mplifier
Overheat
Possible • Overheat was detected in Amplifier.
• Overheat was detected in regenerative
resistor of Amplifier.
Alarm code 0,1 indicates: when Func2/ bit7,6 =”0,0”, “0”= output open and “1”= output short.
Operating state when alarm occurred
POSSIBLE CAUSES
OPERATING STATE
1 2 3 4 5
When control power supply is turned on
△
○ △
During operation
△ ○ ○ ○
After emergency stoppage
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Corrective Measures
CAUSES CORRECTIVE MEASURES
1 Faulty internal circuit of Servo Amplifier Replace amplifier.
2 Regenerative power is too large • Review operational conditions
• Use external regenerative resistor
3 Although regenerative power is within
specification, ambient temperature of Servo
Amplifier is too high.
Review cooling method so that temperature in
control board not become over 131°F (55℃).
4 Although regenerative power is within
specification, cooling fun in Servo Amplifier
stops.
• Check if cooling fan in amplifier is rotating. Replace
amplifier if fan is not operating.
5 Regenerative power when emergency
stoppage was too large.
• Replace Amplifier
• Review load condition
After overheat was detected, thermal SW in regenerative resistor will not recover to normal
operation without cooling down period for a while.
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