Description
The Kongsberg Simrad 381-103080 (ACC400) is a specialized marine-grade power management and battery charging module. It is engineered to maintain and supervise back-up battery banks within Dynamic Positioning (DP) systems, integrated automation networks, and maritime safety consoles. The board provides intelligent multi-stage charging, thermal monitoring, and automated switch-over logic to guarantee uninterrupted control power in the event of a main AC supply failure.
Technical Specifications
- Model ID: ACC400
- Part Number: 381-103080
- Dimensions: 168 mm x 130 mm x 38 mm
- Weight: 0.48 kg
- Country of Origin: Norway
- Input Voltage: Standard internal backplane AC/DC supply rails
- Output Profile: Temperature-compensated DC charging current
Application Areas
⚓ Dynamic Positioning (DP) Backup Power Sub-Systems
🚢 Uninterruptible Power Supply (UPS) Racks for Bridges
🌊 Marine Automation Electronics Enclosures
🏗️ Emergency Alarm and Signaling Battery Banks
🛰️ Critical Maritime Navigation Control Racks
Operational Guidelines
Power-Up / Power-Down Sequence
- Startup: Completely isolate the target system housing or rack cage from live mains. Align the ACC400 board with the slot guides, slide it into the backplane until the pins seat fully, and lock the faceplate retention fasteners. Apply the primary input power. The onboard charging status LEDs will run a brief initialization flash and transition into a slow pulse or solid state, indicating active battery tracking and voltage regulation.
- Shutdown: In the system diagnostics software, deselect or isolate the battery backup loop associated with this charger to prevent false low-voltage alarms. Turn off the primary supply breaker to the sub-rack. Disconnect the backup battery terminal leads from the rack interface, then remove the card while using proper ESD handling procedures.
Step-by-Step Standard Operation
- Switch Inspection: Verify that any onboard configuration jumpers or mini-switches are set to match the chemistry and voltage of your battery bank (e.g., Lead-Acid or Gel cell).
- Card Seating: Insert the module into its assigned slot inside the Kongsberg control cabinet while wearing an anti-static wrist strap.
- Battery Connection: Connect the auxiliary battery storage wires to the designated distribution terminals linked to this slot.
- Voltage Calibration: Turn on the system and use a digital multimeter on the board test points to confirm the float charge voltage meets the battery specifications.
- Monitoring Status: Check the front-panel LEDs to ensure the board shows a “Normal Charge” status and that no ground-fault or overtemperature indicators are active.
Frequently Asked Questions
Q: What does a flashing red or amber LED on the ACC400 indicate? A: A flashing red LED typically indicates a “Battery Fault” or “High Temperature” exception, while an amber light usually points to an input supply voltage sag or an active bulk-charging state.
Q: Can this charger board be replaced while the vessel is under DP control? A: No. Swapping out the charger board while the backup system is active can temporarily interrupt the secondary power safety loop, causing voting errors or critical system alarms. Always perform this maintenance while the loop is isolated or the system is offline.
Q: Does the ACC400 module require manual adjustments for seasonal temperature shifts? A: No, the board features integrated temperature-compensated charging circuitry that automatically regulates output voltage levels based on ambient thermal profiles to protect the battery banks from gassing or undercharging.
