KFU 2-/4-
173
14.4.3 Error
Acknowledgment
The frequency inverters feature various monitoring functions which can be adapted
via the error and warning behavior. Switching the frequency inverter off at the various
operating points should be avoided by an application-related parameterization. If
there is a fault switch-off, this report can be given via the parameter
Pro-
gram(ming)
34
or the logic signal can be acknowledged with parameter
Error ac-
knowledgment
103
.
14.4.4 Timer
The time functions can be selected via the parameters
Operation mode Timer 1
790
and
Operation mode Timer 2
793
. The sources of the logic signals are selected with
the parameters
Timer 1
83
and
Timer 2
84
and processed according to the config-
ured timer functions.
14.4.5 Thermo
contact
The monitoring of the motor temperature is a part of the error and warning behavior
which can be configured as required. The parameter
Thermocontact
204
links the
digital input signal to the defined
Operation mode Motor-PTC
570
which is described
in chapter "Motor Temperature". The temperature monitoring via a digital input
checks the input signal for the threshold value. Accordingly, a thermocontact or an
additional circuit must be used if a temperature-dependent resistor is used.
14.4.6 n-/M Control Change-Over
The field-orientated control procedures in configurations 230 and 430 contain the
functions for speed or torque-dependent control of the drive. The change-over can be
done in ongoing operation, as an additional functionality monitors the transition be-
tween the two control systems. The speed controller or the torque controller is active,
depending on the
n-/M control change-over
164
.