METZ CONNECT GmbH | Im Tal 2 | 78176 Blumberg | Germany
Phone +49 7702 533-0 | Fax +49 7702 533-433
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 METZ CONNECT 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.
7626/899299-06
Digital Input Module
BMT-DI4
1108841319
1. Description
The BACnet MS/TP module with 4 digital inputs was developed for
decentralized switching tasks. It is suitable for detecting potential-free
switch states, for example electrical limit switches on vent valves or
auxiliary contacts of power contactors. The inputs can be operated by
means of potential-free switches or contacts or used as voltage inputs.
The inputs can be scanned by means of standard objects via a BACnet
client. The module is addressed and the baud rate is set by means of
two address switches on the front.
Suitable for decentralized mounting in serial sub-distributor.
3. Technical Data
BACnet Interface
Protocoll BACnet MS/TP
Transmission rate 9600 ... 115200 Bd
(factory setting 9600 Bd)
Cabling RS485 two wire bus with voltage
equalizing cable in bus / line topology;
terminate with 120 Ohms
Supply
Operating voltage range 20 ... 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 1.4 x 2.8 x 3.0 in. (35 x 70 x 65 mm)
Weight 95 g
Mounting position any
Mounting standard rail TH35 per IEC 60715
Mounting in series the maximum quantity of modules
without space connected in line is limited to 15 or
to a maximum power consumption of
2 Amps (AC or DC) per connection to
the power supply. For any similar
block of additional modules a sepa-
rate connection to the power supply
is mandatory.
Material
Housing Polyamide 6.6 V0
Terminal blocks Polyamide 6.6 V0
Cover plate Polycarbonate
Type of protection
(IEC 60529)
Housing IP40
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
(terminal block and jumper plug are
included to each packing unit)
Module connection
Input max. AWG 12 (4.0 mm²) solid wire
max. AWG 14 (2.5 mm²) stranded wire
Wire diameter min. 0.3 mm up to max 2.7 mm
Temperature range
Operation -5 °C ... +55 °C
Storage -20 °C ... +70 °C
Protective circuitry polarity reversal protection of
operating voltage
polarity reversal protection of supply
and bus
Display
Operating / bus activity green LED
Error indication red LED
Status of the inputs yellow LED
5. Connection Diagram
BUS A-
BUS B+
1+1- L+ 2-2+
L- 4- 4+ L+ 3+ 3-
A1
A2
A-
B+
A1
A2
A-
B+
GND
24 V AC/DC
L-
4. Wiring Diagram
BUS A-
BUS B+
3-
3+
L+
4+
4-
L-
A2 /GND
A1/+24 V
BACnet MS/TP
on RS-485
RISC - CPU
24 V
1-
L+
2+
2-
L-
1+
max. 30 Vmax. 30 V
(3 pages)
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