MB MBMet-500AB Specification sheet

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Solar Irradiation Sensor (Modbus RS485 Output) - Operation and Installation Manual
Models –MBMet-500AB, MBMet-500BB, MBMet-500CB and MBMet-500DB
Document Number:
M4 050 020 010 01 (R1)
(Suitable for HW Version-101 and SW Version – 101)
Contents
Contents ............................................................................................................................................................ 1
1. Warnings .................................................................................................................................................... 2
2. Technical Specifications Solar Irradiation Sensor ...................................................................................... 3
3. Parts of Solar Irradiation Transducer ......................................................................................................... 5
4. Solar Irradiation Transducer– Installation ................................................................................................. 6
5. Solar Irradiation Sensor – Connections ..................................................................................................... 8
6. MBMet-500: – Default Configuration ........................................................................................................ 9
7. MODBUS Registers .................................................................................................................................... 9
7.1 MODBUS Registers: ............................................................................................................................ 9
7.2 Configuration of MODBUS Communication Parameters ................................................................. 10
7.3 Setting Default MODBUS Communication Parameters ................................................................... 12
8. General Maintenance .............................................................................................................................. 13
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1. Warnings
 Installation at site should be done by skilled and qualified personal after taking required
approvals.
 Use proper protection gear and tool while installing the device.
 Be aware of your surroundings while doing the installation work.
 Serious injury can occur if proper safety norms are not followed.
 Compliance with all utility and electrical safety codes regulations are mandatory.
 Read the manual and get acquainted with the senor connections and terminals before
commencing installation activity.
 Before connecting the sensor system, read its label to confirm power supply
requirements.
 All connections should be done only when power to the sensor is switched off.
 Improper installation and connections may damage the device and sensor connected to
the same.
 Protect from overvoltage and static electricity.
 Physically damaged sensors should not be used or connected to main power.
 Use proper earth connection.
 Use proper size screwdriver (tools) and cable for connection else the terminals
might get damaged.

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2. Technical Specifications Solar Irradiation Sensor
Technical specifications for the Solar Irradiation sensor are provided in table-2.1 below.
Model/ Parameters MBMet-500AB MBMet-500BB MBMet-500CB MBMet-500DB
Output signal RS485 Modbus
Sensor Silicon
Power Supply 9-32 VDC
Power Consumption 100mW
Solar Irradiation
Range 0-1500 W/m2
Accuracy ±5 W/m2 ±3 % of reading
Resolution 1
Response Time 2-3 seconds
Stability 0.5% per annum
Cell Temperature
Range -40 to 90
0
C
Accuracy ±0.3% FS
Resolution 0.1
Response Time 2-3 seconds
Ambient Air Temperature (Integrated Sensor)
Sensor Type - RTD- PT100 - -
Range - -40 to 90
0
C - -
Accuracy - ±0.3% FS - -
Resolution - 0.1 - -
Response Time - 3-5 seconds - -
Ambient Air Temperature (External Sensor with three meters silicon cable)
Sensor Type - - RTD- PT1000 -
Range - - -40 to 90
0
C -
Accuracy - - ±0.3% FS -
Resolution - - 0.1 -
Response Time - - 3-5 seconds -
PV Module Temperature (External Sensor with three meters silicon cable)
Sensor Type - - - RTD- PT1000
Range - - - -40 to 90
0
C
Accuracy - - - ±0.3% FS
Resolution - - - 0.1
Response Time - - - 4-6 seconds
Table-2.1: Technical specifications

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General specifications are provided in table 2.2 below:
Parameter Specification
Irradiation Sensor Enclosure Cast Aluminum
Ingress Protection IP65
Irradiation Sensor Enclosure Size 120 (L) x 76 (W) x 65
(H) mm
Weight 350 grams (approx.)
Mounting clamp (suitable for mounting on PV module side) SS 304
Cable terminals 1.5 sq. mm. copper
Integrated Ambient Temperature Sensor 40mm x 4mm (SS304)
Cable glands (EMC protected) M12x1.5mm
Ambient operating temperature -30 to 700C
Ambient operating humidity 0 to 99% RH
Table -2.2: General specifications

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3. Parts of Solar Irradiation Transducer
Details of parts shipped along with Solar Irradiation Transducer are provided in table 3.1
below.
Mark
in Fig
Description
MBMet-
500AB
(Fig 3.1)
MBMet-
500BB
(Fig 3.2)
MBMet-
500CB
(Fig 3.3)
MBMet-
500DB
(Fig 3.4)
1 Transducer 01 01 01 01
2 Temperature sensor NA Integrated
PT100
External
Ambient
PT1000
External
PV Module
PT1000
3 SS Spring Clip for Temperature
sensor mount NA NA 01 NA
4 Mounting Plate (SS-304) 01 01 01 01
5 M5 X 32mm SS Hex Screw 02 02 02 02
6 M5 SS Washer 04 04 04 04
7 M5 Spring Washer 04 04 04 04
8 M5 SS Nut 04 04 04 04
9 M5 X 20mm SS Round Screw 02 02 02 02
Table-3.1: Parts shipped with MBMet-500.
Fig-3.1: MBMet-500AB Parts Fig-3.2: MBMet-500BB Parts