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
Product Usage Instructions
SUMMARIZE
SPECIFICATIONS
Accuracy standards
SETUP PROCEDURE
MAINTENANCE
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

BJ-MCM400 Multi Channel Circuit Metering System

BLUE-JAY-BJ-MCM400-Multi-Channel-Circuit-PRODUCT-IMAGE

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
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)

BLUE-JAY-BJ-MCM400-Multi-Channel-Circuit-01

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. BLUE-JAY-BJ-MCM400-Multi-Channel-
Circuit-02

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

BLUE-JAY-BJ-MCM400-Multi-Channel-Circuit-03

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:

BLUE-JAY-BJ-MCM400-Multi-Channel-Circuit-11

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:

BLUE-JAY-BJ-MCM400-Multi-Channel-Circuit-12 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

CH3

| Last time set value| 1~9999| Default 0050
CT ratio of

CH4

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

Unit: kVA

0~1.000

50| CH1_FR| float| 2| Channel_1 Frequency,

Unit:0.01Hz

Unit: kVarh

56| CH1_EqZ+| float| 2| Channel_1 Total positive reactive energy,

Unit: kVarh

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

Unit: kWh

76| CH1_EpC+| float| 2| Channel_1 C phase positive active energy,

Unit: kWh

Unit: kWh

100-182| CH2_| float| 2| Channel_2 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