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ABM ABM300-CGC4 Installation Manual
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REV 0.0 April 18, 2023 Page 1ABM300-CGC4RS485 Cellular GatewayInstallation Manual 730 The Kingsway Peterborough, ON K9J6W6 CanadaTel: (705) 740 — 2010 Web: www.abmsensor.comFax: (705) 740 — 2563 E-mail: info@abmsensor.comA – IntroductionThis manual describes the requirements to successfully connectup to eight ABM radar level sensor products in an RS485network hosted by the ABM300 RS485 Cellular Gateway.The Gateway not only acquires data from these sensors but canalso control them. Users have access to remotely change all alarmrelated functions, while ABM experts can remotely recalibrateand fine-tune the sensors for optimized performance in theirrespective environments.The Gateway can also be used to power any DC version ABMradar level sensor (ABM300 series), which can simplify cablerouting in many cases.B - RequirementsCellular NetworkThe key to reliable Gateway operation is suitable cellular phone network access. While urban and developed areastypically provide excellent cellular signal strength, there may be some installations where the cellular signal is weak. Forsuch locations, it is highly recommended that the installer determine an optimal mounting location by using a cell phonedisplay to assess the signal strength.The standard antenna supplied with the Gateway has a magnetic-base and a 6’ (2m) cable that allows mounting on top ofa tank or structure for optimal signal strength while mounting the Gateway in a more sheltered or accessible area. Theoptional SMA-mounted antennas have slightly higher gain. For difficult installations, the ABM Sensor technical team canprovide advice regarding the use of directional antenna and extension cables.Power SupplyThe Gateway requires an input supply voltage of 12 to 30Vdc. Peak power is 6W (1A at 6V down to 0.2A at 30V). Thispeak only occurs for a very short period during cellular transmissions.If the Gateway is connected to supply DC-powered ABM sensors (see Appendix), it supplies an output of ≥18V, providedthe following requirements are met for the supply input voltage (VIN):• For 1 to 3 sensors, VIN ≥ 12Vdc• For 4 sensors, VIN ≥ 15Vdc• For 5 sensors, VIN ≥ 18Vdc• For 6 to 8 sensors, VIN ≥ 21VdcThe number and type of ABM sensors connected to the Gateway determine its total power requirement. Input current up to600mA at 21-30Vdc may be required for an eight sensor configuration. |
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