AMSIG Portable Changeable Message Sign Quick Use And Reference Manual - Page 4

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PCMS Power System Overview (- excerpt from Service and Maintenance Manual)

2.3 Solar Panel Assembly

The Solar Panels converts sunlight into electrical power (12VDC) to maintain the charge state of

the Batteries. This re-charging of the Batteries allows the VMS to operate over a longer period

of time before requiring landline (or generator) 120V charging. See Specifications section for

more information on the Solar Panel.

3.4

Quick Re-Charge the Batteries

The Solar power supply system furnished with Amsig VMS includes multiple deep-cycle 6V

Batteries which are uniquely able to withstand the deep discharges that occur periodically

during normal operation. The system has been designed to provide sign operation over all of

the usable state of charge level of the Batteries.

Depending upon several factors (i.e., length & duration of message displayed, the brightness

level, the number of Solar Panels, the amount of available sunlight, the number of Batteries, the

age of the Batteries and the ambient temperature), voltage level of the Battery pack can

eventually drop below 11.2VDC (Default) and the VMS will stop operating. At that time (or

sooner if desired), it will be necessary to recharge the Batteries with 120VAC (from a landline or

generator). An abbreviated summary of steps to charge the Batteries with the provided 75A

Charger are shown below:

•

Turn the VMS system off at Main Power or Sign Display Switch. (Note: The system can

be left on during charging, however, it will require more time to fully recharge the

Batteries.)

•

Bring 120VAC to Trailer and plug into covered Receptacle on right side of Pedestal

Assembly

•

For fully discharged Batteries, charge for a minimum of 72 hours. Batteries in a higher

state of initii:11 charge can be charged for less than 72 hours.

•

When Batteries are fully charged, unplug 120VAC power source from Pedestal.

Batteries are fully charged when the Specific Gravity with a temperature compensated

hydrometer is 1.25:t.010.

Jan 2021 Revision

AMERICAN SIGNAL COMPANY

2755 Bankers Industrial Dr.

Atlanta, GA 30360

Phone: 770-448-6650

Fax: 770-448-8970