Triconex 3351S2 Analog Input Module Trusted supplier

Frequently Asked Questions (FAQ)

What type of signals does the 3351S2 module accept?
The module accepts 4–20 mA analog current signals on all 32 input channels.

Is manual calibration required for the 3351S2?
No. The module is factory-calibrated and guaranteed to remain in calibration for the life of the product.

Can the 3351S2 operate with a hot-spare module?
Yes. It fully supports a hot-spare configuration, allowing automatic failover in the event of a module fault.

What diagnostic features are included in the 3351S2?
It includes built-in self-test circuitry that detects stuck-at and accuracy faults typically in less than 500 milliseconds.

How does the Trident system handle input signal discrepancies in TMR mode?
The system uses a mid-value voting algorithm across the three channels to ensure reliability and safety.

What is the input bus type used by the 3351S2?
It uses a triplicated RS-485 I/O bus operating at 2 Mbps with HDLC protocol for data integrity.

Does the module have any visual fault indicators?
Yes. The front panel includes LED indicators for PASS, FAULT, ACTIVE, and FIELD POWER conditions.

What is the operating temperature range for the 3351S2?
The standard operating range is 0°C to 60°C, with extended support from -20°C to +70°C.