MDW2A-4R-P [MSYSTEM]
Lightning Surge Protectors for Electronics Equipment M-RESTER;
| 型号： | MDW2A-4R-P |
| 厂家： | 
M-SYSTEM |
| 描述： | Lightning Surge Protectors for Electronics Equipment M-RESTER |
| 文件： | 总4页 (文件大小：135K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MODEL: MDW2A-4R
Lightning Surge Protectors for
Electronics Equipment M-RESTER
GENERAL SPECIFICATIONS
Construction: Plug-in
Connection: M3 screw terminals (torque 0.8 N·m)
Screw terminal: Chromated steel
LIGHTNING SURGE PROTECTOR FOR
Housing material: Flame-resistant resin (black)
Alarm indicators
RS-485 / RS-422
(life monitor)
PWR: The green LED turns on while the power is
supplied.
Functions & Features
•Designed specifically for RS-485 or RS-422 transmission
line
ALM: Tricolor LED (green/amber/red)
•Remains off when the power supply is first turned on.
•Green: The unit has received one or more surges.
•Amber: Replacement is recommended.
•Red: The life span has ended.
•Life monitor function helps you to decide when you should
replace the M-RESTER; reduces maintenance and prevents
downtime
•LED indicator and alarm contact output indicate the
degradation and life span of the surge protection circuits
Degradation judged: When the leakage current at the
voltage limiter exceed approx. 0.25 mA.
Life time judged: When the number of discharges of the
discharge element reaches the expected life span.
Alarm contact: The N.C. contact is on when the life span of
the discharge elements has ended, when the voltage limiter
has degraded or when the power supply is removed.
Rating: 125 V AC @ 0.5 A (cos ø = 1)
29.5 (1.16)
Model
88.5
(3.48)
30 V DC @ 1 A (resistive load)
Maximum switching voltage: 125 V AC or 110 V DC
Maximum switching power: 62.5 VA or 30 W
Minimum load: 5 V DC @ 10 mA
PWR
ALM
124
(4.88)
mm (inch)
INSTALLATION
Power consumption
MODEL: MDW2A–4R–[1]
•AC:
Approx. 3 VA at 100 V
ORDERING INFORMATION
• Code number: MDW2A-4R-[1]
Specify a code from below for [1].
(e.g.MDW2A-4R-M2)
Approx. 4 VA at 200 V
Approx. 5 VA at 240 V
•DC: Approx. 2 W
Operating temperature: -5 to +55°C (23 to 131°F)
Operating humidity: 30 to 90 %RH (non-condensing)
Mounting: Surface or DIN rail
Weight: 200 g (0.44 lb)
[1] POWER INPUT
AC Power
M2: 100 – 240 V AC (Operational voltage range 85 – 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
RS-485 or RS-422 conformed network: Modbus, SINNET,
MsysNet
MDW2A-4R SPECIFICATIONS
ES-8215 Rev.2 Page 1/4
http://www.m-system.co.jp/
MODEL: MDW2A-4R
PERFORMANCE
Insulation resistance: ≥ 100 MΩ with 500 V DC
(surge protector circuit to alarm output to power)
Dielectric strength: 2000 V AC @ 1 minute
(surge protector circuit to power to ground)
BETWEEN LINE TO
LINE TO
LINES
SG
GROUND
Discharge voltage
5V
5V
160V
7 to 8
7 / 8 to 9 (7 / 8 / 9 to G)
25V 600V
4 / 5 to 6 (4 / 5 / 6 to G)
Max. surge voltage
Leakage current
*
25V
4 to 5
≤0.2mA
@ 5V
≤0.2mA
@5V
≤10µA
@ 160V
7 to 8
7 / 8 to 9 (7 / 8 / 9 to G)
Response time
≤4 nsec.
≤4 nsec.
≤20 nsec.
Capacitance
(approx.)
500 pF
500 pF
100 pF
@10 kHz
@10 kHz
@10 kHz
Discharge current
Max. load current
Internal series resist.
Max. line voltage
5000A (8 / 20 µsec.)
100mA
approx. 5Ω including return
5V
Input attenuation -1 dB max. @DC...1 MHz, Z0 = 110Ω
*ThemaximumvoltagethatcouldpassthroughM-RESTER.
Protected equipment must be able to withstand this voltage
for a very short time period.
EXTERNAL VIEW
PWR indicator (green)
ALM indicator
MDW2A-4R SPECIFICATIONS
ES-8215 Rev.2 Page 2/4
http://www.m-system.co.jp/
MODEL: MDW2A-4R
CONNECTION EXAMPLES
■ DUAL-CORE CABLE
M-RESTER
Protected Device
+
7
8
4
5
6
1
2
–
SG
U
9
*3
ALARM
OUTPUT
*1
10
11
V
Power
Input
3
G
*4
*2
Surge Protector
for Power Supply
Grounding
U
To Power Source
V
G
■ TRIPLE-CORE CABLE
M-RESTER
Protected Device
+
7
8
4
5
6
1
2
–
SG
U
9
*3
*1
10
11
ALARM
OUTPUT
V
Power
Input
3
G
*4
*2
Surge Protector
for Power Supply
Grounding
U
To Power Source
V
G
*1. No need of this part of the wiring if the cable has no shield.
*2. Ground the shield via Terminal 3 if necessary.
*3. No need of wiring to Terminal 6 if the protected device has no SG (Signal Ground) Terminal.
*4. Cross wire from the protected device’s G terminal to the surge protector’s Terminal 3.
If the protected device has no G terminal, ground only the surge protector.
GROUNDING
PROTECTED
EQUIPMENT
M-RESTER
G
G
GROUNDING
(100 ohms or less)
CROSSOVER WIRE
A crossover wire between M-RESTER ground and ground or metallic
housing of equipment is required for protection.
If the protected equipment has no ground terminal, ground the
M-RESTER only.
MDW2A-4R SPECIFICATIONS
ES-8215 Rev.2 Page 3/4
http://www.m-system.co.jp/
MODEL: MDW2A-4R
EXTERNAL DIMENSIONS & TERMINAL ASSIGNMENTS unit: mm (inch)
6 (.23)
DIN RAIL
35mm wide
3
2
5
1
4
6
2–4.2x5
(.17x.20)
MTG HOLE
6 (.24) deep
9
8
7
11–M3
SCREW
11 10
22 (.87)
29.5 (1.16)
21.5 (.87) 10 (.39)
84 (3.31)
114 (4.49)
[4 (.16)]
• When mounting, no extra space is needed between units.
SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM
2 Ω
0.5 Ω
+
–
7
8
4
5
+
–
Voltage Limiter
LINE
LINE
2 Ω
0.5 Ω
Discharge
Elements
Surge
Side
Protect
Side
9
6
SG
SG
ALM LED
PWR LED
10
11
U(+)
POWER
V(–)
Surge
Counter
Leakage Current
Detector
CT
1
2
3
ALARM
OUTPUT
Ry
G
Base Socket
Specifications are subject to change without notice.
MDW2A-4R SPECIFICATIONS
ES-8215 Rev.2 Page 4/4
http://www.m-system.co.jp/
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