V COM 240V 12 3 4 120V COM 240V T775J ELECTRONIC REMOTE TEMPERATURE CONTROLLER ELECTRONIC SERIES 90 MODUTROL MOTOR C/F T1 T2 BR W SET SELECT ENTER SA SB SENSOR A 1 23 4 5 67 8 24 VAC SA TOD 24V SB SENSOR B 3 2 1 POWER INPUT BR W 1 LOAD 1 OUTPUT 2 NO COM NC T775J USE SEPARATE TRANSFORMER FOR T775 WHEN POWERING FROM 24 VOLTS. 1 NOTE: T775J1019, T775J1043 PROVIDE ELECTRONIC SERIES 90 OUTPUT THAT WILL NOT DRIVE 135 OHM SLIDEWIRE DEVICES. PROPER OUTPUT LEVELS CAN BE CHECKED BY MEASURING
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12 3 4 120V COM 240V 12 3 4 120V COM 240V T775J ELECTRONIC REMOTE TEMPERATURE CONTROLLER MODULATING MOTOR WITH VOLTAGE CONTROL INPUT C/F T1 T2 C R F SET SELECT ENTER SA SB SENSOR A 1 23 4 5 67 8 SA TOD 24V SB SENSOR B 3 2 1 POWER INPUT - + BLK 240 VAC OUTPUT 2 RED NO COM NC LOAD 1 M8117 Fig. 13. Reset control with 240 Vac input, 240 Vac and 0 to 18 Vdc loads. 1 L2 L1 (HOT) M954 OR M955 MODUTROL® MOTOR DIP SWITCHES FOR SENSOR TO R LOAD SELECTION. TR C/F W TR 2 B SET SELECT ENTER SA SB M954 O
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4 12 3 120V COM 240V T775J ELECTRONIC REMOTE TEMPERATURE CONTROLLER DIP SWITCHES FOR SENSOR TO LOAD SELECTION. ML984 ACTUATOR C/F T1 T2 BR W SET SELECT ENTER SA SB 23 5 1 4 67 8 SA TOD 24V SB 1 250 OHM 3 2 BR W POWER INPUT 1 1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OUTPUT 1 OUTPUT 2 OVERLOAD PROTECTION AS REQUIRED. NO COM NC NO COM NC M4716 Fig. 15. Reset control with ML984 Valve Actuator. Use shielded cable if any of the above conditions cannot be avoided. CAUTION The T775J wi
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T775J ELECTRONIC REMOTE TEMPERATURE CONTROLLER Determine the desired Reset Direction (up or down) To avoid this time delay, press Select. and enter on the Device Programming Worksheet. This Press Select and Enter keys simultaneously to begin will determine if the setpoint for the control Sensor A programming the load operating mode (heat or cool). will be reset up or down. The display will indicate heat or cool and the stage Determine the desired Reset Compensation Setpoint number. for S
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T775J ELECTRONIC REMOTE TEMPERATURE CONTROLLER Press Enter to enter the displayed value into memory. Calibration Setpoint for Cooling Mode (Fig. 13) Press Select four times to return to stage 1 parameters. Setpoint for calibrating the lower voltage level (closed Scroll through the programming loop a second time to position): confirm that the appropriate values have been entered AB into memory. Sensed Temperature 78° Add 3° F or C to above: +3° NOTE: The T775J has three options for displaying
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120V COM 240V 120V COM 240V 12 34 120V COM 240V T775J ELECTRONIC REMOTE TEMPERATURE CONTROLLER STEP 1 STEP 2 VOLTAGE SPAN ZEROING SELECTION SWITCH VOLTAGE DIAL 1 2 3 4 OPEN 17 3 8 14 SET SELECT ENTER SA SB 23 5 1 4 67 8 SA TOD 24V SB 3 2 1 3 2 1 MODULATING VOLTAGE OUTPUT SENSOR INPUT, TOD, AND 24 VAC TERMINALS OUTPUT 1 OUTPUT 2 OUTPUT 1 OUTPUT 2 NO COM NC NOCOM NC NO COM NC NOCOM NC GENTLY PULL THE TOP PWB UPWARDS AROUND REMOVE FRONT COVER AND LOOSEN SCREW ITS HINGE. STOP WHEN THE PWB IS IN UP
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T775J ELECTRONIC REMOTE TEMPERATURE CONTROLLER HEATING MODE MODULATION SENSED o TEMPERATURE = 78 F THROTTLING DEAD BAND RANGE CALIBRATION o SETPOINT 75 F MODULATION MODULATION * DEADBAND IS 1/8 OF THE THROTTLING RANGE COOLING MODE CALIBRATION o MODULATION SETPOINT 81 F SENSED o THROTTLING TEMPERATURE = 78 F RANGE DEAD BAND MODULATION * DEADBAND IS 1/8 OF THE THROTTLING RANGE M2149C Fig. 17. Explanation of calibration setpoints for heating and cooling modes. the modulating output will be desig
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T775J ELECTRONIC REMOTE TEMPERATURE CONTROLLER RESET DIRECTION SWITCH temperature goes down, the control point goes down). The RESET DIRECTION SWITCH: WILL RESET type of ratio is selected by using the two DIP switches 1 THE COUNTROL POINT UP (WHEN provided. OPEN) OR DOWN (WHEN CLOSED). 2 RESET ACTION SWITCH The four possible reset operating configurations are illustrated RESET ACTION SWITCH: RESET IF THE and explained in Fig. 18. Switches 1 and 2 are shown but OUTDOOR TEMPERATURE (SENSOR B) IS
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12 3 4 12 3 4 OPEN OPEN 12 3 4 12 3 4 OPEN OPEN T775J ELECTRONIC REMOTE TEMPERATURE CONTROLLER SETPOINT "B" (OUTSIDE TEMPERATURE) BELOW ABOVE RESET DIRECTION RESET DIRECTION A A B B SWITCH SWITCH RESET ACTION RESET ACTION C D C D SWITCH SWITCH RESETS CONTROL SETPOINT A UP RESETS CONTROL SETPOINT A UP WHEN SENSOR B (OUTSIDE WHEN SENSOR B (OUTSIDE TEMPERATURE) IS BELOW SETPOINT. TEMPERATURE) IS ABOVE SETPOINT. RESETS CONTROL SETPOINT A DOWN RESETS CONTROL SETPOINT A DOWN WHEN SENSOR B (OUTSIDE
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T775J ELECTRONIC REMOTE TEMPERATURE CONTROLLER degradation. This modulation output can be used with A second set of DIP switches provides voltage range TM Honeywell Inc Modutrol IV Motors that accept an input selection for 0 to 18 Vdc modulating devices. The span signal of 4-20 mA or other Honeywell Inc motors with the corresponding to each switch is given on the printed wiring use of resistor kits. board below each switch. Fig. 16 shows the location of this • 0-18 Vdc (voltage ranging): This ou
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T775J ELECTRONIC REMOTE TEMPERATURE CONTROLLER The device hardware was configured to a nonexistent Display device. This error cannot be field repaired. Replace Once power is applied or restored to the device, the display the device. will count down from 210 until the display reads zero, during OE—ROM Error. which time any previously energized outputs will be de- The internal ROM of the microprocessor is defective. energized. This is intended to protect compressors in the This error cannot be fie
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T775J ELECTRONIC REMOTE TEMPERATURE CONTROLLER g. Divide Reset Ratio B value by Reset Ratio A CHECKOUT value. h. Multiply the result in step g. by Temp Diff After the controller is installed and wired, apply power. Using (step a.). the programmed control values, verify device operation after i. If Reset Direction Switch is set to increase, completing Table 3. disregard any negative signs and add the amount As illustrated in the example, record the sensed of reset calculated in step h. to the o
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T775J ELECTRONIC REMOTE TEMPERATURE CONTROLLER Table 3. Checkout Table. Checkout Table Checkout Table Example Reset Reset Reset Reset Heat or Value Value Heat or Load 1 Load 2 Value Value Cool Load 1 Load 2 Load 1 Load 2 Cool Heat Heat Load 1 Load 2 Sensor Sensor A A ____ 80° Sensor Sensor B B ____ 10° 120° Off 116° On 118° Off Sensed 80° Off 80° 80° 80° Sensed Temp Temp 78° Off 76° On 74° On Setpoint B ____________ Reset Direction __________ Setpoint B 30° Reset Direction Increase Sensor B
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T775J ELECTRONIC REMOTE TEMPERATURE CONTROLLER Home and Building Control Home and Building Control Helping You Control Your World Honeywell Inc. Honeywell Limited-Honeywell Limitée 1985 Douglas Drive North 740 Ellesmere Road Golden Valley, MN 55422 Scarborough, Ontario QUALITY IS KEY M1P 2V9 63-2248—4 Rev. 9-95 Printed in U.S.A. www.honeywell.com/building/components 63-2248—4 20
