AC70 VC CONTROL FREQUENCY INVERTER MANUAL
FUNCTION PARAMETER DETAILED SPECIFICATION
118
command .
2. No alarm but stop When the inverter setting given communication command doesn’t receive next frame
command or any other communication command respond over
[H-17]
given time, inverter stop running.
LED “00” digit: Communication write operation mode.
0: Reply for write operation
1: No reply for write operation
LED “000” digit:: Reserve
LED “0000” digit: Reserve
Note: When inverter has been set for main machine, don’t perform RS485 communication broken checking.
H-73 Respond relay
Range: 0.000-1.000s
Default: 0.005s
This parameter defines the intermediate interval time between the frequency inverter receiving the data and
responding data back to the upper control. If the response delay time is shorter than the system handling time, the
response time should according to the system; If the response delay time is longer than the system handling time,
after system processing the data, it waits until the response delay time is up, then sends data to the upper
controller.
H-74
Instantaneous stop decel.
respond voltage lower limit
Range: 0%-200%
Default: 20%
H-75
Instantaneous stop decel.
respond voltage upper limit
Range: 0%-200%
Default: 90%
H-76
Instantaneous stop decel.
gain
Range: 0.01-10.00
Default:2.00
H-77
Voltage recover stability time Range: 0.0-100.0s
Default:2.0s
This function enable frequency inverter reducing the output frequency when power fails instantaneous or voltage
lower suddenly, compensate voltage lowed with energy feedback from load, to maintain inverter continue running in
shortly.
When the input voltage lower to
[H-74]
, inverter will start to reduce speed and DC bus voltage rise. When the input
voltage recovers to
[H-75]
, speed reducing will stop. When the current speed keep stable running after
[H-77]
setting time, inverter will accelerate to frequency reference given.
[H-76]
is defines as deceleration gain, the bigger setting, the quicker voltage rising, which suitable for small inertia
load. If this parameters is set for small, the voltage recovery rising slowly, which suitable for big inertia.
H-78
Torque compensation upper
limit
Range: 0.00-60.00%
Default:50.00%
This parameters is valid only in vector control mode, uses for controlling the torque compensation upper limit. Take
the rated inverter voltage as reference benchmark for compensation voltage.
H-79
Output terminal external
control status
Range: 0-9999
Default: 0
H-80 Reserve