70 Functional Description Emotron AB 01-3694-01r2
Motor Sound [22A]
Sets the sound characteristic of the VSD output stage by
changing the switching frequency and/or pattern. Generally
the motor noise will go down at higher switching frequen-
cies.
Communication information
Encoder Feedback [22B]
Only visible if the Encoder option board is installed. This
parameter enables or disables the encoder feedback from the
motor to the VSD.
Communication information
Encoder Pulses [22C]
Only visible if the Encoder option board is installed. This
parameter describes the number of pulses per rotation for
your encoder, i.e. it is encoder specific. For more informa-
tion please see the encoder manual.
Communication information
Encoder Speed [22D]
Only visible if the Encoder option board is installed. This
parameter shows the measured motor speed. To check if the
encoder is correctly installed, set Encoder [23B] to Off, run
the VSD at any speed and compare with the value in this
menu. The value in this menu [22D] should be about the
same as the motor speed [712]. If you get the wrong sign for
the value, swap encoder input A and B.
Communication information
NOTE: To run the VSD it is not mandatory for the ID RUN
to be executed, but without it the performance will not
be optimal.
NOTE: If the ID Run is aborted or not completed the
message “Interrupted!” will be displayed. The previous
data do not need to be changed in this case. Check that
the motor data are correct.
Default: F
E 0 Switching frequency 1.5 kHz
F 1 Switching frequency 3 kHz
G 2 Switching frequency 6 kHz
H3
Switching frequency 6 kHz, random fre-
quency (+
750 Hz)
Modbus Instance no/DeviceNet no: 43050
Profibus slot/index 168/209
Fieldbus format UInt
Modbus format UInt
NOTE: At switching frequencies >3 kHz derating may
become necessary. If the heat sink temperature gets too
high the switching frequency is decreased to avoid
tripping. This is done automatically in the VSD. The
default switching frequency is 3 kHz.
Default: Off
On 0 Encoder feedback enabled
Off 1 Encoder feedback disabled
22A Motor Sound
Stp M1: F
A
22B Encoder
Stp M1: Off
A
Modbus Instance no/DeviceNet no: 43051
Profibus slot/index 168/210
Fieldbus format UInt
Modbus format UInt
Default: 1024
Range: 5–16384
Modbus Instance no/DeviceNet no: 43052
Profibus slot/index 168/211
Fieldbus format
Long
1=1 pulse
Modbus format EInt
Unit: rpm
Resolution: speed measured via the encoder
Modbus Instance no/DeviceNet no: 42911
Profibus slot/index 168/70
Fieldbus format Int
Modbus format Int
22C Enc Pulses
Stp M1: 1024
A
22D Enc Speed
Stp M1: XXrpm
A
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