The Yokogawa ARM15A is a mechanical relay contact input module used in Yokogawa’s control systems, such as the CENTUM VP system. It provides 32 contact points for field devices like switches and sensors.

Key Features

• Contact Points: 32
• Connection Terminals: M4 screws for field device connections
• Modules:
  • ADV151: 32-point DI (Digital Input) module
  • ADV161: 64-point DI module (*1)
• Signal Cables:
  • AKB331: For 32-point
  • AKB337: For 64-point

Input Signal Characteristics

• ON Signal: ≤150 Ω
• OFF Signal: ≥200 kΩ
• External Contact Rating:
  • Minimum Load: 24 V DC, 13 mA (*3)

Power Supply and Consumption

• Power Supply: 24 V DC (External power required)
• Current Consumption for Internal Circuit: Max. 0.32 A
• Field Device Power Supply: Dual-line per 16-point
  • 24 V DC: Max. 0.3 A per line

Electrical Insulation and Safety

• Insulation Resistance: ≥10 MΩ (500 V DC)
• Withstanding Voltage:
  • Between field device terminals and cases: 1.5 kV
  • Between 24 V power terminals and cases: 500 V
  • Between 24 V power terminals and field device terminals: 1.5 kV

Environmental Specifications

• Ambient Temperature: 0 to 50 °C
• Humidity: 10 to 90 %RH

Standards and Compliance

The ARM15A meets various EMC standards, including:

• CE Marking
• C-Tick Marking
• KC Marking (*2)

Physical Specifications

• Size: 482.6 mm (W) x 132.5 mm (H) (3U)
• Weight: 2.2 kg