Technical Requirements
December 1, 2017 ©2012 General Electric Corporation. All rights reserved. Page 10
Safety Considerations
The
FLP0412FPx
power supply is intended for inclusion in other
equipment
and the installer must ensure that it is in
compliance with all
the
requirements
of the end application.
This
product is only for inclusion by professional installers within
other
equipment
and must
not
be
operated
as a
stand-alone
pr
oduct
.
The power supply
should
meet Class 1,
IEC60950,
EN60950,
with the
following
deviations:
Nemko
.
UL
60950
(R
ecognized
Component)
C-UL
(Canadian Approval by
UL).
Feature Descriptions
Standby Power Supply
A standby output of 5V in the FLP0412FPx power supply,
comes on when AC input in the operating range is applied.
Remote On/Off
The FLP0412FPx power supply features a TTL-compatible
On/Off control input. The power supply turns ON when the
On/Off input goes low, and turns OFF when the input goes
high. Note that if the On/Off pin is left unconnected, the
power supply main output shall remain off.
V1 Output Voltage Adjustment
The V1 output voltage is adjusted between 11.4V and 12.6V
using a potentiometer (RV1) on the power supply.
V1 Remote Sense
The power supply has both positive and negative remote sense
connections that can be connected to the positive and negative
rails of the main output near the load. The power supply
operates without the remote sense connections being made.
V1 Overcurrent Protection
To provide protection in a fault condition (output overload), the
power supply is equipped with internal current-limiting circuitry
and can endure current limiting continuously. At the point of
current-limit inception, the unit enters hiccup mode. The power
supply operates normally once the output current is brought
back into its specified range.
V1 Overvoltage Protection
Overvoltage protection is a feature of the FLP0412FPx power
supply that protects both the load and the power supply from
an output overvoltage condition. When an overvoltage occurs,
the power supply shuts down and latches off until the
overvoltage condition is removed. It is necessary to recycle
the input to restart the power supply when this protection is
activated.
Overtemperature Protection
The FLP0412FPx also features overtemperature protection in
order to provide additional protection in a fault condition. The
power supply is equipped with a thermal shutdown circuit which
detects excessive internal temperatures and shuts the unit
down. Once the power supply goes into overtemperature
shutdown, it will cool before attempting to restart. The
overtemperature protection circuit will typically trigger when the
unit is operated at 450W output with an ambient temperature of
53ºC and 1m/s (200LFM) airflow.
Input Undervoltage Lockout
At input voltages below the input undervoltage lockout limit,
power supply operation is disabled. The power supply begins
to operate at an input voltage above the undervoltage lockout
turn-on threshold
V1 DC OK
The FLP0412FPx provides a DC OK signal that indicates when
the output has come up and is in regulation. This is an open-
collector type signal that goes high when the output is
available and within regulation.
V1 Power Good LED
A green LED on board the power supply illuminates when the
main output voltage is above 10V.
Paralleling V1 with Active Output Current Sharing
This power supply has optional parallel operation with active V1
output current sharing. Paralleling is accomplished by
connecting the Current Share signals of the power supplies
together. At load current levels above 20%, the output currents
of multiple power supplies will be within ±5% of the full load
value. This feature is an option.