GE Fanuc IC3600EPSA1 Series 90-30 Emergency Power Supply Module

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Product Overview:
The GE Fanuc IC3600EPSA1 is a dedicated Emergency Power Supply (EPS) module for the Series 90-30 PLC platform. This module provides a battery-backed 5V DC power supply specifically designed to keep the PLC’s CPU and critical memory alive during a main power failure. It ensures that the PLC program, data tables, and real-time clock continue to operate, allowing for a controlled shutdown or seamless transfer to backup power. It is a safety-critical component in power plants, chemical plants, and any facility where uncontrolled PLC shutdown would cause process upset or safety hazards.

Technical Specifications:
Series: GE Fanuc Series 90-30
Output Voltage: 5V DC ± 5% (regulated)
Output Current: 3.0 Amps maximum (15 Watts)
Battery Input: 12V DC to 24V DC (battery connected to module)
Battery Type: Sealed Lead-Acid (SLA) or Lithium-Ion (external battery pack)
Switching Time: 0 ms (instantaneous transfer from main power to battery)
Charge Current: 0.5 Amps (automatic trickle charge when main power is present)
Battery Low Alarm: Configurable threshold, typically triggers at 11V DC (for 12V battery)
Backplane Bus: 90-30 Backplane Bus (VME-based)
Power Consumption: < 2.0 Watts (quiescent)
Operating Temperature: 0°C to +60°C
Protection Rating: IP20 (rack mount only)

Functional Features:
Instantaneous Transfer: Zero-gap switching between main power and battery ensures CPU never loses power.
Automatic Battery Charging: When main power is present, the module automatically charges the connected battery at 0.5A trickle charge.
Battery Low Alarm: Sends a warning signal to the CPU when battery voltage drops below the configured threshold, allowing the system to initiate an emergency save.
Regulated 5V Output: Provides clean, regulated 5V DC to the CPU, protecting it from battery voltage sag.
LED Indicators: Power OK (green), Battery Charging (amber), Battery Low (red).
DIP Switches: Configure battery low threshold and alarm behavior.

Performance Parameters:
Output Ripple: < 50mV p-p
Efficiency: > 80% (main power to 5V output)
Battery Backup Duration: 30 minutes to 2 hours (depending on external battery capacity and CPU load)
MTBF: > 100,000 hours
Battery Recharge Time: < 24 hours (from fully discharged to fully charged)

Material Composition:
Housing: Zinc-plated steel chassis, powder-coated gray
PCB: FR-4 Glass Epoxy, 4-layer board
Voltage Regulator: LM7805 or equivalent with over-current protection
Battery Connector: Screw terminal block for external battery connection
Relay: Sealed reed relay for automatic power source switching
LEDs: High-brightness LEDs on front panel