MODEL: MDP-24-1

MDP-24-1 SPECIFICATIONS

ES-8119 Rev.22 Page 2/4

https://www.m-system.co.jp/

STANDARDS & APPROVALS

EU conformity:

EMC Directive

EMI EN 61000-6-4

EMS EN 61000-6-2

RoHS Directive

Approval:

Protectors for Data Communications and Fire

Alarm Circuits (UL 497B)

CONNECTION EXAMPLES

M-RESTER

IN

M-RESTER

CURRENT LOOP SUPPLY

(protected device)

2-WIRE TRANSMITTER

(protected device)

CENTRAL

STATION

FIELD

G

FROM

FIELD

TO

CENTRAL

STATION

+

–

P–

P+

S–

S+

P–

P+

S–

S+

CABLE

G

G

G

+

–

■ PROTECTING TWO-WIRE SIGNAL LINES

■ PROTECTING ELECTRONIC INSTRUMENTS’ I/O

P+

G

P–

S+

S–

+

–

+

–

U

V

G

Receiver

(protected device)

+

–

+

–

U

V

G

Transmitter

(protected device)

M-RESTER

S+

G

S–

P+

P–

M-RESTER Signal

Line

*1

*2

*2

*1. Install a circuit protector when the transmitter output current exceeds 100mA.

*2. The M-RESTER is designed in particular to protect signal lines.

To protect power supply lines, install other types of surge protectors.

GROUNDING

M-RESTER

PROTECTED

EQUIPMENT

G

G

CROSSOVER WIRE

GROUNDING

(100 ohms or less)

A crossover wire between M-RESTER ground and the ground or

metallic housing of the equipment is required for protection.

If the protected equipment has no ground terminal, ground the

M-RESTER only.

When the M-RESTER is mounted with DIN Rail Mounting Adapter,

connect the grounding wire to the mounting screw of the M-RESTER.