I. Basic Information

Model: F3331

Brand: HIMA (Germany)

Series: HIMatrix F3 / HIMax

Type: 8-channel SIL3 safety digital output (DO)

Safety Level: SIL3 (IEC 61508), TÜV AK6, Cat.4/PL e

Software: SILworX

Applications: ESD/BMS/F&G/SIS, drives solenoid valves, relays, indicator lights

II. Hardware Parameters

Power Supply: 24VDC (L+), 5VDC (backplane)

Power Consumption: 5V @ 130mA; 24V @ 180mA (excluding load)

Channels: 8 DO (open collector output)

Output: 24VDC, per channel 500mA (12W); indicator ≤ 4W

Load: Resistive / Inductive (≤ 12W)

Isolation: Channel-to-channel / Ground safety isolation

Operating Temperature: -25℃ to +70℃

Size: 4TE (25mm × 203mm × 127mm)

Weight: Approximately 1.0kg

Hot Swap: Supported

III. Interfaces and Protection

Terminal: 8 × DO+, common terminal L-, ground (screw terminal)

Indicator: Per channel LED (operation / fault)

Protection: Short circuit / Overcurrent / Overvoltage / Reverse polarity, fail-safe shutdown

Communication: Backplane bus (connected to F3311/F3313/F3318 CPU)

Features: Line monitoring (open circuit / short circuit), output circuit test

IV. Performance and Safety

Response Time: ≤ 200μs (test signal)

Self-Diagnosis: Channel level (short circuit / open circuit / overload / undervoltage)

Fault Behavior: Single channel fault does not affect other channels, system alarm

Safety Mechanism: Output circuit test, safety isolation, fail-safe shutdown

V. Differences from F3330 (brief)

F3330: Output is sourcing type (sourcing), internal voltage drop is smaller

F3331: Output is open-collector (open-collector), external requires common power supply

Terminal definitions, internal protection circuit details are slightly different, configuration is universal