General Information

Module function: I/O subrack interface and supervision module

Compatible system: HIMax H51q safety system

Compatible I/O: F7 series I/O modules only

Power Supply

Logic power: 5 VDC, 600 mA

Field power: 24 VDC, 750 mA

Monitoring & Supervision

I/O subrack 5 V power monitoring

Watchdog (WD) signal:

Transmission and supervision of watchdog signals

Watchdog-triggered shutdown on fault conditions

Status Indication

WD LED: Watchdog status indication

SEL LED: I/O access / selection status

Configuration

DIP switches S1.1–S1.4:

Set I/O bus number

Set subrack number

Supports multi-subrack expansion architectures

Maintenance & Diagnostics

Online replacement supported

WD switch allows temporary watchdog deactivation

Prevents unintended system emergency shutdown during maintenance

Online self-diagnostics

Fault signals transmitted to the central module

Environmental & Protection

Operating temperature: –20 °C to +60 °C

Protection class: IP20

Immunity: Anti-EMI and surge-resistant design

Core Features

Secure communication
Ensures reliable bus communication between the central module and the I/O subrack, with real-time watchdog supervision.

Fault safety
Abnormal I/O subrack power conditions trigger safety alarms in coordination with the system’s fault response mechanism.

Online maintenance
The watchdog can be temporarily disabled via the WD switch, allowing module replacement without forcing an emergency shutdown.

Accurate configuration
Encoded DIP switches define bus and subrack numbers, enabling precise addressing in multi-subrack expansion systems.

High compatibility
Designed exclusively for the HIMax H51q system, operating in conjunction with F7 series I/O modules.