I/O signal connectors
January 11, 2016, 715004599 Rev. B 251
I/O signal connectors
The instrument’s rear panel includes two removable connectors that hold the screw
terminals for I/O signals. These connectors are keyed so that they can receive a signal
cable inserted only one way.
I/O signal connectors:
Warning: To avoid electric shock, separate all electrical connections to the rear
panel from hazardous voltages by double or reinforced insulation. Circuits of this
type are classified as safety extra low voltage (SELV). Examples of circuits that are
typically SELV include contact closure inputs and outputs for autosamplers, and
UV, RI, and fluorescence detector signal outputs for LC/MS systems. The electrical
connections on the rear panel of this mass spectrometer are all SELV.
To avoid electric shock and damage to the instrument, do not apply more than,
• ±30 V d.c. to the Analog (Out) connection.
• 30 V d.c. to the Stop Flow (Out), Inject Start (In), Switch 2 (Out), Switch 3
(Out), and Switch 4 (Out) connections.
1
2
3
4
5
6
7
8
9
10
+
−
+
−
Analog (Out)
Analog (Out)
Ground
Not Used
Not Used
Stop Flow (Out)
Stop Flow (Out)
Ground
Switch 2 (Out)
Switch 2 (Out)
Connector I
1
2
3
4
5
6
7
8
9
10
+
−
+
−
+
−
+
−
Inject Start (In)
Inject Start (In)
Ground
Event (In)
Event (In)
Switch 3 (Out)
Switch 3 (Out)
Ground
Switch 4 (Out)
Switch 4 (Out)
Connector II
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