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IMPULSE®•G+ & VG+ Series 4 Instruction Manual – February 2017
6-4
Table 6-3: Drive Faults and Alarms
Motor rotates, but at minimum speed only.
1. Check wiring of speed inputs.
2. Verify speed reference setting (A01-04).
3. Verify reference and run source settings are correct (B03-
01, -02).
4. Verify reference priority setting (B01-18).
5. Verify encoder direction (VG+).
Motor RPM too high or too low.
1. Compare motor nameplate specifications with E2
parameters.
2. Check maximum frequency setting (E01-04).
3. Check minimum frequency setting (E01-09).
Code
Fault/Alarm Description
Corrective Action
Fa
ult
Alarm
AS1
(flashing)
Anti-Shock
Anti-Shock Indicator.
When the
Anti-Shock function is triggered, this
alarm will be displayed on the keypad
for the duration of time set via C07-
22.
1. No action is required.
X
BB
(flashing)
Base Block
External Base Block Indicator.
The
flashing base block signal is the
result of a multi-function input in the
terminal strip. The base block
indicates that the drive’s IGBTs have
been disabled. The motor will begin
coasting when the base block input is
received. If a RUN command is still
present when the BB signal is
removed, the output voltage will be
restored to the previous operating
level and operation will continue at
the previously commanded
frequency.
1. Check constants H01-01 through
H01-08 for proper programming.
2. Check terminal status (U01-10).
X
BE0
(flashing)
Brake Ans Lost
Brake answer back signal is lost
during run.
While running, the multi-
function input brake answer back
(H01-0x = 58) is lost.
1. Check brake answer back circuit.
2. Check terminal status. (U01-10)
X
X
BE0-2
Brake2Ans Lost
Brake 2 answer back signal is lost
during run.
Brake Answer-Back 2
closes during operation.
1. Check brake answer back circuit.
2. Check terminal status. (U01-10)
X
X
BE1
Rollback detect
Torque Proving Fault.
The BE1
fault indicates that the drive has
released the brake, but not started to
accelerate the motor when it detects
excessive encoder feedback. A BE1
fault will occur if the pulses received
during the BE1 detection time (C08-
04) are greater then the expected
number of pulses (C08-05).
1. Increase the value of C08-21.
2. Please reference troubleshooting
encoder related faults on page 6-
16.
X
Symptom
Corrective Action
Summary of Contents for Impulse G+ series 4
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Page 13: ...C h a p t e r 1 Introduction...
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Page 27: ...C h a p t e r 2 Installation...
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Page 41: ...C h a p t e r 3 Wiring...
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Page 67: ...C h a p t e r 4 Getting Started...
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Page 87: ...C h a p t e r 5 Programming Advanced Features...
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Page 223: ...C h a p t e r 6 Troubleshooting...
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Page 255: ...a p p e n d i x A IMPULSE G VG Series 4 Parameter Listing...
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