Inepro PRO75D 100A MODBUS MID energy meter User manual
The PRO75D 100A MODBUS MID is a DIN rail single phase two wire energy meter that can be used to measure energy consumption. The meter has a 5+2 digit LCD display which is used to record consumption and can’t be reset to zero. The meter can also be read via RS485 or infrared via a handheld unit.
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PRO75D 100A MODBUS MID
DIN rail single phase two wire energy meter
User manual
Version 1.22
® 2011 - 2 - PRO75D 100A MODBUS MID User manual 0020
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.
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.
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If the wires are too thin it will cause a bad contact which can spark causing damage to the meter and its surroundings.
Make sure the wires fit properly in the connection clamps.
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 June 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 [email protected] 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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3 MID certificate
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4 CE certificate
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5 Performance criteria
Operating humidity ≤ 75%
Storage humidity ≤ 95%
Operating temperature -25°C - +55°C
Storage temperature -30°C - +70°C
International standard EN50470-1 and EN50470-3
Accuracy class 1
Protection against penetration of dust and water IP51
Insulating encased meter of protective class II
6 Specifications
Meter type PRO75D 100A MODBUS MID
Nominal voltage (Un) 230/400 AC
Operational voltage 161 - 299V AC
Insulation capabilities:
- AC voltage withstand 4KV for 1 minute
- Impulse voltage withstand 6KV – 1.2µS waveform
Basic current (Ib) 10A
Maximum rated current (Imax) 100A
Operational current range 0.4% Ib- Imax
Over current withstand 30Imax for 0.01s
Operational frequency range 50Hz or 60 Hz ±10%
Internal power consumption ≤2W /Phase -≤10VA/Phase
Test output flash rate
Pulse output rate
Data save
1600imp/kWh
1600imp/kWh
The data can be stored for more than 10 years without power
7 Basic errors
0.05Ib Cosφ = 1 ±1.5%
0.1Ib Cosφ = 0.5L ±1.5%
Cosφ = 0.8C ±1.5%
0.1Ib - Imax Cosφ = 1 ±1.0%
0.2Ib - Imax Cosφ = 0.5L
Cosφ = 0.8C
±1.0%
±1.0%
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C
B
A
8 Description
A
B
C
D
Material
D
Front panel
Cover
Case
Security wire slot
Front panel
Cover
PC flame resistant plastic
ABS flame resistant plastic
Base ABS flame resistant plastic
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9 Dimensions
Height
Height without protection cover
Width
Depth
Size of the connection clamps
Bus type
Weight
10 RS485 communication specifications
RS485
Baud rate
130 mm
100 mm
76 mm
65 mm
10 x 8 mm
0.2 Kg (net)
1200
（default), 2400, 4800, 9600
Range
Protocol
Address range
1000m
MODBUS RTU with 16 bit CRC
0-255 user settable
Maximum bus load 64 meters per bus segment
11 Far Infrared communication specifications
Infrared wavelengths baud rate
Communication distance
Communication angle
Protocol
900- 1000nm
1200bps
5m
-15°~+15°
Modbus
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12 Installation
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 insulated tools to install the device.
A fuse, thermal cut-off or single-pole circuit breaker should be fitted on the supply line and not on the neutral line.
The connecting wire, connecting the device to the outside circuit, should be sized in accordance with local regulations for the maximum amount of the current breaker or other overcurrent protection devices 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 overcurrent 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 or onto a panel with screws.
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 thunderstorms, welding machines, inverters etc, the meter is required to be protected with a
Surge Protection Device.
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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1 and 2 Phase line IN/OUT
3 and 4 Neutral line IN/OUT
5 and 6 Test pulse output contact
7 and 8 RS485 communication contact RS485B-/RS485A +
13 Operation
13.1 Consumption indication
There is a red LED (with the text 1600imp/kWh under it) on the front panel which displays power 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 flashes 1600 times per kWh.
13.2 Reverse indication
A red LED (with the text Reverse under it) will lighten when the meter load current flow is running in reverse direction.
13.3 Communication indication
On the front panel of the meter, there is a COM LED. When data is communicated via the infrared or RS485 port between the meter and an external device, this green LED will blink.
13.4 Reading the meter
The meter has an 7 digit LCD which has 5.2 decimals, this means it can display 2 digits after the dot. The energy meter is equipped with a 5+2 digit LCD which is used to record consumption and can’t be reset to zero. The display has 5 digits before and 2 decimal after the dot on the display. The reading accuracy is 1/100 kWh. For this meter, the LED will flash 1600 times per kWh. The meter can also be read via either RS485 or infrared via a handheld unit.
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13.5 Pulse output
The energy meter is equipped with a pulse output which is optically isolated from the inside circuit. The meter generates pulses in proportion to the measured energy consumption for the purpose of remote reading and accuracy testing. The pulse output is a polarity dependent, open collector transistor 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) is 27mA DC.
To connect the impulse output, connect 5-27V DC to connector 6 (collector), and the signal wire (S) to connector 5
(emitter).
5-= emitter
6+= collector
=light bundle from the LED
13.6 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.
13.7 Communication port
The meter is equipped with a far infrared port and an RS485 port, it is possible to program the settings of the meter data or read the meter via these 2 ports. The communication protocol conforms to Modbus.
13.8 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 14.
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14 Troubleshooting
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.
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Problem
The consumption
LED is not flashing
(PULSE LED).
Infrared communication not working.
Possible cause
There is no load connected to the meter.
The load on the line is very low.
There is a fault inside the meter.
The meter ID is not correct
The distance between the receiver and the
Infrared transmitter is too long.
The communication protocol used is wrong.
The meter is set at another baudrate than 1200bps using the (RS485) communication port.
Maybe there is a fault inside the meter.
Check/Solution
Connect a load to the meter.
Check with an Ohm-meter if the load value is very low.
If the checks above don’t solve the problem, please contact technical support for a meter replacement.
Check and use the correct the meter ID. The default meter ID is
0.
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.
Please contact technical support to get the meter communication protocol.
Please set the baudrate to the
default 1200 bps (see section 10)
Please contact technical support for a meter replacement.
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Problem
The register doesn’t count.
No pulse output.
The pulse output rate is wrong.
RS485 communication is not working.
Possible cause
There is almost no load connected to the meter
Maybe there is a fault inside the meter.
The pulse output is not supplied with
DC power.
The pulse output is not correctly. connected
Maybe there is a fault inside the meter.
Maybe there is a fault inside the meter.
The meter ID is incorrect
The RS485 wire is too long to properly communicate with the meter.
There are too many devices connected to the same RS485 bus
The cables are not correctly connected to the RS485 port
The polarity of the cables is wrong
Maybe there is a fault inside the meter.
Check/solution
Check if the consumption LED is flashing. 160 flashes of the LED at 1600 pulses per kWh equals
0.1kWh.
Please contact technical support for a meter replacement.
Check the external voltage source
(Ui) is 5-27V DC with a voltage meter
Check if the connection is correct: the 5-27V DC should be connected to the collector connection (pin 6+) and the signal wire (S) to the emitter connection (pin 5-).
Please contact technical support for a meter replacement.
Please contact technical support for a meter replacement.
Check and use the correct meter
ID. The default meter ID is 0.
Make sure that the length of wire in the RS485 is no more than
1000 meters.
Check that there are no more than 64 devices or the maximum amount supported by your receiver connected to the same bus
The correct connection is RS485 wire A (D+) to terminal 8, RS485 wire B (D-) to terminal 7.
Swap the MODBUS communication wires if you are not sure if the wires are correctly connected
Please contact technical support for a meter replacement.
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15 Technical support
For questions about one of our products please contact:
- Your local Inepro Metering distributor
- Email: [email protected]
www.ineprometering.com
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Key Features
- DIN rail mounting
- single phase two wire
- RS485 communication
- Far infrared communication
- pulse output
- 5+2 digit LCD display
- MID certified
Frequently Answers and Questions
What is the maximum current rating of the PRO75D 100A MODBUS MID?
What is the accuracy class of the PRO75D 100A MODBUS MID?
What is the communication protocol used by the PRO75D 100A MODBUS MID?
What is the maximum distance for infrared communication?
How many pulses per kWh does the PRO75D 100A MODBUS MID generate?
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