Operating Instructions ACU
11.2.7 Peak current
Parameter Peak Current 1192 is used during motor commissioning in order to set the Isq setpoint
limit in the frequency inverter. This is to protect the connected synchronous motor. The value can be
taken from the motor rating plate or the motor data sheet. Exceeding the value specified by the
manufacturer may result in motor damage.
I
FU,N
: Nominal value of frequency inverter
o: Overload capacity of frequency inverter.
11.2.8 Reverse sense of rotation
Parameter Change Sense of Rotation 1199 reverses the sense of motor rotation.
Change Sense of Rotation
1199
Motor turning right
(clockwise)
Motor turning left
(anti-clockwise)
Motor turning left
(anti-clockwise)
Motor turning right
(clockwise)
BONFIGLIOLI VECTRON MDS GmbH definition: clockwise sense of rotation with
positive setpoint, looking to the A-side of motor, provided that motor phases are
connected correctly. Upon reversal of the sense of rotation, the direction of rotation is
reversed while the setpoint remains the same. Any gears which might be installed
must be taken into consideration.
Change Sense of Rotation can only be edited with the output stage disabled.
Via Change Sense of Rotation 1199, the sense of rotation of the whole system (motor
control and sensor evaluation) is reversed.
If the senses of rotation of the motor and the sensor are different, this can be
changed in two ways:
By exchanging Track A and Track B the sensor inputs at ACU.
1.) Change sense of rotation of connected sensor via parameters 490 or 493.
11.3 Internal values
The following parameters are used for internal calculation of motor data and do not require any set-
up.
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