• Figure 1. MDCAT External Appearance and Dimensions

  Power-over-Ethernet compatible
• 1000BASE-T / 100BASE-TX / 10BASE-T
• Ideal to protect network devices powered from Ethernet such as webcams
• Conforms to IEC 61643-21, Categories C1, C2

M-System’s model MDCAT is specifically designed to protect communication devices connected via Ethernet LAN from lightning surge entering through network cables.

1000BASE-T and PoE
Multi-stage protection is provided for all four pairs of conductors in Cat. 5e performance (1000BASE-T, 100BASE-TX and 10BASE-T) with minimal interference, tested for up to the maximum 100 meter segment length as defined in the standard. An equal level of protection is ensured for the core-to-core voltage used for PoE.

Both Alternative A and Alternative B configurations are usable to supply power to the protected network device.

Figure 2. MDCAT application examples.		Figure 3. Clustered mounting on a DIN rail.

Figure 4. DIN rail grounding & shortcircuit bar.

Installation Options and DIN Rail Grounding
Compact module can be placed close to PCs, wireless hubs/switches and webcams in rolled-up LAN cables. It can also be snapped on a DIN rail for high-density mounting in a 19-inch rack together with Ethernet switches or inside a control panel with PLCs. Individual earth wiring is not necessary when you ground the DIN rail.

Shield/Grounding Options
Shield terminal, frame grounding, signal grounding may be provided or not depending on the protected devices. The MDCAT is provided as ‘grounding’ mode with a shortcircuit bar connecting the shield and the ground terminals. Removing the bar turns the module to ‘floating’ mode, so that a ground loop problem can be easily fixed. By separating the shield and the ground, the former terminal can be used for individual signal grounding.

Every year lightning destroys millions of dollars of sensitive electronic equipment. Millions more are lost through extended down time and loss of production or mission-critical information.

That’s why companies around the world depend on on-line M-Rester Lightning Surge Protectors. The M-Rester absorbs only the lightning surges with no interruption of instrumentation signal.

Product Bulletins
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Figure 5. Circuit diagram and connection example.

More than 300 units of M-System Loop Powered Indicator model 6DV-B have been used as remote (or local) indicator for combustible gas detector sensors in power generation plants installed by a national gas company.

The sensors are installed in a wide area of the power generation plant, used to detect methane (CH₄) in the atmosphere. It is very important to detect its consistency to avoid unexpected explosions, but these sensors tend to be installed where people cannot access easily, like at the bottom of tanks or pipelines, since methane is heavier than the atmosphere.

Benefits
M-System Model 6DV-B indicators in the flameproof enclosure can be installed as remote display where they are more visible. Since it does not need extra power source but is powered from the 4-20 mA current loop, it could be placed anywhere on the output loop of the sensor.

The LED display, compared from LCD type, is more legible in low-light environments and better in performance even in low temperature.

Furthermore, its stainless steel enclosure option is ideal for use of this product in an environment where corrosive gases are present.

The Model 6DV-B LED indicator is ideal for field installation by its legibility, by its simplicity of installation/wiring and by its reliability and durability in an explosive/corrosive environment.

In August, M-System invited IPSH Sdn. Bhd., a Malaysian distributor. The sales engineer is John Lee Swee Tian whom will be handling the sales and marketing activities in Malaysia.

The duration of the training is 4th to 7th August 2009. It was a fruitful activity which has been very productive and also strengthens the relationship between M-System Co. Ltd. and IPSH Sdn. Bhd.

The product training covers most of the product line:

• Signal Conditioners, Surge Arrestors, Panel Meters, Electronic Actuators, PC Recorder, Multi Power Monitor, Introduction of Power Transducers and Remote I/O.
• Sales Discussion on the past and future market in Malaysia.

The customer bases in IPSH Sdn. Bhd. are mostly on end-users and system integrator. There is a huge potential in the Malaysian market with many Japanese and foreign investors.

Frequency Transmitter Model M3LPA2 (field- and PC-configurable)

Due to the discontinuation of CPU used in the M3LPA, newly designed M3LPA2 is released. The M3LPA2 covers its specifications same as the M3LPA. Until the M3LPA2 obtains UL approval, the M3LPA is available to supply to customers who need UL approval.

M3LPA2 Features:

• Inherited specifications of M3LPA (UL approval pending)
• Max. input frequency increased to 200 kHz
• Complied to RoHS Directive
• M3LPA’s settings downloadable to M3LPA2 (only applied to PC configuration type).

M6 Series Ultra-slim Signal Conditioners

• M6 Series Ultra-slim Signal Conditioners
• Two-wire Transmitters including 27, B3 series and M6xSN loop powered isolators
• 53U Multi Power Monitor
• Energy Consumption Monitoring System including clamp-on current sensors and remote I/Os
• 47 Series and 48N Series Indicators
• M7E Series Digital Limit Alarms
• R6 Series Ultra-slim Remote I/O
• Hot Swappable Fully Isolated Remote I/O introducing various remote I/O series
• 73VR Paperless Recorders
• MSP/MRP Series Electronic Actuators with Network Interface

These are featured products introduced in the new I/O Solution Products catalogue that has just been printed. Access M-System’s Authorized Rep Site to view them and ask your M-System sales contact for copies.