FBM203 B/C/D P0922UD Platinum Nickel Copper RTD Input Module

FBM203 Series Modules Overview

by Schneider Electric

• Input Channels

  • Number: 8 resistance temperature detector (RTD) input channels per module.
  • Isolation: Each channel is isolated and independent.

• Input Range (Each Channel)

  • FBM203/203d: 0 to 320 ohms (320 ohms = 64000 counts). Minimum overrange value is 327.675 ohms at a count of 65535.
  • FBM203b: 0 to 640 ohms (640 ohms = 64000 counts). Minimum overrange value is 655.35 ohms at a count of 65535.
  • FBM203c: 0 to 30 ohms (30 ohms = 64000 counts). Minimum overrange value is 30.72 ohms at a count of 65535.

• Sensor Current

  • FBM203/203d: 0.19 mA DC nominal.
  • FBM203b: 0.10 mA DC nominal.
  • FBM203c: 0.54 mA DC nominal.

• Lead Resistance

  • FBM203/FBM203b: 50 ohms maximum each lead. Imbalance decreases accuracy.
  • FBM203c: 10 ohms maximum each lead. Imbalance decreases accuracy.
  • FBM203d: 50 ohms maximum. Imbalance does not affect accuracy.

• Analog Accuracy (Includes Linearity)

  • FBM203/203d: ±0.03% of span.
  • FBM203b: ±0.03% of span.
  • FBM203c: ±0.1% of span.

• Accuracy Temperature Coefficient

  • ±50 ppm/ºC.

• Input Signal A/D Conversion

  • Each channel performs its own A/D signal conversion using an independent sigma-delta technique.

• Integration Period

  • Software configurable.

• Common Mode Rejection

  • >125 dB at 50 or 60 Hz.

• Normal Mode Rejection

  • >95 dB at 50 or 60 Hz.

• Typical Resistance Temperature Sensors

  • FBM203/203d:
    • Platinum: 100 ohms nominal at 0°C.
    • Nickel: 235 ohms nominal at 0°C.
  • FBM203b:
    • Platinum: 200 ohms nominal at 0°C.
    • Nickel: 470 ohms nominal at 0°C.
  • FBM203c:
    • Copper: 10 ohms nominal at 25°C.

• Input Signal

  • Supports 2-, 3-, or 4-wire variable-resistance temperature sensors.
  • For 2-wire inputs, no correction for lead resistance or temperature changes.

• Process I/O Communications

  • Communicates with its associated FCM or FCP via the redundant 2 Mbps module fieldbus.

• Input Channel Isolation

  • Each channel is galvanically isolated from all other channels and earth (ground).
  • Withstands 600 V AC applied for one minute between any channel and ground or between channels.

• Power Requirements

  • Input Voltage Range (Redundant): 24 V DC +5%, -10%.
  • Consumption: 3 W (maximum).
  • Heat Dissipation: 3 W (maximum).

• Operating Conditions

  • Temperature:
    • Module: -20 to +70°C (-4 to +158°F).
    • Termination Assemblies - PA: -20°C to +70°C (-4 to +158°F).
  • Relative Humidity: 5 to 95% (noncondensing).
  • Altitude: -300 to +3,000 m (-1,000 to +10,000 ft).

• Storage Conditions

  • Temperature: -40 to +70°C (-40 to +158°F).
  • Relative Humidity: 5 to 95% (noncondensing).
  • Altitude: -300 to +12,000 m (-1,000 to +40,000 ft).

• Contamination

  • Suitable for use in Class G3 (Harsh) environments as defined in ISA Standard S71.04, based on exposure testing according to EIA Standard 364-65, Class III.

• Vibration

  • 7.5 m/S² (0.75 g) from 5 to 500 Hz.

Physical Specifications

• Weight: 284 g (10 oz) approximate
• Dimensions: 102 mm (height) x 45 mm (width) x 104 mm (depth)
• Termination cables: Up to 30 m long, polyurethane or LSZH material

Construction

• Termination assembly material: Polyamide (PA), compression
• Field termination connections: Compression or ring lug types

Dimension: 4.5x11x11.5cm

Weight: 0.3kg