7-14 Parameter Descriptions
MN767S
Par
No.
Description
Range
Units
Default
Explanation
P6-08
Modbus
Communication Loss
Timer
0: disabled
1..60
s
2
This parameter controls the
behavior of the drive in the event
of a loss of communication
between drive and Modbus
Network Master while the
drive is operating. When set
to zero, the drive will continue
running if communication with
the Modbus master is lost.
When set to a value larger than
zero, the drive will trip after the
number of seconds specified in
this parameter.
This parameter is active
regardless of the setting of
P1-07; hence even if the
Modbus Network Master is
being used to monitor the drive
rather than control it, a loss of
communication will still cause
the drive to trip.
P6-09
Speed Droop Control
0.0 …25.0% of P1-03
Hz
0
This parameter only applies
when the drive is in vector
speed control mode. (P4-
01=0) When set to zero, the
speed droop control function
is disabled. If P6-09 > 0, this
parameter effectively defines a
slip speed at motor rated output
torque.
The droop speed is the
percentage value of P1-03.
Depending on the motor load
condition, the reference speed
will be reduced by a certain
droop value before going into
the speed controller.
See equations below:
Droop speed = P6-09 * P1-03
Droop value = Droop speed * (
Motor real torque / Motor rated
torque)
Speed controller input = Speed
reference – Droop value
Table 7-7 Application Specific Parameters
Continued
Summary of Contents for VS1STS Series
Page 1: ...10 11 Installation Operating Manual MN767S VS1STS AC Microdrive ...
Page 6: ...iv MN767S ...
Page 28: ...5 8 Control Wiring MN767S ...
Page 50: ...8 2 Customizing Your Application MN767S ...
Page 54: ...9 4 Troubleshooting MN767S ...
Page 56: ...A 2 Technical Specifications MN767S ...
Page 68: ...D 2 Options and Kits MN767S ...