BLUE JAY BJ-MCM400 Multi Channel Circuit Metering System User Manual
- June 10, 2024
- BLUE JAY
Table of Contents
BJ-MCM400 Multi Channel Circuit Metering System
Product Information
The Multi-channel Circuit Metering System BJ-MCM400 is a compact and robust metering solution that enables reliable monitoring of building electrical loads at a low installation cost-per-point. The unit performs real-time metering and measures energy consumption o 4 channels circuits for three-phase circuits. The MCM400 meters are ideal for multi-tenant or departmental metering applications within office towers, condominiums, apartment buildings, shopping centers, and other multi-user environments.
- Advanced communication options including Modbus via RS485, I/O communications provide for extensive reliable data exchange
- Multiple units can be connected together to meter an unlimited number of circuits
Specifications
The specifications of the BJ-MCM400 Multi-channel Circuit
Metering System are as follows:
- Version: 1.31
- Power supply: Within the provisions of the instrument
- Current input terminal: Non-open during installation
- Voltage input terminal: Non-short circuit during installation
- Instrument wiring: Consistent with the internal system settings
- Communication parameters: Must be consistent with the PC when communicating with the PC
Safety Considerations
Be sure to read and follow the safety considerations in the user manual
before using the BJ-MCM400 Multi-channel Circuit Metering System.
Maintenance and Technical Service
Refer to the user manual for maintenance and technical service information.
Product Usage Instructions
Follow the below instructions to ensure proper usage of the BJ-MCM400 Multi- channel Circuit Metering System:
- Before turning on the power supply, make sure that the power supply is within the provisions of the instrument.
- During installation, ensure that the current input terminal is non-open and the voltage input terminal is non-short circuit.
- Ensure that the instrument wiring is consistent with the internal system settings.
- When communicating with the PC, ensure that the instrument communication parameters are consistent with the PC.
Refer to the user manual for detailed installation and start-up instructions, connection terminal information, safety considerations, maintenance, and technical service information.
Read me
When you use BJ-MCM400 series Multi-Channel Circuit Metering system, be sure
to carefully read this user manual, and be able to fully understand the
implications, the correct guidance of operations in accordance with user
manual, which will help you make better use this AC Energy Meter, and help to
solve the various problems at the scene.
- Before the meter turning on the power supply, be sure that the power supply within the provisions of the instrument;
- When installation, the current input terminal must non-open, voltage input terminals must Non-short circuit;
- Be sure the instrument wiring consistent with the internal system settings;
- When communicating with the PC, instrument communication parameters must be consistent with the PC
- Please read this user manual carefully
- Please save this document
Tel: +0086-023-67628702
Email: tech@cqbluejay.com
www.cqbluejay.com
Add: 1802,Building 2,No.88,Jianxin East Road,Chongqing,400020,China
SUMMARIZE
The MCM400 Series provides a compact and robust metering solution, enable reliable monitoring of building electrical loads with a low installation cost- per-point by combining sub-metering. The unit performs real-time metering, measures energy consumption of 4 channels circuits for three phase circuits.
Advanced communications options including Modbus via RS485, I/O communications provide for extensive reliable data exchange. Multiple units can be connected together to meter unlimited number of circuits. The versatility of MCM400 meters are ideal for multi-tenant or departmental metering applications within office towers, condominiums, apartment buildings, shopping centers and other multi-user environments.
Measurement Function
- Voltage: Line Voltage; Phase Voltage
- Current: Total Current; Current per channel
- Power and Power Factor: Total power Reactive Power, Apparent Power, Power Factor and for per channel
- Frequency: System Frequency
Energy Function
Energy (kWh) measurement meeting international standards, accuracy is Class
1.0. It optional Time of Use feature: 12 Seasons, 4 Tariffs record, max three-
month data for each channel.
Over/Under Limit Alarming
Users can select parameters and set their set points. An alarm will be
triggered when the setpoint is reached, user can get the info from MODBUS
reading.
Power Quality Analysis
Optional power quality parameters such as voltage and current THD, Odd
harmonic distortion (Total Odd HD), even harmonic distortion (Total Even HD),
2 ~ 21 times the harmonic content, Current K-factor (KF), crest factor (CF),
telephone interference factor (THFF), voltage and current unbalance etc.
Communication and Network
Supports RS485 communication open protocol: Modbus RTU;
SPECIFICATIONS
Reference standard:
- Basic electricity: IEC 61557-12:2007
- Active energy: IEC 62053-21:2003
- Reactive energy: IEC 62053-23:2003
Accuracy standards
| Parameter | Accuracy | A phase | B phase | C phase | All |
|---|
Voltage Current Active Power
Reactive Power Apparent power Power Factor Active Energy Reactive Energy Frequency
| 0.2
0.2
0.5
0.5
0.5
0.5
1
2
0.1
| V1 A1 W1
var1 VA1 PF1| V2 A2 W2
var2 VA2 PF2| V3 A3 W3
var3 VA3 PF3| W
var VA PF
Wh varh Hz
Notes: final metering accuracy depends one sampling CT and PT accuracy
Input
- Voltage: Rated 100~220V (need confirm before order)
- Current: Rated ../100mA (optional ../0.333V, need confirm before order) Frequency: 45-65Hz
Overload
Current: 1.2 times rated continuous; 5 seconds for 10 times the rated Voltage:
1 seconds for 2 times the rated
Dielectric strength
IEC/EN 61010-1:2010
2kV AC RMS 1 minute, between input / output / case / power supply
EMC Test
| standard| Test voltage
---|---|---
Electrostatic discharge immunity test:| IEC-61000-4-2\
level 4| 8Kv
Electrical fast transient burst immunity test| IEC61000-4-4
level 3| Input 1kV; Power supply 2kV
Surge (Shock) immunity test| IEC61000-4-5 level 4| common mode test voltage
4kV
Work environment
- Temperature: -15C~ +55C
- Humidity: RH 20%~95% (No condensation)
Storage Conditions
-
Temperature: -30C~+70C
-
Humidity: RH 20%~95%
-
Working Power
AC/DC 85-265V, 45-65Hz
DC 20-60V (Optional)
Maximum power consumption 3W -
Dimensions : L × H × D =87.3X132X46.5mm (with wiring terminal)
INSTALLATION AND START-UP
The manual you hold in your hands contains information and warnings that the
user should respect in order to guarantee a proper operation of all the
instrument functions and keep its safety conditions. The instrument must not
be powered and used until its definitive assembly is on the cabinet’s door.
Whether the instrument is not used as manufacturer’s specifications, the
protection of the instrument can be damaged.
When any protection failure is suspected to exist (for example, it presents
external visible damages),the instrument must be immediately powered off. In
this case contact a qualified service representative.
Installation
Mounting
Instrument is to be mounted on 35mm Din-rail. Keep all connections inside the
cabinet.
Note that with the instrument powered on, the terminals could be dangerous to
touch and cover opening actions or elements removal may allow accessing
dangerous parts. Therefore, the instrument must not be used until this is
completely installed. 
Notes:
Auxiliary power:
MCM400 meter with AUX power input, if not for a special statement, we provide
the 85-265VAC/DC power interface for standard products. Please ensure that the
auxiliary power match meter access to prevent damage to the product.
Connection terminal of MCM400
Notes:
The current input pin need to access the CT, and output signal of CT is
0-100mA or 0~0.333V, please confirm your ordering meter types and prepare
related CT.
Wiring diagram may be changed due to the special requirements of customers order, please refer the label on the rear part.
If you are or sure or signs unclear please contact:
Blue Jay Technical Support: tech@cqbluejay.com
SETUP PROCEDURE
Key operation
for screen switch or value increase/decrease
“ for menu enters or exit
“ for enter next menu or confirm the change
Show electric parameters
When the MCM400 in monitor screen, user can use keypad switch shows the
electrical parameters,
- Press “→” to switch another screen in this channel,
- Press “←” to switch another channel parameter
- Press” to switch more details parameter in screen screen roller logic as following:
Note:
Energy data is displayed in 8-digit decimal format by default.
As counter increased, the decimal point position will move right, data
increased by 10 times, the unit display changing from KWh to MWh.
Parameters Setting
The SETUP procedure of the MCM400 is performed by means of several SETUP
options. When into the SETUP, use the keyboard to select different options and
enter required variables:
Press the key SET can enter the parameter setting. the screen ask access password (Default is 0001), then press can enter the menu.
The operation menu logic as following:
Notes:
- Clear energy: Customers can write commands through RS485 or through the screen to clear the energy data to 0. Once the secondary side value of the internal memory reaches to 232(4294,967,296), counter automatically reset to 0.
- Clear energy: write command 0x0A0A to register address 3000
Menu Structure
| level 1 | Level 2 | Level 3 | Level 4 | Description |
|---|---|---|---|---|
| Input Setting | Wiring mode | 3P4L/3P3L2CT/3P3 L3CT | input signal network |
measurement
Rated volt| 220V| | Default setting, cannot be modified
Rated amp| 0.100A(100mA)| | Default setting, cannot be modified
PT ratio| Last time set value| 1~9999| Default 0001
CT ratio of CH1| Last time set value| 1~9999| Default 0050
CT ratio of CH2| Last time set value| 1~9999| Default 0050
CT ratio of
CH3
| Last time set value| 1~9999| Default 0050
CT ratio of
CH4
| Last time set value| 1~9999| Default 0050
Comm Setting| Address| 1~247| /| Default 0001
Baud Rate| 2400 / 4800 / 9600| /| Default is 9600
Check format| n.8.1 / o.8.1 / e.8.1| /| Factory default (n.8.1)
Alarm Setting| Alarm_1~5| Mode| OFF / Upper Limit / Lower Limit| Total three
mode
Delay| /| Alarm triggered time delay, Default 001.0s
Parameter| Ua/Ub/Uc/Uab/Ubc…| Alarm triggered parameters
Value| 0~9999| Default is 5500,value related to secondary side parameters,
unit:
Volte – 0.1V; Amp – 0.001A;
Active power – 0.1W; Reactive power – 0.1VAR; Power factor – 0.001;
Frequency – 0.01HZ;
hysteresis| 0~9999| Default is 0050
Related channel| CH1-4| Default CH1
System Settings| Password| 0~9999| /| Reset user password
Display
| MAN
Number 1~9
| ****
/
| Manual switching, or automatic switching in 1~9sec
Backlight| 1~5| /| LCD backlight duration, unit is min, default is 5
Clear| Energy| /| Clear the record in meter
Contrast| 1~9| /| LCD display contrast, default is 5
COMMUNICATION PROTOCOL
Connection for the RS485 BUS
The composition of the RS-485 cabling must be carried out with a meshed screen
cable
(minimum 3 wire), diameter of not less than 0.5mm2, with a maximum distance of
1,200 m between the BJ194… and the master unit. This Bus may connect a maximum
of 32 BJ194…
Note:
- For communication with the master unit, customers can choose the RS-232 to RS-485 converter to use
- Full range of BJ-… meter RS485 PIN number is 58,59,60
- Due to product modifications or custom requirements, the interface pin place may be changed. For details, please refer to product label on the rear board
MODBUS © protocol
Modbus RTU Frame Format:
| Address code | 1 BYTE | ** Slave device address 1-247** |
|---|---|---|
| Function code | 1 BYTE | **** Indicates the function codes like read |
coils / inputs
Data code| 4 BYTE| Starting address, high byte Starting address,
low byte Number of registers, high byte Number of registers, low byte
Error Check code| 2 BYTE| Cyclical Redundancy Check ( CRC )
MODBUS FUNCTIONS ****
Code:
| ****
Meaning:
| Description:
---|---|---
FUNCTION 03/04| Reading of n Words| This function permits to read all
the electrical parameters of the BJ…series.
FUNCTION 06| Write register| Write value in to the relevant register
Register Address Table
Basic Power Data—Primary Side
| Address | Data | Byte mode | Instruction |
|---|---|---|---|
| 0 | CH1_Ua | float | 2 |
| 2 | CH1_Ub | float | 2 |
| 4 | CH1_Uc | float | 2 |
| 6 | CH1_Uab | float | 2 |
| 8 | CH1_Ubc | float | 2 |
| 10 | CH1_Uca | float | 2 |
| 12 | CH1_Ia | float | 2 |
| 14 | CH1_Ib | float | 2 |
| 16 | CH1_Ic | float | 2 |
| 18 | CH1_Pa | float | 2 |
| 20 | CH1_Pb | float | 2 |
| 22 | CH1_Pc | float | 2 |
| 24 | CH1_P∑ | float | 2 |
Unit: kW
26| CH1_Qa| float| 2| Channel_1 Individual phase reactive power, Unit: kVar
28| CH1_Qb| float| 2
30| CH1_Qc| float| 2
32| CH1_Q∑| float| 2| Channel_1 Total reactive power, Unit: kVar
34| CH1_Sa| float| 2| Channel_1 Individual apparent power, Unit: kVA
36| CH1_Sb| float| 2
38| CH1_Sc| float| 2
40| CH1_S∑| float| 2| Channel_1 Total apparent power,
Unit: kVA
42| CH1_PFa| float| 2| Channel_1 Individual power factor, 0~1.000
44| CH1_PFb| float| 2
46| CH1_PFc| float| 2
48| CH1_PF∑| float| 2| Channel_1 Total power factor,
0~1.000
50| CH1_FR| float| 2| Channel_1 Frequency,
Unit:0.01Hz
52| CH1_EpZ+| float| 2| Channel_1 Total positive active energy, Unit: kWh
54| CH1_EpZ-| float| 2| Channel_1 Total negative active energy,
Unit: kVarh
56| CH1_EqZ+| float| 2| Channel_1 Total positive reactive energy,
Unit: kVarh
58| CH1_EqZ-| float| 2| Channel_1 Total negative reactive energy, Unit: kWh
60| CH1_EpA+| float| 2| Channel_1 A phase positive active energy,
Unit: kWh
62| CH1_EpA-| float| 2| Channel_1 A phase negative active energy,
Unit: kVarh
64| CH1_EqA+| float| 2| Channel_1 A phase positive reactive energy,
| | | | Unit: kVarh
---|---|---|---|---
66| CH1_EqA-| float| 2| Channel_1 A phase negative reactive energy,
Unit: kWh
68| CH1_EpB+| float| 2| Channel_1 B phase positive active energy,
Unit: kWh
70| CH1_EpB-| float| 2| Channel_1 B phase negative active energy, Unit: kVarh
72| CH1_EqB+| float| 2| Channel_1 B phase positive reactive energy, Unit:
kVarh
74| CH1_EqB-| float| 2| Channel_1 B phase negative reactive energy,
Unit: kWh
76| CH1_EpC+| float| 2| Channel_1 C phase positive active energy,
Unit: kWh
78| CH1_EpC-| float| 2| Channel_1 C phase negative active energy, Unit: kVarh
80| CH1_EqC+| float| 2| Channel_1 C phase positive reactive energy, Unit:
kVarh
82| CH1_EqC-| float| 2| Channel_1 C phase negative reactive energy,
Unit: kWh
100-182| CH2_| float| 2| Channel_2 parameter, structure refer to
Channel_1
200-282| CH3_parameter| float| 2| Channel_3 parameter, structure refer to
Channel_1
300-382| CH4_parameter| float| 2| Channel_4 parameter, structure refer to
Channel_1
Meter status data****
| Address | Data | Byte mode | Instruction |
|---|---|---|---|
| 1202 | Alarm | int | 1 |
Alarm_1~5 status
1240
| ****
Wiring mode
| ****
Int
| ****
1
| 0: 3P4W
1: 3P3W-2CT
2: 3P3W-3CT
1241| Voltage range| Int| 1| Unit: V
1242| Current range| Int| 1| Unit: mA
1243| PT ratio| Int| 1| Range: 1-9999
1244| CT of CH1| Int| 1| Range: 1-9999
1245| CT of CH2| Int| 1| Range: 1-9999
1246| CT of CH3| Int| 1| Range: 1-9999
1247| CT of CH4| Int| 1| Range: 1-9999
Voltage harmonic (max 21th)****
| Address | Data | Byte mode | Instruction |
|---|---|---|---|
| 1300 | THDUa | int | 1 |
| 1301 | THDUb | int | 1 |
| 1302 | THDUc | int | 1 |
| 1303 | TOHDUa | int | 1 |
0.1%
1304| TOHDUb| int| 1| B-phase Voltage odd harmonic total distortion
1305| TOHDUc| int| 1| C-phase Voltage odd harmonic total distortion
1306| TEHDUa| int| 1| A-phase Voltage even harmonic total distortion,
unit 0.1%
1307| TEHDUb| int| 1| B-phase Voltage even harmonic total distortion
1308| TEHDUc| int| 1| C-phase Voltage even harmonic total distortion
1320-1339| HUa| int| 20| A phase voltage harmonic ratio for 2 to 21th, unit
0.1%
1340-1359| HUb| int| 20| B phase voltage harmonic ratio for 2 to 21th
1360-1379| HUc| int| 20| C phase voltage harmonic ratio for 2 to 21th
Current harmonic (max 21th)****
| Address | Data | Byte mode | Instruction |
|---|---|---|---|
| 1400 | THDIa1 | int | 1 |
| 1401 | THDIb1 | int | 1 |
| 1402 | THDIc1 | int | 1 |
| 1403 | TOHDIa1 | int | 1 |
distortion, unit 0.1%
1404| TOHDIb1| int| 1| Channel_1 B-phase Current odd harmonic total
distortion
1405| TOHDIc1| int| 1| Channel_1 C-phase Current odd harmonic total
distortion
1406| TEHDIa1| int| 1| Channel_1 A-phase Current even harmonic total
distortion, unit 0.1%
1407| TEHDIb1| int| 1| Channel_1 B-phase Current even harmonic total
distortion
1408| TEHDIc1| int| 1| Channel_1 C-phase Current even harmonic total
distortion
1420-1439| HIa1| int| 20| Channel_1 A phase Current harmonic ratio for 2 to
21th, unit 0.1%
1440-1459| HIb1| int| 20| Channel_1 B phase Current harmonic ratio for 2 to
21th
1460-1479| Hlc1| int| 20| Channel_1 C phase Current harmonic ratio for 2 to
21th
1500-1579| CH2 Harmonic| int| 20| Channel_2 harmonic value, structure refer to
Channel_1
1600-1679| CH3 Harmonic| int| 20| Channel_3 harmonic value, structure refer to
Channel_1
1700-1779| CH4 Harmonic| int| 20| Channel_4 harmonic value, structure refer to
Channel_1
SAFETY CONSIDERATIONS
All installation specification described at the previous chapters named:
INSTALLATION AND STARTUP, INSTALLATION MODES and SPECIFICATIONS.
Note that with the instrument powered on, the terminals could be dangerous to touching and cover opening actions or elements removal may allow accessing dangerous parts. This instrument is factory-shipped at proper operation condition.
MAINTENANCE
The MCM400 does not require any special maintenance. No adjustment,
maintenance or repairing action should be done when the instrument open and
powered on, should those actions are essential, high-qualified operators must
perform them.
Before any adjustment, replacement, maintenance or repairing operation is
carried out; the instrument must be disconnected from any power supply source.
When any protection failure is suspected to exist, the instrument must be
immediately put out of service. The instrument’s design allows a quick
replacement in case of any failure.
TECHNICAL SERVICE
For any inquiry about the instrument performance or any failure
Contact to Blue Jay’s technical service.
Blue Jay – After-sales service
E-mail : tech@cqbluejay.com