Yaskawa GPD503 Drive - Manual (Page 38)

2-7
2.5 AUTO-RESTART
A. Cn-36: Number of Auto-Restart Attempts Factory setting: 00
Range: 00 - 10
When a fault occurs during operation, the GPD 503 can be programmed for an auto-
restart operation to automatically reset the fault. Auto-restart operation will use the
number of reset attempts set in this constant, up to the maximum of 10. When set to
00 ,
no auto-restarts will be attempted.
• The following faults can be automatically reset:
oC: Overcurrent oL3: Overtorque
ou: Overvoltage (OV) oH: Overheat
oL2: Inverter overload Uu1: Undervoltage (Power UV)
• The following conditions WILL NOT initiate auto-restart:
1. oL1, EF , FU or CPF fault.
2. When OC or UV occurs during deceleration.
3. When Sn-11, digit 3 ( X 0 X X ) is programmed to stop during momentary power
failure. (See para. 2.16, MOMENTARY POWER LOSS RIDE-THRU.)
• The number of restart attempts available will be reset to the Cn-36 setting when:
1. 10 minutes has elapsed without a fault occurring.
2. The RESET key, or external Fault Reset push button, is pressed.
B. Sn-11: Protective Characteristics Digit 2 [ X X X X ]: Fault Contact
Select 2 Status During Auto-Restart
This digit controls how the fault contact responds to a GPD 503 fault during the auto-
restart operation.
0: Fault contact will not actuate during auto-restart attempts
1: Fault contact actuates during auto-restart attempts
Auto-Restart Operation Timing
2.6 Intentionally Deleted
FAULT DETECTION
FAULT CONTACT
OUTPUT FREQUENCY
Sn-11 = X X 1 X
Sn-11 = X X 0 X
MOTOR RPM
100 ms
AUTOMATIC FAULT RESET
Time from fault detection
to reset attempt, or time
between reset attempts