INFICON Ecotec E3000 Multigas-Sniffer-Leak Detector Interface description - Manual (Page 8)

8
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2.1.1 PLC inputs
Technical data PLC
inputs
 24 V nominal input.
– Low level: 0 … 7 V
– High level: 13 … 28 V
Table 1: I/O Port - pin assignment
Pin Signal Notes
2, 3, 18, 19, 21 Ground Ground connectors of the control voltages.
6 +24 V Common output for supplying the PLC inputs and
outputs, internally protected with fuse F4
PLC inputs
7 Sleep (default) Change from low to high to activate.

Change from high to low to deactivate (wake up).
See also technical data and further informations given below.
All PLC inputs can be defined by the user from a list of
commands,
see „2.2.2.1 Define PLC Inputs“, page 12 . 8 Not used (default)
9 Gas a (default) See table „Gas select“
13 Gas b (default) See table „Gas select“
20 Zero (default)
25 Gas select (default) See table „Gas select“
PLC outputs, open collector
4 Ready (default) Signal is LOW as long as the device is ready for
measurements. These PLC outputs are designed as „Open Collector Outputs“.
Please refer to the technical data and the example given below.
All PLC outputs can be defined by the user from a list of
commands,
see „2.2.2.2 Define PLC Outputs“, page 12 .
5 not used (default)
16 Trigger (default) Signal is LOW if the preset trigger level is exceeded.
17 Error (default) Signal is LOW if a warning or error message is active.
PLC outputs, relay
10 Trigger (default) Currentless closed (NC) These PLC outputs are designed as relay outputs. Please refer to
the technical data and and further informations given below.
22 Common
23 Currentless open(NO)
24 Ready (default) Currentless closed (NC)
11 Common
12 Currentless open (NO)
Recorder outputs
1 Leak rate Leak rate in linear or logarithmic scale Please refer to the technical data and and further informations
given below.
14 Gas Selected gas number
Material damage if the input voltage is too high.
A wrong input voltage can destroy the unit.
► Pay attention to the technical data of the PLC inputs: Maximum input voltage is 28 V.