How do I set the current limits on the ZUBR I25 Current Control Relay? (ZUBR I25 Current Control Relays Instruction Manual)

Answer

manuals.plus

Aug 05, 2025 - 03:41 AM


To set the current limits on the ZUBR I25 Current Control Relay, follow these steps as outlined in the manual:

1. Main Current Limit (I1): The factory default setting is 10A. To view and adjust the main current limit, press the "+" or "-" button. The flashing values can be changed using these buttons.

2. Minimal (I0) and Additional (I2) Current Limits: The main current limit (I1) should be set between the minimal (I0) and additional (I2) current limits. The main current limit should not be set lower than the minimal limit (I0) or higher than the additional limit (I2).

3. Function Menu Navigation: Use the middle button to navigate through the menu. Use the "+" and "-" buttons to change parameters. The parameter will flash after the first button press and change after the second press.

4. Example Scenario: To protect an electric motor, set the main current limit (I1) to the current consumed under maximum load. Adjust the switch-off delay (toF) for operating time at maximum load. Set the additional current limit (I2) for motor overload current and the response time upon exceeding the additional limit (t2) to limit the overload.

5. Reset to Factory Settings: To reset to factory settings, hold all three buttons simultaneously for more than 12 seconds until "dEF" appears on the screen. Release the buttons to reset and reboot the device.

By following these steps, you can effectively set the current limits on the ZUBR I25 Current Control Relay to suit your specific application requirements.