Manual

NOTE

Automatic Transfer Relay

Auto Generator Start

The PCL inverter chargers are equipped with a 30A transfer relay switch that switches between

Inverter and Standby mode depending on availability of AC input power. If AC is present, the

transfer relay bypasses up to 30A of the incoming AC power through the inverter to power the

AC loads on the inverter’s output. In the event AC power gets disconnected, the inverter will

power the loads through the battery bank.

The PCL inverter charger series have functions to automatically start and stop a generator for

supplementing charge. The Auto Generator feature starts the Generator with the use of

Normally Closed (NC) contacts of the relay that “opens” when the battery voltage drops to the

programmed value of Program 96, Low Battery Voltage Set-point. The Normally Open (NO)

relay “closes”, and the auto generator start commences the generator to start charging the

battery bank. When the battery is recharged and its voltage rises to the programmed value of

Program 95, High Battery Voltage Set-point The NC (closes) contacts and NO (open) contacts

of relay reset and the Generator will stop / shut down the Generator automatically. The PCL unit

will then transfer back to “Inverting Mode”.

The inverter’s internal AC transfer relay contacts are rated for 30 amps (each leg), the

pass-through current for relay contact must be no greater than 30 amps or damage

to this relay may occur.

To use this to function, an auto start controller must be installed on the generator.

there are three contacts; left to right: Normally Closed (NC) Common (COM),

Normally Open (NO).

NOTE

While the generator is connected, the unit now operates in “Charging Mode” with the

AC power from the Generator charging the batteries as well as providing power to the

AC loads.

Do not store units with auto gen start feature enabled. Generators exhaust

dangerous fumes when running.

WARNING