Q478 Input Field Configurable Isolator

Brand: Eurotherm
Does not ship to United States

The Q478 is a DC powered DIN rail mount, frequency input signal conditioner with 1,800 Vdc isolation between input, output and power.

The field configurable input and output offers flexible, wide ranging capability for variable frequency drives, magnetic pickups, turbine flowmeters, and other pulse or frequency output transducers.

The input of the Q478 can be configured for any frequency span from 2 to 10,000 Hz.

The input amplitude threshold sensitivity can be adjusted from 150 mVp to 10 Vp to ensure accurate frequency measurement and minimize transient noise related errors.

The maximum input amplitude is 150 Vrms.

The output can be set for either 0 to 5 V, 0 to 10 V, 0 to 1 mA, 0 to 20 mA or 4-20 mA.
Features
  • Eliminates ground loops
  • Field configurable input ranges 2 to 10,000 Hz
  • Field configurable output ranges
  • 150 mV to 150 V Input amplitude
  • TouchCAL technology
  • High density DIN rail mounting
  • Flexible DC power supply accepts 9 to 30 Vdc
  • SnapLoc plug-in terminals

Specifications

Brand

Accuracy

  • ± 0.1 % at 25° C (77° F)

Applications

  • Control Systems
  • Industrial Data Acquistion
  • Magnetic Pickups
  • Turbine Flow Meter Monitor

Approvals & Certifications

  • CSA C222 No. 0-M91 & 142-M1987 (File No. LR42272-84)
  • IEC 801-2
  • UL (C,US)
  • UL 508 (File No. E99775)

Display

  • LEDs

Electrical Connectors

  • Plug-In Terminal
  • Wire Termination: Screw Terminals for 12 to 22 AWG

Electrical Contacts

  • Normally Closed

Electrical Rating

  • 0-1 mA at 7.5 V, Max.
  • 0-20 mA at 12 V, Max.

Electromagnetic Rating

  • ESD Protection

Excitation Voltage

  • 8 Vdc for Open Collector & Contact Closure Inputs, 5 mA Short Circuit Current, Max.

Frequency

  • Input (Full Scale Range:) 2 to 10,000 Hz
  • Input (Over-Range): 20 kHz, Max.
  • LED Indication: Input -7 % Then 4 Hz Flash

Humidity

  • Operating: 15 to 95 % Non-Condensing at 45° C (113° F)
  • Soak: 90 % Non-Condensing for 24 Hours at 65° C (149° F)

Hysteresis

  • ± 0.1 % at 25° C (77° F)

Input

  • Amplitude Range: 150 mVp-150 Vrms
  • Common Mode (Input to Ground): 1,800 V, Max.
  • Overvoltage: 180 Vrms, Max.

Input Impedance

  • > 10 kiloohms
  • Output Current (Source Impedance): > 100 kiloohms
  • Output Voltage (Source Impedance): < 100 ohms

Isolation

  • 1,800 Vdc between Input, Output & Power

Linearity

  • ± 0.1 % at 25° C (77° F)

Mounting

  • DIN Rail Mounting

Operating Temperature

  • 0° to 55° C (32° to 131° F)

Output

  • 0-10 V
  • 0-20 mA
  • Voltage Drive: 10 mA - Max.

Power

  • 2.5 W, Max.

Power Supply

  • Flexible DC: 9-30 Vdc

Response Time

  • 10 to 90 %: 500 milliseconds or 100 times the Period of the Full Scale Frequency

Sensitivity

  • 1 Vrms

Span & Zero Effect

  • Zero Turn-Up (9,998 Hz), Span Turn-Down: (2 Hz): 99 % of Full Scale

Stability

  • ± 0.025 %/°C, Max.

Storage Temperature

  • -25° to 70° C (-13° to 158° F)

Switch Type

  • DIP Switches

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