Sanyo Denki Py 2 Manual

 
8.  MAINTENANCE 
8 - 15 
Alarm Status 
Segment LED 
Display Alarm Code 
ALM8,4,2,1 AbbreviationAlarm 
Name Alarm 
Clear Contents 
 
1111 DSPE Servo 
processor 
error Not 
possibleBuilt-in servo processor (DSP) of amplifier 
is malfunctioning. 
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 Alarm history  OPERATING STATE 
1 2 
When control power supply is turned on △ ○ DSPE 
During operation   ○...

 
8.  MAINTENANCE 
8 - 16 
Alarm Status 
Segment LED 
Display Alarm Code 
ALM8,4,2,1 Abbreviation Alarm NameAlarm 
Clear Contents 
 
0101 RGOH Overheat of 
built-in 
regenerative 
resistor  Possible Overheating detected in internal 
regenerative resistor module. 
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 △ 
 ○ ○ 
During operation △ ○ ○...

 
8.  MAINTENANCE 
8 - 17 
Alarm Status 
Segment LED 
Display Alarm Code 
ALM8,4,2,1 Abbreviation Alarm NameAlarm 
Clear Contents 
 
0101 RGOL Regenerative 
error Possible Overload detected in regenerative 
resistor 
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 7 8 
When control power supply is turned on               ○
When main circuit power supply is turned on...

 
8.  MAINTENANCE 
8 - 18 
Alarm Status 
Segment LED 
Display Alarm Code 
ALM8,4,2,1 AbbreviationAlarm 
NameAlarm 
Clear Contents 
 
1111 MEME Memory 
error Not 
Possible• Amplifier capacity does not match motor 
code 
• Motor code change alarm 
• Error detected in the built-in non-volatile 
memory 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 
When control power...

 
8.  MAINTENANCE 
8 - 19 
Alarm Status 
Segment LED 
Display Alarm Code 
ALM8,4,2,1 AbbreviationAlarm 
NameAlarm 
Clear Contents 
 
1000 AEE Absolute 
sensor 
battery 
failure Possible Multiple-rotation data is indefinite due to 
battery back-up failure of absolute sensor. 
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 ○ ○ ○ △ 
During...

 
8.  MAINTENANCE 
8 - 20 
Alarm Status 
Segment LED 
Display Alarm Code 
ALM8,4,2,1 AbbreviationAlarm 
NameAlarm 
Clear Contents 
 
(Comes off) 
1111 CPUE Amplifier 
error Not 
PossibleBuilt-in CPU of amplifier is malfunctioning 
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 △ ○ 
 ○ 
During operation △ ○ ○ 
 
 
Corrective Measures 
 CAUSE...

 
8.  MAINTENANCE 
8 - 21 
 8.2 Troubleshooting (Non-Alarm)  
The following are the causes and corrective measures for troubleshooting non-alarm malfunctions. Consult 
your Sanyo Denki dealer should the malfunctions persist even after performing these troubleshooting 
measures. Please take note that it is dangerous to perform some of these procedures without first switching 
off the main power supply.       
 
Table 8-2 (1/2) Troubleshooting (Non-Alarm) 
No Malfunction Inspection Causes and corrective...

 
8.  MAINTENANCE 
8 - 22   
Table 8-2 (2/2) Troubleshooting (Non-Alarm) 
No Malfunction Inspection Causes and corrective 
measures 
6 Excessive overshoot/undershoot 
during start/stop  • Servo tuning at “High” 
• Lower velocity loop gain 
• Increase integral time constant 
• Loosen acceleration / 
deceleration command pattern 
• Use position command low pass 
filter 
(1)  Check for mechanical 
faults • Operate servomotor by itself   
• Check centering and balance on 
coupling 7 Abnormal noise 
(2)...

 
8.  MAINTENANCE 
8 - 23   
Alarm history will be displayed with           switch after switching slider on front panel to “HISTORY”. 
 
 
Table 8-2-2    Alarm History Display 
Switch No. Status 
0  Display current alarm and status (Normal setting) 
1  Display the last alarm 
2  Display the second alarm to the last 
3  Display the third alarm to the last 
4  Display the fourth alarm to the last 
5  Display the fifth alarm to the last 
6  Display the sixth alarm to the last 
7  Display the seventh alarm...

 
8.  MAINTENANCE 
8 - 24 
  8.3  Switching of Velocity Loop Proportional Gain Using 
Rotary Switch 
8.3.1 Overview 
The PY or PY2 amplifier allows for easy switching of the velocity loop gain with its 8-position rotary switch 
located on the front of the amplifier. 
 
 
8.3.2 Setting Procedure 
Set the slide switch on the front of the amplifier to GAIN.    Then, set the following parameters. 
 
Operator 
Mode0-12  Velocity loop proportional gain add value (KvpA) 
This parameter sets a weight per rotary...