Description
Core Product Summary (Brand / Model / Key Attributes)
The HIMA F 7133 is a 4-fold power distribution module designed for classic HIMA planar safety systems. It distributes 24 V power to I/O modules and field sensors through four individually fused channels, each equipped with fuse monitoring and LED status indication.
The module also provides L– distribution and a common relay contact that indicates the overall health of all four fuses. It occupies 4 TE of rack space.
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Product type | 4-fold power distribution module with fuse monitoring |
| Number of channels | 4 |
| Fuse rating | Max. 4 A slow-blow (miniature fuses) |
| Fuse monitoring | Individual LED per channel + evaluation logic |
| Common status contact | Relay contact (closed when all fuses OK) |
| Relay switching time | Approx. 100 ms |
| Relay contact rating | 30 V / 4 A (continuous) |
| Residual voltage (fuse tripped) | 0 V |
| Residual current (fuse tripped) | 0 mA |
| Residual voltage (supply missing) | Max. 3 V |
| Residual current (supply missing) | < 1 mA |
| Space requirement | 4 TE |
| Operating current | 24 V DC: 60 mA |
Detailed Product Overview
The F 7133 provides protected 24 V power distribution for up to four I/O slots or groups of field devices in a HIMA planar system. Each of the four channels is protected by a miniature fuse (maximum 4 A slow-blow). An evaluation circuit continuously monitors the state of each fuse and drives a dedicated LED on the front panel.
- LED permanently on → fuse OK and supply present
- LED flashing → fuse faulty or missing
- LED off → no supply voltage on that path
A common relay contact (terminals d22/z24) remains closed only when all four fuses are healthy. If any fuse is missing or has blown, the relay de-energises, providing a system-wide fault indication that can be wired into the safety logic or an alarm circuit.
Front-side terminals (pins 1–4 and L–) are used to connect the incoming L+ (or EL+) and L– supplies that feed the I/O modules and sensor contacts. Rear-side terminals (d6, d10, d14, d18) distribute the fused 24 V to the individual I/O slots.
The module is designed so that a tripped fuse results in true zero residual voltage and current on the affected channel. In the event of a complete loss of supply, residual voltage remains below 3 V and residual current below 1 mA.
System Compatibility & Integration Requirements
| Item / Dependency | Verified Compatibility or Requirement | Practical Note |
|---|---|---|
| Host system | HIMA planar / H51q-type racks | Standard 4 TE slot |
| Fuse type | Miniature, max. 4 A slow-blow | Must be fitted for correct LED indication |
| Status signalling | Common relay contact (d22/z24) | Closed = all fuses OK |
| Power supply | 24 V DC | Module consumes 60 mA |
| Field / I/O supply | Via front terminals 1–4 + L– | Rear terminals feed individual slots |
Dimensions, Mounting & Connection Notes
The F 7133 is a plug-in module requiring 4 TE. Incoming 24 V (L+/EL+ and L–) is connected on the front; fused outputs are available both on the front and via rear backplane terminals for the I/O slots. Ensure that the correct slow-blow fuses are installed and that the common relay contact is wired if system-level fuse monitoring is required. Refer to the official HIMA datasheet for the exact terminal layout and LED behaviour table.
F7133
F7133
Engineering Selection Highlights
- Four independently fused 24 V distribution channels in a single 4 TE module.
- Individual LED indication and electronic monitoring of each fuse.
- Common relay contact for collective fuse-status signalling.
- True zero residual voltage/current when a fuse has tripped.
- Dedicated L– distribution terminals.
- Rear-side connections for direct supply of individual I/O slots.
- Low power consumption (60 mA at 24 V).
FAQ
What is the HIMA F 7133?
It is a 4-channel power distribution module with individual fuse monitoring and LED indication for HIMA planar systems.
What fuse rating is used?
Maximum 4 A slow-blow miniature fuses.
How is fuse status indicated?
Each channel has its own LED (on = OK, flashing = faulty/missing, off = no supply). A common relay contact is also provided.
What happens when a fuse blows?
The affected channel drops to 0 V / 0 mA residual, the corresponding LED flashes, and the common relay contact opens.
How much rack space does it require?
4 TE.
What is the power consumption of the module itself?
60 mA at 24 V DC.
Verification & Troubleshooting Notes
Verify that the correct 4 A slow-blow fuses are installed in all four positions. Check that the front-panel LEDs correctly reflect the state of each fuse and the presence of supply voltage.
Confirm that the common relay contact operates as expected (closed only when all fuses are healthy). If an LED remains off or flashes unexpectedly, inspect the corresponding fuse, the incoming supply, and the wiring to that channel. Refer to the official HIMA F 7133 datasheet for the complete connection diagram and LED status table.
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