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System Overview

• Industrial Computing Platform to decode, pre-process, and buffer monitored system data

• Isolating wide-range power supply, 85 to 230 V AC

• High Impedance, Fault Tolerant, Isolated RS232 Input to allow non-intrusive monitoring

• Isolated RS485 output prevents tampering with RS232 signal or data stream

• 2 x Isolated LAN Ethernet Ports, for monitoring non-safety critical IP data streams, back-office connectivity or master-slave installation with additional S-LX systems.

• Integral SD Card and SIM card for persistent data storage of and provision of cellular connectivity

• Integral LTE cellular modem

• USB port for future monitoring and data storage applications

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• The means of connection to the monitored system will differ dependent on the application.

• Refer to the application specific instructions below for example “overlay” wiring diagrams.

VHLC Level Crossing Applications

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AZLM Axle Counter Applications

MCS Applications

SSI Datalink Applications

Schweizer Flex Life Level Crossing Applications

SEAR II Event Recorder Applications

FUES HABD Applications

Unbox & Mount the S-LX system

• Carefully remove the S-LX system from its packaging

• The system shall already be mounted on supplied loose, with DIN rail, or attached to a 19 inch rack shelf

• Antenna and accessory cables will be packed separately.

• Mount the DIN rail in the desired location, or move the DIN rail mounted equipment onto an alternative rail.

• Fit the S-LX and HZS devices onto the DIN rail. The S-LX device uses a sliding plastic clip. The HZS device, a sprung steel clip.

• The DIN rail may be cut to size. If doing so ensure that all sharp edges are deburred.

• When supplied in a 19 inch rack, install the rack into an appropriate cabinet.

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• Antenna and antenna cable are supplied separately.

• Mount the antenna external to the building

• Never mount antenna inside an equipment enclosure or building

• The antenna must be placed a minimum of 3 meters from sensitive electronic signalling equipment such as SSI.

• The antenna features a magnetic mounting base. If this is not suitable, contact MPEC to discuss alternate mounting arrangements.

• The antenna is to be mounted upright, with the “whip” element pointing skyward.

• Ideally the antenna shall be placed clear of large structures and earthworks.

• Bear in mind during placement that the antenna may need relocating during commissioning if inadequate signal strength is available.

• A minimum12 minimum 12 mm circular aperture is required to route the antenna cable into the building / enclosure.

• If the building or enclosure structure must be pierced to run the antenna cable, ensure this is done in a responsible manner using appropriate tools. Any new openings must be appropriately sealed against moisture ingress and rodent attack.

• route the antenna cable using appropriate cable management from antenna to SLX S-LX device.

• Avoid sharp radius bends and never bend the antenna cable tighter than a 13mm radius.

• Avoid running the antenna cable directly parallel and close to sensitive digital signal cables, such as SSI data links.

• Do not attempt to shorten or lengthen the cable unless competent to do so and in possession of the appropriate tools and connectors.

• MPEC offer a range of antenna cable lengths, so please contact MPEC if the standard 5m 10m cable is inappropriate.

• Hand tighten the hexagonal SMA connector to terminal W1 of the S-LX compute module. Do not use tools to over-tighten.

• Hand tighten the round TNC connector to the antenna base. Do not use tools to over-tighten.

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• The HZS PSU and Port Isolator plug connector features six terminals:

  • 2 x BX terminals. The terminals are electrically common and accept the “live” connection to the incoming AC power supply.

  • 2 x NX terminals. The terminals are electrically common and accept the “neutral” connection to the incoming AC power supply.

  • 2 x E terminals. The terminals are electrically common and provide a protective earth connection to the incoming AC power supply.

  • The electrically common terminals allow power circuits to be daisy-chained to multiple S-LX systems whilst only occupying a single primary busbar connection.

• Each terminal features a spring-cage contact to prevent accidental contact with hazardous live voltage. Guidelines for successful and safe connection are as follows

  • Maximum conductor area of cable should be 1.5 mm square

  • Cables shall always be fitted with ferrule crimps of the appropriate size. Example crimps are:

    • 0.75 mm2 cable: WEIDMULLER H0,75/16 W SV INSULATED FERULE. P/N: 9025860000 

    • 1.5 mm2 cable: WEIDMULLER H1,5/10 UNINSULATED FERULE. P/N: 0186500000

  • Ferrule crimps shall be fitted using a “square end crimper”, such as WEIDMULLER PZ 10 SQR WIRE END FERULE CRIMPER. P/N: 1445080000

  • A tool is required to release the spring inside the connector to allow cable insertion

    • Straight 2.5 mm flat bladed screwdriver

    • Angled flat bladed screwdriver - https://www.wago.com/gb/tools/operating-tool/p/210-658

  • When fully inserted, no exposed conductor or ferrule should be visible to prevent electrical shorting and shock risk

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• VHLC Level Crossing Applications

• HXP3 Track Circuit Applications

• Westronic S2 TDM Applications

• Westronic 1024 TDM Applications

• SSI Technicians Terminal Applications

• AZLM Axle Counter Applications

• MCS Applications

• SSI Datalink Applications

• Schweizer Flex Life Level Crossing Applications

• SEAR II Event Recorder Applications

• FUES HABD Applications

Commissioning

• Commissioning of the device can be split into three stages.

• If issues are discovered, refer to the Trouble Shooting & Maintenance section.

• S-LX Indication summary:

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Energise Power Supply

• Energise the main power supply and check:

  • HZS device Power Indication illuminates

  • S-LX device Power Indication illuminates

  • S-LX device then begins boot sequence. This can take up to one minute

  • S-LX Run Indication begins to flash. The should continue to flash whilst the device is operating

  • The S-LX Error Indication will illuminate during boot.

  • The S-LX Error indication will then extinguish once the boot sequence is complete

Check for Logged Data Reception

• The S-LX system will be pre-configured to work out-of-the-box with the application and site for which it was purchased. The steps below are to verify correct wiring of the connections

RS232 Connections

• The TX and RX indications will illuminate on the HZS device

• The Disk access indication on the S-LX device will flash intermittently

Ethernet Connections

• The Link indication (Green) will illuminate and Activity indications (yellow) will blink on connected Ethernet ports

• The Disk access indication on the S-LX device will flash intermittently.

RS422 Connections

• The Downlink indication on the TCC-120i will illuminate

• The Disk access indication on the S-LX device will flash intermittently.

USB Connections

• The USB indication on the S-LX will illuminate

• The Disk access indication on the S-LX device will flash intermittently.

Check for Cellular Modem Transmission

• The S-LX system will be pre-configured to work out-of-the-box with the application and site for which it was purchased. The steps below are to verify correct wiring of the connections and antenna placement.

• All 3 signal strength indications should ideally be illuminated.

• A single illuminated indicator may be tolerable, but improvement should be considered if practicable.

• In the case all signal strength indicators being dark, the antenna may need re-siting, although other troubleshooting steps may also be necessary.

• The server indication will illuminate when the S-LX successfully connects to Centrix