BLUE SKY SUB 12 Průvodce řešením problémů stáhnout pdf (Strana 7)

Installation and Operation Manual

¾ 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 50VDC 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

The 2512 is designed to operate conventional 12V 36 cell PV modules or higher voltage 60 cell modules. If multiple PV modules are used best MPPT

current boost performance will be obtained if all PV modules are identical. Dissimilar modules should have V

values within ≈0.5V or better and be of the

same basic cell technology so their V

will tend to track as operating conditions change. If module types are very different consider using a separate charge

controller for each module type to obtain the best MPPT current boost performance. When multiple controllers are used on the IPN Network each controller

independently MPPT’s their modules to their best. Do not mix 36 cell and 60 cell modules on the same controller. Select PV modules that do not exceed the

maximum ratings shown below, and preferably produce I

of at least 3.5 amps (2 amps with 60 cell modules) per 100 amp-hours of battery capacity.

Voltage, current and power produced by 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

and I

approach 1.25 times STC ratings which is why National Electrical Code and our

recommendations call for 1.25 derating of both V

and I

. Yet in real world conditions I

actually seen is commonly only about 75 – 80% of I

at STC.

Key PV module specifications;

MAX

Maximum power in watts (P

MAX

= V

x I

)

Voltage with module open circuit (typically ≈20 – 22V for 12V nominal 36 cell modules)

Voltage where module produces Maximum Power (typically ≈17 – 18V for 12V nominal 36 cell modules)

Current where module produces Maximum Power

Current with module Short Circuit

PV Cell Count

Maximum PV

Power @ STC

Automatic Output

Current Limit

Maximum PV

Isc @ STC

Maximum PV

@ STC

Recommended range of

@ STC

36 Cell 340W 25A

20A

24.0V 16.0 – 19.0V

60 Cell 270W 20A

11A

40.0V 24.0V – 31.0V

AS SHIPPED FACTORY DEFAULT SETTINGS

¾ 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 an IPN-ProRemote or UCM to change and are retained if power is lost

or the IPN-ProRemote or UCM are used as setup tools only and removed.

Software programmable settings;

• Charge mode .............................................. 3-stage • Equalize voltage ....................................................... 15.2V

• Absorption voltage ...................................... 14.2V • Equalize time ............................................................ 2.0 hours

• Float voltage ................................................ 13.2V • Auto equalize days ................................................... 30 days

• Charge time ................................................ 2.0 hours • Maximum voltage setpoint limit ................................ 15.5V

• Float Transition Current .............................. 1.5A/100 amp-hours • Temperature compensation factor ........................... −5.00mV/°C/cell

• Load control ON voltage .......................... . 12.6V • Dusk-to-Dawn lighting control ............................... . Disabled

• Load control OFF voltage ........................ . 11.5V

DIP switch & jumper settings; (All DIP’s OFF, A2 open – Omitted on SB2512i-HV)

• Auxiliary Output mode ................................ Auxiliary battery charger • IPN Network address ............................................... 0 (zero)

• Equalize ...................................................... Disabled

EQUALIZE ENABLE (Omitted on SB2512i-HV)

If DIP switch #4 is turned OFF equalization is completely disabled regardless of other equalization settings. 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 an equalization cycle will begin immediately. Equalization start/stop may also

be remotely controlled from the IPN-ProRemote or UCM.

BATTERY TEMPERATURE SENSOR (Omitted on SB2512i-HV)

Installation of the optional battery temperature sensor enables temperature compensation of all charge voltage setpoints. In a multi-controller system

only one temperature sensor is required and must connect to the IPN Master, IPN address 0 (zero). 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. If a valid temperature sensor signal is not detected the

2512 will operate as if battery temperature is 25°C.

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