Thermo Scientific Dionex ICS-1100, Operator'S Manual

Page: 139 / 168

Doc. 065289-03 10/12
129
B • TTL and Relay Control
B.1 TTL and Relay Connections
A 12-pin connector strip for TTL/relay control is located on the Dionex ICS-1100
rear panel. The connector provides two relay outputs, two TTL outputs, and four
TTL inputs (see
Figure B-1 ).
NOTE TTL 1 Input - Inject/Load applies only to the injection
valve (not to the auxiliary valve, if installed).
Figure B-1. TTL and Relay Connector on Rear Panel
Relay loads in excess of 200 mA or with included power supplies over
60 V may damage the relay drivers on the CPU.
1
2
OUT
RELAY
(+)
TTL OUT
1
2
TTL GND
(-)
1
2
3
4
TTL IN
(+)
1
2
1
2
Description
Solid State Relay Contacts Output
Pin Function
3
4
Solid State Relay Contacts Output
TTL Output 1 (1 k pull up to +5, 100 mA sink)

5
TTL Output 2 (1 k pull up to +5, 100 mA sink)

6
7
8
9
10
11
12
Ground
Ground
TTL Input 2

Autozero
TTL Input 3 Pump/Suppressor On

TTL Input 4 Mark

Note: The TTL input
functions can be reassigned
to different inputs.
Connector
Position
TTL Input 1

Inject/Load