OJ Electronics OJ Drives OJ-DV-HMI-35T User manual

67817A 08/19 (SJR) © 2019 OJ Electronics A/S
QUICK START GUIDE
OJ-DV-HMI-35T
OJ Drives®
A DRIVES PROGRAMME DEDICATED TO VENTILATION SOLUTIONS

© 2019 OJ Electronics A/S 2
Introduction
OJ-DV-HMI-35T is a touchscreen panel with a user-friendly graphical user interface, specially developed
for operating the OJ DV. The panel communicates with the OJ DV via a Modbus interface, ensuring easy
installation.
The OJ-DV-HMI-35T can be used, both as an active + passive modbus connection.
General settings
This quick start guide only describes basic settings. If the screensaver is
active, simply touch the screen once to open the home screen. The home
screen provides access to basic functions such as fan speed, drive type, drive
input power and control type. Any alarm or warning is shown at the top of the
screen. An alarm bell will be visible if an alarm has been activated. A warning
sign will be visible if there is an active warning. Press either the alarm bell or
warning sign to navigate to the alarm/warning list.
Press “Set point” or the setpoint value on the home screen to change the
setpoint value.
The ventilator icon shows if the fan is running or if it has been stopped. Press
the fan icon on the home screen to start or stop the fan motor.
Active & passive connection
The OJ-DV-HMI-35T comes with a Modbus cable with two RJ12/6 plugs on
each end, used to connect to the OJ-DV. See fig 2.1.
Active mode
When connected to the OJ-DV’s Modbus port “A”, the
OJ-DV-HMI-35T will function as a Modbus Master. Other
forms of Modbus Masters, such as OJ Air2 or BMS
controls cannot be connected at the same time.
Passive mode
Connected to Modbus OJ DV’s port ”C”, the OJ-DV-HMI-
35T will become a Modbus Slave. The hand terminal
can now be used in conjunction with other Modbus
communications using the OJ-DV’s ports “A”, “B” or the
spring terminals A, B and GND.
The OJ-DV-HMI-35T will then work as a “passive” display
for the OJ-DV, from which actual status and values can be
read, while the OJ-DV’s operation is controlled from the Modbus Master connected to ports “A”, “B” or the
spring terminals A, B and GND.
If, whilst connected to port “C”, there is a Modbus Timeout, to ports “A”, “B” or the spring terminals A, B
and GND, the OJ-DV-HMI-35T will automatically switch from a “passive” to “active” controller of the OJ-DV.
If the Modbus communication is reestablished to ports “A”, “B” or the spring terminals A, B and GND, the
OJ-DV-HMI-35T will automatically switch back from an “active” to a “passive” controller.
Figure 2.1
BR1014A11b
© 2019 OJ Electronic A/S
-V+
-Add. Pin2
-Bus B
-Bus A
-Gnd
-Add. Pin2
-Add. Pin2
-Bus B
-Bus A
-Gnd
-Add. Pin2
-V+
-Gnd
-Bus B
-Bus A
-Gnd
-V+
A
C
B
-
BR1014A11c
QUICK START GUIDE OJ-DV-HMI-35T

© 2019 OJ Electronics A/S 3
QUICK START GUIDE OJ-DV-HMI-35T
From the “User settings” menu, the OJ-DV-HMI-35T’s “passive” and “active”
mode can be manually selected with the “Manual override” switch. When
”active” is selected the OJ-DV-HMI-35T will then
override the settings of the Modbus communications to the OJ-DV’s ports ”A”,
”B” or the spring terminals A,B and GND.
After a power cycle of the OJ-DV or the OJ-DV-HMI-35T, the OJ-DV-HMI-35T
will always start up in “passive” mode by default.
When the OJ-DV is controlled in “analog” (“0-10V”) mode, it is recommended
to connect the
OJ-DV-HMI-35T to port “A”.
Menu
Press the menu icon on the upper righthand corner of the home screen to
access a settings menu in order to view or change the settings.
The OJ-DV-HMI-35T settings menu contains the following:
• Status: Readout of the operating parameters of the connected
OJ DV
• Drive setup: Application parameter settings
• User settings: Setup of user settings
• I/O: Configuration of digital inputs and outputs
• Warnings and Alarms: Readout of the active warnings and alarms of the
connected OJ DV
• Modbus: Modbus settings for the connected OJ DV
• Configuration: Configuration of motor and fan
• Software: Readout of software version
Note that a PIN code is required to change the settings in the “Configuration” menu and thus alter the
configuration of the drive. Contact OJ Electronics to obtain this PIN code.
Setpoint
This screen is used to change the dierent values and to enter a password. Use
the displayed numeric keypad to select the value and press OK to confirm the
new value.
The OJ-DV-HMI-35T communicates with the OJ DV via Modbus commands.
Factory and user settings are stored in the OJ DV drive and the settings are
retained even if the voltage supply or connection to the OJ-DV-HMI-35T is lost.

© 2019 OJ Electronics A/S 4
QUICK START GUIDE OJ-DV-HMI-35T
Modbus communication
The OJ-DV-HMI-35T communicates with the DV drive using Modbus RTU
with the following Modbus settings:
• Address = Auto scan for finding the address.
• Baud rate = 38.4 kbps
• Parity = None
• Stop bits = 1/2
The OJ DV has been designed with two Modbus settings: a default Modbus
setting and an alternative Modbus setting.
The default Modbus setting is:
• Address 54, 55, 56 or 57. The address depends on the cable selected
(see DV manual).
• Baud rate = 38.4 kbps
• Parity = None
• Stop bits = 1
• The alternative Modbus setting is set at the factory and is:
• Address 0
• Baud rate = 115.2 kbps
• Parity = Even
• Stop bits = 1
It is possible to change the alternative Modbus setting using Modbus register.
The OJ DV automatically detects whether communication is via the default or alternative Modbus setting.
After 10 seconds of no communication on the default setting, the DV will search for the alternative setting
and vice versa.
Change of Modbus address:
Allow the system 10 seconds to store the settings before disconnecting the OJ-DV-HMI-35T.
The DV will search for the default Modbus address for 10 seconds before changing and searching for the
alternate Modbus address.
Protective cover
The OJ-DV-HMI-35T is supplied with a silicon protective cover to protect it against knocks, oil and dirt.

© 2019 OJ Electronics A/S 5
QUICK START GUIDE OJ-DV-HMI-35T
Menu tree
The top level menu tree of the OJ-DV-HMI-35T is shown below.
The main menu contain eight sub menus, and some of these have their own sub menus.
Installation
OJ-DV-HMI-35T can be fitted onto a flat surface using a screw
or magnets where appropriate.
Fitting onto a flat surface using a screw
The rear of the HMI unit has a keyhole-shaped hole for hanging
the unit on a screw that has been screwed into the flat surface
(see Fig. 1.1). Use a screw with a diameter that is not greater
than 3.5 mm and a length that is not longer than 9 mm.
Fitting onto a flat metal surface using magnets
The black protective cover contains two magnets. The HMI can
be fitted onto a vertical flat metal surface using the bumper
cover (see Fig. 1.1).
Figure 1.1
Installation on flat surface
BR1040A01a

This is a registered trademark owned byOJ Electronics A/S · © 2019 OJ Electronics A/S
OJ Electronics A/S
Stenager 13B • 6400 Sønderborg, Denmark
Tel.: [phone] • Fax [phone]
E-mail: [email protected] • www.ojelectronics.com
6
QUICK START GUIDE OJ-DV-HMI-35T
Technical data
Supply voltage....................................................................................................................... 24 VDC +/-10%
Cable dimensions....................................................................................................................max. 0.75 mm2
Relative humidity .....................................................................................................0–95% (non-condensing)
Operating temperature .......................................................................................................... −10°C to +40°C
Enclosure rating..................................................................................................................... IP21 (EN 60529)
Port ...................................................................................................................................... 1 x RJ12 (RS485)
........................................................................................................................................ 10 x screw terminals
Dimensions (without bumper cover)................................................................................... 80 x 121 x 42 mm
Dimensions with bumper cover................................................................................. 86.1 x 127.1 x 50.9 mm
Max. power consumption...................................................................................................................900 mW
Service and maintenance
The OJ-DV-HMI-35T touch panel contains no parts that require service or maintenance. Contact your
supplier in case of a problem.
Disposal and environmental protection
Help protect the environment by disposing of the packaging and redundant products in an
environmentally responsible manner.
Products marked with this symbol must not be disposed of with household waste, but must
bedelivered to a waste collection centre in accordance with current local regulations.
Liability
OJ cannot be held liable for any errors in catalogues, brochures or other printed material. OJ reserves
the right to alter its products without notice. This also applies to products already on order, provided that
such alterations can be made without requiring subsequent changes in specifications already agreed.
All trademarks in this material are the property of the respective companies. OJ and the OJ logotype are
trademarks of OJ Electronics A/S. All rights reserved.
CE marking
OJ Electronics A/S hereby declares under sole responsibility that the product complies with the following
EU Directives:
EMC – Electromagnetic compatibility: 2014/35/EU
RoHS – Restriction of the use of certain hazardous substances in electrical and electronic equipment:
2011/65/EU
Applied standards
EN 61000-6-2 and EN 61000-6-3 Electromagnetic compatibility (EMC)