Maintenance Trigger; Settings; Dc Hold; Speed Compensated Stop - ABB ACS355 User Manual

Maintenance trigger

A maintenance trigger can be activated to show a notice on the panel display when
eg drive power consumption has exceeded the defined trigger point.

Settings

Parameter group 29 MAINTENANCE TRIG

DC hold

With the motor DC hold feature, it is possible
to lock the rotor at zero speed. When both the
reference and the motor speed fall below the
preset DC hold speed, the drive stops the
motor and starts to inject DC into the motor.
When the reference speed again exceeds the
DC hold speed, the normal drive operation
resumes.
Settings
Parameters 2101...2106

Speed compensated stop

Speed compensation stop is available eg for
applications where a conveyer needs to travel
a certain distance after receiving the stop
command. At maximum speed, the motor is
stopped normally along the defined
deceleration ramp. Below maximum speed,
stop is delayed by running the drive at current
speed before the motor is ramped to a stop.
As shown in the figure, the distance travelled
after the stop command is the same in both
cases, ie area A equals area B.
Speed compensation can be restricted to forward or reverse rotating direction.
Settings
Parameter 2102 STOP FUNCTION
Program features 137
Motor speed
DC hold
DC hold
speed
Speed reference
DC hold
speed
Motor speed
Stop command
Max.
speed
Used
speed
t (s)
t (s)
area A = area B
A
B
t (s)