INFICON STC-2002 Thin Film Deposition Controller Operating Manual - Manual (Page 145)

p STC-2002 DEPOSITION CONTROLLER y
SECTION 4.XX e page 143 of 276 ^
I/O Interface
Input Card Options: An opto-isolated input card can be configured in a number of ways. Inputs can be
isolated or non-isolated, internally powered or externally powered (individually or as a group). Jumpers on
the input card are used to make the selections. All of the opto-coupler LED cathodes are brought out to the
25 pin D-sub female (i.e. pins 3,6,9,12,14,17,20,23
[(-) Input Pins] ). The opto-coupler LED anodes are
brought into a jumper header (JP1) where each of the anodes can either be routed to a voltage source or
sent out to the 25 pin D-sub female (i.e. pins 2,5,8,11,16,19,22,25
[(+) Input Pins] ). The voltage source itself
is further selectable on a separate 3 pin jumper header (JP2) such that an internal voltage (+5VDC) can be
selected or an external voltage can be selected (connects to pin 1 of the 25 pin D-sub female). The voltage
source, regardless of the JP2 selection, can therefore be applied to any or all of the anodes when JP1 selects
the voltage source. Any one or more of the anodes can be alternately routed through JP1 to keep them
isolated from the other anodes and the voltage source. Jumpers can short from the center pin position to
one of the two outer pins (in each of the eight JP1 segments). Since there are 8 anodes, there are also 8 JP1
sections. The depiction below is a generalization of a single LED input (1 of 8). JP2 is a single 3 pin
position selector. [Section 4.8 has more details]
cathode D-sub [(-) Input Pins, 1 of 8]
JP1
D-sub [(+) Input Pins, 1 of 8]
anode JP1 has 8 of these 3 pin selectors
int. pwr.
(+5 vdc.)
JP2
JP2 is a 3 pin selector that distributes its center pin to the 8 sections of JP1
D-sub
(pin 1 only) ext. pwr. DC volts 3.5 to 40 volts, AC volts 5 to 30 Volts rms
dig. gnd. D-sub (pin 13 only)
The standard I/O INTERFACE of the STC-2002 is comprised of 8 opto-coupled inputs (electrically
isolated) on one PCB card and 8 Form C relay outputs on another PCB. The factory default I/O program,
which is described in Section 5.15, utilizes the factory programmed defaults which configures the first 4
inputs (1-4) and 4 relay outputs (1-4) to perform functions which suit a majority of deposition
requirements. These are described in sections below. The additional 4 inputs (5-8) and 4 outputs (5-8) are
not programmed at the factory. If the factory I/O program as shown in Section 5.15 is altered or
deleted these functions may not occur as described in the Sections 3.6 and 3.7. A full description
of I/O programming is given in Section 5 of this manual.
The
OPTOCOUPLER INPUTS connector provides the user an isolated interface to 8 inputs
from user equipment. These inputs can be activated in several ways, depending on user accessible
connection options, the following choices are available; DC voltage between 3.5 and 40 volts,
AC voltage from 5 to 30 Volts rms, NPN transistor open collector or contact closure, logic
level 3.5 Volts or greater. For non-isolated applications the user can choose to use an
internally supplied 5VDC bias voltage for the open collector or contact closure activation
method. Isolated open collector operation requires the user to supply a separate 5VDC bias, which is not
SECTION 4.8
Input Ratings