M-system MD6x-24 Instruction Manual

INSTRUCTION MANUAL
LIGHTNING SURGE PROTECTOR FOR STANDARD
SIGNAL LINE & PULSE USE
BEFORE USE ....
Thank you for choosing M-System. Before use, please check
the 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:
Lightning 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.
SEN TRONIC
(conduit mount, weather-proof)
GENERAL
■ FUNCTION & FEATURES
• Designed specifically for 4 – 20mA DC and pulse signal
line including both 4-wire and 2-wire transmitters
• Direct mount in a wiring conduit of outdoor enclosures
• Absorbs surges only without affecting instrumentation
signal
■ SPECIFICATIONS
Discharge voltage
(peak voltage)
Max. surge voltage*
Leakage current
Max. line voltage
Capacitance @1 kHz
Response time
Discharge current capacity
Max. load current
Internal series resistance
*1. The maximum voltage that could pass through the surge
protector. Protected equipment must be able to withstand
this voltage for a very short time period.
POINTS OF CAUTION
■ GENERAL PRECAUTION
• Before you remove the unit or mount it, turn off the signal
input and the power supply fed to the connected devices
for safety.
■ ENVIRONMENT
• Do not install the surge protector where it is subjected to
continuous vibration. Do not subject the unit to physical
impact.
• Environmental temperature must be within -40 to +85°C
(-40 to +185°F) in order to ensure adequate life span and
operation.
■ INSULATION RESISTANCE TEST
• Before conducting an insulation test, remove the unit
from the protected signal line. Use an insulation tester of
125V DC at the maximum. If you use a higher-rated test-
er, the discharge elements will start discharging, which
will be detected falsely as insulation failure.
■ AND ....
• We recommend that you keep spare surge protectors so
that you can replace them when necessary.
056 222 38 18 mailbox@sentronic.com
AG
MD6x-24
MODEL
MD6x-65
LINE TO LINE
MD6x-24 MD6x-65
30V min. 70V min.
40V max. 100V max. ±650V max.
1
≤ 5µA ≤ 5µA
@30V DC @70V DC
30V DC 70V DC
≤ 2500pF ≤ 2500pF
≤ 4 nsec. ≤ 4 nsec.
10000A (8 / 20 µs)
100mA
Approx. 22 Ω including return
EM-8283-A Rev.4 P. 1 / 6
www.sentronic.com
LINE TO
GROUND
±160V min.
≤ 5µA
@±130V DC
----
≤ 100pF
≤ 20 nsec.