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Dionex VWD Operator's Manual
Pin
Signal Name
6
Digital out relay 1
(port A)
Digital out relay 2
(port B)
8
Digital out relay
common
Table B-1. Digital I/O Ports A and B Pin and Cable Wire Assignments (Continued)
NOTE There is no connection between Digital out relay
The maximum switching voltage of the relays is 24V. The switching
current must not exceed 100 mA. The differential voltage between
Digital in plus and Digital in common must not exceed 10V.
1. Locate the 6-pin mini-DIN cable (P/N 6074.0001) provided in the
Dionex VWD Ship Kit (P/N 064787).
2. Plug the cable's 6-pin connector into Digital I/O port A (or B).
3. For each relay output or TTL input to be used, connect the
appropriate signal wire and ground wire to the corresponding
connectors on the external device. Refer to the documentation
provided with the external device for instructions.
4. When configuring the Dionex VWD in the Instrument Configuration
program (Chromeleon 7) or Server Configuration program
(Chromeleon 6.8) (see
relay output and/or TTL input on the Relays and/or Inputs tab page
of the Properties dialog box.
B.7 Installing the Analog Outputs (Optional)
An optional DAC plug-in module (P/N 066349) (see
Thermo Scientific. When the module is installed, two analog outputs with a
resolution of 20 bits each are available on the Dionex VWD rear panel. The
analog outputs supply a voltage signal proportional to the current measured by the
detector cell. The outputs can be connected to an analog-to-digital (A/D)
90
Signal Level
Potential
free
Potential
free
common and Digital in common. They have neither a
conductive connection to protective ground nor to
internal signals in the detector.
Section
Wire Color
Remark
Brown
If the relay is activated, the
connection is between the
Digital out relay and the
Digital out relay common.
White
Common relay contact.
B.11.3), enable the corresponding
Figure
B-8) is available from
Doc. 065377-01 1/12
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