1. Introduction
The SmartGen BACM2420 is an intelligent and multifunctional battery charger specifically designed for lead-acid motor starter batteries. It supports both 24V and 12V battery systems and provides a maximum charging current of 20A. This manual provides essential information for the safe and efficient installation, operation, and maintenance of your BACM2420 charger.
2. Safety Information
Please read and understand all safety instructions before operating the charger. Failure to follow these instructions may result in electric shock, fire, or serious injury.
- Read Instructions: Always read the entire instruction manual before using the charger.
- Ventilation: Ensure adequate ventilation around the charger during operation to prevent overheating.
- Moisture: Do not expose the charger to rain, moisture, or excessive humidity. Operate in a dry environment.
- Grounding: Connect the charger to a properly grounded electrical outlet.
- Disconnect Power: Always disconnect the AC power supply before making or breaking any connections to the charger or battery.
- Eye Protection: Wear appropriate eye protection when working with batteries.
- Children: Keep the charger and batteries out of reach of children.
- Battery Type: This charger is designed for lead-acid batteries only. Do not attempt to charge other battery types.
3. Product Features
The SmartGen BACM2420 battery charger incorporates several advanced features for optimal performance and battery longevity:
- Intelligent and multifunctional design for lead-acid motor starter batteries.
- Compatible with 24V or 12V battery systems (configurable).
- Maximum charging current of 20A.
- Switching power structure with a wide AC input range: 100-277VAC, 50/60Hz.
- Compact size, lightweight, and high efficiency.
- User-selectable automatic two-stage or three-stage charging process to prevent overcharging and extend battery life.
- Built-in Power Factor Correction (PFC) circuit, achieving a power factor greater than 0.99.
- Real-time battery voltage detection.
- Low voltage output port: Provides a low-level output when battery voltage falls below a preset value for a specified delay.
- Temperature sensor port: Allows for real-time battery temperature monitoring and compensation, preventing excessive battery temperature.
- Failure port: Provides a low-level output when the AC input is interrupted.
- Standard RS485 communication port for remote monitoring and control.
- LED display for charging status: Green light indicates 'FULL CHARGED', Red light indicates 'CHARGING'.
4. Specifications
| Parameter | Value |
|---|---|
| Brand | SmartGen |
| Model | BACM2420 |
| Input Voltage | 100-277VAC, 50/60Hz |
| Rated Current | 20 Amps |
| Output Voltage | 24V (Configurable for 12V) |
| Battery Type | Lead Acid |
| Power Factor | >0.99 (with PFC) |
| Product Dimensions | 26.5 x 15.6 x 6.8 cm |
| Item Weight | 2.2 Kilograms |
5. Setup
Careful installation is crucial for the safe and reliable operation of the BACM2420 charger.
5.1 Product Overview
5.2 Mounting
Mount the charger in a secure, dry, and well-ventilated location. Ensure there is sufficient space around the unit for air circulation. Use appropriate fasteners for the mounting surface.
5.3 Wiring Connections
Refer to Figure 1 for terminal locations. Ensure all connections are secure and correctly polarized before applying power.
- AC Input (L, P, N): Connect the AC power supply to the 'L' (Live), 'P' (Protective Earth/Ground), and 'N' (Neutral) terminals. Ensure the protective earth connection is properly made.
- DC Output (B-, B+): Connect the negative terminal of the battery to 'B-' and the positive terminal of the battery to 'B+'. Observe correct polarity to prevent damage.
- RS485 Communication (A, B): Connect your RS485 communication cable to the 'A' and 'B' terminals for remote monitoring and control.
- Temperature Sensor (T+, T-): If using a temperature sensor (optional), connect it to the 'T+' and 'T-' terminals. This enables temperature compensation for optimized charging.
- Low Voltage Output (LO): This terminal provides a low-level output when the battery voltage drops below a configured threshold.
- Failure Output (LO): This terminal provides a low-level output when the AC input power is interrupted.
5.4 12V/24V Configuration
The BACM2420 charger is factory-set for 24V operation. It can be configured for 12V battery systems. Refer to the detailed configuration instructions in the full technical manual or contact SmartGen support for specific steps on changing this setting.
6. Operating Instructions
Once properly installed and connected, operating the BACM2420 is straightforward.
- Connect Battery: Ensure the battery is correctly connected to the DC output terminals (B- and B+).
- Apply AC Power: Connect the charger to a suitable AC power source (100-277VAC, 50/60Hz).
- Charging Process: The charger will automatically begin the charging process. The 'CHARGING' (red) LED indicator will illuminate.
- Full Charge Indication: Once the battery is fully charged, the 'FULL CHARGED' (green) LED indicator will illuminate, and the charger will switch to a maintenance charge mode to prevent overcharging.
- Charging Stages: The charger automatically selects between a two-stage or three-stage charging process based on user configuration and battery condition to optimize charging and extend battery life.
7. Maintenance
Regular maintenance helps ensure the longevity and optimal performance of your charger.
- Cleaning: Keep the charger clean and free from dust and debris. Use a dry, soft cloth for cleaning. Do not use liquid cleaners.
- Connections: Periodically check all wiring connections to ensure they are tight and free from corrosion.
- Ventilation: Ensure that the ventilation openings on the charger are not blocked.
- Environmental Conditions: Operate the charger within its specified temperature and humidity ranges.
8. Troubleshooting
If you encounter issues with your BACM2420 charger, refer to the following common troubleshooting steps:
| Problem | Possible Cause | Solution |
|---|---|---|
| Charger not powering on | No AC input power; Faulty AC connection | Check AC power supply and connections. Ensure power outlet is functional. |
| Battery not charging (Red LED off) | Incorrect battery connection; Battery voltage too low/high; Internal fault | Verify battery connections (B-, B+). Check battery voltage. If problem persists, contact support. |
| Charger overheating | Poor ventilation; High ambient temperature; Overload | Ensure adequate airflow around the charger. Reduce ambient temperature if possible. Check battery for short circuits. |
| Failure output (LO) active | AC input interrupted | Check AC power supply and connections. |
| Low voltage output (LO) active | Battery voltage below threshold | Check battery condition and charge level. |
If the problem persists after attempting these solutions, please contact SmartGen technical support.
9. Warranty and Support
For technical assistance, warranty claims, or further information regarding your SmartGen BACM2420 battery charger, please contact your authorized SmartGen dealer or visit the official SmartGen website. Keep your purchase receipt as proof of purchase for warranty purposes.
