EM-8062 Rev.4 P. 1 / 5
INSTRUCTION MANUAL
LIGHTNING SURGE PROTECTOR FOR
PULSE SIGNAL
(ultra-slim)
MODEL
MD7PL
BEFORE USE ....
Thank you for choosing M-System. Before use, please check
contents of the package you received as outlined below.
If you have any problems or questions with the product,
please contact M-System’s Sales Office or representatives.
■
PACKAGE INCLUDES:
Surge protector ....................................................................(1)
■
MODEL NO.
Confirm Model No. marking on the product to be exactly
what you ordered.
■
INSTRUCTION MANUAL
This manual describes necessary points of caution when
you use this product, including installation, connection and
basic maintenance procedures.
When using this product in potentially explosive atmos-
phere or hazardous (classified) location, you have to follow
the safety procedure to install it. Please refer to “SAFE IN-
STALLATION MANUAL” for each type of certification.
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 cer-
tain extremely high voltages caused by a direct or almost
direct hit by lightning.
M-RESTER must be installed according to this installa-
tion / instruction manual.
GENERAL
■
FUNCTION & FEATURES
•
High discharge current capacity 20 kA (8 / 20 µs), 1 kA
(10 / 350 µs)
•
Ultra-thin 7-mm-wide module can be mounted in high
density
•
Excellent protection employing multi-stage SPD circuits
•
DIN rail mounting and grounding
•
Shield terminal provided
•
Protects two pulse signal lines
■
SPECIFICATIONS
See Table 1.
POINTS OF CAUTION
■
ENVIRONMENT
•
Indoor use.
•
When heavy dust or metal particles are present in the
air, install the unit inside proper housing with sufficient
ventilation.
•
Do not install the unit where it is subjected to continuous
vibration. Do not subject the unit to physical impact.
•
Environmental temperature must be within -25 to +85°C
(-13 to +185°F) with relative humidity within 30 to 90%
RH in order to ensure adequate life span and operation.
•
This unit needs a DIN rail as earth grounding bar. Ox-
ide coating of an aluminium rail may lower the electric
conductivity between this module and the ground. Use a
steel or copper rail.
Table 1. Specifications
MODEL NO.
MD7PL-PFF
MD7PL-PFG
MD7PL-NFF
MD7PL-NFG
Max. continuous operating voltage (Uc)
Line to Line
-30V
+30V
Line to Earth
±160V
Line to SHLD
±160V
SHLD to Earth
±160V
short
±160V
short
Voltage protection level (Up)
Line to Line
-50V
+50V
@6kV (1.2 / 50 µs)
Ling to Earth
±800V
Line to SHLD
±1200V
±800V
±1200V
±800V
SHLD to Earth
±800V
short
±800V
short
Leakage current @Uc
Line to Line
≤5µA
Other sections
≤5µA
Response time
Line to Line
≤4 nsec.
Other sections
≤20 nsec.
Max. discharge current (Imax)
20kA (8 / 20 µs), 1.0kA (10 / 350 µs)
Nominal current (I
N
)
100mA
Internal series resistance
11Ω ±10% per line
056 222 38 18
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