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HIMA 32100 Relay Module

The HIMA 32100, also cataloged as the 32100 Relay Module, operates as a dedicated hardware component for signal amplification and relay switching within safety-instrumented systems (SIS).

Hardware Specifications

Parameter Specification
Model 32100
Brand HIMA
Origin Germany
Module Type Relay Module (Dual-Channel Amplifier)
Supply Voltage 24 VDC nominal
Switching Voltage 24 VDC / 24 V=
Relay Output Capacity Up to 6 A at 250 VAC
Channels 2 independent relay channels
Signal Configuration 1-signal with pre-logic
Isolation Galvanic isolation
Response Time < 10 ms
Operating Temp -20 to +60 deg C
Power Consumption 6 W typical
Dimensions Standard terminal housing footprint
Weight 3.0 kg (Shipping Weight)

SIL3 Certification and Fail-Safe State Execution

The 32100 dual-channel relay amplifier module conforms to rigorous functional safety requirements to sustain SIL3 certification conditions depending on system architecture. The physical assembly incorporates absolute galvanic isolation to separate the low-voltage logic signal inputs from the heavy-current relay contacts. Operating primarily via the de-energize-to-trip protocol, any loss of the nominal 24 VDC supply voltage or pre-logic input signal triggers a fast fail-safe state execution, causing the output contacts to drop open in less than 10 ms to isolate the associated field-level final control elements.

Frequently Asked Questions

Q: What action does the 32100 module perform if a logic processing fault occurs in the pre-logic stage?

A: Any fault detected in the internal logic or input stage overrides the command latch, resulting in an immediate fail-safe state execution where both independent relay output channels are forced into their de-energized open state.

Q: Is online hot-swapping supported for the 32100 relay module on a standard DIN rail?

A: No. Field connections must be completely de-energized and isolated before attempting physical module removal or replacement on the DIN rail to avoid voltage transients and contact arcing.

Q: What is the recommended technical inspection schedule for the internal mechanical contacts of the 32100?

A: To verify safety loop availability, the mechanical relay contacts require systematic physical testing and contact resistance inspection every 12 to 18 months.

Field Installation Guidelines

  • DIN-Rail Assembly Stability: Snap the terminal base firmly onto a standard top-hat DIN rail. Verify that the mechanical locking mechanism is completely engaged to prevent module slippage under environmental vibration.
  • Signal Line Grounding Constraints: Install all discrete loop control lines using independent shielded runs. Connect the screens exclusively to the central low-impedance safety instrumented ground plane to isolate the logic from parasitic currents.
  • Inductive Load Suppression: When driving inductive field devices such as heavy-duty solenoids or valve coils, wire external surge suppression networks in parallel with the load to mitigate high inductive flyback voltages.
  • Conductor Sizing and Torquing: Terminate field connections with correctly sized wire gauges. Ensure screw terminals are tightened to specified torque boundaries to prevent high-resistance contact points.

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