Nord Drivesystems SK 180E Series, User Manual

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NORDAC BASE (SK 180E / SK 190E) – Users Manual for Frequency Inverters
170 BU 0180 en-4118
Motor speed does not
correspond to setpoint
• Analogue input function set to
"Frequency addition" and another
setpoint is present
• Check P400
• P420 , check active fixed
frequencies
• Check bus setpoints
• Check P104 / P105 "min. /
max. frequency"
• P113 Check "jog frequency"
Intermittent communication
error between FI and option
modules
• System bus terminating resistor not set
• Poor connection contacting
• Interference on system bus line
• Maximum system bus length exceeded
• First and last subscriber only:
Set DIP switches for
terminating resistance
• Check connections
• Connect GND of all FI
connected to system bus
• Pay attention to routing
regulations (separate routing
of signal and control cables
and mains and motor cables)
• Check cable lengths (system
bus)
Table 12: FAQ operational problems