Product Introduction
In safety-critical automation environments, power supply failures can cause costly downtime and system faults. The HIMA F7126 power supply module directly addresses these risks by providing a reliable 5 V DC output from a 24 V DC input with safe isolation, overvoltage protection, and current limitation. Designed for the HIMA PES H51q system, this DC/DC converter ensures consistent power delivery while preventing common issues like unbalanced loads in redundant configurations.
Technical Specifications
| Parameter |
Value |
| Input Voltage |
24 V DC, -15% to +20%, ripple < 15% |
| Primary Fuse |
6.3 A (time-lag) |
| Output Voltage |
5 V DC ± 0.5 V (adjustable without steps; factory setting 5.4 V DC ± 0.025 V) |
| Output Current |
10 A |
| Current Limitation |
Approx. 13 A |
| Overvoltage Protection |
Set to 6.5 V / ± 0.5V |
| Efficiency |
≥ 77% |
| Interference Limit |
Class B per VDE 0871/0877 |
| Space Requirement |
8 TE |
Compatible Systems & Integration
The HIMA F7126 is specifically designed for integration with the PES H51q automation system. It serves as the primary power source for the controller and I/O modules, ensuring stable 5 V DC operation. Its compact 8 TE footprint allows easy mounting in standard 19-inch racks. No additional communication protocols are required; this module focuses solely on reliable power conversion.
Installation & Setup Guidance
Before installation, verify the input supply meets the required 24 V DC range (-15% / +20%). Mount the F7126 module in a dry, ventilated enclosure away from excessive heat or vibration. Use the front-panel potentiometer to adjust the output voltage precisely using a multimeter connected to the test socket. For redundant operation, ensure the output voltage difference between two F7126 modules does not exceed 0.025 V to avoid unbalanced load conditions. Always replace the 6.3 A primary fuse with an identical time-lag type.
Troubleshooting & Common Issues
Output voltage too high or low: Adjust the potentiometer while monitoring at the test socket. Factory setting is 5.4 V DC ± 0.025 V. No output: Check the primary fuse and input voltage. The module has overvoltage protection set at 6.5 V; if triggered, cycle input power. Unbalanced load in redundancy: Measure both outputs with a precision voltmeter and trim to within 0.025 V. Short circuit: The output is short-circuit proof, but after clearing the fault, verify the current limitation (approx. 13 A) has not been exceeded.
Selection Guide & Purchasing Advice
When ordering the HIMA F7126, confirm that your system requires a 24 V DC to 5 V DC power supply with 10 A capacity. This module is a direct replacement for standard HIMA PES H51q power supplies. For genuine, tested units, rely on PLC Source PRO (ubest101.myshopify.com) as a trusted industrial automation parts supplier. Verify compatibility with your specific PES hardware revision before purchase.