Yaskawa A1000 AC Drive - Manual (Page 9)

2 Overvoltage Suppression A1000 Custom Software
YASKAWA TM.A1000SW.062 Overvoltage Suppression A1000 Custom Software Supplement 9
Table 4 Additional Function Text
Table 5 Monitors U1-††
Table 6 Multi-Function Input Settings H1-††
P2-01 060Ah
Belt Break Detection
Belt Break Det
This parameter configures the Belt Break
Detection function. If the drive's soft starter
is at maximum output frequency (E1-04) for
more than 30 seconds, a belt break fault (B-
BRK) will occur.
0: Disabled
1: Enabled
0 to 1 1 No – – – – Y – Y
Function: Torque Ramp During Start
P3-01 0614h
Torque Limit During Start
Start Torque
This parameter determines the forward and
reverse motoring torque limits after a run
command is received, but before the torque
start timer (P3-02) expires. This parameter
overwrites L7-01 and L7-02.
0 to 300 200 % No – – – – Y – –
P3-02 0615h
Torque Limit During Start
Timer
Start Torq Time
This parameter sets the time that parameter
P3-01 will overwrite L7-01 and L7-02 after
a run command is received.
0.0 to 10.0 0.0 sec No – – – – Y – –
P3-03 0616h
Torque Limit During Start
Ramp Time
Torq Lim Ramp Tm
This parameter sets the time required to
ramp the torque limit 100%. This
determines the rate at which the torque
limits will return to the L7-01 and L7-02
values at the end of the starting torque time
(P3-02).
0.1 to 10.0 1.0 sec No – – – – Y – –
<1> The response of this parameter will be affected by drive size. If a drive is replaced with one of a different size (current rating), this parameter may need
adjustment.
<2> Making large changes in these settings while the drive is running can result in large and very rapid changes in the output frequency.
Change these parameters in small increments only.
Function No.
Function Name
Digital Operator Display
P
(Function group)
Overvoltage Suppression
OV Suppression
P1
Overvoltage Suppression
OV Suppression
P2
Belt Break
Belt Break
P3
Torque Limit During Start
Torque Dur Start
U7
Overvoltage Suppression
OV Suppression
Monitor No.
MEMOBUS/
Modbus
Address
Monitor Name
Digital Operator
Display
Description
Analog output
scaling
Unit
Control Method/
Access Level
U7-02 0661h
Soft Start Frequency
Reference
Soft Start Freq
Displays the frequency reference after the soft starter,
but before the OV Regulator PI controller output.
100% =
Fmax (E1-04)
0.01 Hz – – – – Y – Y
U7-03 0662h
Overvoltage Frequency
Reference
OV Reg Total Ref
Displays the frequency reference after the output of the
OV Regulator PI controller.
100% =
Fmax (E1-04)
0.01 Hz – – – – Y – Y
U7-04 0663h
Overvoltage Suppression
Regulator Error Signal
OV Reg Error
Displays the error (setpoint - feedback) of the OV
Regulator PI controller.
100% =
Motor Rated
Torque (Iq)
0.1 % – – – – Y – Y
U7-05 0664h
Overvoltage Suppression
Regulator Output
OV Reg Output
Displays the output of the OV Regulator PI controller.
100% =
Fmax (E1-04)
0.1 % – – – – Y – Y
Setting Description
Control Method/
Access Level
80
OVS Disable
Closed: Disables the OV Suppression function if OV Suppression is enabled (P1-01=1).
Note: If this input is opened while OV Suppression is running, the drive will ramp the OV
Suppression regulator setpoint from -100% to P1-02 at a fixed rate of 122% / second to prevent
irregularities in motor operation.
– – – – Y – Y
No.
MEMOBUS/
Modbus
Address
Name
Digital Operator Display
Description Range
Default
Value
Change
During
Run
Control
Method/
Access Level