Simodrive 611 Error 607

Technical Service Paper: Analysis and Rectification of Simodrive 611 Error Code 607

Subject: Power Supply Module (PSM) Fault – Mains Contactor Missing / Watchdog Timeout System: Siemens Simodrive 611 Universal / Universal HRS Date: October 26, 2023 Priority: High (Machine Down)

Step 1: Observe Symptom Patterns

• Does Error 607 occur immediately at power-on? → Likely internal drive short or mains overvoltage.
• Does it occur only during deceleration? → Braking resistor or chopper issue.
• Does it occur randomly while running? → Mains fluctuation or capacitor aging.
• Does it occur with a specific axis? → Mechanical overhauling or motor cable fault on that axis.

Step 5: Check Firmware and Parameter Backup

• Compare parameters of the affected axis to a known working axis.
• Reload the drive parameters from a backup (Siemens .ard file).
• Update or reflash firmware if corrupt.

• With the drive powered OFF and DC link discharged, measure between DC+ and the braking resistor terminal inside the module. A forward-biased diode drop (0.3-0.7V) in one polarity indicates a healthy chopper. A short (0 ohms) indicates a blown chopper IGBT.