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2 ERX350 Installation
2.7 Power Supply Options
2.7 Power Supply Options
The ERX350 has flexible power supply options. The unit can operate from an externally supplied DC
power source or from a 4-cell Alkaline, a 2-cell Lithium, or dual 2-cell Lithium Battery Packs.
External Power Supply
Battery Powered
Battery Life/ Usage Tracking
Replacing the Battery Pack
Low Battery/ External Power Shutdown Mode
User Shelf/ Shutdown Mode
2.7.1 Battery Powered
Connections for the Battery pack are made at the P5 connector on the ERX350 IO Board. There are three
Battery choices for operating the ERX350 from battery power:
40-6050 (4-cell Alkaline) – 5 year operating life under specified conditions
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40-6048 (2-cell Lithium)
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Dual set of 40-6048 (2-cell Lithium) – extended life or heavy usage /comms applications.
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Use the Battery Type (Item 1061) to select the type of Battery pack that is being used to power
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the instrument.
0= 4 Cell Alkaline (default type)
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1= 2 Cell Lithium
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2= 4 Cell Lithium (dual set of p/n 40-6048)
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The Battery voltage is measured on a 10-minute interval. Three consecutively low readings are required to
the trip the Low Voltage Alarm (Item 99) – this is done to help guard against falsely setting alarm due to
a supply glitch.
2.7.1.1 Alkaline Battery Pack
The graphic below shows an alkaline battery pack (40-6050) connected. The ERX350 I/O Board is on the
right.
Note the split connector (two connector pair) provided for the battery connection. Only one is being used
in this photo.
Honeywell
2023
24
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