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MCM-Inst-1.10

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3 Installation

ADDR+02

ADDR+03

ADDR+01

ADDR+00

CT1

CT2

CT3

CT1

CT2

CT3

CT1

CT2

CT3

CT1

CT2

CT3

–

5 Vdc

All CT connectors
use the same
numbering
sequence (1, 2, 3)
and white/black
wire orientations.

1 2 3

Bias-

Bias+

Termination

Modbus

RTU

RS-485

A-

B+

1 2 3 4 5 6 7 8

1 0

O N

Baud Rate

Address

Modbus

TCP

Ethernet

RJ45

ADDR+06

ADDR+07

ADDR+05

ADDR+04

CT1

CT2

CT3

CT1

CT2

CT3

CT1

CT2

CT3

CT1

CT2

CT3

ADDR+14

ADDR+15

ADDR+13

ADDR+12

CT1

CT2

CT3

CT1

CT2

CT3

CT1

CT2

CT3

CT1

CT2

CT3

ADDR+10

ADDR+11

ADDR+09

ADDR+08

CT1

CT2

CT3

CT1

CT2

CT3

CT1

CT2

CT3

CT1

CT2

CT3

ADDR+26

ADDR+27

ADDR+25

ADDR+24

ADDR+22

ADDR+23

ADDR+21

ADDR+20

ADDR+18

ADDR+19

ADDR+17

ADDR+16

Figure 1: Connection Diagram

Summary of Contents for Continental Control Systems MCM MB Series

Page 1: ...www ctlsys com Multi Circuit Meter MCM Modbus RTU Modbus TCP Electric Power Meter Installation Guide Models MCMxx y MB zzzz MCMxx y MBT zzzz ...

Page 2: ... Connections 14 3 6 Current Transformer Connections 15 3 7 Modbus RTU RS 485 Communication 16 3 8 Modbus TCP Ethernet Communication 18 4 Operation 23 4 1 Initial Configuration 23 4 2 Power Status LEDs 23 4 3 Modbus Communication LED 24 4 4 Monitoring 24 4 5 Maintenance and Repair 24 5 Specifications 25 5 1 Measurement 25 5 2 Electrical 25 5 3 EIA RS 485 Interface 26 5 4 Ethernet Interface 26 5 5 C...

Page 3: ...nstalling and using the product Potential shock hazard from dangerous high voltage Earth ground UL Listed mark for the USA and Canada It is located on the UL 508A label inside the enclosure and applies to the entire MCM The UL Recognized mark for the USA and Canada appears on the MCM cards and some accessories 1 2 Terminology current sensor or current transformer or CT the terms current sensor and...

Page 4: ...T inputs so the number of submeters will be the number of CTs divided by three 4 8 12 16 20 24 or 28 VoltageGroup The measurement circuitry on all MCM models can measure 100 to 600 Vac but the power supply configuration depends on the electrical service type The voltage group A B C D or E selects the appropriate configuration See the table below to verify that the voltage group matches your electr...

Page 5: ...s Opt EP to configure the MCM for even parity communications See the datasheet for all options The four most common models follow MCM24 A MB FE1C 24 CTs 120 240 Vac fiberglass enclosure circuit breaker MCM24 A MB ME3C 24 CTs 120 240 Vac steel enclosure circuit breaker MCM72 A MB FE2C 72 CTs 120 240 Vac fiberglass enclosure circuit breaker MCM72 A MB ME4C 72 CTs 120 240 Vac steel enclosure circuit ...

Page 6: ...ctlsys com product and support pages MCM product page https ctlsys com product mcm MCM support page https ctlsys com support mcm Install record https ctlsys com s mcm install rec Datasheet https ctlsys com m MCM Datasheet pdf Modbus register list https ctlsys com m WND Modbus Registers FW37 xls ...

Page 7: ...nation Modbus RTU RS 485 A B C 1 2 3 4 5 6 7 8 1 0 O N Baud Rate Address Modbus TCP Ethernet RJ45 ADDR 06 ADDR 07 ADDR 05 ADDR 04 CT1 CT2 CT3 CT1 CT2 CT3 CT1 CT2 CT3 CT1 CT2 CT3 ADDR 14 ADDR 15 ADDR 13 ADDR 12 CT1 CT2 CT3 CT1 CT2 CT3 CT1 CT2 CT3 CT1 CT2 CT3 ADDR 10 ADDR 11 ADDR 09 ADDR 08 CT1 CT2 CT3 CT1 CT2 CT3 CT1 CT2 CT3 CT1 CT2 CT3 ADDR 26 ADDR 27 ADDR 25 ADDR 24 ADDR 22 ADDR 23 ADDR 21 ADDR 2...

Page 8: ...13 24 etc is just informational and will not be used when accessing data from the MCM Submeter Block As described above the MCM is composed of four or more SMBs each behaving like a WattNode meter with three CT inputs Each SMB has its own Modbus address based on the address ADDR set with the DIP switch on the primary SMB For example if you set the DIP switch address to 2 then ADDR 0 2 so the addre...

Page 9: ...onfiguration and does not require any changes to the MeterConfig registers The next three CT inputs are monitoring a three phase 50A rooftop unit RTU load Again the line voltages are matched with the CT inputs and do not require any changes to MeterConfig CT1 and CT2 of Modbus address 5 are monitoring two legs of a delta connected compressor The MCM only requires two CTs for delta loads but if onl...

Page 10: ...fig2 and MeterConfig3 associated with CT1 CT2 and CT3 respectively Connect the line voltages to the MCM inputs as shown in the following sections If you are monitoring different types of loads be sure to use the line voltage connection for the type of load with the most wires connected 3 2 1 Three Phase Four Wire Wye This is a common commercial and industrial service that includes a neutral conduc...

Page 11: ...ured with three CTs Load 2 is three phase three wire delta measured with two CTs Load 3 is single phase line to line and measured with one CT VB VC VN VA CT2 ADDR 1 ADDR 0 CT1 CT3 CT2 CT1 CT3 Additional Loads L3 L2 L1 Meter Power Load 1 3Ø Load 2 3Ø 2 CTs Load 3 1Ø 1 CT Earth Figure 4 Three Phase Three Wire Delta This service supports the following types of loads Three phase three wire delta no ne...

Page 12: ...tion Load 1 is three wire with neutral measured with two CTs Load 2 is two wire with neutral measured with one CT Load 3 is two wire line to line without neutral measured with one CT VB VC VN VA CT2 ADDR 1 ADDR 0 CT1 CT3 CT2 CT1 CT3 Load 1 Load 2 Load 3 Additional Loads Earth L2 L1 N Meter Power Figure 5 Single Phase Three Wire This service supports the following types of loads Single phase line t...

Page 13: ...al circuit protection and disconnects see 3 5 1 Connect the line voltage wires see 3 5 Mount the CTs around the line conductors Make sure the CTs face the source see 3 6 Connect the twisted white and black wires from the CTs to the black terminal blocks on the MCM matching the wire colors to the white and black dots on the MCM label see 3 6 2 Document the information for each circuit load using th...

Page 14: ... amps Note that the circuit breaker is only rated for operation from 25 C to 55 C 13 F to 131 F If you purchase a model with a three phase fuse block you will need to provide an external disconnect Models with no protection will need an external disconnect and overcurrent protection Any external disconnect or circuit breaker must be clearly marked suitably located and easily reached Use circuit br...

Page 15: ...rmation on selecting appropriate current transformers CTs WARNING To reduce the risk of electric shock always open or disconnect the circuit from the power distribution system or the building service before installing or servicing CTs WARNING When using UL Recognized CTs they must be installed on insulated conductors only and maintained away from all live parts Do not use 1 amp or 5 amp current ou...

Page 16: ... RS 485 physical link The MCM MB can be connected to PCs with RS 485 interfaces gateways data loggers and other devices that accept RS 485 Modbus RTU 3 7 1 RS 485 Cables There are many choices for RS 485 cabling Ideally use cable specifically rated for RS 485 applica tions as it will have the best impedance for long distances to minimize interference and reflections However for distances up to 100...

Page 17: ...able an entire network section 3 7 3 Modbus RTU DIP Switches The MCM MB uses two DIP switches to configure the address the baud rate termination and biasing 1 2 3 4 5 6 7 8 1 0 O N 1 2 3 1 0 O N Baud Rate Address Bias Bias Termination Figure 10 DIP Switches Use DIP switches 1 6 from the upper switch to select the base Modbus address 1 to 63 Each submeter block has its own offset from the base addr...

Page 18: ... devices port 30718 with DeviceInstaller Supports ARP ICMP ping and TFTP Some XPort models support other features such as a web interface but this model does not The directions in this guide should be sufficient for most installations but for more advanced configu ration or additional details see the following Lantronix links Main XPort product page https www lantronix com products xport DeviceIns...

Page 19: ...AC addresses start with 00 80 83 The same MAC address without the hyphens is encoded in the Code 128 barcode on the label Figure 11 Lantronix XPort MAC Address Label Once you know the MAC address you can program that into your DHCP server For larger organiza tions contact your IT department for this step For more information search the internet for DHCP reservation A similar approach is to let you...

Page 20: ... although it may need to be enabled see 3 8 6 Windows Telnet Client and you may use any other telnet client The XPort includes a unique default password for telnet access The factory default password will be the UL Listing serial number from the label installed in the enclosure For Figure 12 below the pass word would be B 84728808 with a space between the B and the number Figure 12 UL Listed Label...

Page 21: ...Settings Changes to other settings may render the MCM MBT inoperable The 2 Serial Mode Settings is for the internal MCM network if you change any of these settings such as the baud rate the XPort will not be able to communicate with the MCM submeter blocks SMBs The Network IP Settings can be used to assign a static IP address specify a gateway and a netmask To change these settings press 1 then pe...

Page 22: ...9 Check the Telnet Client box see figure below 10 Click OK and wait for the installation to complete Figure 15 Windows 10 Telnet Installation Dialog You can run telnet from the command line by typing something like the following but change the IP address to match the address of the MCM The 9999 is required because the XPort uses a custom TCP port number for the telnet interface C telnet 192 168 1 ...

Page 23: ...ation The CT1 CT2 and CT3 on the diagrams correspond to the three meter elements of each SMB see 1 2 Terminology 4 2 1 Normal Start Up Each SMB displays the following start up sequence whenever power is first applied 4 2 2 Positive Power Any element with the LEDs flashing green indicates positive active power 4 2 3 No Power Any element with a solid green LED indicates no power but the line voltage...

Page 24: ... a valid packet addressed to this device Yellow Off Short yellow flashes or rapid flashing indicate valid packets addressed to different devices Red A one second red flash indicates an invalid packet incorrect baud rate bad CRC noise incorrect parity etc This should never happen on Modbus TCP models Red Solid red indicates the address is set to zero an invalid choice This should never happen on Mo...

Page 25: ...easurement Category III is for measurements performed in the building installation Examples are distribution boards circuit breakers wiring bus bars junction boxes switches socket outlets in the fixed installation and equipment for industrial use and some other equipment for example stationary motors with a permanent connection to the fixed installation Current Transformer Inputs Voltage Mode Nomi...

Page 26: ... conducted emissions CISPR EN 55022 1994 Class B radiated and conducted emissions 5 6 Environmental Operating Temperature MCM12 MCM24 MCM36 MCM48 MCM60 30 C to 70 C 22 F to 158 F MCM72 MCM84 30 C to 65 C 22 F to 149 F All models with circuit breaker 25 C to 55 C 13 F to 131 F Altitude Up to 3000 m 9842 ft Operating Humidity non condensing 5 to 90 relative humidity RH up to 40 C decreasing linearly...

Page 27: ...y defects arising under normal use and does not include malfunctions or failures resulting from misuse neglect improper application improper installation water damage acts of nature lightning product modifications alterations or repairs by anyone other than CCS Except as set forth herein CCS makes no warranties expressed or implied and CCS disclaims and negates all other warranties including witho...

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