MODEL: MD-DNM

MD-DNM SPECIFICATIONS

ES-8108 Rev.8 Page 1/3

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

Lightning Surge Protectors for

Electronics Equipment M-RESTER

LIGHTNING SURGE PROTECTOR FOR DeviceNet

(Load capacity 8 A)

Functions & Features

•Designed specifically to protect devices connected to

DeviceNet from lightning surges

41 (1.61)

114

(4.49)

100

(3.94)

mm (inch)

MODEL: MD–DNM

ORDERING INFORMATION

• Code number: MD-DNM

GENERAL SPECIFICATIONS

Construction: Stand-alone

Connection: Euro type connector terminal

Housing material: Flame-resistant resin (black)

Alarm indicator: Surge absorber failure indicator turns white

when the fuse is blown.

Alarm relay contact: Turns on in an abnormality of surge

absorber element (when the safety fuse is blown).

Rating: 30 V DC @ 0.5 A (resistive load)

Max. switching voltage: 125 V AC/DC

Max. switching power: 25 VA

Min. load: 5 V DC @ 1 mA

ODVA approval: Not approved (No relevant product

category exists for surge protectors.)

INSTALLATION

Operating temperature: -5 to +55°C (23 to 131°F)

Operating humidity: 30 to 90 %RH (non-condensing)

Mounting: Surface or DIN rail

Weight: 400 g (0.88 lb)

Number of modules: Max. 4 modules per network

PERFORMANCE

Discharge voltage (peak voltage)

• Signal line

Line to line: ±5 V min.

Line to ground: ±280 V min.

• Power line

Line to line: 26 V min.

Line to ground: ±280 V min.

• Drain

Line to ground: ±280 V min.

Maximum surge voltage

(The maximum voltage that could pass through M-RESTER.

Protected equipment must be able to withstand this voltage

for very short time period.)

• Signal line

Line to line: ±18 V max.

Line to ground: ±800 V max.

• Power line

Line to line: 120 V min.

Line to ground: ±650 V max.

• Drain

Line to ground: ±800 V max.

Response time: ≤ 0.1 μsec.

Leakage current

• Signal line: ≤ 0.3 mA at ±5 V DC

• Power line: ≤ 0.3 mA at 26 V DC

• Line to ground: ≤ 20 μA at ±280 V DC

Discharge current capacity: 1500 A

Maximum load current

• Signal line: 100 mA

• Power line: 8 A

Internal series resistance

• Signal line: 2 Ω × 2

• Power line: ≤ 0.2 Ω

Maximum line voltage

• Signal line: ±5 V

• Power line: 26 V

Capacitance

• Signal line: Approx. 25 pF @ 100 kHz

• Line to ground: Approx. 25 pF @ 100 kHz