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Transfer Elevator Motor Control Circuit
The transfer elevator motor is controlled by the circuit shown in Figure 3–28.
When the transfer guide is to be raised
After being set (in direction) to Up, the motor is driven by the START signal. When
the upper limit is detected, the TUPOS signal changes and the driving transistor is
turned off, simultaneously causing the motor to be grounded at both ends and to be
braked by short-circuiting.
The START signal is turned off after the CPU confirms that the upper limit sensor
(TUUL) has turned on.
When the transfer guide is to be lowered
As in the case of raising, the motor is driven by the START signal after being set (in
direction) to Down. When the lower limit is detected, the TUPOS signal changes and
the driving transistor is turned off, simultaneously causing the motor to be grounded
at both ends and to be braked by short-circuiting.
Electrical System and Adjustments
3–49
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