Yaskawa CPF21 fault code meaning
Yaskawa / CPF21
Series: 616G5
Communication option card self-diagnostic error
drive
Meaning:
Possible causes
Source: Yaskawa VS-616G5 Instruction Manual, Protection and Diagnostic Functions P276
Series: ES700, GA500, GA501, GA700
Control circuit fault
drive
Meaning:
Possible causes
Source: ES700 Technical Manual P302; GA500 Technical Manual P297; GA501 Technical Manual P261; GA700 Technical Manual P359
Series: L7
Option card self-diagnostic fault
drive
Meaning: Interference or spikes occur on the communication line or the faulty option card
Possible causes
Source: Yaskawa L7 Series Elevator Drive User Manual, Fault Diagnosis P266