II K 6-30
Operating Instructions
6.4.6 Alarm Signals (A)
The alarm signals will be shown on the seven segment display of the
control board SDCS-CON-3 as codes A . . as well as on the LCD of
the control panel DCS 400 PAN as clear text. Alarm signals will only
be displayed, if there is no fault signal active.
The alarm signals with the exception of A9 (Emergency Stop) do
not cause the drive to stop.
Alarm message
Alarm no.
Definition /
Possible source
Param.
A 1 Parameters Added Alarm Parameters Added
A new software version was
downloaded that contains more
parameters than the old soft-
ware . These new parameters
have been set to their default
values. The last one of them is
showing by its number in Pa-
rameter 7.03 Diagnosis.
Please check the new parame-
ters and, if you intend to use
them please set them to desired
value. Also please update the
text of your control panel by us-
ing a service program or contact
your local ABB service center.
7.12
bit 0
A 2 Mains Voltage Low
see also F9
Alarm Mains Voltage Low
The main voltage has droped
down to 5% (fix) higher than the
level which causes F9.
• Please check the level of
main voltage.
• AC/DC voltage does not
correspond to each other.
7.12
bit 1
A 3 Arm Circuit Break Alarm Armature Circuit Break
The armature reference is not
equal to zero but the actual ar-
mature current stays at zero
level for sometime.
Please check all connections
and fuses of the armature cir-
cuit.
7.12
bit 2
A 4 Converter Temp High
see also F7
Alarm Converter Temperature
High
The Temperature of the con-
verter has reached a value that
is 5°C lower than the level which
causes F7 fault.
Please check the correct opera-
tion of the converter fan and the
load conditions.
7.12
bit 3
A 5 Motor Temp High
see also F8
Alarm Motor Temperature
High
The temperature of the motor is
too high (if PTC resistor is con-
nected to AI2.
Please check the correct opera-
tion of the motor fan and the
load conditions.
7.12
bit 4
A 6 Arm Current
Reduced
Alarm Armature Current Re-
duce
The drive is equipped with an I
2
t
protection for the motor. This
alarm is issued while this pro-
tection function forces the ar-
mature current down to the
specified recovery level (see
description of I
2
t protection after
the specified overload time Pa-
rameter Overload Time (3.05)).
Please check the suitable load
cycle for your motor.
7.12
bit 5
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