L2: Momentary Power Loss Ride-Thru - YASKAWA A1000 HHP Programming Manual

1.8 L: Protection Functions
Determines drive operation when a thermistor disconnect fault (THo) occurs.
No.
L1-19 Operation Time at Thermistor Disconnect (NTC)
Setting 0: Ramp to Stop
The drive stops the motor using the deceleration time set in parameter C1-02.
Setting 1: Coast to Stop
The drive output is switched off and the motor coasts to a stop.
Setting 2: Fast Stop
The drive stops the motor using the Fast stop time set in parameter C1-09.
Setting 3: Alarm Only
The operation is continued and a THo alarm is displayed on the digital operator.
n L1-20: Operation at Motor Overheat
Note: This parameter is only available in models 4A0930, 4A1200, and A1000 HHP.
Determines drive operation when a motor overheat fault (oH5) occurs.
No.
L1-20
Setting 0: Ramp to Stop
The drive stops the motor using the deceleration time set in parameter C1-02.
Setting 1: Coast to Stop
The drive output is switched off and the motor coasts to a stop.
Setting 2: Fast Stop
The drive stops the motor using the Fast stop time set in parameter C1-09.
Setting 3: Alarm Only
The operation is continued and an oH5 alarm is displayed on the digital operator.
n L1-21: Thermally Sensitive Resistor Selection
Sets the type of thermistor input for Motor 1 and Motor 2.
No.
L1-21
Setting 0: H5 Table Selection
Setting 1: Pt100 Table Selection
u

L2: Momentary Power Loss Ride-Thru

n L2-01: Momentary Power Loss Operation Selection
When a momentary power loss occurs (DC bus voltage falls below the level set in L2-05), the drive can automatically return
to the operation it was performing prior to the power loss based on certain conditions.
No.
L2-01
Setting 0: Disabled (default)
If power is not restored within 15 ms, a Uv1 fault will result and the motor coasts to stop.
Setting 1: Recover within L2-02
When a momentary power loss occurs, the drive output will be shut off. If the power returns within the time set to parameter
L2-02, the drive will perform Speed Search and attempt to resume operation. If the power does not return within this time, it
will trigger a Uv1 fault.
134
Name
Name
Operation at Motor Overheat
Name
Thermally Sensitive Resistor Selection
Name
Momentary Power Loss Operation Selection
YASKAWA ELECTRIC SIEP YEAHHP 01B YASKAWA AC Drive – A1000 HHP Programming Manual
Setting Range
0 to 3
Setting Range
0 to 3
Setting Range
0, 1
Setting Range
0 to 5
Default
3
Default
1
Default
0
Default
0