Curtis MultiMode 1228, Manual

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14 Curtis 1228 Manual,
Rev. F
2 — INSTALLATION & WIRING:
Switches, etc.
Battery Discharge Indicator (BDI)
The 1228 controller can drive a 0–5V panel meter to show the battery pack’s
state of charge as a percentage of the amp-hour capacity of the batteries. The
BDI resets to full charge when the battery voltage rises above the programmed
threshold value (see page 31). The batteries must be put through a full charge
cycle with the controller installed before the BDI will begin operation.
The controller must be powered on for the BDI to monitor battery
charging. One way to do this is by turning on the keyswitch. Alternatively,
the controller can be factory-configured with the BDI output “stuffed” to
automatically power up the controller during charging. With this option, you
don’t run the risk of forgetting to turn on the keyswitch and thus not getting
accurate information from the BDI. Note: In order for the stuffed BDI output
to power up the controller, the charger must be connected to the inhibit input;
see page 13.
Horn
The controller’s horn driver—Pin 16—is designed to drive a low current dc
horn at 1 Hz. The horn sounds a warning when the reverse direction is selected
(a series of beep tones) and when the throttle autocalibration feature is being
used (a constant tone). The horn driver sinks a maximum current of 15 mA.
Using a horn with a higher current requirement will damage and disable the
driver.
Circuitry Protection Devices
To protect the control wiring from accidental shorts, a low current fuse (ap-
propriately sized for the maximum control circuit current draw) should be con-
nected in series with the B+ logic supply. A fuse is also recommended for use
in the high power connection from the battery to the controller’s B+ terminal.
This fuse will protect the power system from external shorts and should be
sized appropriately for the maximum rated current of the controller.
Seat Lift Switch
A seat lift switch can be used to short Pins 1 and 3 of the 4-pin connector (J9),
thus activating the throttle-controlled seat lift function. The mating connector
for J9 is a 4-pin Molex Mini-Fit Jr., p/n 39-01-2045.
Seat lift should not be turned on while the vehicle is moving.