Appendix c. i/o connections – INFICON SQC-122 Thin Film Deposition Controller Operating Manual User Manual
Page 62

Appendix
C. I/O Connections
Two 15-pin D-sub connectors, located on the rear of the SQC-122, provide Input/Output
connections.
Relay I/O Connectors
Inputs can be activated either by connecting to a switch and shorting to Ground, or they
can be driven by a TTL compatible signal.
W
ARNING
: These are not isolated inputs! The voltage level applied must be limited to
between 0 and +5 volts with respect to Ground.
W
ARNING
: Output relays are rated for 30Vrms or 30VDC, at 2A maximum. Proper
fusing, and adequate wiring insulation and separation, should be provided to assure
these limits are not exceeded.
Relay I/O 1-4
Relay I/O 5-8
Pins
Connection
Pins
Connection
1,2
Relay 1
1,2
Relay 5
3,4
Relay 2
3,4
Relay 6
5,6
Relay 3
5,6
Relay 7
7,8
Relay 4
7,8
Relay 8
9
Input 1
9
Input 5
10
Input 2
10
Input 6
11
Input 3
11
Input 7
12
Input 4
12
Input 8
13,14,15
Ground
13,14,15
Ground
Refer to Sections 3.6 for relay and input definitions.
1
8
9
15
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