I. Basic Information

Model: H7018

Brand: HIMA (Germany)

Type: System Expansion Backplane (I/O Rack)

Compatible System: H41q/H51q (HIQuad X) Safety Control System

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

Certifications: CE, UL, TÜV

Installation: 19-inch standard rack, vertical installation

Environment: IP20; Operating Temperature 0℃~+60℃, Storage - 40℃~+85℃

Weight: Approximately 3.5kg

II. Core Parameters

Number of slots: 8 I/O module slots (no support for CPU module)

Compatible modules: H41q/H51q full series I/O (such as H7011, H7015A, H4137)

System bus: Dual redundant SafeEthernet, rate 100Mbps

Power supply: 24VDC (±15%), powered by the system backplane, maximum current 4A

Expansion distance: Maximum 100m (fiber optic)/10m (network cable)

Redundancy support: Dual bus redundancy, dual power supply redundancy, no single point failure

Diagnosis: Real-time self-check of backplane voltage, temperature, and communication status, LED alarm

III. Interfaces and Terminals (Simplified) Table

Interface / Terminal Function

PWR1/PWR2 24VDC redundant power input

ETH1/ETH2 Dual redundant system bus (RJ45)

SLOT1~SLOT8 I/O module slots (compatible with 32mm wide modules)

GND System ground / Shield ground

VII. Safety Features

Fault Safety: In case of backplane failure / power loss, all I/O are forced to a safe state (in compliance with ESD power loss safety).

Redundant Architecture: Dual power supply, dual bus redundancy, switching time ≤ 500ms, online replacement without downtime.

Electrical Isolation: Isolation between system side and field side, isolation withstand voltage ≥ 1500VAC, anti EMI interference.

Self-Diagnosis: Real-time detection of overvoltage / undervoltage / overtemperature / communication failure, LED indication and system reporting.

VIII. Installation and Wiring

Installation: Vertical installation of the rack, with an upper and lower spacing of ≥ 20mm for heat dissipation; away from strong electromagnetic interference, corrosive / dusty environment.

Wiring: Power operation, power cable ≥ 1.5mm²; industrial shielded network cable for bus use, double-ended grounding of the shield layer.

Module Installation: Any I/O module can be installed in slots 1~8, supports hot plugging, automatically recognized and configured after insertion.

IX. Debugging and Maintenance

Power-on Test: Power LED (PWR1/PWR2) always on; bus LED (ETH1/ETH2) normal flashing; no alarm LED.

System Configuration: Identify the expansion backplane through SILworX software, configure I/O module addresses and parameters.

Daily Maintenance: Check wiring tightness, no corrosion every 6 months; dry air blowing for dust removal; backup system configuration.

Fault Troubleshooting:

Power Alarm: Check 24VDC input, redundant power module → Replace power;

Communication Interruption: Check network cable, bus configuration, redundant switching → Replace backplane or network cable;

Module Not Recognized: Check slot contact, module model compatibility → Reinsert or replace module.

X. Typical Applications

Petroleum / Chemical: I/O expansion for ESD emergency stop system, signal expansion for BMS burner management system;

Oil and Gas / Power: Expansion for safety control on offshore platforms, I/O rack for gas turbine / boiler protection;

Compatible Systems: H41q/H51q (HIQuad X) series SIS, compatible with H7011 (DO), H7015A (terminal), H4137 (DI).