INFICON STC-2000A Thin Film Deposition Controller Operating Manual - Manual (Page 151)

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STC-2000A DEPOSITION CONTROLLER
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operation requires the user to supply a separate 5VDC bias, which is not grounded to the STC-2000A unit.
Do not exceed 45 Volts peak on any inputs or damage may occur. Ensure that the proper polarity is
applied to each input.
The function of each input is user definable and programmable. However, the first four
inputs are pre-programmed at the factory per the following table. Any input may be
reprogrammed or deprogrammed as needed. The pin numbers refer to the contact on the
25 pin D-subminiature female Optocoupler Inputs connector. (See Input Card Options above)
Input No. (+) Input Pin No.
(JP1 commons)
(-) Input Pin No.
(cathodes)
Function
(preprogrammed in I/O program)
1 2 14 Start
2 16 3 Stop
3 5 17 Final Thickness Trigger
4 19 6 Zero Thickness
5 8 20 User Defined
6 22 9 User Defined
7 11 23 User Defined
8 25 12 User Defined
Digital ground (DG) is on pin 13. External power (User supplied voltage, [Vext]) can be applied to pin 1.
If an optional external isolated power supply is utilized, it can be applied on the Optocoupler Input
connector, pin 1 with the RETURN either negative for isolated or using pin 13 for non-
isolated systems. This supply should be limited to 1.0 Amp total output current.
Hookups to the optocoupler inputs are facilitated with two pin arrays, JP1 and JP2,
which are right angle mounted on the edge of the Input Module PC-board and accessible
by removal of the top cover. JP1 is a 3 by 8 pin array and JP2 is a 3 pin inline array.
Connection choices are made with 2 pin shorting blocks, as determined by the user for a
particular application. Figure 3.3 shows examples of shorting pin locations, which are
required to accommodate the various activation methods.
Input Connections
and Functions
Input PCB Card:
Optional External
Power Supply
Connections
SECTION 4.XX page 151 of 292