Installation and user manual
UNICOM 300 N531
DDN5006GHEN/04-2021/rev.B1
14
Output
Terminal
number
Name
Function
Pulse
11
Pulse out 2
connection for pulse output 2
10
GND
Ground for pulse out cable
9
Pulse out 1
connection for pulse output 1
Table 1: Connections outputs
Input
Terminal
number
Name
Function
Wigersma & Sikkema
cable color coding
Power supply
UNIGAS 300
CON202
+
+ power supply for UNIGAS 300
Yellow
-
- power supply for UNIGAS 300
Grey
Serial
8
REQ
Serial data to
UNIGAS EVCD
White
7
GND/SHIELD
Ground/shield data cable
Black / Green
6
DATA
Serial data from
UNIGAS EVCD
Brown
Pulse
5
GND/SHIELD
Combined cable ground and
shield for pulse cable
Green
4
PULSE 2
connection for pulse input 2
White
3
PULSE 1
connection for pulse input 1
Brown
Encoder
2
NAMUR - /
GND
Connection for Encoder
-
1
NAMUR +
Connection for Encoder
-
Table 2: connections inputs
See Appendix 3 for connection diagrams for UNICOM 300 - UNIGAS 300.
In order to make a good connection between the threaded ends and the connection terminals
(see Figure 7, 1 and 7, 2), it is important to ensure that the connection terminals are first fully
unscrewed. Then insert the threaded end and tighten the terminals. Check that the threaded end
is properly connected.
A different color coding for the serial wire connection may apply for UNIGAS (see Appendix 5).
4.11 Function switches mains operated UNICOM 300
Switch
Switch
operation
Function
optical head detection
-
Optical head placed;
Status LEDs and optical head detection are activated.
SW1
(MODEM function)
For at least 4
seconds
Modem is turned on; 30 minutes service window is opened. If
modem is on, it is switched off and on again. Status LED’s
are activated during the service window.
To start the device INIT function, switch SW1 must remain
pressed until the INIT LED blinks once every 4 seconds. After
that, SW1 can be released and the initialization will be carried
out further. See also 5.2.
SW1
(MODEM function)
For 1 second
NOTE! Functionality available from firmware version 11.0.21.
Optical head and status LEDs are activated for 30 minutes.
SW3
(MODEM function)
For at least 4
seconds
Resetting the battery consumption counter of the backup
battery. Reset the power supply type. When changing the
power supply configuration, SW3 must be pressed for at least
4 seconds for a new initialization
Status LED INIT will be on for 10 seconds.
SW1 & SW3
(MODEM function)
For at least 4
seconds
Stock lock activation
After activating stock lock, the status LED will start for 10
seconds. This is independent of state SW1 / SW2.
Table 3: function switches (Modem)
