Automatic Transfer Relay; Auto Generator Start - Renogy PCL Series Manual

Automatic Transfer Relay

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 inverter's internal AC transfer relay contacts are rated for 30 amps (each leg), the
WARNING
pass-through current for relay contact must be no greater than 30 amps or damage
to this relay may occur.

Auto Generator Start

To use this to function, an auto start controller must be installed on the generator.
NOTE
there are three contacts; left to right: Normally Closed (NC) Common (COM),
NOTE
Normally Open (NO).
Do not store units with auto gen start feature enabled. Generators exhaust
WARNING
dangerous fumes when running.
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".
While the generator is connected, the unit now operates in "Charging Mode" with the
NOTE
AC power from the Generator charging the batteries as well as providing power to the
AC loads.
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