Contemporary Control Systems BMT-AI8 User Manual

Analog Input Module
BMT-AI8

11088213

1. Description

The BACnet MS/TP module with 8 individually configurable
resistance or voltage input s is designed for local s witching
operations. It is suitable to record resistance or voltage values of for
example passive and active temperature sensors electric al
ventilation or mixing valves, valve positions etc. The inputs are
univer sally configurable by standard object via a BACnet-Client.
Addressing of the module and baud rate set ting 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, 384 00 Bd,
57600, 7680 0 Bd and 115200 Bd.

2. Declaration of Conformity

The device was te sted according to the applicable standards. Con­formit y 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 applic able directions for industrial safety and prevention
of accidents as well as the VDE rule s.

Technicians and/or installers are informed that they have to
elec trically discharge themselves as prescribed before installation or
maintenance of the devices.

Only qualified pers onnel shall do mounting and installation work
with the devices, see section “qualified personnel”.

The information of these instructions have to be read and under­stood by ever y person using this device.

7603/899299-03

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 per sons
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 safet y 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 Wx HxD 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 IP4 0
Terminal blocks IP20

Terminal blocks

Supply and bus
4 pole te rminal 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
Inp ut/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 prote ction of
operating voltage
polarity reversal prote ction of supply
and bus

Temperature range

Operation -5 °C ... +55 °C
Storage -20 °C ... +70 °C

Display

Operating and bus activity green L ED
Error indication red LED

4. Wiring Diagram

A1/+24 V

A2 /GND

BUS B+

BUS A-

24 V

BACnet MS/TP
on RS-485

Outputs:

S

Voltage 15 V DC

S

or 24 V AC/DC

Inputs:
Voltage: 0-10 V
Resistance:
40 Ohm - 4MOhm

5. Connection Diagram

8 C2 7 C2 6 C2 5 C2 S

24 V AC/DC

A1

A2

B+

A-

1 C2 2 C2 3 C2 4 C2 S

GND

BUS B+

BUS A-

RISC - CPU

A1

A2

B+

A-

8
C2
7
C2
6
C2
5
C2
4
C2
3
C2
2
C2

1
C2

METZ CONNECT GmbH

Im Tal 2 | 78176 Blumberg | Germany | Phone [phone] | Fax [phone]
Mounting instruction see ww w.metz-connect.com

6. Mounting

Power down the equipment

Mount the module on standard rail ( TH35 per IEC 60715 in
junction boxes and/or on distribution panels).

Installation
Electric installation and device termination shall be done by qua­lifie d pers ons only, by respe cting all applicable
specifications and regulations.

Plug in the terminal block for bus connection

1

2

Connect the cable for bus supply

5 mm

43

Mounting in series

5 6

The module can be aligned without inter space. Use the jumper
plug to connect bus and supply voltage when the modules are
mounted in series.

The max imum qua ntity of modules connecte d in line is limited
to 15 or to a maximum powe r consumption of 2 A mps (AC o r
DC) pe r conne ction to the power suppl y. For any similar block
of additional mo dules a s eparate conne ction to the pow er
supply is mandatory.

7. Network adress and Bit rate setting

Configuration Switches
Hexadecimal Switches x10, x1 define the Network Address
(00 - F9; e.g. F9h = 15x16+9 = 249d) and Baud rate (FA – FF).

• Turn Switch x10 to E (Device is temporaryly configured as Slave)

• Turn Switch x1 to A – F to select Baud rate

• Turn Switch x10 to F, wait 1 second

• Red and green LEDs are blinking when Baud rate ist stored in
EEPROM

• Turn Switch x10 to select Network Address

• Turn Switch x1 to select Network Address

MS/ TP Master if using Network Address 0 x00 … Max_Master,
MS/ TP Slave if using Network Address Max_Master + 1 … 0xF9.

Adress switch x10 F F F F F F

Adress switch x1 A B C D E F

Bit rate (Bit/s) 9600 19200 38400 57600 76800 115200

Factor y set ting: 9600 Bit/s

8. Jumper positions for voltage feeding
of active sensors

8 C2 7 C2 6 C2 5 C2 S

24V

+24 V
GND
B+
A-

BMT-AI8

1 C2 2 C2 3 C2 4 C2 S

8 C2 7 C2 6 C2 5 C2 S

24V

+24 V
GND
B+
A-

BMT-AI8

1 C2 2 C2 3 C2 4 C2 S

X10

ERROR

BACnet MS/TP

X10

ERROR

BACnet MS/TP

24V

+24 V
GND

BUSY

BUSY

B+
A-

1

2

3

4

24V

+24 V
GND
B+
A-

1

2

3

4

Jumper unter der Blende
Jumper below the faceplate

Jumper unten:
Klemmen S = 15 V DC
(Werkseinstellung)

Jumper in bottom position:
Contacts S = 15 V DC
(Facotry setting)

Jumper unter der Blende
Jumper below the faceplate

Jumper oben:
Klemmen S = 24 V AC/DC

Jumper in top position:
Contacts S = 24 V AC/DC

X1

X1

9. Connection examples

Passiver Fühler
Passive sensor

8 C2 7 C2 6 C2 5 C2 S

24V

+24 V
GND
B+
A-

BMT-AI8

1 C2 2 C2 3 C2 4 C2 S

Halbleiter Sensor

Semiconductor sensor

ERROR

Pullup Widerstand

Pullup resistor

BACnet MS/TP

X10

X1

BUSY

Aktiver Fühler
Active sensor

24V

+24 V
GND
B+
A-

1

24 V

2

J

3

15 V

4

METZ CONNECT GmbH

Im Tal 2 | 78176 Blumberg | Germany | Phone [phone] | Fax [phone]
Mounting instruction see ww w.metz-connect.com