Inficon 550-300A, Operating Manual

Page: 31 / 128

Installation
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Using the jumpers XT1 or XT2, Earth or 24 V can be connected to the RS232 inter-
face by changing the positions of the jumper (Pin 2 and 3). On delivery: XT1 or XT2,
Pin 1 and 2 bridged
#
"default setting (Standard) RS232“.
The jumpers are located on the interface board and are accessible after opening the
cover.
Pin Assignment
1
24V can tied-in via the jumper XT2, maximum current consumption 0.3 A (Pin 2
and 3 connected). As delivered, 24 V are not tied-in, Pin 1 and 2 connected.
2 TxD
3 RxD
4
GND 24 V can be tied-in via jumper XT1 (Pin 2 and 3 connected). On delivery,
GND 24 V is not tied-in (Pin 1 and 2 connected).
5 GND RS232
6 not used
7 not used
8 not used
9 not used
STOP
Danger
Danger of fatal injuries due to electric shock!
First, disconnect the leak test device from the power supply network and then
remove the housing.
Fig. 4-3 Jumper XT2 and XT1
Item Description
1 Pin 1
2 Pin 2
3 Pin 3