GE HE693THM409 Thermocouple I/O Modules
Programmable ControllersThe Thermocouple Input Modules allow thermocouple temperature sensors to be directly
connected to the PLC with external signal processing (transducers, transmitters, etc.).
The module performs all analog and digital processing of the thermocouple signal. The
enhanced thermocouple input modules add isolation or high-resolution. On these modules,
each channel can be configured for a specific type of sensor wire. An autodetect external
AD592 cold junction compensation feature is also available.
Thermocouple I/O Modules
HE693THM166 HE693THM409 HE693THM449
Product Name
Analog I/O Thermocouple
Input Module
Analog I/O Thermocouple
Input Module
Analog I/O Thermocouple
Input Module
Lifecycle Status Active Active Active
Module Type Thermocouple Input Thermocouple Input Thermocouple Input
Backplane Support No Backplane Restrictions No Backplane Restrictions No Backplane Restrictions
Number of Slots Module
Occupies on Backplane 1 1 1
Range J, K, N, T, E, R, S, B, C, X J, K, N, T, E, R, S, J, K, N, T, E, R, S,
Diagnostics
Yes No Yes
Number of Channels 16 4 4
Channel-to-Channel
Isolation
N/A N/A N/A
Common Mode Rejection
N/A N/A N/A
Channel to Channel
Crosstalk
N/A N/A N/A
Notch Filter N/A N/A N/A
Resolution
0.5°C or 0.5°F 0.5°C or 0.5°F 0.5°C or 0.5°F
Accuracy
±0.5°C, typical (J, K, N, T) ±0.5°C, typical (J, K, N, T) ±0.5°C, typical (J, K, N, T)
Update Rate
N/A N/A N/A
I/O Required 16% AI, 16% I 4% AI 4% AI, 16% I
A/D Conversion Type Integrating Integrating Integrating
A/D Conversion Time
40 Channels/second 40 Channels/second 40 Channels/second
Connector Type Terminal Block (20 screws), included with module. Terminal Block (20 screws), included with module. Terminal Block (20 screws), included with module.
Internal Power Used 80 mA @ 5 VDC; 30 mA @ 24 VDC Relay 80 mA @ 5 VDC; 60 mA @ 24 VDC Relay 80 mA @ 5 VDC; 60 mA @ 24 VDC Relay

PACSystems RX3i Programmable Controllers
The Thermocouple Input Modules allow thermocouple temperature sensors to be directly
connected to the PLC with external signal processing (transducers, transmitters, etc.).
The module performs all analog and digital processing of the thermocouple signal. The
enhanced thermocouple input modules add isolation or high-resolution. On these modules,
each channel can be configured for a specific type of sensor wire. An autodetect external
AD592 cold junction compensation feature is also available.
Thermocouple I/O Modules
HE693THM809 HE693THM884 HE693THM888 HE693THM889
Product Name
Analog I/O Thermocouple
Input Module
Analog I/O Thermocouple
Input Module (Enhanced)
Analog I/O Thermocouple
Input Module (Enhanced)
Analog I/O Thermocouple
Input Module
Lifecycle Status Active Active Active Active
Module Type Thermocouple Input Thermocouple Input Thermocouple Input Thermocouple Input
Backplane Support No Backplane Restrictions No Backplane Restrictions No Backplane Restrictions No Backplane Restrictions
Number of Slots Module
Occupies on Backplane 1 1 1 1
Range J, K, N, T, E, R, S J, K, N, T, E, R, S, B, C J, K, N, T, E, R, S, B, C J, K, N, T, E, R, S
Diagnostics
No Yes Yes Yes
Number of Channels 8 8 8 8
Channel-to-Channel
Isolation
N/A N/A N/A N/A
Common Mode Rejection
N/A N/A N/A N/A
Channel to Channel
Crosstalk
N/A N/A N/A N/A
Notch Filter N/A None 60 Hz N/A
Resolution
0.5°C or 0.5°F N/A N/A 0.5°C or 0.5°F
Accuracy
±0.5°C, typical (J,K,N,T) N/A N/A ±0.5°C, typical (J,K,N,T)
Update Rate
N/A N/A N/A N/A
I/O Required 8% AI 8% AI, 8% AQ, 16% I 8% AI, 8% AQ, 16% I 8% AI, 16% I
A/D Conversion Type Integrating Integrating Integrating Integrating
A/D Conversion Time
40 Channels/second N/A N/A 40 Channels/second
Connector Type Terminal Block (20 screws),
included with module.
Terminal Block (20 screws),
included with module.
Terminal Block (20 screws),
included with module.
Terminal Block (20 screws),
included with module.
Internal Power Used 80 mA @ 5 VDC;
60 mA @ 24 VDC Relay
100 mA @ 5 VDC;
60 mA @ 24 VDC Relay
100 mA @ 5 VDC;
60 mA @ 24 VDC Relay
80 mA @ 5 VDC;
60 mA @ 24 VDC Relay