I. Basic Information

Model: F3325

Brand: HIMA Black Horse (Germany)

Series: HIMatrix F3 / HIMax

Type: 6-channel SIL3 safety analog output module (explosion-proof type, Ex)

Application: ESD, BMS, F&G, SIS safety instrumented system, drives explosion-proof field devices (such as F6221 transmitter)

Software: SILworX

Safety Level: SIL3 (IEC 61508), TÜV AK6, Cat.4/PL e, ATEX explosion-proof certification

Architecture: Single-module safety output, supports TMR system expansion

Status: In production

II. Hardware Parameters

Power Supply: 24VDC, -15% to +20%

Power Consumption: Approximately 15W

Output Channels: 6 analog output channels (AO)

Output Signals: 4-20mA (standard), 0-20mA (optional)

Load Capacity: Maximum 600Ω per channel

Isolation: Channel-to-channel / Ground 2kVrms, explosion-proof isolation design

Operating Temperature: -25℃ to +60℃ (explosion-proof environment -20℃ to +50℃)

Storage Temperature: -40℃ to +85℃

Protection: IP20 (module), compatible with on-site equipment Ex ia/ib

Size: 25mm × 203mm × 127mm

Weight: Approximately 0.8kg

Hot Swap: Supported

III. Interfaces and Protection

Output Terminals: 6 AO + common terminal + explosion-proof shielded ground, screw terminals

Status Indicators: LED per channel (operation / fault / explosion-proof status)

Protection Functions: Short circuit protection, overcurrent protection, overvoltage protection, explosion-proof energy-limiting protection

Communication: Backplane bus (for communication with F3311/F3313/F3318 CPU)

IV. Performance and Safety

Response Time: ≤10ms

Accuracy: ±0.1% FS (25℃), ±0.2% FS (full temperature range)

Self-Diagnosis: Channel-level diagnosis (short circuit, open circuit, overload, explosion-proof abnormality)

Fault Behavior: Single-channel fault does not affect other channels, system alarms and records, explosion-proof fault automatically limits energy

Safety Mechanism: Output circuit redundancy detection, explosion-proof isolation barrier integration, output disconnected to safe state in case of failure

V. Usage Tips (Installation / Wiring / Configuration)

Installation: Insert into the backplane slot of the F3 rack, snap lock; leave 20mm clearance above and below for heat dissipation, away from strong electricity / frequency conversion interference, explosion-proof area should comply with ATEX installation specifications.

Power Supply: 24VDC regulated power supply, positive and negative terminals; FG protective ground and explosion-proof shielded ground are reliably grounded separately to reduce EMC interference and explosion risk.

Output Wiring: 6 AO terminals connect to explosion-proof transmitters (such as F6221) positive terminals, common terminal connects to negative terminals, shield layer is grounded at one end; each channel load ≤ 600Ω, non-explosion-proof equipment must not be connected.

Configuration (SILworX): Add F3325 to the hardware; define channel signal type (4-20mA), range, fault response (hold / safe state), explosion-proof parameters; compile and download to CPU.

Maintenance: Regularly check terminal tightening, LED status, explosion-proof sealing; faults are diagnosed and located through software; support hot swap replacement without shutdown, explosion-proof area maintenance requires power-off and electrical testing.

Compatibility: Can be paired with F3311/F3313/F3318 CPU and F32xx DI module in the same rack; when replacing, update configuration, no need to modify wiring, explosion-proof certification needs to match.