Whisper 500 Battery Charging Manual
Document #0023 Rev C
SOUTHWEST WINDPOWER
April 2006
24
Optional Equipment
Display (Liquid Crystal Display - LCD
)
Display Installation
The optional LCD display may be mounted either on the Whisper Controller base unit, or in a standard 4” wall
type switch receptacle. Mounting hardware is provided with the display. An ethernet CAT5 cable is provided to
mount the display on the Controller base.
To mount the display directly on the Whisper Controller remove the electronics cover and knock out the sheet
metal insert where the display is to be mounted. Refer to the figure below. There are pre-drilled holes to mount
the display. Use the 8-32 x 3/8”, black oxide, stainless steel screws, and 8-32 nuts with captive star washers
provided to mount the display on the electronics cover.
Connect the display cable to the CAT5 jack located nearest the diversion switch. This will indicate to the dis-
play that it is locally mounted and it will disable its LED features, since these are redundant to those mounted
on the Whisper Controller base. Leave the cover off until the display function is verified.
Remote LCD Display Installation
The display may be located up to 300 meters / 1000 feet from the Whisper Controller. Use Category 5
ethernet cable. The cable with connectors may be purchased at electronics supply stores. Install the display in
the desired location and connect the ethernet cable to the display.
Remove the electronics cover on the Whisper Controller. If necessary, knock out one of the sheet metal plugs
in the Whisper Controller base unit and route the ethernet cable inside the unit. Plug the ethernet cable into
the jack in the lower right corner of the controller board. Leave the cover off until the display function is veri-
fied.
LCD Display Function Verification
Once the display is plugged into the controller base and the batteries are connected to the controller there
should be text displayed on the LCD display. If the display is blank there is a contrast adjusting potentiometer
that can be adjusted to brighten the display. Insert a bladed screwdriver into the hole on the display between
the buttons and the LEDs. Turn the potentiometer to adjust the brightness. If a display is still not visible discon-
nect and reconnect the cable to the display to reset the display. Once display function is verified re-install the
electronics cover on the controller base.
Whisper Controller Display
Whisper Controller
Electronic Cover
Remove Display “Knockout”
In Electronic Cover
