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CAUTION: The 2512 is protected against reverse battery and PV polarity, and swapped PV and battery connections, but will be
damaged by reverse battery to the PV terminals. Transient voltage lightning protection is provided, but steady state voltage in
excess of 35VDC on the battery or PV terminals will damage the unit. Damage of either type voids the limited warranty.
ELECTROSTATIC HANDLING PRECAUTIONS
All electronic circuits may be damaged by static electricity. To minimize the likelihood of electrostatic damage, discharge yourself by touching a water faucet
or other electrical ground prior to handling the 2512 and avoid touching components on the circuit boards. The risk of electrostatic damage is highest when relative
humidity is below 40%.
SELECTING PV MODULES
Voltage, current and power produced by Photovoltaic (PV) modules fluctuate widely with operating conditions. As a result a set of test conditions
referred to as Standard Test Conditions (STC) are used to rate modules in a meaningful manner and accurately predict real world performance. STC
ratings are not maximum or optimal ratings. Conditions can be present where V
Code and our recommendations call for 1.25 derating of both V
Key PV module specifications;
P
Maximum power in watts (P
MAX
V
Voltage with module open circuit (typically 20 –– 22V for 12V nominal modules)
OC
V
Voltage where module produces Maximum Power (typically 17 –– 18V for 12V nominal modules)
MP
I
Current where module produces Maximum Power
MP
I
Current with module Short Circuit
SC
The 2512 will provide the best MPPT current boost performance if all PV modules are identical. Dissimilar modules should have V
0.5V or better and be of the same basic cell technology so their V
consider using a separate charge controller for each module type to obtain the best MPPT current boost performance. Select PV modules that do not exceed
the maximum ratings shown below, and preferably produce at least 3A of I
Maximum PV Power @
STC
340W
AS SHIPPED FACTORY DEFAULT SETTINGS
The 2512 contains various user configurable settings all of which are preconfigured at the factory. Most installations require no
changes to these settings which are typically suitable for most lead-acid batteries including sealed lead-acid batteries such as
Gel and AGM. All software programmable settings require the IPN-ProRemote to change and are retained if power is lost or the
IPN-ProRemote is used as a setup tool only and removed.
Software programmable settings
Charge mode .............................................. 3-stage
Acceptance voltage .................................... 14.2V
Float voltage ................................................ 13.2V
Charge time ................................................ 2.0 hours
Float Transition Current .............................. 1.5A/100 amp-hours
Load control ON voltage ........................... 12.6V
Load control OFF voltage ......................... 11.5V
DIP switch & jumper settings (All DIP’' s OFF, A2 open –– Defaults cannot be changed on SB2512i)
Auxiliary Output mode ................................ Auxiliary battery charger
Equalize ...................................................... Disabled
EQUALIZE ENABLE (Omitted on SB2512i)
If DIP switch #4 is turned OFF, equalization is completely disabled. If DIP switch #4 is turned ON prior to the application of battery power, automatic
equalization is enabled and the SB2512iX will perform automatic equalization after the set number of Auto Equalize Days has elapsed. If DIP switch #4 is
turned ON, after battery power is applied the first automatic equalization cycle will begin immediately. Equalization can also be controlled from the IPN-
ProRemote if DIP switch #4 is ON.
BATTERY TEMPERATURE SENSOR (Omitted on SB2512i)
Installation of the optional battery temperature sensor enables temperature compensation of all charge voltage setpoints. In a multi-controller system a
single temperature sensor must connect to the IPN master. Do not attach a sensor or connections other than Blue Sky Energy battery temperature sensor p/n
930-0022-20. Be certain to observe proper RED/BLK polarity.
and I
. Yet in real world conditions I
OC
SC
= V
x I
)
MAX
MP
MP
will tend to track as operating conditions change. If module types are very different
MP
per 100 amp-hours of battery capacity.
MP
Maximum PV
Maximum PV
Isc @ STC
V
OC
20A
28.0V
and I
approach 1.25 times STC ratings which is why National Electrical
OC
SC
is commonly only about 75 –– 80% of I
MP
Recommended range of V
@ STC
Equalize voltage ....................................................... 15.2V
Equalize time ............................................................ 2.0 hours
Auto equalize days ................................................... 30 days
Maximum voltage setpoint limit ................................ 15.5V
Temperature compensation factor ........................... 5.00mV/ C/cell
Dusk-to-Dawn lighting control ................................ Disabled
IPN Network address ............................................... 0 (zero)
Installation and Operation Manual
MP
at STC
MP
Nominal 12V PV
16.5 –– 18.5V
at STC.
MP
values within
6
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