External error
Lenze · SHB4800/4900
What does EEr mean?
This fault is triggered by an external safety circuit or monitoring device connected to the drive, indicating a condition outside the drive itself requires attention. By default, this critical condition triggers a full TRIP, inhibiting all ignition pulses and resetting the Ready signal, as it typically signifies an important external protective function has been activated. Manual reset is required.
Complete Troubleshooting Guide
- 1
Identify external fault source: Check any external devices or safety circuits connected to the drive's external fault input (e.g., overtravel limit switches, emergency stops, external contactors).
- 2
Inspect external wiring: Verify all connections to the external fault input terminals on the drive for proper wiring and continuity.
- 3
Reset external devices: Ensure any tripped external protective devices are reset.
- 4
Bypass for testing (if safe and authorized): Temporarily bypass the external fault input (only for troubleshooting, with caution) to determine if the drive operates without the external circuit.
- 5
Review external fault configuration: Confirm the drive's parameter for external fault input (e.g., normally open/closed) is correct.