Mitsubishi Electric 800 Series Instruction Manual page 55

No.
58 SY1/SY2 terminal read-back fault
61 SY1/SY2 terminal test pulse diagnosis
fault
69 Safety communication error
71 Monitoring speed selection fault
72 SLS1 overspeed
73 SLS2 overspeed
74 SLS3 overspeed
75 SLS4 overspeed
Name
A fault is detected by the output
read-back diagnosis.
A fault is detected by the test pulse
diagnosis.
A safety communication error is
detected.
The SLS function or the SSM
function was activated while "0
(initial value)" is set in Pr.S001
Monitoring speed selection.
The time set in Pr.S018 SLS
speed detection delay time has
elapsed after the motor speed
exceeded the Pr.S006 SLS
frequency 1.
The time set in Pr.S018 SLS
speed detection delay time has
elapsed after the motor speed
exceeded the Pr.S007 SLS
frequency 2.
The time set in Pr.S018 SLS
speed detection delay time has
elapsed after the motor speed
exceeded the Pr.S008 SLS
frequency 3.
The time set in Pr.S018 SLS
speed detection delay time has
elapsed after the motor speed
exceeded the Pr.S009 SLS
frequency 4.
Description
• Check that the power supply of output
terminals is normal.
• Take measures against noises.
If the problem still persists after taking the
above measure, contact your sales
representative.
• Take measures against noises.
If the problem still persists after taking the
above measure, contact your sales
representative.
• Check the wiring.
• Take measures against noises.
• Set the timeout time correctly.
To use the SLS function or the SSM
function, set Pr.S001 = "1".
• Check if the start command is turned
ON or the Pr.S014 SLS operation
frequency 1 setting is equal to or
more than the Pr.S006 setting.
• Check if the Pr.S010 SLS
deceleration monitoring time 1
setting is too short.
• In consideration of acceleration/
deceleration time, change the setting
so that the motor speed becomes
equal to or lower than the Pr.S006
setting within the time set in Pr.S010.
• Check if the start command is turned
ON or the Pr.S015 SLS operation
frequency 2 setting is equal to or
more than the Pr.S007 setting.
• Check if the Pr.S011 SLS
deceleration monitoring time 2
setting is too short.
• In consideration of acceleration/
deceleration time, change the setting
so that the motor speed becomes
equal to or lower than the Pr.S007
setting within the time set in Pr.S011.
• Check if the start command is turned
ON or the Pr.S016 SLS operation
frequency 3 setting is equal to or
more than the Pr.S008 setting.
• Check if the Pr.S012 SLS
deceleration monitoring time 3
setting is too short.
• In consideration of acceleration/
deceleration time, change the setting
so that the motor speed becomes
equal to or lower than the Pr.S008
setting within the time set in Pr.S012.
• Check if the start command is turned
ON or the Pr.S017 SLS operation
frequency 4 setting is equal to or
more than the Pr.S009 setting.
• Check if the Pr.S013 SLS
deceleration monitoring time 4
setting is too short.
• In consideration of acceleration/
deceleration time, change the setting
so that the motor speed becomes
equal to or lower than the Pr.S009
setting within the time set in Pr.S013.
Corrective action
55
7. Protective Functions
3
4
5
5
5
5
7
8
9
10