15.1.1.5 Error and warning behavior
For monitoring the analog input signal, an operation mode can be selected via pa-
rameter Error/warning behavior 453.
Error/Warning Behavior 453
0 - Off The input signal is not monitored.
1 - Warning < 1V/2mA
If the input signal is lower than 1 V or 2 mA, a
warning message is issued.
2 - Shut Down < 1V/2mA
If the input signal is lower than 1 V or 2 mA, a
warning message is issued; the drive is deceler-
ated according to stopping behavior 2.
3 -
Error Switch-Off
< 1V/2mA
If the input signal is lower than 1 V or 2 mA, a
warning and fault message is issued and the
drive coasts to a standstill (stopping behavior 0).
Monitoring of the analog input signal is active regardless of the release of the fre-
quency inverter according to the operation mode selected.
Operation mode 2 defines the shut-down and stopping of the drive, regardless of the
setting of parameter Operation mode 630
for the stopping behavior. The drive is
stopped
according to stopping behavior 2. If the set holding time has expired, an
error message is issued. The drive can be started again by switch
ing the start signal
on and off.
Operation mode 3 defines the free coasting of the drive (like described for stopping
behavior 0), regardless of the setting of parameter Operation mode 630
for the
stopping behavior.
WARNING
The monitoring of the analog input signal via the parameter Error/Warning behavior
453 demands the examination of the parameter Characteristic point X1 454.
Example: Error/Warning behavior 453 = “2 - Stop < 1V/2mA” or “3 – fault switch-
off < 1V/2mA”. In the factory settings of the parameter Point X
1
454
or fault switch-off are affected at an output frequency â‰
0 Hz. If shutting down or
fault switch-
off are to be affected at an output frequency of 0 Hz, the Point X1 must
be adjusted (e.g. X1=10% /1 V).
50 Hz
9.8 V0.2 V
Y
X
0 Hz
(X1=2% / Y1=0%)
1 V
176 Operating Instructions ACU 06/13
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