Specifications
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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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