M-system MDPA-24 Bedienungsanleitung

MODEL: MDPA-24

MDPA-24 SPECIFICATIONS ES-8258 Rev.8 Page 1/4

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

Lightning Surge Protectors for

Electronics Equipment M-RESTER

LIGHTNING SURGE PROTECTOR FOR

STANDARD SIGNAL LINE & PULSE USE

Functions & Features

• Designed specifically for 4 – 20mA DC and

pulse signal line including both 4-wire and 2- wire

transmitters

• Life monitor function helps you to decide when you should

replace the surge protector; reduces maintenance and

prevents downtime

• Pressing CHK (Check) button confirms the degradation

and life span of the surge protection circuits with LEDs

• Absorbs surges only without affecting instrumentation

signal

• No interruption of signal by unplugging surge protector

element

M·RESTER

MADE IN JAPAN

SER.NO

BAT

ALM

MODEL

MODEL: MDPA–24[1]

ORDERING INFORMATION

• Code number: MDPA-24[1]

Specify a code from below for [1].

(e.g. MDPA-24/BN/Q)

• Specify the specification for option code /Q

(e.g. /C01)

[1] OPTIONS (multiple selections)

Configuration

blank: With Base (model: SK-2E) included

/BN : Element only for replacement

(Not selectable with DIN rail mounting adapter)

DIN Rail Mounting Adapter

blank: Without

/A33: With adapter (model A-33)

Other Options

blank: none

/Q: Option other than the above (specify the specification)

SPECIFICATIONS OF OPTION: Q

COATING (For the detail, refer to M-System's web site.)

/C01: Silicone coating

/C02: Polyurethane coating

/C03: Rubber coating

RELATED PRODUCTS

• Base (model: SK-2E)

GENERAL SPECIFICATIONS

Construction: Plug-in

Connection: M4 screw terminals (torque 0.8 N·m)

Screw terminal: Nickel-plated steel

Housing material: Flame-resistant resin (black)

Indicators: Activated by CHK (Check) button, see the status

table shown below.

BAT: Green LED

ALM: Red LED

Degradation judged: When the leakage current at the

voltage limiter exceed approx. 7.5 μA.

Life time judged: When the number of discharges of the

discharge element reaches the expected life span.

CHK button: Push button; momentary

Battery: Lithium; No recharge or replacement available.

Battery life: 10 years (when used ≤ 2 minutes/month)

Normal

: ON

*1 : With pulsating line signal or that containing ripples, the LED may

flicker or blink when the voltage limiter is degraded.

: OFF

Normal

Discharged

Normal

Near End

End of Life

Unable to Judge

Normal

Degraded*1

No Need

Near

BatteryALMBAT Discharge

Element

Voltage

Limiter Replacement

Immediately

Required

INSTALLATION

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

Operating humidity: 30 to 85 %RH (non-condensing)

Mounting: Surface or DIN rail

Weight: 150 g (0.33 lb), standard

175 g (0.39 lb), with DIN rail mounting adapter

PERFORMANCE

Max. continuous operating voltage (Uc):

Line to line: 30 V

Line to earth: ±160 V

Voltage protection level (Up):

• @ 1 kV (100 A)

Line to line: 45 V

Line to earth: ±650 V

MODEL: MDPA-24

MDPA-24 SPECIFICATIONS ES-8258 Rev.8 Page 2/4

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

• @ 2 kV (1 kA)

Line to line: 50 V

Line to earth: ±650 V

Response time:

Line to line: ≤ 4 nsec.

Line to earth: ≤ 20 nsec.

Leakage current:

Line to line: ≤ 5 μA @ 30 V DC

Line to earth: ≤ 5 μA @ ±140 V DC

Max. discharge current (Imax): 5000 A (8 / 20 μs)

Nominal current (IN): 100 mA

Internal series resistance: 20 Ω ±10 % (including return)

Capacitance @ 1 MHz:

Line to line: ≤ 1000 pF

Line to earth: ≤ 100 pF

Surge protection: IEC 61643-21 Categories C1, C2, D1

EXTERNAL VIEW

–

P+

–

S+

BAT Indicator LED

ALM Indicator LED

CHK Check Button

CONNECTION EXAMPLES

M-RESTER

CURRENT LOOP SUPPLY

CENTRAL

STATION

FIELD

(PROTECTED

EQUIPMENT)

FROM

FIELD

CENTRAL

STATION

–

P–

P+

S–

S+

P–

P+

S–

S+

CABLE

–

MODEL: MDPA-24

MDPA-24 SPECIFICATIONS ES-8258 Rev.8 Page 3/4

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

GROUNDING

M-RESTER PROTECTED

EQUIPMENT

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.

EXTERNAL DIMENSIONS & TERMINAL ASSIGNMENTS unit: mm (inch)

P–P+

S–S+

23.5 (.93)

80 (3.15)

2–5 (.20) dia.

MTG HOLE

90 (3.54)

100 (3.94)

4–M4 TERMINAL SCREW

27 (1.06)53 (2.09)

80 (3.15)

27 (1.06)53 (2.09)

80 (3.15)

45 (1.77)

HEAD ELEMENT

BASE

GROUND TERMINAL (G)

(used as mounting bracket)

P–P+

S–S+

23.5 (.93)

80 (3.15)

90 (3.54)

100 (3.94)

4–M4 TERMINAL SCREW

■ WITH DIN RAIL MOUNTING ADAPTER

■ STADARD

DIN RAIL

35mm wide

45 (1.77)

4 (.16)

8.5

(.33) [3.3 (.13)]

2–M4 MOUNTING SCREW

(used as ground terminal (G))

1 (.04)

MODEL: MDPA-24

MDPA-24 SPECIFICATIONS ES-8258 Rev.8 Page 4/4

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

MOUNTING REQUIREMENTS unit: mm (inch)

25 (.97) min. 2–M4 SCREW

90 (3.54)

SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM

BASE

CABLE

SIDE

S+

–

ELEMENT

Battery

CHK

Check

Button

Voltage Limiter

GROUND TERMINAL

(used as mounting attachment)

Surge

Counter

Leakage Current

Detector

BAT

(green)

ALM

(red)

EQUIPMENT

SIDE

Discharge

Element

* The zenor diode has polarity.

Zero-cross signal cannot be connected.

Specifications are subject to change without notice.

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