11.07.2015 Views

5.6MB - M-System

5.6MB - M-System

5.6MB - M-System

SHOW MORE
SHOW LESS

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

Ultra-Slim Lightning Surge ProtectorsSeriesNEW• High-density mounting with 7-mm widemodules• Excellent protection by multi-stage SPD• Max. discharge current 20 kA (8/20 µsec.)• Floating mode for the shield to avoidground loops• DIN rail mounting / grounding• Loop disconnect fuse (option)INDEPENDENT SHIELD TERMINALFloating and grounding modes are selectable in free combination between shield and signal,shield and ground.In the floating mode, the shield is normally insulated from the signal and the ground by a dischargeelement. When an elevated potential is detected by a lightning surge, the discharge elementis immediately activated to prevent discharge at an undesirable location.In the grounding mode, the shield is normally connected via the signal line with a low potentialdifference of several to several tens of volts, and connected permanently to the ground.Each installation or network protocol requires different earth grounding method, such like bothendgrounding, single-end grounding, SG terminal connection. The MD7 Series provide themost suitable grounding type for each application.MD7 Series function digram and wiring example.LOOP DISCONNECT FUSEThe model MD7ST, designed specifically for 4-20mA loop, is provided with fuses to disconnect afailed device from the power bus supplying multipledevices. When the device protected by the MD7STfails in shortcircuit mode, the fuse separates it fromthe power bus and protects the entire system.M-<strong>System</strong>ʼs MD7 Series are lightning and surge protectors for instrumentation signal, network andpower supply. Housed in only 7-mm-wide ultra slim housings, 16 surge protectors lined side by sidetake only 110-millimeter wide space. With the height and depth similar to PLCs and remote I/Os, theyare ideal to be installed in panels and cabinets together with these instruments.Four poles of terminals are equipped on each of surge side and protected side, three for signal andone for shield. By adapting an independent set of shield terminals, floating and grounding can be selectedin free combinations to suit usersʼ applications.HIGH PERFORMANCEThe multi-stage protection combining dischargeelements at the first stage and theseries resistances and diodes ensures tolimit the current flow.The maximum discharge current capacityis as high as 20 kA for an impulse wave of8/20 microseconds. The MD7 Series aretested according to IEC 61643-21 standardto be suitable for categories C1, C2and D1. C1 category requires the surgeprotector to withstand 300 times of averageinduced surges, C2 to withstand 10times of strong induced surges generatedin a harsh environment without electromagneticshielding. D1 category is testedby two direct hits.EASY COMMISSIONING95 (3.74)7 (.28)Wide adaptabillity:4-pole terminals8654Loop disconnectfuse (MD7ST)1 12Power LED37 (MD7DP)Only 7 mmwide3798 (3.86)The MD7 Series are designed for multi-point, ultra-high-density installation. DIN rail mounting/grounding and slantedterminal block help installation and wiring work in such tight space.When the DIN rail is grounded at single point, surge protectors mounted on it are automatically connected to theearth. There is no need of cross-wiring individual module.Thanks to the terminal blocks slightly slanted forward, access from the front side to the terminals is easy even afterthe protectors are mounted on the rail.4Easy wiring: Slanted terminals5268DIN railmounting /groundingunit: mm (inch)8-Port Ethernet Switch with Surge ProtectorLAN PORT SPECIFICATIONSNEW• Optional surge protector function for each port• Protects Ethernet devices from surges entering through LAN cables• Surge protector life monitor function with LED and contact output alarm• Data transfer rate can be fixedStandardsNumber of portsData transfer rateIEEE 802.3, IEEE 802.3u, IEEE 802.3x8; All ports support AUTO-MDIX*10 Mbps (10 BASE-T),100 Mbps (100 BASE-TX);Supports Auto-NegotiationCableMaximum segment lengthSwitchingFull duplex10 BASE-T (STP cable, category 5)100 BASE-TX (STP cable, category 5e)100 metersStore & ForwardPAUSE FramesFlow controlBufferHalf duplex Back pressure64 KBMAC address table 1024* Automatically sensing cable type (straight-through or cross-over).SURGE PROTECTOR PERFORMANCECompliant standardBetween portsPort to GFG (shield) to GVoltage protection levelPort to FG or GBetween each portFG to GEN61000-4-5 level X1kV (combination waveform)**10kV (combination waveform)20kV (combination waveform)***160V min.160V min.160V min.(with the shortcircuit bar removed)** RJ-45 connector contact is out of the scope of this protection.Using twisted-pair (STP) LAN cable is effective to reduce risk of fusing contact.*** With the shortcircuit barFRONT VIEWLINK LED100M LEDLAN Ports (x 8)RJ45 ConnectorStatusDevice status LEDProtector * 1Surge Protector LifeMonitor LED*1. Provided only with the surgeprotector option.10 11

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!