9 - 2

Stepping driver

JW-12PS

Encoder (PG)

[2] Mode 1

In this mode, errors are monitored according to the feedback data. An error is judged to stop

operation when the coordinate value according to the output pulse and the coordinate value

captured from the encoder have exceeded a fixed value (closed loop control allowable range).

(Errors are monitored at all times during operation.)

When output of all instruction pulses is completed and then positioning does not fall within the

completion pulse allowable range within the positioning monitoring time, the completion range error

(017) is output and operation is stopped. Note, however, that when the completion signal was set to

"enabled," the completion pulse allowable range is ignored, and judgment as to whether or not

positioning completed by the completion signal is performed. (See the list relating to various setting

values and operations.)

In this mode, compensation is not performed even if a shift occurs in the instruction value and

feedback value.

This mode is used mainly for judgment as to whether the stepping motor is out of sync. Set the

closed loop allowable range in instruction pulse control units.

(Note) When judging whether the stepping motor is output of sync, set the closed loop control

allowable range to 1/50 or more of the maximum instruction speed. For example, when the

maximum instruction speed is 50 kpps, the closed loop control allowable range must be set

to 1000 pulses or more.

In systems that use a servo, normally, deviation is judged on the driver side. So, set the

closed loop control allowable range to "0". When this range is set to "0", only the allowable

range at completion is monitored in this mode.

Example

When the closed loop control allowable range is set to 500 and the completion pulse allowable

range is set to 50, 5000 pulses is being output while JW-12PS is operating, the number of pulses

from the encoder has fallen to 4500 or less.

An error (error 017) is also judged and an error is output when 10000 pulses are output as the

instruction value at the final coordinate, operation ends, and the feedback pulse is 9950 or less.

• Set the ratio between the number of instruction pulses and number of feedback pulses from the

encoder in parameters in advance.

1 2 ... 153 154 155 156 157 158 159 160 161 162 163 ... 234 235

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Table des matières

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Thermostat

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INSTALLING THE THERMOSTAT

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HG for a gas

Note: In

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5-wire Heat/Cool System

WIRING DIAGRAMS

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