Wigersma & Sikkema UNIGAS 300, Инструкция по установке, эксплуатации и обслуживанию

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Installation, operating and maintenance manual UNIGAS 300
DDG6004MHGB/08-2017/Rev.A2 Software version from M 1.3.40 and D 2.3.37 16
The inputs are numbered successively from 1 to 12 and the outputs are numbered from 13 to 18. The
numbers and references are stated at the terminals.
Inputs
1 NAMUR – – connection for NAMUR sensor and encoder counter
2 NAMUR + + connection for NAMUR sensor and encoder counter
3 GND common earth for LF sensor
4 LF 1 + connection for LF input 1
5 LF 2 + connection for LF input 2
6 LF 3 + connection for LF input 3
7 GND common earth for LF sensor
8 ALARM 1 alarm input 1, normally closed switch or transistor
9 GND ALARM common earth for ALARM 1 and 2
10 ALARM 2 alarm input 2, normally closed switch or transistor
11 EXT – – connection for external power supply 6 – 10 V
12 EXT + + connection for external power supply 6 – 10 V
When UNIGAS 300 is externally powered by a power supply of a different manufacturer, following
demands must be observed. If an external power supply is used, in which the minus connection to
UNIGAS 300 is connected to a ground, the casing of UNIGAS 300 must be connected to the same
ground with an as short as possible connection. Same measures must be taken for the installation to which
the temperature and pressure sensor of UNIGAS 300 will be connected.
In general, the use of an external power supply with galvanic separation is strongly recommended.
Outputs
13 ALARM OUT 2 alarm output 2
14 GND ALARM common earth for ALARM OUT 1 and 2
15 ALARM OUT 1 alarm output 1
16 PULSE OUT 2 impulse output 2
17 GND PULSE common earth for PULSE OUT 1 and 2
18 PULSE OUT 1 impulse output 1
For electrical data of the pulse and alarm outputs, see chapter 11.
4.3 Connecting a gas meter with encoder output
Gas meters with encoder output with NAMUR interface fabricated by Itron, GWF, Elster, Dresser, FMG or
Aerzener can be used. The UNITOOL software can be used to set input 1 for encoder input.
Before the encoder is connected, counter Vm1 (or Vm2 in the event the encoder input is used for
checking impulse input 1) must be configured at a value that matches the value on the encoder
counter.
If the above action is not performed, UNIGAS 300 will start converting the difference between the encoder
counter and the UNIGAS 300 counter at the first measuring interval.
If an encoder is connected while the counter reading is lower than the counter value in UNIGAS 300, UNIGAS
300 will not take over the encoder counter reading. A status message of that event will be set in status register
1.
If the encoder counter decreases, the counter reading will not be taken over by UNIGAS 300. A status message
of that event will be set in status register 1. If the decrease is temporary, UNIGAS 300 will take over it as soon
as it has become larger than the last counter reading that had been taken over. The decrease is not recorded
in any error counter.