1. Description
The BACnet MS/TP module with 8 individually configurable
resistance or voltage inputs is designed for local switching
operations. It is suitable to record resistance or voltage values of for
example passive and active temperature sensors electrical
ventilation or mixing valves, valve positions etc. The inputs are
universally configurable by standard object via a BACnet-Client.
Addressing of the module and baud rate setting are done with the
two address switches (x1 / x10) on the front. Possible settings are
addresses 00 to F9 and baud rates 9600 Bd, 19200 Bd, 38400 Bd,
57600, 76800 Bd and 115200 Bd.
Analog Input Module
BMT-AI8
11088213
7603/899299-03
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.
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 65 mA (AC) / 25 mA (DC)
Relative duty cycle 100 %
Input
Resistance range 40 Ohms to 4 MOhms
Voltage input 0 ... 10 V DC
Resolution 10 mV
Error about ±100 mV
Housing
Dimensions WxHxD 2.0 x 2.8 x 2.6 in. (50 x 70 x 65 mm)
Weight 104 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
separate 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/Output 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
Protective circuitry polarity reversal protection of
operating voltage
polarity reversal protection of supply
and bus
Temperature range
Operation -5 °C ... +55 °C
Storage -20 °C ... +70 °C
Display
Operating and bus activity green LED
Error indication red LED
5. Connection Diagram
8 C2 7 C2 6 C2 5 C2 S
BUS A-
BUS B+
A1
A2
A-
B+
A1
A2
A-
B+
GND
24 V AC/DC
1 C2 2 C2 3 C2 4 C2 S
4. Wiring Diagram
BUS A-
BUS B+
8
C2
7
C2
6
C2
A2 /GND
A1/+24 V
BACnet MS/TP
on RS-485
RISC - CPU
24 V
Outputs:
Voltage 15 V DC
or 24 V AC/DC
Inputs:
Voltage: 0-10 V
Resistance:
40 Ohm - 4MOhm
S
S
C2
4
C2
3
C2
2
C2
1
C2
5
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
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