DMMetering | PRO-75 SERIES | User manual | DMMetering PRO-75 SERIES User manual

PRO1250D CT MODBUS MID
Three phase four wire energy meter.
User manual
Version 1.11
1
Safety instructions .....................................................................................................3
2
Foreword ..................................................................................................................4
3
MID certificate...........................................................................................................5
4
CE certificate ............................................................................................................6
5
Performance criteria ...................................................................................................8
6
Specifications ............................................................................................................8
7
Basic errors ..............................................................................................................8
8
Description ...............................................................................................................9
9
Dimensions ...............................................................................................................9
10
RS485 communication specifications .........................................................................9
11
Far Infrared communication specifications ............................................................... 10
12
Installation .......................................................................................................... 10
13
Operation ............................................................................................................ 12
13.1 Working indication ............................................................................................. 12
13.2 Consumption indication ...................................................................................... 12
13.3 Reading the meter ............................................................................................. 12
13.4 RS485 output.................................................................................................... 12
13.5 Far infrared communication port .......................................................................... 12
13.6 Pulse output ..................................................................................................... 12
14
CT ratio settings ................................................................................................... 13
15
Troubleshooting .................................................................................................... 13
16
Technical support.................................................................................................. 16
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PRO1250D CT MODBUS MID User manual 0153
1
Safety instructions
Information for your own safety
This manual does not contain all of the safety measures for operation of this meter because special
operating conditions, local code requirements or local regulations may necessitate further
measures. However, it does contain information which must be adhered to for your own personal
safety and to avoid material damage. This information is highlighted by a warning triangle with an
exclamation mark or a lightning bolt depending on the degree of actual or 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 safety
precautions will result in death, serious injury or considerable material damage.
Qualified personnel
Installation and operation of the device described in this manual may only be performed by
qualified personnel. Only people that are authorized to install, connect and use this device, who
have the proper knowledge about labeling and grounding electrical equipment and circuits and can
do so in accordance with local (safety) regulations, are considered qualified personnel in this
manual.
Use for the intended purpose
This device may only be used for the application cases specified in the catalog and the user manual
and only in connection with devices and components recommended and approved by Inepro
Metering B.V.
Proper handling
The prerequisites for perfect, reliable operation of the product are proper transport, storage,
installation and connection, as well as proper operation and maintenance. During its operation
certain parts of the meter might carry dangerous voltages.
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Only use insulated tools suitable for the voltages this meter is used for.
Do not connect while the circuit is connected to a power or current source.
Only place the meter in a dry environment.
Do not mount the meter in an explosive area or exposed to dust, mildew and/or 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 touch the meter’s connection clamps directly with your bare hands, with metal,
blank wire or other conducting material as you will risk an electric shock that could cause
possible injury, serious injury or death.
Make sure the protection covers are replaced after installation.
Maintenance and repair of the meter should only be carried out by qualified personnel.
Never break any seals (if present on this meter) to open the front cover as this might
influence the functionality or accuracy of the meter, and will void all warranty.
Do not drop, or allow physical impact to the meter as there are high precision components
inside that may break and affect the meter measurement negatively.
All clamps should be properly tightened.
Make sure the wires fit properly in the connection clamps.
If the wires are too thin it will cause a bad contact which can spark causing damage to the
meter and its surroundings.
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PRO1250D CT MODBUS MID User manual 0153
Exclusion of liability
We have checked the contents of this manual and every effort has been made to ensure that the
descriptions are as accurate as possible. However, deviations from the description cannot be
completely ruled out, so that no liability can be accepted for any errors or omissions in the
information given. The data in this manual are checked regularly and the necessary corrections will
be included in subsequent editions. If you have any suggestions, please do not hesitate to contact
us.
Subject to technical modifications without notice.
Copyright
Copyright Inepro Metering August 2011. All rights Reserved.
It is prohibited to pass on or copy this document or to use or disclose its contents without express
permission of Inepro Metering BV. Any duplication is a violation of the law and subject to criminal
and civil penalties. All rights reserved, particularly for pending or approved patent awards or
registered trademarks.
Registered trademarks
DMMetering® is a registered trademark of Inepro Metering BV – member of the Inepro Group.
Other names appearing in this manual may be trademarks of third parties and are property of their
respectful owners.
2
Foreword
Thank you for purchasing this energy meter. Inepro has a wide product range of devices. We have
introduced a large number of energy meters on the market suitable for 110V AC to 400V AC (50 or
60Hz). Besides the normal energy meters we also developed our own pre-paid meters with chip
card, chip card re-loaders and a complete PC management control system. For more information
on other products please contact our sales department at sales@ineprometering.com or visit our
website at www.ineprometering.com.
Although we produce this device according to international standards and our quality inspection is
very accurate it’s still possible that this device shows a defect or failure for which we do apologize.
Under normal conditions your product should give you years of trouble free operation. In case
there is a problem with the energy meter you should contact your distributor immediately. Most of
our energy meters are sealed with a special seal. Once this seal is broken there is no possibility to
claim any warranty. Therefore NEVER open an energy meter or break the seal of the device. The
warranty period is 3 years after production, and only valid for production faults.
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PRO1250D CT MODBUS MID User manual 0153
3
MID certificate
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4
CE certificates
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5
Performance criteria
Operating humidity
Storage humidity
Operating temperature
Storage temperature
International standard
Accuracy class
Protection against penetration
of dust and water
Insulating encased meter
protective class
6
≤ 75%
≤ 95%
-25°C - +55°C
-25°C - +55°C
EN50470-1 and 3
1
IP51
Ⅱ
Specifications
Meter type
Nominal voltage
(Un)
Operational voltage
Insulation capabilities:
- AC voltage withstand
- Impulse voltage withstand
Basic current (Ib)
Maximum rated current (Imax)
Operational current range
Peak current withstand
Operational frequency range
Internal power consumption
Test output flash rate (PULSE LED)
Pulse output rate
Data save
7
PRO1250D CT MODBUS MID
230/400V AC (3~)
161/279V ~ 300/520V
4kV for 1 minute
6kV – 1.2µS waveform
1,5 A
6A
0.4% Ib- Imax
30Imax for 0.01s
50 or 60 Hz ±10%
≤2W / 10VA per phase
1600 imp/kWh
1600 imp/kWh
The data can be stored more than 10
years without power.
Basic errors
With balanced loads
0.05Ib
0.1Ib
Cosφ = 0.8C
0.1Ib - Imax
0.2Ib - Imax
Cosφ = 0.8C
Cosφ = 1
Cosφ = 0.5L
Cosφ = 1
Cosφ = 0.5L
±1.5%
±1.5%
±1.5%
±1.0%
±1.0%
±1.0%
With single phase load
0.1Ib - Imax
0.2Ib - Imax
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Cosφ = 1
Cosφ = 0.5L
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±2.0%
±2.0%
PRO1250D CT MODBUS MID User manual 0153
8
Description
A
B
C
D
Front panel
Cover
Case
Security wire slot
Material
Front panel
Cover
Case
9
PC flame resistant plastic
ABS flame resistant plastic
ABS flame resistant plastic
Dimensions
Height
Height with protection cover
Width
Depth
Size of the connection clamps
Weight
100 mm
130 mm
126 mm
65 mm
10 x 8 mm
0,7 kg (net)
10 RS485 communication specifications
Bus type
Protocol
Baud rate
Address range
Maximum bus load
Range
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RS485
MODBUS RTU with 16 bit CRC
1200(default), 2400, 4800, 9600
0-255 user settable
64 meters per bus
1000m
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PRO1250D CT MODBUS MID User manual 0153
11 Far Infrared communication specifications
Infrared wavelengths
baud rate
Communication distance
Communication angle
Protocol
900- 1000nm
1200bps
5m
-15°~+15°
Modbus
12 Installation
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CAUTION
Turn off and if possible lock all sources supplying the energy meter and the equipment that
is connected to it before working on it.
Always use a properly rated voltage sensing device to confirm that power is off.
WARNING
The installation should be performed by qualified personnel familiar with applicable codes
and regulations.
Use isolated tools to install the device.
A fuse, thermal cut-off or single-pole circuit breaker should be fitted on the supply line
and not the neutral line.
The connecting wire, connecting the device to the outside circuit, should be sized according
to local regulations for the maximum amount of the current breaker or other overcurrent
protection devices used in the circuit.
We recommend that the connecting wire which is used to connect meter to the outside
circuit should be sized according to local codes and regulations for the maximum amount of
current of the circuit breaker or other over current protection device used in the circuit.
An external switch or a circuit-breaker should be installed on the supply wires, which will be
used to disconnect the meter and the device supplying energy. It is recommended that this
switch or circuit-breaker is placed near the meter because that is more convenient for the
operator. The switch or circuit-breaker should comply with the specifications of the
building’s electrical design and all local regulations.
An external fuse or thermal cut-off used as an over current protection device for the meter
must be installed on the supply side wires. It’s recommended that this protection device is
also placed near the meter for the convenience of the operator. The overcurrent protection
device should comply with the specifications of the building’s electrical design and all local
regulations.
This meter can be installed indoor, or outdoor enclosed in a meter box which is sufficiently
protected, in accordance with local codes and regulations.
To prevent tampering, an enclosure with a lock or a similar device can be used.
The meter has to be installed against a fire resistant wall.
The meter has to be installed in a well ventilated and dry place.
The meter has to be installed in a protective box if the meter is exposed to dust or other
contaminants.
The meter can be installed and used after being tested and can be sealed afterwards.
The device can be installed on a 35mm DIN rail.
The meter should be installed on a location where the meter can be read easily.
In case the meter is installed in an area with frequent surges for example due to
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PRO1250D CT MODBUS MID User manual 0153
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thunderstorms, welding machines, inverters etc, the meter should be protected with a
Surge Protection Device.
The black pins, closing the (protection) covers, are made as placeholders, please use these
accordingly
The device should be sealed immediately after installing it in order to prevent tampering
Connection of the wires should be done in accordance with the connection diagram as shown
below
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18
16
17
S0
N
1 and 2
3 and 4
5 and 6
18/16/14/12
8 and 9
7
11/13/15
17/10
UL1
UL2
UL3
Pulse
Neutral
CT for L1
CT for L2
CT for L3
UL1、UL2、UL3 and Neutral N
Pulse output contact (N)
Not in use
Not in use
Not in use
10(B)/11(A)
RS485 communication contact
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PRO1250D CT MODBUS MID User manual 0153
13 Operation
13.1
Working indication
On the front panel, there are three power indication LEDs which have different colors.
The yellow LED represents phase L1; the green LED represents phase L2; the red
LED represents phase L3. The three LED’s will burn in case all the phases are
working normally.
13.2
Consumption indication
There is a red LED at the right side of the display with the text (1600 imp/kWh),
which displays the consumption measured by the meter. When power is consumed,
the LED will flash. The faster the LED flashes, the more power is consumed. For this
meter, the LED will flash 1600 times per kWh. Please note that the meter is not
suitable for reverse energy.
13.3
Reading the meter
The meter has a 7 digit LCD which had a variable decimal count. The meter is
equipped with a 6+1 register. This means it can display 1 digit after the dot. In case
the meter is programmed at a 5/5 CT ratio, starting from 200/5, the meter has 7+0
display. The meter cannot be set to zero.
13.4
RS485 output
The meter has a isolated RS485 port on connection 8 and 7. To communicate with a
computer, computer software and an RS485 adapter is required. The transmission
speed is 1200 baud (default) but can be increased to 2400, 4800, 9600 baud.
Note: PC software is available at request. Please see the technical support section
of this manual for more information.
13.5
Far infrared communication port
The far infrared communication port is under on the left bottom side of LCD screen.
The TP800 hand-held programmer can directly communicate with this meter via
infrared. The communication distance can’t be more than 5m.
Note on using Modbus (R485) and Infrared signals simultaneously is only possible if
a 1200 baudrate of the R485 has been set, see section 15.
13.6
Pulse output
The energy meter is equipped with a pulse output which is fully separated from the
inside circuit, and it generates pulses in proportion to the measured energy. In
default setting, the meter pulses 1600 times per KWh with the CT ratio being 5/5.
If the CT ratio is changed, the pulse output will be divided by the ratio chosen, if the
ratio is 250/5 for example the pulse rate will be 1600/50=32 pulses per kWh. The
test pulse output is a polarity dependent, open collector, transistor output
requiring an external voltage source for correct operation. For this external voltage
source, the voltage (Ui) should be 5-27V DC, and the maximum input current (Imax)
should be 27mA DC. To connect the impulse output, connect 5-27V DC to connector
9 (collector), and the signal wire (S) to connector 8 (emitter). The pulse meter is
located on the front panel immediately on the right side of the display with the text
(1600 imp/kWh).
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PRO1250D CT MODBUS MID User manual 0153
8
9
=pin 8 (emitter)
=pin 9 (collector)
=light bundle from the LED
14 CT ratio settings
How to set the CT ratio of the meter
The default CT ratio is 5:5. In case you want to change the CT ratio to another setting, you have
27 options, but you can only change the default CT-ratio once for this meter. It’s advised to set the
CT-ratio immediately after installing the meter.
NOTE: For security reasons, it is only possible to change the CT ratio in the first 30 seconds after
the meter has been turned on. After 30 seconds the PRG button doesn’t allow any changes.
Furthermore, because of MID regulations it is only possible to change the CT ratio once, after the
CT ratio has been set-up it is locked and can only be reset by the manufacturer.
Procedures for changing the CT ratio of the meter:
1. Wire the meter correctly according to section 13. The meter will start and the LCD display will
show the following: “88888.8.8.” and after a second “5-5”
3. Press the PRG button after the meter has started. Then you can set the CT ratio by pressing the
SEL button., The LCD will for example show the following:“- 3000/5”
4. You can choose from the following options: 5/5 50/5 60/5 75/5 100/5 125/5 150/5 200/5 250/5
300/5 400/5 500/5 600/5 750/5 800/5 1000/5 1200/5 1250/5 1500/5 2000/5 2500/5 3000/5.
5. After you selected the CT Ratio, press the PRG button to confirm and complete the ratio setting.
The LCD will display “-END”.
6. The meter will go back to the normal display if you didn’t press the PRG button within 30
seconds, and the LCD will show the energy consumption and CT ratio consecutively.
15 Troubleshooting
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PRO1250D CT MODBUS MID User manual 0153
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CAUTION
During repair and maintenance, do not touch the meter connecting clamps
directly with your bare hands, with metal, blank wire or other conducting
material as that will cause an electric shock and possibly cause injury,
serious injury or even death.
Turn off and if possible lock all sources supplying the energy meter and the
equipment that is connected to it before opening the protection cover and
working on it.
Turn off and lock all power supply to the energy meter and the equipment
to which it is installed before opening the protection cover to prevent the
hazard of electric shock.
WARNING
Maintenance or repair should only be performed by qualified personnel
familiar with applicable codes and regulations.
Use insulated tools to maintain or repair the meter.
Make sure the protection cover is in place after maintenance or repair.
The case is sealed, failure to observe this instruction can result in damage
to the meter.
Problem
Possible cause
Check/Solution
The power supply
indicators (L1, L2 &
L3 LED) are off.
The meter is not
connected
to
a
power source
Are the fuses or/and
protection defect?
L1, L2, L3 and N are
not
connected
correctly
Make
sure
the
wires
are
connected properly and tighten
the screws if possible.
There is no 230V AC
between the N and
one
of
the
L
connections when
power is supplied to
the meter.
Check if there is 230V AC voltage
between N and one of the L
connections with a volt meter.
There is no 400V AC
between
the
L
connections when
power is supplied to
the meter.
Check if there is 400V AC volt
between N and one of the L
connections with a voltage meter.
The
red
consumption LED is
not flashing (PULSE
LED).
There is no load
connected to the
meter.
The load on the line
is very low.
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surge
If the checks above don’t solve
the problem, please contact
technical support for a meter
replacement.
Connect a load to the meter.
Check with an Ohm-meter if the
load value is very low.
PRO1250D CT MODBUS MID User manual 0153
There is a fault
inside the meter.
The register doesn’t
count.
No pulse output.
The pulse output
rate is wrong.
RS485
communication is
not working.
® 2011
There is almost no
load connected to
the meter
If the checks above don’t solve
the problem, please contact
technical support for a meter
replacement.
Check if the consumption LED
is flashing. 160 flashes of the LED
at 1600 pulses per kWh equals
0.1kWh.
Maybe there is a
fault
inside
the
meter.
The pulse output is
not supplied with
DC power
Please contact technical support
for a meter replacement.
The pulse output is
not
connected
correctly
Check if the connection is correct:
the
5-27V
DC
should
be
connected
to
the
collector
connection (pin 9 +)
and the signal wire (S) to the
emitter connection (pin 8-).
Maybe there is a
fault
inside
the
meter.
Maybe there is a
fault
inside
the
meter.
The meter ID is
incorrect
Please contact technical support
for a meter replacement.
The RS485 wire is
too long to properly
communicate with
the meter.
Make sure that the length of wire
in the RS485 is no more than
1000 meters.
There are too many
devices connected
to the same RS485
bus
Check that there are no more
than 64 devices or the maximum
amount supported by your
receiver connected to the bus
The cables are not
correctly connected
to the RS485 port
The correct connection is RS485
wire A (D+) to terminal 11, RS485
wire B (D-) to terminal 10.
The polarity of the
cables is wrong
Swap the MODBUS
communication wires if you are
not sure if the wires are correctly
connected
Unable to change
meter ID
Please keep the PRG button on
the meter pressed while sending
the command to the meter.
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Check the external voltage source
(Ui) is 5-27V DC with a voltage
meter
Please contact technical support
for a meter replacement.
Check and use the correct the
meter ID. The default meter ID is
0.
PRO1250D CT MODBUS MID User manual 0153
Infrared
communication not
working.
The pulse output
is rate wrong.
Maybe there is a
fault inside the
meter.
Please contact technical support
for a meter replacement.
The meter ID is not
correct
Check and use the correct the
meter ID. The default meter ID is
0.
The distance
between the
receiver and the
Infrared transmitter
is too long.
Make sure the distance between
the transmitter and the receiver is
no more than 5 meter. Also check
if the receiver is in the direct sight
of the infrared interface.
The meter is set at
another
baudrate
than 1200bps using
the
(RS485)
communication
port.
Please set the baudrate to the
default 1200 bps (see section
13.4)
The communication
protocol used is
wrong.
Please contact technical support
for a meter replacement.
Maybe there is a
fault inside the
meter.
Please contact the technical
support to get the meter
communication protocol.
Maybe the CT ratio
is different from the
default value of 5/5.
Check the CT ratio used, see
section 14 in order to change the
CT ratio setting.
Maybe there is a
fault in the inside
circuit.
Please connect with technical
supporter to replace this meter.
16 Technical support
For questions about one of our products please contact:
-
Your local Inepro Metering distributor
Email: support@ineprometering.com
www.ineprometering.com
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PRO1250D CT MODBUS MID User manual 0153
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