Dionex ICS-3000 - Low-Pressure Valves

2 • DC Description
Doc. 065031-04 1/08 75
Valve port connections to chromatography components vary, depending
on the application. Refer to Chapter 3
for the configuration schematic for
your application.
Valves are controlled by Chromeleon or Chromeleon Xpress (see
Section 2.17.3
).
2.17.2 Low-Pressure Valves
Up to two low-pressure valves can be mounted on an AM. The valves are
either two-way or three-way valves. The two-way valves provide on/off
control of liquid flow in one direction, while the three-way valves provide
on/off control in two directions (see Figure 2-40
).
Valve port connections to chromatography components vary, depending
on the application. Refer to Chapter 3
for the system flow schematic for
your application.
Valves are controlled by Chromeleon or Chromeleon Xpress (see
Section 2.17.3
).
Figure 2-40. Three-Way Low-Pressure Valve Flow Schematics
COM
0
1
(N.O.)
(N.C.)
O
FF P
OS
ITI
O
N
COM
0
1
(N.O.)
(N.C.)
O
N P
OS
ITI
O
N
N.C. = normally closed
N.O. = normally open
COM = common flow
Note:
When the valve is
off (i.e., it is not
energized), port 0 is
open (N.O.) and port
1 is closed (N.C.).
Conversely,
port
1 is open and port 0
is closed.
when
the valve is on,