- The HIMA F6705 is a rack-mounted, galvanically isolated DC/DC safety power supply module designed for the central rack of HIMA H41q / H51q safety-related control systems (PES). It converts a 24 V DC primary supply into a tightly regulated 5 V DC system voltage that powers the central processing units, communication modules, and I/O logic circuits inside the safety instrumented system (SIS) rack.
🔷Key Specifications
|
Specification
|
Detail
|
|---|---|
|
Brand
|
HIMA
|
|
Model
|
F6705
|
|
Module Type
|
Isolated DC/DC Safety Power Supply Module
|
|
Compatible System
|
HIMA PES H41q / H51q Safety Control Systems
|
|
Input Voltage
|
24 V DC (range –15 % to +20 %)
|
|
Output Voltage
|
5 V DC, stepless adjustable; factory preset 5.4 V DC ±0.025 V
|
|
Rated Output Current
|
10 A continuous
|
|
Current Limiting
|
Approx. 13 A
|
|
Overvoltage Protection
|
6.5 V DC ±0.5 V
|
|
Isolation
|
Galvanic isolation between 24 V input and 5 V output
|
|
Conversion Efficiency
|
≥ 77 %
|
|
Front Panel
|
Test socket + voltage trim potentiometer
|
|
Redundancy
|
Supports parallel redundant operation (voltage balance ≤ 0.025 V between modules)
|
|
Rack Width
|
8 TE (standard F-series plug-in format)
|
|
Operating Temp.
|
–20 °C to +60 °C
|
|
Storage Temp.
|
–40 °C to +85 °C
|
|
Humidity
|
5 %–95 % RH, non-condensing
|
|
Protection
|
Overvoltage, overcurrent, short-circuit proof
|
|
Safety Integrity
|
SIL 3 capable (IEC 61508 / IEC 61511 context)
|
|
EMC Compliance
|
VDE 0871 / 0877 Class B
|
|
Country of Origin
|
Germany
|
🔨Product Overview
The HIMA F6705 is the dedicated 24 VDC-to-5 VDC converter module for HIMA safety racks. Unlike a commercial off-the-shelf power supply, it is qualified for use in safety-related automation architectures where deterministic fault behavior, electrical isolation, and redundant availability are mandatory.
Installed in the central rack backplane, the F6705:
- Supplies regulated 5 V DC to H41q/H51q central modules and I/O carriers
- Electrically isolates field-side 24 V DC from sensitive 5 V logic circuits
- Detects overvoltage, overload, and short-circuit conditions
- Supports load-sharing redundancy with other F6705 modules
Because the module is part of the safety power architecture, a single F6705 failure in a redundant setup does not disable the safety function. The remaining module continues to carry the 5 V backplane load while the fault is reported to the controller.
There are no reviews yet.