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T775R Series 2000 Electronic
Stand-Alone Controller
Controller
a
Model
Description
T775R2001 Reset Option N/A
T775R2019 Reset Option N/A
T775R2027 Reset Option T775J1043
T775R2035 Reset Option T775J1001
T775R2043 Reset Option T775J1019
a
All models include a digital input for use with the disable or setback option.
b
The modulating (analog) outputs are 4-20 mA, 0-10 Vdc, 2-10 Vdc, or Series 90 selectable.
c
Each floating output eliminates two SPDT relay outputs.
d
The T775R2043 can support a high/low modulating limit at Sensor B for temperature control at Sensor A.
Table 1. T775R Controller Configurations.
SPDT Relay
Replaces
Outputs
4
4
2
T775J1050
T775J1068
2
T775J1076
None
T775J1027
T775J1035
INSTALLATION INSTRUCTIONS
PRODUCT DESCRIPTION
The T775 electronic stand-alone controllers are the next
generation of commercial and agricultural controls
capable of remote sensing of temperature and providing
switched and/or proportional outputs to various types of
loads. A built-in time clock is standard.
A Reset function is available for all T775R models where
the Sensor B temperature (e.g. outside temperature) is
used to provide reset control for the Sensor A
temperature (e.g. boiler). For example, as the outside
temperature gets colder, the setpoint temperature
automatically adjusts to save energy.
Three T775R models have analog (modulating) outputs
for actuator and motor control.
IMPORTANT
The T775R is an operating control, not a limit or
safety control. If used in applications requiring
safety or limit controls, a separate safety or limit
control device is required.
Analog
(Mod)
Floating
b
Outputs
Outputs
None
2
2
None
2
None
None
1
2
None
Nbr of
Sensor
Sensors
c
Inputs
Included Enclosure
2
2
NEMA 1
2
2
NEMA 1
2
2
NEMA 1
2
2
NEMA 1
2
NEMA 1
d
2
62-0249-13
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Table of Contents
Related Manuals for Honeywell T775R 2000 Series
Summary of Contents for Honeywell T775R 2000 Series
- Page 1 T775R Series 2000 Electronic Stand-Alone Controller INSTALLATION INSTRUCTIONS PRODUCT DESCRIPTION The T775 electronic stand-alone controllers are the next generation of commercial and agricultural controls capable of remote sensing of temperature and providing switched and/or proportional outputs to various types of loads.
- Page 2 T775R SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER Temperature Sensors Accessories The controller accepts 1,097 Ohms PTC at 77° F (25° C): • 107324A – Bulb Holder, duct insertion • 50021579-001 – Standard sensor (2 standard sensors • 107408 – Heat Conductive Compound, 4 ounce are included with each T775R model) •...
- Page 3 T775R SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER BEFORE INSTALLATION Review the “Specifications” on page 36 before installing Mount the controller on any convenient interior location the controller. using the four mounting holes provided on the back of the enclosure using #6 or #8 screws (screws are not provided and must be obtained separately).
- Page 4 T775R SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER Temperature Sensor Wiring For example, in a reset control based on outside temperature, Sensor A must be the inside sensor and Sensor B must be the outside sensor. CAUTION Multiple Parallel Sensors Electrical Shock Hazard. Multiple sensors can be parallel-series wired to sense Can short equipment circuitry.
- Page 5 T775R SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER Controller Wiring Access to the terminals can be gained through standard conduit knockouts (A through E in Fig. 7 on page 6) located around the perimeter of the enclosure: • Knockouts A and B should be used only for sensor and WARNING low-voltage wiring.
- Page 6 T775R SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER Table 2. Description of Wiring See Figures 8 through 18 for typical T775R wiring applications. Terminal Connections. (Continued) Connection Terminal Label Description KNOCKOUT A 120 or 240 Vac Power SENSOR A 120 Vac 120 Vac Power MOD 1 –...
- Page 7 T775R SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER SENSOR B SENSOR A SENSOR B SENSOR A (HOT) 24 VAC 120V LOAD LOAD LOAD LOAD LOAD LOAD 1 LOAD 4 LOAD M24286A 1 FOR 240 VAC LOAD, CONNECT TO 240 TERMINAL. M24288A Fig. 9. Wiring for Four-Stage Control – 24 Vac Input Fig.
- Page 8 - MAXIMUM (DRIVE OPEN) SIGNAL IS GREATER THAN 1.7 VDC IF USING THE SAME TRANSFORMER TO POWER BOTH THE T775 AND THE MOTOR, COMMONS ARE POLARITY SENSITIVE. MOTORS HONEYWELL MODUTROL MOTOR WITH MUST BE HALF WAVE RECTIFIED. 4-20 mA MODULATING INPUT INSERT 340 OHM RESISTOR (INCLUDED) ACROSS TERMINALS R AND W.
- Page 9 T775R SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER CHECKOUT Table 3. Temperature Sensor Calibration for Resis- Inspect all wiring connections at the controller terminals, and verify compliance with the installation wiring tance Loss due to Wire Length (Feet). diagrams. Temperature Offset in °...
- Page 10 T775R SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER INTERFACE OVERVIEW Left and Right Arrow Buttons ( The T775R controller uses an LCD panel and 6-button and keypad to provide status information and permit user input Use these buttons to move backward () and forward () of the programming, setup, and scheduling parameters.
- Page 11 T775R SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER Accessing the Menus NOTES: If you press the HOME button or there is no Menus are used for programming, scheduling, viewing the keypad activity for four minutes, you exit summary settings, and setup of advanced options. Program mode and return to the home screen.
- Page 12 T775R SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER IMPORTANT To use the Reset feature, the first output (MOD 1 or Relay 1. This action sets the maximum setpoint value of 1 depending on the model) must be set to Reset=YES in all outputs to the setpoint high limit maximum. Setup mode (See “1.1.
- Page 13 T775R SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER A single reset curve is programmed for the first output and is used by all outputs setup °F with RESET=YES. For subsequent outputs (MOD and Relay), a SP MAX A1 setpoint offset is used if that output is also being (BOILER MAX) Reset.
- Page 14 T775R SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER 1.2.2. SP MAX A1 or BOILER MAX MENU PROGRAM PROGRAM RELAY 1 RELAY 1 Setpoint maximum for Sensor A. SP MAX A1 SP MAX A1 1. From the menu, use the and buttons to high- light BOILER MAX or SP MAX A1.
- Page 15 T775R SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER 1.2.6. DIFFERENTIAL or THROTTLING MENU PROGRAM PROGRAM RANGE RELAY 1 RELAY 1 DIFFRNTL DIFFRNTL Differential displays for Relay outputs and Throttling Range is used for Modulating outputs. 1. From the menu, use the and buttons to high- light DIFFERNTL or THROT RNG.
- Page 16 T775R SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER 1.2.9. Subsequent Outputs MENU MENU PROGRAM PROGRAM PROGRAM RELAY 2 For the subsequent outputs (MOD 2, Relay 2, Relay 3, RELAY 2 RELAY 2 OFFSET etc. (if they are configured for Reset), the Offset OFFSET parameter displays on the Program menu as shown in DIFFRNTL...
- Page 17 T775R SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER 2.1.1. Program Menu for Outputs with MENU No Reset PROGRAM PROGRAM RELAY 1 RELAY 1 Press the MENU button, select PROGRAM, then highlight SETPOINT the MOD or Relay desired and press the button to view DIFFRNTL SENSOR the parameters.
- Page 18 T775R SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER 2.1.4. SENSOR MENU PROGRAM PROGRAM RELAY 1 RELAY 1 1. From the menu, use the and buttons to high- SENSOR SENSOR light SENSOR. SENSOR A 2. Press the button to display the sensor selections. SENSOR B 3.
- Page 19 T775R SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER 3. SETUP (ADVANCED Setup Procedure OPTIONS) The Setup process uses a hierarchical menu structure that is easy to use. You press the and arrow buttons to move forward and backward through the menus. Setup provides the ability to change the factory default settings for the temperature sensors and outputs, to NOTE: The menus can display only those relays that...
- Page 20 T775R SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER 3.2.2. SENSOR A SETUP SETUP SENSORS If you are implementing two-sensor reset control, Sensor SENSORS SENSOR A SENSOR A A must always be the controlled temperature and Sensor UNITS B must always be the controlling temperature. For CALIBRATE example, in a reset control based on outside temperature, LABEL...
- Page 21 T775R SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER 3.2.2.4. Exit Sensor A Setup Press the button to exit Sensor A selections and return to the Sensors menu. Use the and buttons to highlight EXIT and press the button. 3.2.3.
- Page 22 T775R SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER 3.2.3.3.1. HI LIMIT or LOW LIMIT (Sensor B SETUP SETUP only) SENSORS SENSORS SENSOR B SENSOR B Fig. 52 shows the Hi Limit, but the process is the same for CALIBRATE setting the Low Limit. This applies to the T775R2043 LABEL SETUP model only.
- Page 23 T775R SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER 3.3.3.1. Setting up the Modulating SETUP SETUP Outputs OUTPUTS OUTPUTS MOD 1 MOD 1 1. From the Output menu, use the and buttons to TYPE highlight the desired modulating output (MOD 1 or MIN OUT % MOD 2).
- Page 24 T775R SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER NOTES: purpose of integral action is to reduce or eliminate a. The Integral time is factory set for 400 seconds and is the offset from setpoint during steady state control similar to the response time to the T775J Series 1000 that is often seen in proportional only control.
- Page 25 T775R SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER SETUP 3.3.3.1.6. RESET SETUP OUTPUTS OUTPUTS RELAY 1 MOD 1 This selection enables the controller’s Reset function, and RESET MOD 1 allows each output to be individually programmed for YES-BOILER Reset or No Reset. YES-OTHER IMPORTANT To use the Reset function of the controller, the...
- Page 26 T775R SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER 3.3.5. OPTIONS SETUP SETUP OUTPUTS OUTPUTS 1. From the Outputs menu, use the and buttons OPTIONS OPTIONS to highlight OPTIONS. USE SCHED 2. Press the button to display the Options menu. MIN OFF MIN ON DI OPTS SHOW RT...
- Page 27 T775R SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER SETUP 3.3.5.3. DI OPTIONS SETUP (digital input options) OUTPUTS OUTPUTS OPTIONS OPTIONS The DI Option you select applies to all outputs. This DI OPTS DI OPTS option overrides any Setpoint/Setback values entered in DISABLE the Schedule.
- Page 28 T775R SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER SETUP 3.3.5.5 SYNC SETUP (synchronize setpoint changes) OUTPUTS OUTPUTS OPTIONS OPTIONS 1. Press the button to display the Sync values. SYNC SYNC 2. Use the and buttons to select YES or NO. 3.
- Page 29 T775R SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER 3.3.6.1.1. Floating Relay Menu SETUP SETUP OUTPUTS OUTPUTS The Floating option is only available on the T775R2001 FLOAT 1 FLOAT 1 and the T775R2035 models. TYPE ACTUATOR When Relay 1 and/or Relay 3 is setup as floating, relays INTEGRAL are paired and the Float 1 or Float 2 menu displays with DERIVATIV...
- Page 30 T775R SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER SETUP 3.3.6.1.1.3. DERIVATIV SETUP (modulating/floating OUTPUTS OUTPUTS FLOAT 1 FLOAT 1 relay only) DERIVATIV DERIVATIV The Derivative option displays only on the T775R2001 and the T775R2035 models when the Type option = Floating. 1. From the menu, use the and buttons to high- light DERIVATIV.
- Page 31 T775R SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER SETUP 3.3.6.4. RESET RT SETUP (run time) OUTPUTS OUTPUTS RELAY 1 RELAY 1 This selection displays only if “Show RT = YES” is RESET RT RESET RT selected during Output Options setup (Refer to “3.3.5.4. SHOW RT (show run time hours)”...
- Page 32 T775R SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER Creating a Schedule 3. Set the Schedule Options — see “4.2. OPTIONS” 4. Set Individual Schedules — begin with “4.3. Setting To create a schedule, perform the following in the order Individual Schedules” on page 33 listed: 5.
- Page 33 T775R SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER 4.2.2. SET DATE MAIN MAIN SCHEDULE SCHEDULE Setting the system date is required to enable the OPTIONS OPTIONS SET DATE SET DATE controller to follow daylight saving time. IMPORTANT To properly account for Daylight Saving time, be sure to set the Date before setting the Time.
- Page 34 T775R SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER MAIN 4.3.1. E1 SETPT MENU (setpoint for event 1) SCHEDULE SCHEDULE MON-FRI MON-FRI E1 SETPT E1 SETPT 1. From the selected time period menu, use the and SETPOINT buttons to highlight E1 SETPT. SETBACK 2.
- Page 35 T775R SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER SUMMARY MENU TROUBLESHOOTING The Summary menu provides the ability to view the Power Loss schedule (E1 and E2 times) for each relay for each day of the week. The date and time settings are retained for 24 hours after a power outage.
- Page 36 By using this Honeywell literature, you agree that Honeywell will have no liability for any damages arising out of your use or modification to, the literature. You will defend and indemnify Honeywell, its affiliates and subsidiaries, from and against any liability, cost, or damages, including attorneys’...