Sanyo Denki Py 2 Manual
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8. MAINTENANCE 8 - 5 Alarm Status Segment LED Display Alarm Code ALM8,4,2,1 AbbreviationAlarm NameAlarm Clear Contents 0011 AOH Amplifier OverheatPossible• 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 ○ 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.
8. MAINTENANCE
8 - 6
Alarm Status
Segment LED
Display Alarm Code
ALM8,4,2,1 AbbreviationAlarm
NameAlarm
Clear Contents
0101 OV Over
voltage Possible DC voltage of main circuit of amplifier
exceeded allowable voltage
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 6
When control power supply is turned on ○
When main circuit power supply is turned on ○ ○
When motor is started or stopped △ ○ ○ ○ ○
Corrective Measures
CAUSES CORRECTIVE MEASURES
1 Faulty amplifier control board Replace servo amplifier.
2 Power voltage of main circuit is exceeding
allowable voltage Reduce voltage to within allowable range.
3 Load inertia is too high Reduce load inertia to within allowable range.
4 Subject to not connecting regenerative resistor:
• Operational pattern requires regenerative
resistor. • Review operational pattern and load inertia, change
to operational pattern not requiring regenerative
resistor.
• Install external regenerative resistor
5 Subject to using built-in regenerative resistor:
• Faulty wiring of connector CND, or
• Regenerative circuit is faulty • Wiring built-in regenerative resistor correctly:
[15A/30A] Connect built-in regenerative resistor
wires to P and Y terminals of connector
CND.
[50A] Short circuit between P- X terminals of
connector CND.
Replace Servo Amplifier if malfunction persists.
6 Subject to using external regenerative
resistor:
• Regenerative resistor is not connected
• Regenerative resistor is broken
• Regenerative circuit is faulty Turn power OFF, check wiring and resistance value
of regenerative resistor.
Replace amplifier if malfunction persists.
8. MAINTENANCE 8 - 7 Alarm Status Segment LED Display Alarm Code ALM8,4,2,1 AbbreviationAlarm NameAlarm Clear Contents 0110 OS Over speed Possible Rotating speed of servomotor exceeded allowable speed (1.2 times maximum rotating speed) during operation. 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 ○ △ Upon command input after Servo ON △ ○ ○ When motor is started ○ ○ During operation (except when motor is started) ○ ○ Corrective Measures CAUSES CORRECTIVE MEASURES 1 Faulty amplifier control board Replace servo amplifier. 2 Faulty servomotor sensor Replace servomotor 3 Overshoot is too large during motor start. Use the analog monitor of the remote controller to check the velocity. → If over shoot is too large, adjust the servo parameter → Change the acceleration/deceleration speed pattern command → Reducing the load inertia. 4 Incorrect wiring of U, V, W phases between amplifier and motor Check and correct wiring.
8. MAINTENANCE 8 - 8 Alarm Status Segment LED Display Alarm Code ALM8,4,2,1 AbbreviationAlarm NameAlarm Clear Contents 0111 PE Control power supply error Possible Control power supply input voltage is below specified range 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 When control power supply is turned on △ ○ During operation △ ○ Corrective Measures CAUSE CORRECTIVE MEASURES 1 Faulty amplifier internal circuit Replace servo amplifier. 2 Power supply input voltage is below specified range Set voltage within specified range. 3 Fluctuation or momentary interruption of input power voltage Check power supply
8. MAINTENANCE 8 - 9 Alarm Status Segment LED Display Alarm Code ALM8,4,2,1 Abbreviation Alarm NameAlarm Clear Contents DE1 Encoder disconnection (sensor error)Not possibleDisconnection of sensor signal (A, B, C or PS signal) line was detected DE2 Serial disconnection (sensor error)Not possibleDisconnection of sensor signal (PS signal) line was detected DE3 Encoder initial error (sensor error) Not possibleInitial data of motor sensor can not be read in. 1000 DE4 Serial receiving stop (sensor error)Not possibleNo feedback of absolute position data from absolute sensor EXDE External encoder disconnectionPossible Disconnection of full close sensor signal line was detected. 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 6 When control power supply is turned on ○ ○ ○ ○ ○ ○ After servo ON ○ ○ During operation △ ○ ○ Corrective Measures CAUSE CORRECTIVE MEASURES 1 Encoder wiring: • Incorrect wiring • Loose connector • Poor connector contact • Encoder cable is too long • Encoder cable is too thin • Check and correct wiring. • Check if sensor power voltage of motor is over 4.75V. Correct if necessary. 2 Wrong sensor classification setting of amplifier Correct setting. 3 Sensor classification setting differs from actual sensor. Replace with servomotor attached with correct sensor. 4 Faulty amplifier control circuit Replace servo amplifier. 5 Faulty servomotor sensor Replace servomotor. 6 Parameter setting is for full close servo system. Set parameters for semi-close system (Mode2-page0 Func0-bit7).
8. MAINTENANCE 8 - 10 Alarm Status Segment LED Display Alarm Code ALM8,4,2,1 AbbreviationAlarm NameAlarm Clear Contents 1001 MPE Main power supply drop Possible Main circuit power supply voltage drop 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 ○ △ After main circuit power supply is turned on ○ ○ During motor operation (alarm can be reset) △ ○ During motor operation (alarm can not be reset) ○ Corrective Measures CAUSE CORRECTIVE MEASURES 1 Power supply voltage is below specified rangeSet power supply to within specified range. 2 Main circuit rectifier is broken Replace servo amplifier. 3 Input voltage dropped. Or momentary interruption occurred. Check main power supply not to occur momentary interruption or power drop. 4 Low voltage of out of specification is supplying to main circuit (R.S.T) Check main circuit voltage not to supply around power from other to R. S. T when main circuit OFF. 5 Faulty internal circuit of servo amplifier Replace servo amplifier
8. MAINTENANCE 8 - 11 Alarm Status Segment LED Display Alarm Code ALM8,4,2,1 AbbreviationAlarm NameAlarm Clear Contents 1010 FP Main power supply phase loss Possible Phase loss detected in 3-phase main power supply input 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 When control power supply is turned on ○ When main power supply is turned on ○ ○ During motor operation △ Alarm occurred although specified single phase power input ○ Corrective Measures CAUSE CORRECTIVE MEASURES 1 Faulty input contact on one of the R, S, T phases Check and correct wiring. 2 Faulty amplifier internal circuit Replace servo amplifier 3 Servo amplifier is not specified for single phase • Confirm model number and delivery specification of servo amplifier. Replace with amplifier for single phase, if necessary. • Change parameter for single phase Amplifier (Mode4-page8 PSKD)
8. MAINTENANCE 8 - 12 Alarm Status Segment LED Display Alarm Code ALM8,4,2,1 AbbreviationAlarm NameAlarm Clear Contents 1100 SE Velocity control error Possible Velocity control is not functioning normally 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 ○ Upon servo ON input ○ ○ Upon command input ○ ○ ○ When motor is started or stopped ○ Corrective Measures CAUSE CORRECTIVE MEASURES 1 Incorrect wiring of U, V, W phases between amplifier and motor Check and correct wiring. 2 Incorrect wiring of A, B phases between INC-E and ABS-E encoder connection Check and correct wiring. 3 Motor is vibrating (oscillating) Adjust servo parameter to stop vibration (oscillation). 4 Overshoot and/or undershoot is too large Use the analog monitor of the remote controller to check the velocity • Adjust servo parameter to reduce overshoot and/or undershoot. • Increase acceleration/deceleration command time. Or, mask the alarm by setting Func2 of remote controller. 4 Faulty servo amplifier control circuit Replace servo amplifier. Velocity control error alarm is set to “not detecting” as standard, but can be change to “detecting” by setting bit5 of Func2 to “0” when necessary. This alarm may be detected during motor start or stop in cases where load inertia is high or for applications with G-force axis. In these cases, set bit5 of Func2 to “1” for “not detecting”.
8. MAINTENANCE
8 - 13
Alarm Status
Segment LED
Display Alarm Code
ALM8,4,2,1 AbbreviationAlarm
NameAlarm
Clear Contents
1101 OVF Excess
position
deviationPossible Position loop deviation counter exceeded
allowable value
Operating State when alarm occurred
POSSIBLE CAUSES OPERATING STATE
12345678 9 10 111213
When control power supply is turned on ○
During stoppage at servo ON ○
○
When command input is started ○△○○○
○△ ○
△
During high speed start or stoppage ○○
○○ ○
△○
During operation with a long command ○
○△
△
After JOG/ Tune ○
Corrective Measures
CAUSE CORRECTIVE MEASURES
1 Position command frequency is too high, or
acceleration/deceleration time is too short. Review controller position command.
2 Load inertia is too high or motor capacity is
too low Review load conditions, or change to larger capacity
motor.
3 Holding break is not released Check and correct wiring. Replace servomotor if
wiring is correct (and voltage is applied as specified),
4 Motor is mechanically locked, or there is
mechanical interference Review mechanics
5 One or all of the U, V, W phases between
amplifier and motor is disconnected. Check and correct wiring.
6 Motor rotation caused by external force
(gravity, etc.) during stoppage (completion of
positioning). Review load or change to larger capacity motor.
7 • Current limiter is activated by command from
controller, with limit value set too low.
• Set encoder pulse number does not match
motors. • Increase limit value or switch off current limiter.
• Change to the encoder pulse number of motor
8 Improper servo parameter setting (position
loop gain, etc.) Revise parameter setting (increase position loop gain,
etc.).
9 Excess deviation setting is too low Increase excess deviation value from controller.
10 Faulty amplifier control board Replace servo amplifier.
11 Faulty servomotor sensor Replace servomotor.
12 Power supply voltage drops Check power supply voltage again.
13 Normal and no problem This is in considering to deviation left at controller after
JOG operation or tuning from remote controller. Clear
alarm to recover, or stop alarm by setting MODE2/
page7/ bit4 to “1” with remote controller to stop alarm.
8. MAINTENANCE 8 - 14 Alarm Status Segment LED Display Alarm Code ALM8,4,2,1 AbbreviationAlarm NameAlarm Clear Contents 0011 EXOH External overheat Possible External overheat was detected. 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 When control power supply is turned on ○ ○ △ After operating for a short period ○ △ Corrective Measures CAUSE CORRECTIVE MEASURES 1 Although the system is of not connecting external thermal, Amplifier sets to external overheat detection valid. Change parameter setting to external overheat detection invalid (Mode2-Page4 Func3-bit4,5) 2 In case of system connecting external thermal, wiring is disconnected. Check and correct wiring. 3 External thermal terminal (external regenerative resistor) operated. • Review operational conditions. • Increase capacity of external regenerative resistor 4 Faulty servo amplifier control board Replace servo amplifier