GE Industrial Solutions AF-300C AC Drive - Manual (Page 102)

OVERVOLTAGE UNDERVOLTAGE
YES
YES
Can the deceleration
time Until it
time be increased?
out of the
I trip range
NO
Are the dynamic
braking unit(s) and
resistor(s) in use?
I
Dynamic braking
and resistor(s) may be
required.
NOTE: Overvoltage
or trip will
occur if the DC
age goes out of the speci-
fied range.
Figure 8-8. “OVERVOLTAGE”
TROUBLESHOOTING CHART
1
YES
Has power failure
(including momentary)
occurred?
NO
the three line-to-line
Remove RUN
command, reset,
and restart.
(When Auto-Restart is
active, the inverter will
clear the
trip and
restart provided the
power is not off for too
long.)
power voltages
balanced (within
NO Correct the power line
YES
problem.
the same power system
require a large starting
current?
NO
YES
I
Did trip occur when
I
the circuit breaker or
input contactor was
turned off?
YES NO
A low voltage trip may
be experienced when
power is removed from
L3 (this is
normal). Remove RUN
I
command, reapply
power, and press
RESET if the trip is still
I
present.
I
Is the power voltage
I
within the specified NO
range?
Check that the
I
power
system meets the
YES specification. (Is the
K V A of the
oes another load
rating
Is the DC Link voltage
approximately equal to
AC line-to-line voltage at
terminals L2, and L3
times the square-root
Potential noise
YES
Check that proper noise
prevention measures
have been taken.
twisted wire for control
inputs. (Do not connect
terminals 11 or CM to
Figure 8-9.
TROUBLESHOOTING CHART
8-1 Cl