Autometers Systems A-45 Series Manuel de démarrage rapide - Page 2
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4. Communication
4.1 Pulse Output
The meter is equipped with 2 pulse outputs, which are fully
isolated from the inside circuit. That generates pulses in
proportion to the measured enerfy. The pulse outputs are
polarity dependent, passive transistor output requiring an
external voltage source for correct operation. For this external
voltage source, the voltage shall be 5-27V DC, and the
maximum input current shall be 27mA DC.
ATTENTION: Pulse output must be fed as shown in the adjacent
wiring diagram. Ensure polarities and connection mode are
correct. Opto-coupler with potential-free SPST-No Contact.
Contact range: 5~27V DC
Max current input: 27mA DC
4.2 Pulse Output 1
The pulse output is configurable and can be set to generate pulses to represent
total import/export KwH or kvarh.
The default is 100 imp/kWh Import energy.
The pulse width is factory set at 100 ms.
4.3 Pulse Output 2
Pulse output 2, the constant (red light) is non configurable and is factory set to
1000 imp/kWh.
The pulse width is factory set at 60 ms.
4.4 RS 485 Output for Modbus
The A-45CTM is supplied with an RS 485 Modbus RTU protocol for communication.
The following parameters can only be set in the factory.
Parity : NONE / EVEN / ODD ( Default EVEN )
Stop bits: 1 / 2 (Default 1 )
Modbus Address : 1-247
Baud Rate :2400, 4800, 9600 (Default 9600 )
Please contact us for the detailed Modbus/M-Bus communication protocol.
Default: Autometers protocol v.6
5. Safety
5.1 Safety Instructions
This manual does not contain all the safety instructions for the operation of the equipment
(module, device) beacuse special operating conditions and local code requirements or
regulations may neccesitate further mesasures. However, it does contain information which
must be read for your personal safety and to avoid material damages.
This information is highlighted by a warning triangle and is represented as follows, depending
on the degree of potential danger.
WARNING
This means that failure to observe the instruction can result in death, serious
injury, or considerable material damage.
CAUTION
This means hazard of electric shock and failure to take the necessary
precautions will result in death, serious injury or considerable material damage.
Qualified Personnel
Operation of the equipment (module, device) described in this manual may only
performed by qualified personnel. Qualified personnel, in this manual, means
persons who are authorised to commission, start up, ground and label devices,
systems and circuits according to safety and regulatory standards.
Proper Handling
The prerequisites for perfect, reliable operation of the product are proper transport,
storage installation, and assembly as well as proper operation and maintenance.
When operating electrical equipment, certain parts of this equipment automatically
carry dangerous voltages. Improper handling can therefore result in serious injuries
or material damage.
Use only insulating tools
Do not connect while circuit is live (hot)
Place the meter only in dry surroundings
Do not mount the meter in an explosive area or expose the meter to dust,
mildew and insects
Make sure the used wires are suitable for the maximum current of this meter
Make sure the AC wires are connected correctly before activating the current/-
voltage to the meter
Do not connect the meter to a 3 phase - 400VAC - network
Do not touch the meter connecting clamps directly with your bare hands, with
metal, blank wire or other material as you may get an electrical shock
Make sure the protection cover is placed after installation
Installation, maintentance and reparation should only be done by qualified
personnel
Never break the seals and open the front cover as this might influence the
functionality of the meter and will voic the warranty
Do not drop or allow physical impact to the meter as there are high precision
components inside that may break
6. Installation
The A45 series is designed to fit a standard 35mm DIN Rail
7. Progamming the Meter
To enter set up mode press the button for 3 seconds. The meter has four
progammable settings: CT1, Address, Baude Rate and Parity. Note: Under SET
mode if there is no operation, the display will revert to the default display.
OUTPUT
7.1 CT1 Setting
P+
Com
R
U
imp
7.2 Modbus Address Setting
7.3 Baud Rate Setting
7.4 Parity Setting
7. Dimensions
8. Wiring diagram
Blue circle indicates Pulse Output 1 terminals (Default 100 imp/kWh)
Red circle indicates Modbus Output terminals TX+, TX-
N
L
A-45P
Under this menu, long press the button
seconds to enter the set up mode.
The first digit will flash. Press the button
or decrease the number.
Long press the button
setting.
After setting the CT1 data will be automatically stored and
the display will return to the setting mode.
Under this menu, long press the button
to enter the set up mode.
The first digit will flash. Press the button
or decrease the number. Wait 4 seconds, the next digit will
flash. Repeat until correct value has been selected. After 4
seconds the address data will be automatically stored and
the display will return to the setting mode.
Modbus default: Baudrate 9600, parity Even
Under this menu, long press the button
to enter the set up mode.
The digits will flash. Press the button
Baud Rate options (from 1200 to 9600).
After 4 seconds the Baud Rate will be automatically stored
and the display will return to the setting mode.
Under this menu, long press the button
to enter the set up mode.
The digits will flash. Press the button
Parity option (none/even/odd)
After 4 seconds the Parity data will be automatically stored
and the display will return to the setting mode.
17.5mm
45mm
62mm
119mm
35mm
LOAD
LOAD
N
G TX TX
L
MAINS
MAINS
A-45M
for 3
to increase
for 4 seconds to confirm the
for 3 seconds
to increase
for 3 seconds
to to choose the
for 3 seconds
to choose the
LOAD
N
L
G
TX TX
P2
S2
Current Transformer
S1
P1
MAINS
A-45CTM