CMeX12S

CMeX12S M-Bus Master for 128 meters

CMeX10S-13S is an M-Bus Master which, by providing additional drive strength, extends the number of meters an Elvaco CMe Series Gateway is able to use. The product is equipped with a unique IR Pass Through feature which enables up to four CMe/CMeX Series devices to communicate via IR, by stacking them side-by side. The product also supports integration with existing M-Bus systems through RS232.

The CMeX12S model is a reliable M-Bus master that extends the number of meters that can be used by a compatible M-Bus gateway. This device is therefore a fundamental component of a modern M-Bus technology-based measuring system infrastructure. The reliable operation of this M-Bus Master for 128 meters rests on a unique IR pass-through feature that allows data to be transmitted to the M-Bus gateway without the need to install any additional cables.

CMeX12S is an M-Bus Master which, by providing additional supply current, extends the number of meters a CMe Series Gateway is able to use. The product is equipped with a unique IR Pass Through feature which enables up to four CMe/CMeX Series devices to communicate via IR, by stacking them side-by side. CMeX12S also supports integration with existing M-Bus systems through RS232.

To ensure maximum longevity, the CMeX12S M-Bus Master for 128 meters consists of a robust polyamide casing and fail-safe, low-maintenance electronics. For ease of installation, the model can easily be mounted on a standard DIN rail.

A simple interface consisting of coloured LED lights shows whether the CMeX12S M-Bus Master for 128 meters is working correctly. The green LED lights up when the device is on, while the two yellow LEDs show that data is currently being transmitted and the red LED indicates an error message. The CMeX12S M-Bus Master for 128 meters is compatible with all M-Bus meters, ABB meters with IR interfaces and all CMe/CMeX series devices produced by Elvaco.

Datasheet

Quick Manual

EU Declaration Of Conformity

User Manual

UK Declaration Of Conformity

Technical Data

Mechanics

Protection class	IP20
Dimensions	108 x 90 x 65 mm
Weight	220g
Mounting	DIN-rail (DIN 50022) 35 mm

Electrical Connections

Supply voltage	Screw terminal. Cable 0.75-2.5 mm²
M-Bus master port	Pin terminal. Solid wire 0.6-0.8 Ø mm
RS232	RJ45 8/8

Electrical Characteristics

Nominal voltage	100-240 VAC (+/- 10%)
Voltage range	-10 % to +10 % of nominal voltage
Frequency	50/60 Hz
Power consumption (max)	<25 W
Power consumption (nom)	0.07 W x M-Bus unit loads + 1.5 W
Overvoltage category	CAT 2

Integration

Compatibility

All M-Bus meters, ABB meters with IR interface, CMe/CMeX Series

User Interface

Green LED	Power
Red LED	Error
Yellow LED 1	M-Bus data transmission from device
Yellow LED 2	M-Bus data transmission to device

M-Bus

Interfaces	IR, integrated M-Bus Master
M-Bus standard	EN 13757

Integrated M-Bus Master

Nominal voltage	42 VDC
M-Bus baud rate	300 och and 2400 bit/s
Maximum numbers of M-Bus devices	CMeX10S: 32 CMeX11S: 64 CMeX12S: 128 CMeX13S: 256
M-Bus search modes	Primary, secondary
Maximum cable length	5000 m (100 nF/km, maximum 90 ohm)
IR Pass Through	Yes, with a maximum of four devices stacked side by side

Approvals

EMC	EN 61000-6-2, EN 61000-6-3, FCC 47 CFR
Safety	EN 62368-1 2018, UL 62368-1:2014 Ed.2, CSA C22.2#62368-1:2014 Ed.2

Environmental specifications

Operating temperature	-30 °C to +55 °C
Operating humidity	5 % to 90 %, non-condensing
Operating altitude	0-2000 m
Pollution degree	Degree 2
Usage environment	Indoors, can be extended with IP67 enclosure for outdoor use
Storage temperature	-40 °C to +85 °C