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 HORNER MODULES FOR GE FANUC PLCs - THERMOCOUPLE
The thermocouple input modules allow thermocouple temperature sensors to be directly connected to the PLC without the need for external signal processors like transducers or transmitters. All analog and digital processing of the thermocouple signals are performed on the module.
The THM409 and 449 (four channels), THM809 and 889 (eight channels), and the THM166 (sixteen channels) have a resolution of 0.5°C or °F and report temperature values to the PLC %AI I/O table in 0.5°C or °F increments.
These models feature open circuit detection, where the temperature value written to the %AI register goes to its maximum value upon an open circuit condition. The THM449, THM889, and THM166 also feature %I alarm bits which energize on the same open circuit condition.
The THM166 offers superior channel density with 16 input channels per module. Field wiring is connected to a special high density, 32 postion removable terminal block. These modules provide an excellent cost per channel, with a minimum amount of resolution and circuit protection.
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THM409 |
THM449 |
THM809 |
THM889 |
THM166 |
| Number of Channels |
4 |
8 |
16 |
| Types Supported |
J, K, N, T,E, R, S |
| Resolution |
0.5°C or °F |
| Accuracy |
+/- 0.5°C typical (Type J, K, N, T) |
| I/O Points Required |
4 %AI |
4 %AI, 16%I |
8 %AI |
8 %AI, 16%I |
16%AI, 16%I |
| Open Circuit Detection |
Yes |
| Open Circuit Alarm |
No |
Yes |
No |
Yes |
| Setpoint Alarm |
No |
| A/D Conversion Type |
Integrating |
| Update Time |
40 channels per second conversion time |
| Isolation |
No |
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