: Unplug the orange motor power cable from both the Siemens Simodrive 6SN11 LT-Module and the motor housing terminal box.
Manually rotate the ballscrew or axis (if safe and possible).
Markus closed the cabinet door. He powered on the 24-volt logic supply first. The LEDs blinked through their startup sequence: green, yellow, red, then—a steady green on the control board. No smoke. No pop. He took a breath and enabled the main DC bus. The massive capacitors charged with a low, healthy whine. simodrive 611 error 607
: Broken or disconnected motor supply cables, or missing phases in the power connection.
: Measure the DC bus voltage and ensure the busbar screws are tight. : Unplug the orange motor power cable from
An open or failing contactor between the LT-module (power module) and the servo motor. Ucecap U sub c e end-sub Monitoring Tripped in the Power Section The power module features an integrated Ucecap U sub c e end-sub
If you have multiple identical axes, swap the power module of the faulty axis with a known good axis. He powered on the 24-volt logic supply first
Understanding and Troubleshooting Simodrive 611 Error 607: Current Controller at Limit
Essentially, the drive is pushing as much power as it possibly can to the motor, but the motor still isn't reaching its target position or speed. This creates a "contouring error" where the actual physical movement doesn't match the command. Common Causes & Fixes
When Error 607 halts a machine tool, the fault generally originates from one of four critical failure points: 1. Physical Disconnection or Missing Phase