136483-01 | Bently Nevada Isolated +4 to +20 mA I/O Module with external terminations

The Bently Nevada 136483-01 is a highly reliable and accurate industrial automation product designed for signal processing in machinery protection systems. This isolated Input/Output (I/O) module specializes in handling current signals within the range of +4 to +20 milliamps (mA).

Specifications

Inputs

• Input Options:

  • +/-10 Vdc I/O: Accepts voltage signals between -10 and +10 Volts DC.
  • 4-20 mA Barrier I/O: Handles 4-20 mA current loop signals with an internal barrier for added protection. It provides limited external transducer power (+24 Vdc, 250 mA max).
  • 4-20 mA Isolated I/O: Accepts 4-20 mA current loop signals with electrical isolation to minimize noise interference.

• Input Specifications:

  • Voltage Compliance (4-20 mA Barrier I/O, 4-20mA out): Maximum voltage output of 13.66 V.
  • Isolation (4-20 mA ISO I/O only): 500 Volts of isolation between input and output circuits.
  • Input Impedance:
    • +/-10V I/O: 1 MΩ (Mega Ohm) impedance.
    • 4-20 mA Barrier I/O & 4-20 mA Isolated I/O: 50 Ω (Ohm) impedance.
  • Power Consumption: Typical power consumption of the monitor is 7.0 Watts.
  • External Transducer Power (Internal Barrier I/O Only): Provides +24 Vdc with a current limit of 250 mA for powering external transducers.

Outputs

• Front Panel LEDs:
  • OK LED: Indicates proper operation of the monitor.
  • TX/RX LED: Indicates communication activity with other modules in the 3500 rack.
  • Bypass LED: Indicates when the process variable is in bypass mode.

Signal Conditioning

• Performed Internally: At +25°C (+77°F).
• Full-Scale Range: Configurable for each channel via the 3500 Configuration Software. No calibration required.
• Accuracy: Signal conditioning accuracy within ±0.33% of full-scale (typical) and ±1% maximum.
• Full-Scale Range:
  • Maximum of 20,000 units mapped across the input signal span.
  • Minimum input signal span for voltage input is 2 Volts.

Alarms

• User-Configurable Setpoints: Alert and Danger setpoints ranging from 0 to 100% of full-scale.
  • Alarm Accuracy: Within 0.13% of the desired value.
  • Alarm Time Delays:
    • Alert: 1 to 60 seconds in 1-second intervals.
    • Danger: 1 to 60 seconds in 0.5-second intervals.

Proportional Values

• Process Variable Measurements: Used for machine monitoring.
• Outputs: Proportional values (current or voltage) in various configurable units.

Environmental Limits

• Operating Temperature:
  • -30°C to +65°C (-22°F to +149°F) with internal/external termination I/O module.
  • 0°C to +65°C (+32°F to +149°F) with internal barrier I/O module (internal termination).
• Storage Temperature: -40°C to +85°C (-40°F to +185°F).
• Humidity: 95%, non-condensing.

I/O Module Dimensions and Weight

• Without Barriers:
  • Dimensions: 241.3 mm x 24.4 mm x 99.1 mm (9.50 in x 0.96 in x 3.90 in)
  • Weight: 0.20 kg (0.44 lb)
• With Barriers:
  • Dimensions: 241.3 mm x 24.4 mm x 99.1 mm (9.50 in x 0.96 in x 3.90 in)
  • Weight: 0.46 kg (1.01 lb)