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3.2Setting User Constants According to Host Controller

3.2.11 Using the Reference Pulse Input Filter Selection Function

For position control (SGDA-

jjj

P) only.

1) Outline

This function selects a reference pulse input filter inside the Servopack according to the

output form of reference pulses from the host controller.

2) How to Use Reference Pulse Input Filter

Set the following memory switch according to the output form of reference pulses from

the host controller:

Cn-02 Bit F

Reference Pulse Input Filter

Selection Function

Factory

Setting: 0

For Position Control Only

Sets the memory switch according to the output form (line driver or open collector) of ref-

erence pulses from the host controller.

Setting Meaning

Output form of reference pulses from host controller: Line driver output (maximum

frequency of reference pulse: 450 kpps)

Output form of reference pulses from host controller: Open collector output

(maximum frequency of reference pulse: 200 kpps)

• For open collector output, the wire length must be as short as possible (maximum 3 m).

Note Even if the open collector output is used, if frequency of reference pulse exceeds

200 kpps, reference pulses may be miscounted (resulting in wrong positioning)

due to noise. If over 200 kpps reference pulses are output, make sure to set bit F

of Cn−02 to 0.

SGDA- P

Positions

YASKAWA SGDA series User Manual

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