MDR-8
P. 1 / 2
EM-8131 Rev.6
5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN
Phone: +81(6)6659-8201 Fax: +81(6)6659-8510 E-mail: [email protected]
BEFORE USE ....
Thank you for choosing M-System. Before use, check the package
you received as below.
If you have any problems or questions on the product, please
contact M-System's Sales Office or representatives.
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PACKAGE INCLUDES:
Lightning surge protector ................................................. (1)
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MODEL NO.
Check that model No. described on specification label is exactly
what you ordered.
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INSTALLATION / INSTRUCTION MANUAL
This manual describes necessary points of caution when you
use this product, installation, and basic maintenance procedure.
LIMITATION APPLICABLE TO M-RESTER
The M-Rester will protect electronics equipment from damage
caused by lightning by absorbing most of the surge voltages.
However, M-Rester may not be effective against certain
extremely high voltages caused by a direct or almost direct
hit by lightning.
M-Rester must be installed according to this installation /
instruction manual.
GENERAL
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FUNCTION & FEATURES
• Designed specifically for ON-OFF signals, protecting semicon-
ductor switches used for ON-OFF outputs from the computer
or PLC from lightning surge damage that enters on the wiring
between these instruments • 8 channels • Most convenient as
junction board • Minimum mounting space
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SPECIFICATIONS
BTWN LINES
LINE TO COM
LINE/COM TO G
Discharge voltage
±30V min.
30V min.
±60V min.
Max. surge voltage*
±40V max.
40V max.
±650V max.
Leakage current
≤5µA
@±30V DC
≤5µA
@30V DC
≤5µA
@±60V DC
Response time
≤0.1 µsec.
Discharge current
1000A (8 / 20 µsec.)
Max. load current
100mA
Int. series resistance
approx. 100Ω
*The maximum voltage that could pass through M-RESTER. Pro-
tected equipment must be able to withstand this voltage for a very
short time period.
POINTS OF CAUTION
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ENVIRONMENT
• Indoor Use
• When heavy dust or metal particles are present in the at-
mosphere, install M-RESTER inside proper housing and
ventilate it.
• Do not install the M-RESTER where it is subjected to
continuous vibration. Do not apply physical impact to the
M-RESTER.
• Environmental temperature must be within -5 to +55°C
(23 to 131°F) and relative humidity within 30 to 90% RH
in order to ensure adequate life span and operation.
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DIELECTRIC STRENGTH TEST
• DO NOT perform dielectric strength tests with wires con-
nected to the unit. Otherwise the element will start discharg-
ing at discharge voltage, which can cause insulation failure.
Be sure to return the wires after the test.
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AND ....
• We recommend that you keep spare M-RESTERs so that
you can replace them when necessary.
• Lightning surge can enter not only through signal lines
but also through power supply lines. We recommend that
you also use the Lightning Arrester for Power Lines for
sufficient protection.
COMPONENT IDENTIFICATION
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REAR VIEW
SURGE
SIDE
S1
S2
S3
S4
S5
S6
S7
S8
COM
GND
PROTECT
SIDE
P1
P2
P3
P4
P5
P6
P7
P8
COM
GND
Body
Specification Label
INSTRUCTION MANUAL
MULTI M-RESTER
MODEL
MDR-8
