Dionex ICS-3000 - Power, Relay, and TTL Outputs

ICS-3000 Ion Chromatography System
84 Doc. 065031-04 1/08
2.18.3 Power, Relay, and TTL Outputs
The power, relays, and TTL outputs can be used to control functions in
external devices such as an autosampler or another Dionex module.
Depending on which pins are connected, the relay connection can be
either normally open (N.O.) or normally closed (N.C.) (see Figure 2-47
).
Choose N.O. or N.C. based on what you want the state of the connected
device to be when the DC power is turned off. A normally open relay is
open when the relay is switched off and closed when the relay is turned
on. A normally closed relay is closed when the relay is off and is open
when the relay is on.
The relays can be programmed to switch any low-voltage device.
Switched current must be no more than 2 A at 24 VDC. Refer to
Section 2.18.1
and the documentation for the external device for
connection instructions.
Figure 2-47. Relay Output Configuration
RELAY
O
UTPUT
CO
NFI
G
URATI
O
N
The relays are capable of
switching 2 A at 24 VDC.
For a normally open
connection, connect a
COM pin and an N.O. pin.
For a normally closed
connection, connect a
COM pin and an N.C. pin.
N
O
TE
S
N.O.
COM
N.C.
Rear Panel
Pins
Relay Output
(on DC Electronics)
Non-Energized Relay
N.O.
COM
N.C.
Energized Relay