Foxboro RH916MZ

Foxboro RH916MZ

Product Introduction:
The Foxboro RH916MZ is a high-performance digital output terminal assembly designed for the I/A Series system. It interfaces with the FBM242 digital output module. This assembly is capable of switching higher voltage loads (often 60 V DC) at significant current levels (up to 2 A per channel), providing a direct interface for high-side switching of field devices.

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Category: SKU: Foxboro RH916MZ

Description

Foxboro RH916MZ

Technical Specifications:

  • Type: 16-Channel Digital Output Terminal Assembly
  • Associated Module: FBM242 (Isolated Digital Output)
  • Output Type: High-Side Switch (Solid State)
  • Voltage Rating: 60 V DC
  • Current Rating: 2 A per channel
  • Protection: Per-channel fusing and short-circuit protection
  • Termination: Screw terminals for field wiring
  • Environmental Rating: G3 (harsh environment)
  • Operating Temperature: -40 °C to +70 °C

Functional Features:

  • Direct connection to loads without the need for external relays (up to 2 A)
  • High-channel density (16 channels) for space-saving cabinet design
  • LED indicators for each channel to show output status
  • Comprehensive diagnostics via feedback to the FBM242 module
  • Rugged design suitable for high-vibration areas

Application Scenarios:

  • Driving solenoid valves in process control applications
  • Controlling indicator lights and alarms
  • Actuating small motor starters or contactors
  • Used in ESD (Emergency Shutdown) systems where fast switching is required

Performance Parameters:

  • Fast switching response time (typically < 10 ms)
  • High surge current capability for inductive loads
  • Low on-state resistance for minimal power dissipation

Material and Structural Characteristics:

  • Durable thermoplastic housing for electrical insulation
  • Heavy-duty metal terminals for reliable current carrying
  • Integrated heat sink features to dissipate heat generated by switching

Working Principle:
The assembly receives logic signals from the FBM242 module and drives solid-state switches connected to the field terminals. When a switch is activated, it connects the load to the power supply (60 V DC). The protection circuits monitor current flow and interrupt the circuit if a short circuit or overload is detected.

Installation Requirements:

  • Ensure proper heat sinking if driving high currents continuously
  • Connect load wiring observing polarity (positive and negative)
  • Use suppression diodes or varistors across inductive loads
  • Tighten terminals to the recommended torque to prevent overheating

Usage Notes:

  • Do not exceed the maximum current per channel or total module current
  • Check for proper fuse ratings if equipped
  • Ensure load power supply voltage matches the 60 V DC rating

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