Introducing MDi Controls’
Supervisory Control and Data Acquisition System for
Compressed Natural Gas (CNG)
This system connects MDi's Controls standard Compressor
and Priority/Sequential Controls to a central PC using
industry proven MODBUS RTU protocol communicating
over a dual, twisted pair cable (RS485). All controller
parameters can be monitored on the PC using color
graphic screens to display valve status, flow status,
pressures, temperatures, levels, etc. Fault alarm
monitoring and automatic remote dialout can also be
added to the system. |
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Dispenser |
Authorization |
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Monitor Hose
on/off status |
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Gas Flow Rate
/ Vehicle Tank Pressure |
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Volume display
in gallons or liter equivalents |
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Total Sale,
Unit price and totalizers |
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Daily, weekly,
monthly report generation |
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Cardlock or
keylock system authorization |
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User password
and identification capability |
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Vehicle mileage
and fuel usage reporting and storage |
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Credit card
authorization |
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Authorization |
Compressor Controls |
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Monitor storage
tank levels |
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All Valves open/closed
status |
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Flow Rates, pressures,
Gas leak levels, temperatures, etc |
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Monitor Start/Stop
sequences |
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All valves and solenoids
status |
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Motor/Engine and
Cooler Fan operational status |
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Pressures, temperatures,
Gas Leak Levels, etc. |
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Fault shutdown monitoring |
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SCADA |
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Multiple
full color graphic screen displays |
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Historical
trending and data logging of any point with user
programmable sample rate |
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Customized
report generation |
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Remote alarm annunciation
using voice, beeper, pager, alphanumeric pager,
etc. |
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Selective and QUED
alarm dialout sequencing |
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Remote PC to PC
linkup for remote SCADA control and monitoring |
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| Motor
Compressor |
| Click on thumbnail to view Larger Image |
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| Valve
Panel Overview |
| Click on thumbnail to view Larger Image |
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