MODEL: MDW5ALW

MDW5ALW SPECIFICATIONS

ES-8218 Rev.4 Page 1/5

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

Lightning Surge Protectors for

Electronics Equipment M-RESTER

LIGHTNING SURGE PROTECTOR FOR

LonWorks

(life monitor)

Functions & Features

• Designed specifically for the network

• Life monitor function helps you to decide when you should

replace the surge protector

• LED and alarm contact output indicate the degradation

and life span of the surge protection circuits

• Easy maintenance thanks to discharge elements installed

on the element module

• No interruption of signal even unplugging head element

• DIN rail mounting

45 (1.78)

97 (3.82)

89 (3.5)

mm (inch)

HEAD ELEMENT

MODEL: MDW5ALW–E

BASE

MODEL: MDW5ALW–B–[1]

ORDERING INFORMATION

Order the both pieces of this surge protector (the head

element and the base), respectively required for the use.

Order the pieces by separate only for replacement.

• Head element

Code number: MDW5ALW-E

• Base

Code number: MDW5ALW-B-[1]

Specify a code from below for [1].

(e.g. MDW5ALW-B-R)

[1] POWER INPUT

AC Power

M2: 100 – 240 V AC (Operational voltage range 90 – 264 V,

47 – 66 Hz)

DC Power

R: 24 V DC

(Operational voltage range 24 V ±10 %, ripple 10 %p-p max.)

P: 110 V DC

(Operational voltage range 85 – 150 V, ripple 10 %p-p max.)

APPLICABLE NETWORK

LonWorks FTT-10A network

This unit is not applicable to LonWorks Link Power network.

GENERAL SPECIFICATIONS

Construction: Plug-in

Degree of protection: IP20 (If the solderless terminals are

covered with insulation tubes.)

Surge protection type: Two-port SPD

Connection

• Transmission, power & grounding: M3 screw terminals

(torque 0.8 N·m)

• Alarm output: Euro Type Connector Terminal

(torque 0.6 N·m)

Applicable wire size

Line, communication: See the 'External Dimensions.'

Screw terminal

• Transmission, power & grounding: Nickel-plated steel

• Alarm output: Tin-plated copper alloy

Housing material: Flame-resistant resin (black)

Indicators

• ALM: Green/Amber/Red tricolor LED

OFF when no surge is detected.

Green ON when surge is detected more than once.

Amber ON when element life is about to expire.

(Prepare to replace)

Red ON when element life is expired or deteriorated

or internal battery is drained. (Replace)

• PWR: Green LED

ON when power is supplyed.

OFF when the base power circuit is in error.

Degradation judged: When the leakage current at the

voltage limiter exceeds approx. 100 μA

Life time judged: When the number of discharges of the

discharge element reaches the expected life span.

Alarm contact: Relay N.C contact

• Element error: ON when life span of the discharge

element has expired, the voltage limiter is degraded,

battery drain or element is removed.

• Base error: ON with power circuit error or power supply

failure

Rated load: 250 V AC @ 1 A (cos ø = 1)

30 V DC @ 1 A (resistive load)

Maximum switching voltage: 264 V AC or 125 V DC