Electronics MC - Manual (Page 11)

H:\MANUALS\IM0049C.DOC Installation Manual Model MC Shot Flow Controller 11 of 12
Excitation Voltage +/- 12 Vdc @ 100 mAmp
Reference Voltage + 10.00 Vdc @ 10 mAmp
Weight: 4 Lbs. (1.8 Kg)
Modify Input Range
The standard input range for remote command is 0 -10 Vdc. Some applications have only a 0 - 5 Vdc
signal available from the PLC. The MC controller can accommodate this range of signal by making the
following adjustments.
1. This procedure requires the controller valve output to be exercised. If valve operation would cause a
problem flooding the wheel then either remove the wires to the MagnaValve or close the service slide
gate above the MagnaValve. The wheel does not need to be rotating for this conversion procedure.
2. Use a “battery box” or other suitable source of 5 Vdc applied to the remote command input terminal
(#10) and apply 5.0 Vdc to the controller (terminal #9 is circuit common).
3. Place the mode switch in the “on” position. The red LED for “valve” should be blinking.
4. Adjust the “Amplitude” control until the LED is constantly “on” for 100% duty cycle.
5. Apply 0 Vdc to the input and verify that the red LED stays off. If necessary, adjust the “Bias”
control.
6. The red LED should now operate as follows:
a. 0.0 Vdc input = red LED off
b. 0.1 Vdc = red LED blinking at low duty cycle
c. 4.9 Vdc = red LED blinking at high duty cycle
d. 5.0 Vdc = red LED constantly on
7. CAUTION: The front panel set pot on the MC controller will now only function over half of its
range. The full output will be achieved at 5-turns instead of the full range 10-turns of the set pot.