Error Code: 607
Designation: Mains phase failure / Missing Phase
Description: Error 607 indicates that the Simodrive 611 power supply module has detected a loss of one or more phases in the incoming mains power supply, or a significant voltage imbalance between phases. In simpler terms, the drive is not receiving the correct 3-phase power required to operate.
He walked her through the diagnosis. Using the laptop, he accessed the drive’s internal diagnostic logs via the RS-232 port. The last few milliseconds before the fault were a cascade of digital screams: DC link voltage collapse, phase current asymmetry, and finally, the fatal short-circuit detection. He probed the IGBTs with a multimeter. On the lower leg of the U-phase, gate to emitter: dead short. simodrive 611 error 607
In simple terms, the drive control logic has detected that the conditions required to safely energize the power transistors (IGBTs) have not been met. The drive refuses to output current to the motor, effectively locking the axis. Simodrive 611 Universal: Error 607 Troubleshooting Guide 1
For one agonizing second, the display showed “A083”—motor measurement system evaluation—then it cleared. The green LED glowed solid. The Simodrive 611 hummed, not the death rattle, but its old, confident song. He walked her through the diagnosis
⚠️ DANGER: Before touching anything related to the Simodrive 611, shut down the main power and wait at least 30 minutes! The DC link capacitors can hold lethal voltages (over 600V DC) long after the machine has been turned off. Always verify that the DC bus is at 0V with a properly rated multimeter before starting work. 1. Inspect the Motor and Cables
The AC supply feeding the drive module may be unstable.
Missing Phase or Disconnected Motor: A broken wire in the motor power cable, a loose connection at a terminal block, or a plug that has rattled loose.