Siemens G120C Error F01662: Error internal communications

Siemens G120C drive · taken from the manufacturer’s manual, pages cited

Fault codeF01662

An internal communication error occurred within a module on the Siemens G120C, requiring a power cycle to resolve. The manual's first action is: “- carry out a POWER ON (switch-off/switch-on).”

Model
Siemens G120C
Display shows
Error internal communications (F01662)
Type
Fault code
Source
Manual p. 686

What F01662 means

Error internal communications p. 686

Common causes

  • A module-internal communication error has occurred. p. 686
  • Fault value (r0949, interpret hexadecimal): p. 686

What to do

  1. - carry out a POWER ON (switch-off/switch-on). p. 686
  2. - check the electrical cabinet design and cable routing for EMC compliance. p. 686
  3. - check whether an impermissible voltage is connected at one of the digital outputs. p. 686
  4. - check whether a digital output is loaded with an impermissible current. p. 686
  5. - upgrade firmware to later version. p. 686
  6. - contact Technical Support. p. 686

Before you service the product, read the safety instructions in the manual p. 4.

If F01662 is still not resolved

  • contact service / dealer p. 4
    “Warning concept This Manual contains information which you must observe to ensure your own personal safety as well as to avoid material damage.”
  • contact service / dealer p. 12
    “WARNING Danger to life if the safety instructions and residual risks are not observed”
Open the manual at page 686 All G120C error codes Manual details & download

This page summarises what the manufacturer’s manual says about F01662; each statement links to the page it comes from, and quoted lines are copied word for word. It is not a substitute for the manual or for a qualified installer. ManualLib is not affiliated with Siemens. Found a mistake? Report an error.