Banner SureCross DX80 Wireless Networks - Manual (Page 67)

8 SureCross Power Solutions
The SureCross Power Solutions guide lists the various power options for SureCross devices. Also included in this guide is a
battery life calculation for some discrete and analog sensors, examples of solar power installations, and brief instructions
explaining how to measure your sensor's current draw and calculate the estimated battery life for your installation.
8.1 10 to 30V dc Power
For locations with power, the 10–30V dc devices offer an easy-to-install solution for sensing devices.
• 10–30V dc can power more sensors and more types of sensors to obtain the necessary data.
• The number of sensors powered by the SureCross device is only limited by the number of I/O points available.
• The Node may be set to high-speed I/O sample and reporting rates for quicker data collection.
8.2 What is FlexPower ® ?
Banner’s FlexPower technology supplies a true wireless solution by allowing the device to operate using either 10–30V dc,
3.6V lithium D cell batteries, or solar power. This unique power management system can operate a FlexPower Node and an
optimized sensing device for up to five years on a single lithium D cell.
• FlexPower Nodes may be powered from 10–30V dc and use an external battery supply module to provide a battery
back-up solution.
• When a FlexPower Node receives 10–30V dc, it operates like a standard 10–30V dc Node.
• Good applications for FlexPower devices operating from batteries include sensors that require no or very little
power, including dry contacts, RTDs, and thermocouples.
The following FlexPower options are available:
• DX81, a single battery supply module;
• DX81P6, a 6-pack of lithium batteries;
• DX81H, a single battery supply module designed specifically to power the DX99 Intrinsically Safe devices with
polycarbonate housings; and
• BWA-SOLAR-001, a solar power assembly that includes the solar panel, rechargeable batteries, and solar power
controller.
DX81: Single battery supply module
DX81H: Single battery supply module
designed specifically to power the
DX99 Intrinsically Safe devices with
polycarbonate housings
DX81P6: Six-pack battery supply
module
BWA-SOLAR-001: Solar supply;
includes solar panel, rechargeable
batteries, and controller.
8.2.1 Switch Power (with FlexPower)
Efficient power management technology enables some FlexPower devices to include an internal power supply, called switch
power (SP), that briefly steps up to power sensors requiring 5, 10, or 15V power (ideally, 4–20 mA loop-powered sensors).
When the switch power output cycles on, the voltage is boosted to the voltage needed to power the sensor for a specific
warmup time. This warmup time denotes how long the sensor must be powered before a reliable reading can be taken.
After the warmup time has passed, the input reads the sensor, then the switch power shuts off to prolong battery life. The
switch power voltage, warm-up time, and sample interval are configurable parameters.
• To reduce power consumption and extend battery life, slower sample and reporting rates are used. Faster sample
and report rates can be configured, but this will decrease the battery’s life. For details, refer to the DIP switch
configurable parameters for your device.
• The FlexPower switched power management system can operate a FlexPower Node and most sensing devices for
up to five years on a single lithium D cell.
SureCross Wireless I/O Networks
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