Eurotherm 582, Руководство по эксплуатации продукта, Страница: 32 / 47

Chapter 9 Trouble Shooting
9 - 2 582/583/5831
PROBLEM POSSIBLE CAUSE REMEDY
DC INJECTION BRAKING DIFFICULTIES DC INJECTION BRAKING DIFFICULTIES DC INJECTION BRAKING DIFFICULTIES DC INJECTION BRAKING DIFFICULTIES
Motor starts to brake, then
cuts out before the braking
is completed, leaving the
motor to coast to a stop
Internal time out has acted.
During the braking
sequence, the ramp acts as
a time-out, by ramping
down from the setpoint to
zero. The drive then waits a
further 5 seconds, and stops
the drive if the braking is not
completed. Increase ramp down time.
Time-out will operate in ramp
time from setpoint, plus 5
seconds.
Motor brakes almost to a
standstill, but does not quite
stop before the drive cuts
out. Not enough boost. When
the shaft has almost reached
standstill, the degree of
braking is determined by the
boost pot. Increase boost.
Braking does not operate at
all.
Motor coasts to rest
Motor rating smaller than
drive rating. Select correct rating on DIL
switches.
Turn down current limit.
Not enough boost. Increase boost.
Current limit too high for
motor. Turn down current limit.
Motor brakes but crawls at a
low speed before the drive
cuts out. Boost potentiometer setting
and current limit settings
incompatible. Reduce boost setting or increase
current limit setting, or both.
Motor runs off load but stalls
On-Load with no indication. Motor connections incorrect.
Check motor data. Standard motor requires Delta
Connection for 220V, Star
Connection for 415V
Despite low inertia, it is not
possible to achieve the
fastest ramp up rates. The ramp up rate is being
slowed by the current limit. Set switch 9 to ‘on’.