2 Install the e2695 Separations Module
74 July 29, 2013, 715003794 Rev. B
Event switches
Switches 1 through 4 on connector A can serve as contact-closure switches to
control column selection valves, fraction collectors, or similar external devices.
Each pair of switch terminals (the two switch 1 terminals, for example)
connects to an external device. You can operate the switches in either of two
ways:
• Manually, from the Status screen
• Automatically, in a separation method using the timed table in the I/O
screen
See “Set I/O parameter values” on page 162 for information on using switches
in an automated run.
The following table describes the functions associated with each position of an
event switch.
Primary head
pressure
–344.7 kPa (–3.45 bar, –50
psi)
34473.8 kPa (344.7 bar, 5000
1
psi)
Composition 0.0 percent 100.0 percent
Sample
temperature
4 °C 40 °C
Column
temperature
20 °C 60 °C
Degasser
vacuum
(absolute)
0.0 psi 68.9 kPa (0.7 bar, 10.0 psi)
1. Although the chart out signal for pressure is scaled (and displayed) to 5500 psi, the
maximum operating pressure of the separations module is 34473.8 kPa (344.7 bar, 5000 psi).
Event switch positions and functions:
Position Function
On Closes the switch
Off Opens the switch
Chart out signal conditions: (Continued)
Signal
Parameter setting at 0
volts (minimum)
Parameter setting at 2.000
volts (maximum)
To Next Page
Loading...
