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  1. Home
  2. Fault Codes
  3. SIMODRIVE 611U
  4. 616
616Fault · Power sectionUsually repairable

SIMODRIVE 611U 616: DC Link Undervoltage

What 616 means

The DC link voltage fell below the lower limit.

Symptoms

Trips when the line supply dips or the infeed drops out.

Is it repairable?

Yes: infeed and supply modules are repaired at component level.

Common causes

  • Line supply problem
  • Infeed or supply module fault
  • Braking resistor overloaded

Safe checks

  1. 1Check the line supply and the infeed module status
  2. 2Check the braking resistor

Drives hold dangerous voltage after power-off. Checks should only be done by qualified personnel, with power isolated and the DC link discharged.

Reviewed by AutomIQ repair technicians. Code and name from the SIMODRIVE 611 universal Function Manual.

Related SIMODRIVE 611U faults

  • 003NMI due to watchdog
  • 006Checksum test error
  • 020NMI due to cycle failure
  • 028Actual current sensing during power-up
  • 504Measuring circuit error, motor measuring system
  • 505Measuring circuit error, motor measuring system absolute track
All 186 SIMODRIVE 611U codes

Still showing 616?

SIMODRIVE 611U axis faulted?

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  • Component-level repair
  • Tested under power on our jigs
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Related services: Servo drive repair · Line module repair

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AutomIQ Automation & Drive Services

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