Digital I/O - Thermo Scientific Vanquish VC-D40 Operating Manual

11 • Appendix

11.3 Digital I/O

Pin Assignment
Pin Wire Color
1 Pink
2 Gray
3 Green
Page 166
The digital I/O ports (Dig I/O) can be used to exchange digital signals
with external devices. Each port provides:
• one digital input
• one relay output
Figure 33: Digital I/O port
Pin Description
1 Not used
2 Relay output — Relay_NC (Normally Closed contact)
3 Ground — GND
4 Digital input — Input
5 Relay output — Relay_COM
COM is the common contact for NO and NC. If the relay is not activated or if
the device is turned off, the connection is between COM and NC. If the relay
is activated, the connection is between COM and NO.
6 Relay output — Relay_NO (Normally Open contact)
The next table lists the functions assigned to the connector pins and the
color of the cable wire connected to each pin.
Signal Name Signal Level
Relay output Potential free
— Relay_NC 0-24 V, 0-100 mA
Ground — Ground
GND
Remarks
Not used
Opening contact
Reference potential
Variable Wavelength Detectors (VC-D40, VF-D40)
Operating Manual