GE IC660BBA103 Thermocouple Block | 6 Inputs, 16-Bit, 1.1kg

Core Function of This Thermocouple Input Block

The GE IC660BBA103 directly measures temperature from industrial thermocouple sensors. This input block accepts up to six independent thermocouple channels. It converts each millivolt signal into a digital temperature value. Consequently, the module provides accurate thermal data to the Genius bus controller.

Physical Dimensions and Enclosure Design

This thermocouple input block measures 225 mm in total height. Its width reaches 128 mm for a standard Genius block form factor. The unit depth stands at 80 mm including the terminal covers. You will find a NEMA-rated epoxy-encapsulated housing for harsh environments. The GE IC660BBA103 weighs approximately 1.1 kilograms for industrial durability.

Input Channels and Thermocouple Types

The GE IC660BBA103 accepts J, K, T, E, R, and S type thermocouples. Each channel provides a dedicated differential amplifier for noise rejection. The block includes automatic cold junction compensation for accurate readings. A built-in isothermal terminal block maintains stable reference temperature. The module samples all six channels every 100 milliseconds.

Signal Conditioning and Accuracy Specifications

This input block achieves 16-bit resolution on every thermocouple channel. Each channel provides an input impedance greater than 10 megohms. The block includes low-pass filtering to remove 50/60 Hz interference. Common mode rejection reaches 120 dB for industrial noise environments. Total measurement accuracy stays within ±0.1% of full scale at 25°C.

Genius Bus Interface and Communication

The GE IC660BBA103 connects directly to the Genius I/O bus network. A single 5-pin screw terminal block accepts the bus cable connections. The block operates as a bus node with a unique address setting. Fifteen rotary switches on the side set the device address. The module reports all temperature data to the bus controller cyclically.

Status Indicators and Diagnostic Features

This thermocouple input block provides seven LED status indicators. A green power LED illuminates when the block receives 24 V DC. A red fault LED signals internal hardware or configuration errors. Five yellow channel LEDs indicate open thermocouple detection per input. The block performs automatic self-diagnostics at power-up. It also reports broken sensor conditions to the bus controller.

Energy Storage and Power Requirements

The GE IC660BBA103 draws 250 mA from a 24 V DC power supply. An internal DC-DC converter generates all necessary analog voltages. The block incorporates four 100 µF electrolytic capacitors for input filtering. Total stored energy reaches approximately 0.14 joules at nominal voltage. The module dissipates 6 W of heat during normal operation.

Parameter	Specification
Model	IC660BBA103
Brand	GE (General Electric)
Category	Thermocouple Input Block
Height x Width x Depth	225 x 128 x 80 mm
Weight	1.1 kg
Enclosure type	Epoxy-encapsulated, NEMA-rated
Thermocouple inputs	6 channels
Supported types	J, K, T, E, R, S
Resolution	16-bit
Input impedance	>10 megohms
CMRR	120 dB at 50/60 Hz
Accuracy	±0.1% of full scale at 25°C
Cold junction compensation	Automatic, built-in
Sampling rate	100 ms for all 6 channels
Genius bus connector	5-pin screw terminal
Address setting	15-position rotary switch
Status LEDs	7 (power, fault, 5 channel)
Open thermocouple detection	Yes (per channel)
Self-diagnostics	Yes (power-up)
Logic supply	250 mA at 24 V DC
Filter capacitors	4 x 100 µF
Total stored energy	0.14 Joules
Power dissipation	6 W
Operating temperature	-20°C to +60°C

Installation and Configuration Notes

You must mount this block on a DIN rail inside a control cabinet. Always connect the Genius bus shield at only one end of the network. Then, set the device address before applying power to the block. The module requires configuration through the Genius bus controller software. Regular verification of cold junction temperature ensures specified measurement accuracy.