Applicable Systems
DR-PRO 50t
Symptoms
The crane reports a travel limit switch fault. A travel direction limit switch is not functioning.
Possible Causes
- Limit switch contacts worn or oxidized
- Switch mounting loose or bracket bent
- Switch wiring damaged or disconnected
Troubleshooting Steps
- Step 1: Test the limit switch contact operation
Contacts make and break correctly - Step 2: Verify switch mounting and bracket integrity
Switch is securely mounted - Step 3: Check switch wiring and connections
Wiring is intact
How to Reset
To reset: Repair or replace the limit switch, then clear the fault.
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Source: Demag DR Rope Hoist Manual, Demag Cranes & Components GmbH
Category: Crane
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