Siemens 6ES7231-5QD50-0XB0 SB 1231 TC, 4x TC inputs
Siemens 6ES7231-5QD50-0XB0, SIMATIC S7-1200 G2 SB 1231 TC signal board, 4 thermocouple inputs type J or K, active current production.
Specifications
| Parameter | Value |
|---|---|
| Group code | R132 |
| Product group | 4508 |
| Product class | A: Standard product which is a stock item could be returned within the returns guidelines/period. |
| Series | SB 1231 AI 4xTC thermocouple signal board |
| Export control regulations | AL : N / ECCN : EAR99H |
| Compliance with the substance restrictions according to RoHS directive | Since: 01-05-25 |
Product details
Frequently asked questions
What are the internal classification codes?
Group Code R132, Product Group 4508, Product Class A (standard stock item, returnable).
The Siemens 6ES7231-5QD50-0XB0 is a signal board for the S7-1200 G2 CPU family, adding 4 thermocouple inputs directly on the CPU's front slot. It accepts type J or K thermocouples and includes onboard cold-junction compensation, so no external reference junction or isothermal block is needed. Thermocouple signal levels are in the millivolt range – keep TC wire routed away from VFD and high-current power wiring. The board's cold-junction compensation is reliable with a clean signal path; noise on the TC pair will show up as temperature drift that looks like a field issue.
Occupies one signal board slot on the S7-1200 G2 CPU, directly plugging into the front connector. No additional DIN-rail space required – the board mounts flush with the CPU face. Packaged singly (82 x 34 x 79 mm). Panel builders: account for the board's terminal height when closing the cabinet door – typical SB clearance matches the CPU's own depth, but verify against field wiring duct placement.