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Westermo RM-505U-K User Manual

Page 35

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man_505U-K_1.4.doc

Dec 2008

ELPRO Technologies Pty Ltd 2008

Page 35

4.6 Supply Voltage

The supply voltage may be mapped as an internal analogue input. The 16 bit value
corresponds to 0-30V. There is no analogue sensitivity for this measurrment - it is only
transmitted based on the configured update time. The measurement is taken every time the
505K transmitter operates.

The supply voltage also has user-configurable setpoints to determine the Supply Low Volts
alarm. These setpoints can be set from the SetPoint option. The 905K module will shut-
down when the supply voltage reaches 90% of the “low volts” value. We recommend the
following setpoint values:

Battery Type

Low Volts Setpoint

Shut-down Voltage

BU-5-2 Battery Pack

6.0

5.4

12V “Gell-cell”

11.2

10.0