Parker AC890PX Series, Engineering Reference

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A p p e n d i x D : P r o g r a m m i n g
D-113
AC890PX AC Drive
REFERNCE ENCODER
SETUP::MOTOR CONTROL::REFERNCE ENCODER
This block is used to set up how the reference encoder input is obtained, via the Reference Encoder Speed Feedback Option Card. This option card
can be fitted to the control board in either position, upper or lower. The drive must be capable of using the High Performance blocks found in the
DSE 890 Configuration Tool.
Various encoder types may be selected (including pulse encoder, sincos encoder and absolute single-turn or multi-turn) and require different
hardware options. If an encoder type is selected which does not match the hardware, an error will be flagged.
The reference encoder input will normally be used to make the drive precisely follow an external reference. This is done in conjunction with the
VIRTUAL MASTER function block. The Firewire mode must first be selected. The parameter VIRTUAL MASTER :: SOURCE should be set to
REFERNCE ENCODER. The virtual master output will then be equal to the reference encoder input.
Parameter Descriptions
PULSE ENC VOLTS PREF: 158.01 Default: 10.0 V Range: 10.0 to 20.0 V
Set this approximately to the supply voltage required by the pulse encoder.
SINCOS ENC VOLTS
PREF: 158.22 Default: 5.0 V Range: See below
Used to set the supply volts required by the sin/cos encoder.
Enumerated Value : SinCos Encoder Volts
0 : 5V
1 : 10V
ENCODER LINES PREF: 158.02 Default: 2048 Range: 250 to 262143
The number of lines must be set to match the type of encoder being used. Incorrect setting of this parameter will result in an erroneous speed
measurement.