Danfoss MCO 351, Руководство по эксплуатации, Страница: 32 / 58

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: Function:
[0] 600 Baud
[1] 1200
[2] 2400
[3] 4800
[4]
*
9600
[5] 19200
[6] 38400
32-05 Absolute Encoder Data Length
Range: Function:
25
*
[8-37 Bit] Specify the number of data bits for the
connected absolute encoder, see encoder
datasheet. This is required for the MCO to
generate the correct number of clock bits.
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: Function:
262.000
*
[78.124–
2000.000 kHz] Specifies the frequency of the
absolute encoder clock signal
generated by the MCO. Set a
frequency appropriate for the
connected encoder.
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.
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
m] The absolute encoder (SSI) clock and data signals
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
-9 seconds) per meter. Specify
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: Function:
[0]
*
Off Hardware monitoring is not
required.
[1] 3 channels All 3 channels (A, B, and
Index) are monitored.
[2] 2 channels Channels A and B are
monitored.
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
reversed The sign of the reference value is
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
reversed (–1) The sign of the user unit is reversed.
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 ).
Commissioning Operating Instructions
30 Danfoss A/S © 04/2014 All rights reserved. MG33R302
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