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The
ASC photovoltaic battery charge controller is ideal
for 1-4 panel systems.  This
rugged unit holds the record for high reliability since
1981. The ASC has a simple, low component count design
that is 100% solid state and is completely sealed against
harsh environments. Lightning protection and a blocking
diode are included. The ASC is UL listed and FM approved
for hazardous locations.
The
ASC is a negative ground, switching shunt controller
available in 12 and 24 volt units up to 16 amps and
6 volt units for 4 amps.
Download
the ASC
data sheet in PDF format.
Download
the ASC
instruction manual.
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Features
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Charge
regulation
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1-16 amp charge current, 12 volt
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8 or 16 amp charge current, 24 volt
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4 amp charge current, 6 volt
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Switching shunt, pulse charging
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Remote temperature compensation (option)
- Adjustable
set-points (option)
Low
voltage disconnect (option)
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10 amp LVD Relay
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Contacts for generator start or alarm
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Design
features
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Encapsulated for protection
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100% solid state charge control
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Reverse leakage protection - blocking diode
- Lightning
protection
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Input noise suppression
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Low power consumption
- Simple,
rugged circuitry
- 12
AWG terminal block
Monitoring and mounting
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Charging light
- LVD
activated light (with LVD)
- Surface
mount
- Suitable
for outdoor mounting
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Switching
shunt regulation
The ASC
will allow maximum array current to flow into the battery
through a blocking diode, lighting the ‘CHARGING’ light (LED),
until the battery voltage reaches the charge termination set-point.
At this point, a shunt transistor will turn on, shorting out
the solar array, turning off the ‘CHARGING’ LED and halting
any further battery charging. When the battery voltage drops
to the charging resumption set-point, the shunt transistor
will turn off and charging will resume. Resultantly, when
the battery voltage is low, charging will be continuous. As
the battery charges up, current will pass into the battery
for progressively shorter periods, until at full charge, it
will pulse current into the battery to achieve and maintain
full charge.
For
larger arrays
The ASC
can be wired in parallel to sub-arrays. This method provides
the added reliability of independant, redundant charge controls
and allows for sequential charging.
Options
A -
Temperature compensation
Temperature
compensation is generally recommended for sealed batteries
or where batteries are expected to experience temperature
variations of more than ±10deg (18degF) from 25degC (77degF)
during periods of charging. A small temperature sensor on
a 10 foot lead monitors battery temperature and adjusts the
charging thresholds according to battery temperature. The
rate of compensation is 5mV/degC (-2.77mV/degF).
E
- Low voltage disconnect / Generator start
The ASC
can be provided with an auxiliary relay. The relay can be
used to protect the battery from low voltage damage by disconnecting
loads or by signaling a standby generator to start or stop
battery charging. The relay is rated for 10 amps and is not
available on 6 volt or 1 amp units. This option provides the
common, normally open and normally closed voltage free contacts
of the relay. The relay consumes 30mA when activated and is
deactivated at 1.92 ± 0.03 volts/cell. A separate terminal
block is provided for connection
F-
Adjustability
The ASC
may be ordered with the adjustment pootentiometer available
to change the charging set-points if required. Load disconnect
set-point are also adjustable for units with the E-option.(LVD/GEN
START)
Electrical
Specification
| PARAMETERS |
UNITS
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NOMINAL
CURRENTS
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1A
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4A
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8A
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12A
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16A
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| Short
circuit current, continuous |
Amps
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1.5
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4
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8
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12
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16
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| Short
circuit current, Max (60 sec) |
Amps
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1.9
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5
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10.5
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15.5
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21
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Model
options
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MODEL
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NOMINAL
VOLTAGE
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NOMINAL
CURRENT
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OPTIONS
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ASC
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6
12
24
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1
4
8
12
16
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A
- Temp Comp
E
- LVD/gen Star
F
- Adj Set-point
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