User manual

Table Of Contents
A scrolling display of date and time, motor current, and battery voltage is provided once
the motor reaches full speed. The motor can be abruptly stopped or a velocity down ramp can be
applied. The motor is automatically disabled and the dynamic brake set once the motor is
stopped. An example is shown next.
Default is up
Motor in air, no
load
Ramp
completed,
Stop cmds
Scrolling
display begins
Motor direction (Up/Down) [U] ?
Enter ramp duration [sec] (2 to 60) ? 5
Beginning start ramp.
Full speed reached. Setting low power run mode.
Monitoring motor current and battery voltage.
<R> to begin stop ramp. <CTRL>-<C> to stop and exit.
11/02/2006 12:00:49 17 mA 10.3 V
11/02/2006 12:00:50 17 mA 10.3 V
11/02/2006 12:00:51 17 mA 10.3 V
11/02/2006 12:00:52 17 mA 10.3 V
11/02/2006 12:00:53 17 mA 10.3 V
11/02/2006 12:00:54 17 mA 10.3 V
11/02/2006 12:00:55 17 mA 10.3 V
11/02/2006 12:00:56 17 mA 10.3 V
11/02/2006 12:00:57 17 mA 10.3 V
11/02/2006 12:00:58 17 mA 10.3 V
11/02/2006 12:00:59 16 mA 10.3 V
11/02/2006 12:01:00 16 mA 10.3 V
11/02/2006 12:01:01 16 mA 10.3 V
11/02/2006 12:01:02 17 mA 10.3 V
11/02/2006 12:01:03 17 mA 10.3 V
Motor disabled. Brake set.
Press any key to continue.
Figure 7-38: Motor Operation
Motor currents of 35 to 40mA are typical for an unloaded motor. Currents of 120 to
130mA are expected during a profile where hydrodynamic drag becomes a factor. In the ocean,
where horizontal forcing and ballasting contribute, motor currents of 140 to 250mA have been
recorded.
Option <8> Brake On/Off Change?
This option toggles the motor between free-wheeling and brake set. The motor will spin
freely if ‘Off’ is selected and will resist external torques if the brake is set to ‘On’. The current
setting (On/Off) is displayed in the menu selection title.
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