M-Bus 10 Converters Data Sheet

M-Bus Converters (C01 - C04)

C01 C02 C03 C04

Features

Serial ports RS232 and RS485
Up to 10 simultaneously connected slave devices
ESD protection for the RS232/485 data line
3000 VDC isolation protection
Power supply: +12 to +30 VDC or 24 VAC
Transmission speed up to 9600 bps
Tx, Rx and power LED indicators
RS485 embedded termination 120 ohm
Operating temperatures: -40°C to +75°C
DIN-rail mounting
Compact size - single module format (1M)
Dimensions: 90x56.4x17.5 mm
3 years warranty
Customization of OEM is welcomed

Introduction

C01 - C04 family products are reliable M-Bus electrical standard converters. They enable communication in master mode with up to 10 simultaneously connected slave devices. Dedicated EMC integrated circuits guarantee improved connection quality by limiting the impact of interferences typical for an industrial environment.

Specifications

Redisage PN		C01	C02	C03	C04
Converter ports	Serial	1 x passive RS232	1 x active RS232	1 x RS485	1 x active RS232/RS485
Converter ports	M-Bus	1 x M-Bus master with up to 10 x slaves
Power	Voltage	12-30 VDC / 24 VAC
Power	Power	< 1 W
Frame ground connection		yes
Serial interface	RS232	TxD, RxD, GND
	RS485	A, B
	M-Bus	MBus+, MBus -
3000 VDC isolation side		N/A	RS232	RS485	RS232/RS485
1000 VDC isolation side		RS232	N/A
Baud rate		up to 9600 bps
LED indicators		communication Tx, Rx, power
LED indicators		RS232 OK	N/A
RS485 termination		120 ohm manually enabled
Connector	RS232	3-pin terminal block max. 2.5 mm² wire
	RS485	3-pin terminal block max. 2.5 mm² wire
	Power	3-pin terminal block max. 2.5 mm² wire
	M-Bus	3-pin terminal block max. 2.5 mm² wire
Transmission distance	RS485	max. 1,200 m at 9.6 kbps; max. 400 m at 115.2 kbps (Belden 9841 2P twisted-pair cable, if diﬀerent cables are used, the transmission distance may change)
	RS232	max. 15 m at 115.2 kbps
	M-Bus	see: M-Bus max. transmission distance
Mounting and enclosure		DIN rail, plastic PA - UL 94 V0, black/green
Temperatures		-40°C to +75°C operating and storage
Humidity		10 - 90% RH, non-condensing
ESD protection		±4 kV contact discharge / ±8 kV air discharge
Certification		CE, RoHS, EMC, LVD
Norms		61000-6-2 - Immunity standard for industrial environments 61000-6-4 - Emission standard for industrial environments

M-Bus max. transmission distance

Passive vs. Active RS232

Devices equipped with a passive RS232 interface do not include an internal voltage converter. In this case, the connected external device must supply the necessary voltage to drive the RS232 data lines. This means the RS232 port is functional only when connected to a host device capable of providing the required signaling levels.

In contrast, devices with an active RS232 interface feature an integrated voltage converter that generates the appropriate RS232 voltage levels internally. As a result, the data lines are powered by the converter itself, ensuring proper signal levels regardless of the capabilities of the connected device.