Danfoss MCO 351 Operating Instructions Manual page 32

Positioning controller vlt automationdrive fc 301/302
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Commissioning
NOTICE
The parameter is only visible when parameter 32-02
Absolute Protocol is not set to [0] None.
32-04 Absolute Encoder Baudrate X55
Select the baud rate of the attached encoder.
Option:
[0]
[1]
[2]
5
5
[3]
[4]
*
[5]
[6]
32-05 Absolute Encoder Data Length
Range:
25
[8-37 Bit] Specify the number of data bits for the
*
NOTICE
The parameter is only visible when parameter 32-02
Absolute Protocol is not set to [0] None.
32-06 Absolute Encoder Clock Frequency
Range:
262.000
[78.124–
*
2000.000 kHz]
NOTICE
This parameter is only visible when parameter 32-02
Absolute Protocol is not set to [0] None.
32-07 Absolute Encoder Clock Generation
Select whether the MCO should generate an absolute encoder
clock signal or not.
Option:
Function:
[0]
Off Select this option if more MCOs are connected to the
same absolute encoder and another MCO generates
the clock signal. Only 1 device is allowed to generate
the clock signal and only 1 device (encoder or MCO) is
allowed to generate the data signal when multiple
MCOs are interconnected.
[1]
On Select this option if the MCO is the only clock
*
generator for the connected absolute encoder.
30
Operating Instructions
Function:
600
Baud
1200
2400
4800
9600
19200
38400
Function:
connected absolute encoder, see encoder
datasheet. This is required for the MCO to
generate the correct number of clock bits.
Function:
Specifies the frequency of the
absolute encoder clock signal
generated by the MCO. Set a
frequency appropriate for the
connected encoder.
Danfoss A/S © 04/2014 All rights reserved.
NOTICE
This parameter is only visible when parameter 32-02
Absolute Protocol is not set to [0].
32-08 Absolute Encoder Cable Length
Range:
Function:
0
[0-300
The absolute encoder (SSI) clock and data signals
*
m]
will be out of synchronisation if the signal delay
caused by the encoder cable is too long. The MCO
automatically compensates the cable delay when
the cable length is known. The cable delay
compensation is based on a cable delay of approx-
imately 6 ns (6 x 10
the total cable length (in meters) between the
MCO and the absolute encoder.
NOTICE
This parameter is only visible when parameter 32-02
Absolute Protocol is not set to [0] None.
32-09 Encoder Monitoring
Monitoring of open-circuit and short-circuit of the encoder inputs
can be enabled or disabled.
An encoder error issues fault code 192.
Option:
[0]
Off
*
[1]
3 channels
[2]
2 channels
32-10 Rotational Direction
Normally, a positive reference value initiates a positive change of
the position. If not, the reference value can be reversed
internally.
Option:
Function:
[1]
No action
No change. Positive reference values
*
produce positive encoder values.
[2]
Reference
The sign of the reference value is
reversed
reversed internally (plus becomes minus
and vice-versa). This is equal to a reversal
of the motor cables, or a transposition of
the A and B tracks on the encoder.
[3]
User Units
The sign of the user unit is reversed.
reversed (–1)
Thus, positive reference values produce
positive encoder values which are
indicated as negative values, however.
This applies to all outputs (parameters
34-50 Actual Position, 34-51 Commanded
Position, ...), all user inputs (parameter
19-24 Index Target Position, ...), and all
synchronization factors, as well as the
velocities (parameter 33-03 Velocity of
Home Motion).
-9
seconds) per meter. Specify
Function:
Hardware monitoring is not
required.
All 3 channels (A, B, and
Index) are monitored.
Channels A and B are
monitored.
MG33R302

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