Configure Low Power Use - ABB RMC-100 User Manual

4. Type into LCD Backlight timeout the number of seconds the backlight remains lit during
inactivity before it turns off.
Click Send to save the station settings.
5.
5.2

Configure low power use

This procedure defines RMC sleep mode settings. The RMC goes into sleep mode when the power
source drops below a specified voltage for a specified period of time. This prevents the battery from
becoming so depleted that the RMC does not function properly. Sleep mode preserves the historical
data the RMC collected before going to sleep. The RMC does not calculate new flow measurements
during sleep mode.
IMPORTANT NOTE: Launch PCCU and connect to the RMC to wake it up from sleep mode. The
RMC stays awake while PCCU is connected. If the battery voltage is below the specified voltage
when PCCU closes, the RMC returns to sleep mode after the time specified in Sleep Mode Hold-off
Time (sec).
To define low power use settings:
1. Display the Station Setup screen and scroll down to Configuration for Low Power Use
5-2).
2. Type the voltage that initiates communication cut-off into Remote Comm Cutoff Voltage.
Figure 5-2: Low power use default settings
IMPORTANT NOTE: The RMC uses a specified voltage to shut down the communication ports and
communication equipment (radio) that it powers. This reduces power consumption, so the battery
can recover.
Except for the remote communications, the RMC still functions when the RMC power level stays at
the specified voltage.
Leave RMCs with a 12-volt SLA battery at the default Remote Comm Cutoff Voltage setting of 11.9
volts. RMCs powered with higher voltages, for example with a 24-volt power supply, can have a
higher cutoff voltage.
Communication resumes when the voltage level returns to or exceeds the specified shut-down
voltage.
3. Type the voltage for the RMC to enter sleep mode into Sleep Mode Entry Voltage.
IMPORTANT NOTE: The RMC uses a specified voltage to enter sleep mode.
Leave the default Sleep Mode Entry Voltage setting of 10.9 volts for RMCs with a 12-volt SLA
battery. RMCs powered with higher voltages, for example with a 24-volt power supply, can have a
higher sleep mode voltage setting.
In sleep mode, the RMC no longer functions. It only saves the last data values.
The RMC resumes function after a specified time.
4. Type the number of seconds the RMC has low power before it enters sleep mode into Sleep
Mode Hold-off Time (sec).
5. Type into Wake Up Time the hours, minutes and seconds of delay before the RMC reactivates.
Or, click the up and down arrows to increase or decrease the time.
6. Click Wake Up Time Mode and select an option (Time from Start of Sleep or Time of Day)
to end sleep mode.
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