BENSHAW RSi-030-SG-4B, Service Manual

Page: 87 / 116

Pub.# 890046-10-00
Dec. 2015
Section 4, Page
5
of
32
Fault Causes Solutions
Over Voltage
during running
Regenerative Load ‐ Feeders,
Crushers, Stamping Press.
Enable Stall Mode (FUN ‐ 70) ‐ This function
attempts to regulate the DC Bus below the trip
level by increasing the speed of the motor
(forcing the regen power back out to the motor).
Add Dynamic Braking Module and Resistor.
Sudden change in speed
reference signal.
Increase Accel and Decel times (DRV ‐ 01 and
DRV ‐ 02)
Changes in load from full
load to no load.
Avoid rapid changes in load.
Over Voltage
during
Deceleration
Decel Time too short Increase Decel time (DRV ‐ 02).
Change stop mode (FUN ‐ 23) to Coast to Stop
(Free Run).
Regenerative Load. Enable Stall Mode (FUN ‐ 70) ‐ This function
attempts to regulate the DC Bus below the trip
level by increasing the speed of the motor
(forcing the regen power back out to the motor).
Add Dynamic Braking Module and Resistor.