Digitax HD M753 Control User Guide
75
Issue Number: 3
7.6.1
Hardware mode - Incremental signals (AB, FD, or FR)
Hardware mode provides incremental signals derived via hardware from the P1 position feedback interface on the drive, with negligible delay.
The supported incremental output signals are AB, FD and FR. Hardware mode only produces an output when the input device connected to the
P1 position interface is AB, FD, FR, SC, SC Hiperface, SC EnDat or SC SSI type devices. It should be noted that with a SINCOS source device the
output is based on the zero crossings of the sine wave inputs and does not include interpolation.
7.6.2
Software mode - Incremental signals (AB, FD, or FR)
In software mode the encoder simulation output is derived via software from the selected source with a minimum delay of 250
μ
s which may be
extended with
Encoder Simulation Sample Period
(03.087). For incremental output signals, the resolution of the output can be defined by either
selecting the required output lines per revolution or by an output ratio.
Lines per revolution
The output resolution of the encoder simulation output is defined by
Encoder Simulation Output Lines Per Revolution
(03.092).
Hardware mode set-up
Encoder Simulation Source
(03.085)
This parameter must be set to
03.029
to select the P1 position interface as the source.
Encoder Simulation Mode
(03.088)
Set to a value of
Hardware (0)
Encoder Simulation Hardware Divider
(03.089)
This parameter defines the divider ratio between the device connected to the P1 position feedback
interface and the output.
0
= 1/1
1
= 1/2
2
= 1/4
3
= 1/8
4
= 1/16
5
= 1/32
6
= 1/64
7
= 1/128
Encoder Simulation Hardware Marker Lock
(03.090)
0
= The marker output is derived directly from the marker input
1
= The incremental output signals are adjusted on each marker event so that the A and B are high
with an AB type output, or F is high with an FD or FR type output
Encoder Simulation Output Mode
(03.098)
AB/Gray
(0) for a AB quadrature output signals
FD/Binary
(1) for Frequency and Direction output signals
FR/Binary
(2) for Forward and Reverse output signals
AB quadrature output signals, software mode setup – Lines per revolution
Encoder Simulation Source
(03.085)
Set to the parameter number of the position source
Pr
03.029
to use the P1 position interface on the drive as the source.
Pr
03.129
to use the P2 position interface on the drive as the source.
This parameter can be set to any other valid position reference generated by the drive or an option
module.
Encoder Simulation Mode
(03.088)
Set to a value of
Lines Per Rev (1)
Encoder Simulation Output Lines Per
Revolution
(03.092)
Set to the required output lines per revolution. The maximum output lines per revolution are 16384.
Encoder Simulation Output Mode
(03.098)
AB/Gray
(0) for a AB quadrature output signals
Frequency and Direction or Forward and Reverse output signals, software mode setup – Lines per revolution
Encoder Simulation Source
(03.085)
Set to the parameter number of the position source
Pr
03.029
to use the P1 position interface on the drive as the source.
Pr
03.129
to use the P2 position interface on the drive as the source.
This parameter can be set to any other valid position reference generated by the drive or an option
module.
Encoder Simulation Mode
(03.088)
Set to a value of
Lines Per Rev (1)
Encoder Simulation Output Lines Per
Revolution
(03.092)
Set to the required output pulse per revolution divided by 2. For example if 2000 pulses per revolution
is required, set this parameter to 1000.
Encoder Simulation Output Mode
(03.098)
FD/Binary
(1) for Frequency and Direction output signals
FR/Binary
(2) for Forward and Reverse output signals
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