Sanyo Denki Sanmotion R 3E S, Instruction Manual, Page: 342 / 514

8. Maintenance
8-9
Note 1) When the main power voltage increases or decreases gradually or is suspended, main circuit low voltage or main power failed phase may be
detected.
Note 2) Control power supply under-voltage or servo ready OFF is detected during instantaneous break of 1.5 to 2 cycles. Detection of control power
supply under-voltage and servo ready OFF can be delayed by setting larger value of Group B ID16 ”Power Failure Detection Delay Time
[PFDDLY]”.
Note 3) When moment cutting of a control power source is long, it regards in power supply interception and re-input, and does not leave detected control
power supply under-voltage to an alarm history. (If cutting exceeds 1 second at the moment, it will be certainly judged as power supply
interception.)
Note 4) Due to abnormality in encoder main body, encoder clear may sometimes be needed. “An encoder clear and the alarm reset method“ change
with motor encoders in use. Please refer to “8.4 Encoder clear and the alarm reset method. “
Note 5) When there is a rapid motor slow down simultaneous with servo ON, there is a possibility that a break in the motor’s power line cannot be
detected.
Note 6) Alarm that occurs in ‘Test mode end’ status is not recorded in the alarm history.
Note 7) When encoder connector EN2 is used as motor encoder input, "Alarm reset" is "No". When encoder connector EN2 is used as external encoder
input, "Alarm reset" is "Yes".
Note 8) For the servo amplifier with functional safety module, all alarms are treated as diagnosis function, so Safe Torque Off function is performed
simultaneously with alarm occurring. That is reason why Safe Torque Off state continues after alarm resetting. To start operation again, turn off
the servo ON input and return to servo ready state.