Alfa Laval EPC-41 Control Module – Technical Specifications

 General Description

• Type: Microprocessor-based control unit
• Application: Automatic control of centrifugal separator systems (purifiers & clarifiers)
• Functions:
  • Start / stop sequence control
  • Separation process control
  • Sludge discharge automation
  • Alarm monitoring and fault detection
  • Temperature regulation via built-in PI controller

 Electrical Specifications

• Supply voltage: 48 V AC (+10% / –15%)
• Frequency: 50 / 60 Hz (±5%)
• Power consumption:
  • Separation mode: max. 110 VA
  • Sludge discharge: max. 200 VA
• Output load capacity:
  • Inrush: max. 5 × 45 VA
  • Continuous: max. 5 × 23 VA

 Inputs / Outputs

Digital / Analog Inputs

• Alarm inputs: 5 potential-free contacts
• Remote inputs: 6 potential-free contacts
• Temperature input: 1 × Pt-100 sensor
• Temperature control input: Pt-100 (for heater control)

Outputs

• Valve control outputs:
  • 5 relays (48 V AC)
• Heater control outputs:
  • 3 potential-free relays (max. 0.5 A)
  • 1 triac (max. 100 mA)
• Motor stop relay:
  • 1 potential-free relay (max. 50 V, 1 A)
• Remote alarm output:
  • 1 potential-free relay (max. 50 V, 0.5 A)

 Communication Interfaces

• 1 × 20 mA current loop
• 1 × RS-232C serial interface

 Functional Capabilities

• Programmable for different separator types and operating conditions
• Controls:
  • Separator startup/shutdown
  • Oil separation cycle
  • Sludge discharge timing
• Continuous monitoring with alarm triggering when limits are exceeded
• Integrated temperature PI controller for heater systems (electric or steam)

 Protection & Environmental

• Protection class: IP65 (dust-tight, water-resistant)
• Ambient temperature: up to 55°C

 Fuses & Power Distribution

• Main fuse: 3.0 A (built-in with power switch)
• Auxiliary fuse: ~1–1.6 A (24 V AC external supply)
• Glass fuses: 500 mA, 2.5 A, 5 A

 Mechanical / Physical

• Mounting: Wall-mounted cabinet
• Max cable size: 1.5 mm²
• Weight: approx. 18 kg

 Key Takeaways

• EPC-41 is an earlier-generation separator controller (predecessor to EPC-50 / EPC-400)
• Designed for fully automatic purifier/clarifier operation
• Offers robust relay-based control with programmable parameters
• Built for marine and industrial environments (IP65, high temperature tolerance)