OJ Zone Module and Room Panel with 2" Touchscreen
the OJ Zone Module to the Room Panel must not exceed 50 m
(164 ft) in length.
Mounting the OJ RPT-20T Room Panel
The Room Panel is designed for flush mounting in a hollow wall
box. Use a standard EU size flush mounting box with an installa-
tion opening of 60 mm. A minimum depth of 22 mm is needed. Do
NOT position the Room Panel in direct sunlight or draughts.
CONNECTING
For a description on how to connect various sensors, please refer
to the instructions for the OJ GreenZone™ Module concerned.
Connecting the Room Panel
The Room Panel is connected to the Zone Module by means of a
Modbus cable (straight, no cross-over).
6 .. 1
Modbus
sensor
BR1029A011a
© 2015 OJ Electronics A/S
The Modbus cable can be connected to the Room Panel using
the RJ12 6P6C port (A) or the four designated screw terminals (B).
As the two +24V and two GND terminals are internally connected,
either can be used.
4
RS485 MODBUS
A
B
© 2015 OJ Electronics A/S
English
OJ Zone Module and Room Panel with 2" Touchscreen
Table 1: RJ12 pins
Connecting sensors to the Room Panel
Two sensors can be connected to the Room Panel. It has two
channels with +24V output and 0-10V input.
Table 2: Sensor pins
Channel 1 is reserved for CO
0 ppm and 10V is equal to 2000ppm.
Channel 2 is reserved for humidity sensors where 0V is equal to
0%RH and 10V is equal to 100%RH.
Maximum load for the two channels combined is 200mA.
RJ12
Description
1
+24V
2
GND
3
Bus "B"
4
Bus "A"
5
+24V
6
GND
Sensor
Screw terminal
+24V out
CO
/ VOC
0-10V in
2
GND
+24V out
Humidity
0-10V in
GND
/ VOC sensors where 0V is equal to
2
© 2015 OJ Electronics A/S
English
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