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★
= ROM default setting. Text in ( ) = display text. Figures in [ ] are used when communicating with the bus.
VLT
®
Series 2000
Programming
Status Messages
UNIT READY (LOCAL)
Control card and power section are powered up and OK.
When the adjustable frequency drive's output
frequency is reduced more quickly than the motor
speed (due to inertia) can be changed, the motor
will act as a generator. It will send energy back to
the VLT and as a result the intermediate circuit
voltage will increase.
ENABLED STOP (LOCAL)
Unit ready and Q-stop signal active.
START (LOCAL)
Enabled and start signal applied, no or too low reference
signal.
Alarm Messages
The following alarm messages are displayed after the
power section of the VLT adjustable frequency drive has
been disconnected.
RUN OK (LOCAL)
Unit is running on reference.
JOGGING (LOCAL)
RAMPING (LOCAL)
If the warning OVERVOLTAGE is displayed when
the speed is reduced, you can increase the ramp-
down time. If that is not possible, it may be
necessary to activate the dynamic brake function
with brake resistor. If the warning occurs in other
situations, the problem is due to the AC line.
Messages
Caused by
Consequence
Reset
INVERTER
Unknown error (not one of those
Yes, possible
FAULT
errors mentioned below)
OVER
a: Supply voltage too high
a: Lower supply voltage
Yes, possible
VOLTAGE
b: Ramp-down time too short
b: Increase ramp down time or
activate brake function to avoid
overvoltage
UNDER
Supply voltage too low or
Yes, possible
VOLTAGE
loss of AC line phase
OVER
Motor current too high or wrong
Check motor parameters
Yes, possible
CURRENT
motor parameter setting
Use a larger VLT
GROUND
Short circuit between VLT
Check installation
No, power off required
FAULT
power section and ground
and cable length
SHORT
Short circuit between
Check installation
No, power off required
CIRCUIT
two motor phases
OVER TEMP.
VLT temperature too high
Check installation
No, power off required
OVER
Load too heavy
Yes, possible after VLT
LOAD
thermal protection is
lower than 100%
MOTOR
Motor protection
Yes, possible after VLT
TRIP
motor protection is zero
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