Overview
Electrical Characteristics
The module maintains an internal voltage drop of no more than 2 V at full 500 mA load per channel. Undervoltage tripping activates at ≤ 16 V, thereby protecting downstream devices from unstable supply conditions. Output leakage current remains below 350 µA, while the residual output voltage at a reset state stays under 1.5 V. Admissible total line resistance for supply and return lines is limited to 11 Ohm maximum.
Operating Data and Physical Specifications
| Parameter | Specification |
|---|---|
| Model | Z7138 |
| Brand | HIMA |
| Spare Model | Z 7138 |
| Product Parameters | DIGITAL OUTPUT MODULE |
| Outputs | 500 mA per channel |
| Internal voltage drop | max. 2 V at 500 mA load |
| Admissible line resistance (in + out) | max. 11 Ohm |
| Undervoltage tripping | at ≤ 16 V |
| Short circuit current | 0.75 … 1.5 A |
| Output leakage current | max. 350 µA |
| Output voltage if output is reset | max. 1.5 V |
| Duration of the test signal | max. 200 µs |
| Space requirement | 4 TE |
| Operating data | 5 V DC: 110 mA; 24 V DC: 180 mA in add. load |
| Weight | 0.08 kg |
| Estimated Shipping Size | 2 x 6 x 10.4 cm |
| Tariff Code | 8537101190 |
| Country of origin | GERMANY |
Application Notes
Each output channel supports individual diagnostics through the test signal mechanism. Meanwhile, the short-circuit current window of 0.75 to 1.5 A allows the module to isolate faults quickly without requiring external fuses for most applications. For example, when wiring long cable runs, the 11 Ohm line resistance limit should be verified to ensure proper voltage delivery at the load terminals. Therefore, installers must account for both conductor cross-section and contact resistance at terminals.
Frequently Asked Questions
Q: What is the maximum load current per channel on the HIMA Z7138?
A: Each channel supplies up to 500 mA. The short-circuit protection engages between 0.75 A and 1.5 A to limit fault current.
Q: Can the Z7138 detect open or broken wires during operation?
A: Yes. The module issues a test pulse of up to 200 µs duration, which allows the system to verify line integrity without interrupting the output state.
Reviews
There are no reviews yet.