OJ Electronics OJ-HMI Instructions page 7

OJ-HMI
About the control
Here you can view information on
software versions.
INSTALLATION
OJ-AIR2-HMI-35T can be installed in two ways: either in a wall
box/panel front or directly on a flat surface.
Installation on flat surface
The back cover of the HMI is equipped with a keyhole-shaped
opening which can be used to hang the unit on a flat surface
(see Fig. 1). Use a screw that is max. 3.5 mm in diameter with a
head no larger than 9 mm.
Installation in wall box/panel front
If OJ-AIR2-HMI-35T is to be installed in a wall box or panel front,
the back cover must be removed. Firstly, the front cover must be
detached by gently releasing the catch on the bottom of the unit
with a flat screwdriver and then tipping the cover outwards
(see Fig. 2).
Once the front cover has been detached, the two screws holding
the back cover in place can be removed (see fig. 3).
The back cover can now be detached and the front cover refitted.
The baseplate is equipped with several screw holes. The dimen-
sioned drawing (see fig. 4) can be used as a drilling template.
The baseplate should be secured with at least two screws tight-
ened to a torque of max. 0.8 Nm.
Installation depth is 20 mm.
12 © 2015 OJ Electronics A/S
English OJ-HMI
MODBUS CONNECTION
OJ-AIR2-HMI-35T is connected to the OJ-Air2 Master by means of
a Modbus cable. The Modbus cable can be connected to the OJ-
AIR2-HMI-35T by means of the RJ12 6P4C port or four single-wire
screw terminals. Whether the RJ12 6P4C port or screw terminals
are used does not influence the available functions or operation.
Modbus RJ12 6P4C
Connect the Modbus cable to the Modbus port for a hand terminal
on the OJ-Air2 Master and to the RJ12 6P4C port on the OJ-AIR2-
HMI-35T (see fig. 5).
Modbus screw terminals
Connect the Modbus cable to the Modbus port for a hand terminal
on the OJ-Air2 Master and to the corresponding screw terminals
on the OJ-AIR2-HMI-35T (see fig. 6).
RJ12
1
2
3
4
5
6
TECHNICAL DATA
Supply voltage ........................................................24 V DC +/-10%
Cable dimensions ............................................. 10 x max. 0.75 mm²
Relative humidity ...................................... 0-95% (non-condensing)
Operating temperature .....................................................-10/+40°C
Enclosure rating .......................................................IP21 (EN 60529)
Port ........................................................................... 1 x RJ12 6P4C
......................................................................... 10 x screw terminals
Dimensions ............................................. 80x121x42 mm (see fig. 2)
Installation depth ................................................................... 22 mm
Max. power consumption .................................................... 900 mW
Standby power consumption ............................................. 600 mW
Screw terminals
+24 V
GND (earth)
Bus "B"
Bus "A"
+24 V
GND (earth)
© 2015 OJ Electronics A/S © 2015 OJ Electronics A/S
English
13