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3.0 USER SUPPLIED LINEAR SLIDE INSTALLATION
3.1
LOCATION
The WOC-2 controller should be located near the stepper drive motor it is controlling. The maximum
motor drive cable length is 75 ft. Mount the WOC-2 controller in a location that allows easy access to
the front and rear panel. Figure 3-1 shows the mounting pattern for the control enclosure.
3.2
CABLES
Connect a suitable source of 115-vac power to the power input connector using a power cable. Refer
to Appendix A for power cable connection information for the power cable assembly. Connect the
stepper motor drive cable (CWT P/N S3W5034) to the motor connector on the rear panel. The
maximum motor cable length is 75 ft. Refer to Appendix A for motor control cable connection
information. Connect the operator pendant cable to the COMM connector on the rear panel.
If the controller is being used with an external Master Modbus Controller in place of the operator hand
pendant then connect the RS-485 cable to the RS-485 COMM connector on the rear panel. Connect
the other end of the cable to the Modbus Master RS-485 serial port. (Note: See section 4.0 for Modbus
Communications Information)
3.3
CONTROLLER SETUP
If the WOC-2 controller is being used with a CWT slide or stepper motor no modification of the control
parameters are required. If the controller is being used with a different stepper motor, the user must set
the controller output current before activating the servo drive power. The factory default motor current
will be set to 2.0 amps when shipped from the factory.
Warning: Operating the WOC-2 with excessive motor current levels will result in permanent
damage to the stepper motor. Verify the proper operating current for the stepper motor before
operating the WOC-2 controller.
3.5
LIMIT SWITCH INPUTS
The WOC-2 provides two limit switch inputs, which are used to prevent over driving the mechanical slide
assembly and to establish a home position. Upon power up the WOC-2 will drive to the CCW limit
switch and initialize the step indexes position counter to 1. The CWT torch slide assemblies provide
two Hall Effect limit switches for CW and CCW. When using other slide assemblies it is recommended
that limit switches should be installed. The limit switch inputs are 5.0 vdc TTL input and are active low.
The WOC-2 provides a 4.7K-ohm pull up to an internal 5-vdc source for each limit switch input. A +5
vdc source is also provided to power a HALL-EFFECT sensor limit switch. The following is an example
of interfacing to the WOC-2 limit switch inputs:
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