REMOTE/AUTOMATED CONTROL 6-9
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Copyright © 2010 by Kaufman & Robinson, Inc., 1306 Blue Spruce Drive, Unit A, Fort Collins, CO 80524
Tel: 970-495-0187, Fax: 970-484-9350, Internet: www.ionsources.com
Pin
Number
Description
31
Channel 4 setpoint. 0-5 volts corresponds with 0 to the maximum out-
put for the MFC connected to Channel 4. Referenced to pin 13. output
for the MFC connected to Channel 4. Referenced to pin 13.
32
Gas Channel 1 shut off. Connecting this pin to common pin 7 or 8 will
disable the gas
fl
ow to the MFC and deactivate the additional MFC
relay for channel 1, regardless of the input
fl
ow setting.
33
Gas Channel 2 shut off. Connecting this pin to common pin 7 or 8 will
disable the gas
fl
ow to the MFC and deactivate the additional MFC
relay for channel 2, regardless of the input
fl
ow setting.
34
Program Select 1. This pin is the 1 bit for selecting programs 1 through
4 using negative logic levels of 0 and 5 volts
35
No Contact or Multiple Function. See set up in appendix
36
DB-37 Remote Enable. Enables the auto controller if control select pin
18 is connected to common pin 7 or 8.
37
Keeper current output. 0-5 volts corresponds with 0-2 amps. Referenced
to common pin 7 or 8.
6.3 Interlock
A two-pin interlock is located on the rear panel. The interlock pins must be
shorted to allow operation of the Auto Controller. When the interlock pins are
open, the auto controller remains in Standby and the Auto Controller display
says Int Loc. The red Open Interlock indicators on the front panels of the power
supplies are also on when the Auto Controller interlock is open if there is an
RS-485 communication link. The interlock pin descriptions are given below in
table 6-6.
Note that the interlock for the Auto Controller does not open the interlocks for
the keeper, emission and discharge power supplies when the Auto controller
is in the Gas Only mode or when it is turned off. In these cases, the power
supplies function as independent units. These power supplies each have in-
terlocks that prevent operation if the two interlock pins are not closed. The pin
descriptions are the same as the interlock for the Auto Controller, but the pins
are reversed on the Power Supply.
The four interlocks for the Auto Control-
ler, Keeper Power Supply, Emission Power Supply and Discharge Power
Supply must all be used to prevent operation for all contingencies.
