374 Fault tracing
71A5
Mechanical brake
opening not allowed
Open conditions of mechanical
brake cannot be fulfilled (for
example, brake has been
prevented from opening by
parameter
Check mechanical brake settings in
parameter group
).
Check that acknowledgement signal (if
used) matches actual status of brake.
In an encoderless application,
the brake is kept closed by a
brake close request (either
from parameter
FSO-xx safety functions
module) against a modulating
drive for longer than 5
seconds.
Check the source signal selected by
parameter
Check the safety circuits connected to
the FSO-xx safety functions module.
71B1
Motor fan
Programmable fault:
No feedback received from
external fan.
Check external fan (or other equipment
controlled) by the logic.
Check settings of parameters
.
7301
Motor speed feedback
No motor speed feedback
received.
See
).
7310
Overspeed
Motor is turning faster than
highest allowed speed due to
incorrectly set
minimum/maximum speed,
insufficient braking torque or
changes in load when using
torque reference.
Check minimum/maximum speed
settings, parameters
.
Check adequacy of motor braking torque.
Check applicability of torque control.
Check need for brake chopper and
resistor(s).
Incorrect estimated speed.
Check the status of motor current
measurement.
Perform a
or
ID run instead of, for
example, a
ID run.
(page
).
7380
Encoder internal
Internal fault.
Contact your local ABB representative.
7381
Encoder
Encoder feedback fault.
See
).
73A0
Speed feedback
configuration
Speed feedback configuration
incorrect.
See
(page
).
73A1
Load feedback
No load feedback received.
Check the auxiliary code (format XXYY
ZZZZ). “XX” specifies the number of the
encoder interface module (
01
:
02
:
/
), “YY”
specifies the encoder (
01:
). “ZZZZ” indicates the
problem (see actions for each code
below).
0001 Load gear definition invalid or
outside limits.
Check load gear settings (
and
Code
(hex)
Fault
Cause
What to do
Содержание ACS860
Страница 1: ... ABB INDUSTRIAL DRIVES ACS860 primary control program Firmware manual ...
Страница 4: ......
Страница 10: ...10 Table of contents ...
Страница 18: ...18 Using the control panel ...
Страница 24: ...24 Control locations and operating modes ...
Страница 54: ...54 Program features ...
Страница 78: ...78 Program features ...
Страница 90: ...90 Application macros ...
Страница 342: ...342 Additional parameter data ...
Страница 380: ...380 Fault tracing ...
Страница 381: ...Fault tracing 381 ...
Страница 382: ...382 Fault tracing ...
Страница 436: ...436 Control chain diagrams ...