Vanner LSC12-2000 - User Manual

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Overview

Function Description
Usage Features
Important Technical Specifications
Maintenance Features
Safety Precautions

The Vanner LSC12-2000 is a true sinewave inverter/charger system, designed with advanced power electronic and digital signal processor technology. It functions as a battery charger, a pure sinewave inverter, and an AC transfer system, all integrated into a compact enclosure. This bi-directional all-in-one design is certified by UL (UL458 Vehicle & Supplement SA), emphasizing its suitability for permanent systems and ease of installation.

Function Description:

The LSC12-2000 primarily serves three functions:

Battery Charging: It features a three-step charging function (Bulk, Absorption, Float) to ensure batteries are always 100% charged. This multistage battery charger is equipped with Power Factor Correction (PFC) and Proportional-Integral (PI) features. PFC controls the power used for charging to achieve a power factor close to 1, making the charger appear as a resistor to the line and optimizing current wave shape. PI allows independent control of charger voltage and current, maximizing real power from the AC source (utility or generator) and improving charging capabilities. The charger monitors battery voltage to determine the appropriate charging stage. If AC power is lost and returns within 2 minutes, the charge mode resumes from its prior stage. The charger will stop charging if the AC input voltage falls below 90 VAC to stabilize the incoming AC voltage.
Inverter Operation: It converts a DC voltage from a battery to an AC voltage, providing a perfectly reliable AC output even when external AC power is limited. The output is a pure sine wave with a Total Harmonic Distortion (THD) of less than 5% at 12.5V/25V/115VAC (linear load).
AC Transfer System: When external AC power is available, the transfer relay switches on, supplying both outputs and the battery charger from the external AC power source. This allows for seamless transition between inverter and utility/generator power. The transfer time is 0 seconds.

Usage Features:

Battery Type Selection: The LSC12-2000 can connect to three types of batteries: LiFePO4, Flooded (default setting), and AGM. Users can adjust parameters via DIP switches to match specific battery charging characteristics.
Output Voltage Selection: The output voltage can be selected between 100V, 110V, 115V, and 120V using DIP switches S1 and S2. The default setting is 120VAC.
Output Frequency Selection: The output frequency can be set to either 50Hz or 60Hz using DIP switch S3. The default setting is 60Hz.
AC Input Current Limit Selection: Users can select the AC input current limit from 3A to 30A using DIP switches S4, S5, and S6. The default is 15A. This feature is crucial for the "Power Support function."
Charger Current Selection: The charger current can be set to 25%, 50%, 75%, or 100% using DIP switches S9 and S10. The default is 100%.
DC Source Output On/Off: DIP switch S11 controls the DC source output, with a default setting of ON.
Saving Function: The saving mode can be activated or deactivated via DIP switch S12 (default OFF). This mode is triggered if the output load is less than 20W for 10 seconds, optimizing energy consumption.
Remote Control Terminal: A remote control terminal allows for ON/OFF operation of the inverter and can be connected to a Form C relay for "FAULT" indication. This includes conditions like input under/over voltage, output short circuit, over temperature, overload, and fan failure.
Power Support Function: With the adjustable AC input current limit, the Power Support function triggers Over-Load Protection (OLP) when the output power exceeds the limit. This protects the input AC power device (utility or generator) from overload.
Safety Features: The unit incorporates standard AC short circuit protection. The transfer relay immediately switches off if incoming AC power fails, preventing high voltage on the shore cable inlet when disconnected.

Important Technical Specifications:

Model: LSC12-2000
Nominal Voltage (DC): 12 VDC
Input Voltage Range: 10.5 ~ 16.5 VDC
Input Over-Voltage Protection: 16.5 VDC
Input Under-Voltage Protection: 10.5 VDC
Input Current (Max): 260 A
Continuous Output Power: 2000 VA ± 3%
Surge Power: 4000 VA (2 Sec)
Output Voltage (AC): 100/110/115/120VAC ±3% (User-selectable)
Output Frequency: 50/60 Hz ± 0.3 Hz (User-selectable)
Max. Efficiency (Full Load): 89% (Inverter Mode), >88% (Charger Mode)
Output Waveform: Pure Sine Wave (THD < 5%)
INV. AC Output / AC Output: 20A MAX
AC Input Protection: 30 Amp Circuit Breaker
Charger Current Range: 25/50/75/100A
Max. Output Voltage (Charger): 14.4 VDC
Nominal Current (Charger): 16.5A (@110VAC)
Transfer Time: 0 sec
Operating Temperature Range: -20℃ ~ 40℃ (Full Load), -30℃ ~ 70℃ (Storage)
Operating Humidity Range: Max 93%, Non-condensing
Dimensions (W x H x D): 251 x 116 x 453mm
Net Weight: 6 Kg
Safety Standards: UL458 Vehicle & Supplement SA
EMC Standards: Certified FCC Class A

Maintenance Features:

LED Indicators: The front panel features LED indicators for "Battery voltage," "AC output load," "Charger stage," and "System status," providing visual feedback on the unit's operational state and any potential issues.
- Green LED: Indicates normal operation (Solid ON for normal battery voltage/load, Slow Blink for Over Temperature Protection, Fast Blink for Under Temperature Protection).
- Orange LED: Indicates warnings (Off for Inverter mode, Solid ON for Battery Low voltage, Over load, Phase or Frequency issues, Absorption mode).
- Red LED: Indicates failures or critical protections (Solid ON for Battery Under/Over voltage, Grid Over/Under Voltage Protection, Grid Over Current Protect, Over Load/Short Circuit Protection, Failure; Slow Blink for Battery Under Voltage Protection; Fast Blink for Battery Over Voltage Protection).
Troubleshooting Guide: The manual includes a comprehensive troubleshooting section, correlating LED indicators and buzzer states with specific issues and providing solutions.
Fan Speed Control: The cooling fan speed is controlled by both load percentage and temperature, ensuring efficient cooling and preventing overheating. The fan runs at full speed during over temperature, circuit short, or overload conditions.
Wiring and Connections: Regular checks (at least once a year) of wiring and connections are recommended to identify and correct defects like loose connections or burned cables.
Fuse Protection: Very Fast Acting DC Fuses are recommended in line with the positive cable, as close to the positive battery terminal as possible, to prevent damage from short circuits between batteries and the unit. The LSC12-2000 recommends #2/0 wire AWG with a 400A inline fuse and >400A external fuse for up to 6 ft distance between batteries and the unit.
Auxiliary DC Output: A second charger output connector is available for maintaining a small battery, with a maximum current of 20A.

Safety Precautions:

The unit should not be opened or disassembled, as this may void the warranty. Only qualified, authorized, and trained electricians are permitted to open the connection compartment.
Proper grounding of rack-mounted equipment is essential.
Adequate input power and correct wiring sizes must be ensured.
The unit should not be operated near combustible gas or open fire, or in excessive humidity.
Ventilation openings must not be covered or obstructed.
Precautions such as removing metal objects, using insulated tools, and wearing rubber gloves and boots should be taken when working on the inverter charger.
Excessive battery discharge or high charging voltage can cause serious damage to batteries.
Short circuiting or reversing polarity will lead to serious damage to batteries, the unit, and wiring.