M-system MD7LC Instruction Manual

INSTRUCTION MANUAL
LIGHTNING SURGE PROTECTOR FOR
STRAIN GAUGE
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.
Table 1. Specifications
MODEL NO.
Max. continuous operating voltage (Uc)
Voltage protection level (Up)
Leakage current @Uc
Response time
Max. discharge current (Imax)
Nominal current (I )
N
Internal series resistance
*1. Measured across the terminal 2 and DIN rail, the terminal 7 and DIN rail.
SEN TRONIC
(ultra-slim)
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 strain gauges and transmitters
■ SPECIFICATIONS
See Table 1.
Output voltage
Excitation
Line to Earth*
1
Output voltage ±15V @0.2kV (1.2 / 50 µs)
Excitation 30V @0.2kV (1.2 / 50 µs)
Line to Earth* 1 ±30V @0.2kV (1.2 / 50 µs)
Output voltage
Excitation
Line to Earth*
1
100A (8 / 20 µs)
056 222 38 18 mailbox@sentronic.com
AG
MODEL
MD7LC-0
±0.2V
15V
±15V
±40V @6kV (1.2 / 50 µs)
±50V @6kV (1.2 / 50 µs)
≤0.2µA
≤2µA
≤2µA
≤4 nsec.
20kA (8 / 20 µs), 1kA (10 / 350 µs)
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www.sentronic.com
MD7LC
MD7LC-1
50V @6kV (1.2 / 50 µs)
250mA
1.5Ω ±10% per line
EM-8063 Rev.3 P. 1 / 4