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Digital Input Module
MR-DI4-IP
110834131901IP
1. Description
The Modbus module in a surface mount housing with 4 digital inputs
was developed for decentralized switching tasks. It is suitable for
detecting potential-free switch states from electrical limit switches and
their external status display. Examples are fire dampers or vent valves.
The inputs can be operated by means of potential-free switches or
contacts or be used as voltage inputs. The inputs can be scanned by
means of standard objects via a Modbus master. The module address,
the baud rate and the parity are set by means of two address switches
or by software.
Possible settings are addresses 00 to 99 and baud rates 1200, 2400,
4800, 9600, 19200, 38400, 57600 und 115200 Bd.
The device does not participate in bus communication if the address
is 00 (reserved for broadcast commands).
METZ CONNECT | Im Tal 2 | 78176 Blumberg | Germany | Phone +49 7702 533-0 | Fax +49 7702 533-433
Distributed by RIA CONNECT GmbH and BTR NETCOM GmbH
Mounting instruction see www.metz-connect.com
2. Declaration of Conformity
The device was tested according to the applicable standards. Con-
formity was proofed. The declaration of conformity is available at
the manufacturer BTR NETCOM GmbH.
Notes Regarding Device Description
These instructions include indications for use and mounting of the
device. In case of questions that cannot be answered with these
instructions please consult supplier or manufacturer.
The indicated installation directions or rules are applicable to the
Federal Republic of Germany. If the device is used in other countries
it applies to the equipment installer or the user to meet the
national directions.
Safety Instructions
Keep the applicable directions for industrial safety and prevention of
accidents as well as the VDE rules.
Technicians and/or installers are informed that they have to
electrically discharge themselves as prescribed before installation or
maintenance of the devices.
Only qualified personnel shall do mounting and installation work
with the devices, see section "qualified personnel".
The information of these instructions have to be read and under-
stood by every person using this device.
Symbols
Warning of dangerous electrical voltage
Danger
means that non-observance may cause risk of life,
grievous bodily harm or heavy material damage.
Qualified Personnel
Qualified personnel in the sense of these instructions are persons
who are well versed in the use and installation of such devices and
whose professional qualification meets the requirements of their
work.
This includes for example:
• Qualification to connect the device according to the VDE
specifications and the local regulations and a qualification to put
this device into operation, to power it down or to activate it by
respecting the internal directions.
• Knowledge of safety rules.
• Knowledge about application and use of the device within the
equipment system etc.
3. Technical Data
Modbus Interface
Protocol
Modbus RTU
Transmission rate
1200 to 115200 Bd
(factory setting 19200 Bd Even)
Cabling
RS485 two wire bus with voltage
equalizing cable in bus / line topology
terminate with 120 Ohms
Supply
Operating voltage range
20 to 28 V AC/DC (SELV)
Current consumption
50 mA (AC) / 20 mA (DC)
Relative duty cycle
100 %
Input
Voltage input
30 V AC/DC
High-signal recognition
>7 V AC/DC
Housing
Dimensions WxHxD
6.259 x 1.634 x 4.724 in.
159 x 41,5 x 120 mm
Weight
300 g
Material
Housing
Polyamide 6.6 V0
Terminal blocks
Polyamide 6.6 V0
Cover plate
Polycarbonate
Type of protection
(IEC 60529)
Housing
IP20
Terminal blocks
IP20
Terminal blocks
Supply and bus
4 pole terminal block
max. AWG 16 (1.5 mm²) solid wire
max. AWG 18 (1.0 mm²) stranded wire
Wire diameter
min. 0.3 mm up to max. 1.4 mm
Module connection
Digital Input
max. AWG 16 (1.5 mm²) solid wire
max. AWG 18 (1.0 mm²) stranded wire
Wire diameter
min. 0.3 mm up to max 1.4 mm
Termination for external
display modules
Connectors
2x RJ45
Temperature range
Operation
-5 °C to +55 °C
Storage
-20 °C to +70 °C
Protective circuitry
polarity reversal protection of
operating voltage
polarity reversal protection of supply
and bus
Internal Display
Operating and bus activity green LED
Error indication
red LED
Status of the inputs
yellow LED
External Display
Multicolor LED
Status closed
red
Status open
red
Status movement
yellow
4. Wiring Diagram
A1/+24 V
24 V
A2 /GND
1
BUS B+
C1
BUS A-
2
C1
3
C1
4
C1
GND
5. Connection Diagram
Bus
BUS A-
Display 2
BUS B+
BUS A-
RJ45
4 C1 3 C1
BUS B+
Damper 2
Supply
Damper 1
A2
GND
A1
24 V AC/DC
1 C1 2 C1
RJ45
A2
GND
A1
24 V AC/DC
Display 1
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