Honeywell T775A/B/M 2000 Series User Manual

INSTALLATION INSTRUCTIONS
62-0254-13
T775A/B/M Series 2000
Electronic Stand-Alone
Controllers
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.
Five models have analog (modulating) outputs for
actuator and motor control, and NEMA-4 weatherproof
enclosures are available for wet environments.
IMPORT ANT
Each T775A/B/M controller 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.
Table 1. T775A/B/M Controller Configurations.
Controller
Model
a
a
All models include a digital input for use with the disable or setback option.
Description Replaces
SPDT
Relay
Outputs
Analog
(Mod)
Outputs
b
b
The modulating (analog) outputs are 4-20 mA, 0-10 Vdc, 2-10 Vdc, or Series 90 selectable.
Floating
Outputs
c
c
Each floating output eliminates two SPDT relays.
Sensor
Inputs
Nbr of
Sensors
Included Enclosure
T775A2009 Standard T775A1001 1 None None 1 1 NEMA 1
T775B2016 Standard N/A 2 None 1 2 1 NEMA 4X
T775B2024 Standard T775C1009 T775D1008 4 None 2 2 1 NEMA 4X
T775B2032 Standard T775A1019 T775B1000 2 None 1 2 1 NEMA 1
T775B2040 Standard T775A1027 T775A1035
T775B1018 T775B1026
T775B1042
4None2 21 NEMA 1
T775M2006 Modulating N/A None 2 N/A 2 1 NEMA 1
T775M2014 Modulating T775G1005 T775G1013
T775G1021 T775G1039
42 N/A
2
d
d
These models can support a high/low modulating limit at Sensor B for temperature control at Sensor A.
1 NEMA 4X
T775M2022 Modulating N/A 2 2 N/A
2
d
1 NEMA 4X
T775M2030 Modulating T775E1114 T775F1022
T775F1055 T775F1089
42 N/A
2
d
1 NEMA 1
T775M2048 Modulating T775E1015 T775E1023
T775E1056 T775E1064
T775E1098
22 N/A
2
d
1 NEMA 1

Honeywell T775A/B/M 2000 Series Specifications

General

Brand	Honeywell
Model	T775A/B/M 2000 Series
Category	Controller
Language	English

Summary

INSTALLATION INSTRUCTIONS

Product Description

Overview of the T775 electronic stand-alone controllers for commercial and agricultural use.

BEFORE INSTALLATION

INSTALLATION AND SETUP

Mounting Controller and Sensors

Instructions for mounting the controller and temperature sensors in appropriate locations.

Wiring Connections and Procedures

Details for connecting sensors, inputs, outputs, and power according to diagrams and codes.

CHECKOUT AND POWER

Verifying Installation and Applying Power

Inspect all wiring, verify compliance, and apply power to the controller.

CONTROLLER PROGRAMMING

Output Relay Configuration

Setting setpoint, differential, sensor, and heat/cool modes for each output relay.

Setpoint High Limit Configuration

Differential and Throttling Range Settings

Adjusting differential for relays or throttling range for modulating outputs for precise control.

Sensor, Heat/Cool, and Setback Configuration

SETUP AND ADVANCED OPTIONS

Entering Setup Mode and Sensor Configuration

Accessing setup and configuring sensor parameters like number, units, and calibration.

Sensor A Configuration Details

Sensor B Configuration and Limit Settings

OUTPUT CONFIGURATION

Modulating Output Setup

Configuring type, minimum output, integral, derivative, schedule, and hide options for modulating outputs.

Modulating Output Signal and Parameter Settings

Relay Setup and Output Options

RELAY CONFIGURATION

Setting Relay Type (Standard or Floating)

Floating Relay Actuator and Integral Parameters

SUMMARY MENU AND TROUBLESHOOTING

Error and Diagnostic Message Interpretation

Understanding controller error codes (EEPROM) and diagnostic messages for sensor issues.