DD1 Tachometer Converter

Brand: Yokogawa Electric Corporation

The DD1, a nest-mounting type DCS-supported tachometer converter, receives AC voltage signals from electrical tachometers (tachogenerators), and converts them into various DC current or DC voltage signals.
Features
  • AC/DC conversion is made by mean value

Specifications

Accuracy

  • ± 0.3 % of Span
  • Output 2: Relative Error within ± 0.2 % between Output-1 & 2

Consumption

  • 60 mA at 24 Vdc (1-5 V) - Current Consumption
  • 90 mA at 24 Vdc (4-20 mA) - Current Consumption

Current

  • 1-24 mA DC - Span

Electrical Connectors

  • M4 Screw Terminal

Frequency

  • 15 to 1,000 Hz - Input Frequency

Humidity

  • 5 to 90 % Relative Humidity, Non-Condensing

Input Signal

  • 0 to 150 Vac
  • 16-150 Vac - Span

Insulation Resistance

  • 100 megaohms or more at 500 Vdc between Input & Output, Output & Power Supply, & Input & Power Supply

Mounting

  • Nest-Mounting

Operating Temperature

  • 0° to 50° C (32° to 122° F)

Output

  • 0 to 100 mVdc
  • 0 to 24 mA DC
  • 10 mV to 20 V - Span (DC)
  • -10-10 Vdc

Power Supply

  • 24 Vdc ± 10 % (Ripple Content 5 % Peak-to-Peak or Less)

Power Supply Effect

  • ± 0.2 % of Span or Less for the Fluctuation within the Operating Range of Power Supply Voltage Specification

Resistance

  • 2 to 250 kiloohms or more - Allowable Load Resistance for DC Voltage Output
  • 750 to 15,000 ohms or Less - Allowable Load Resistance for DC Current Output

Response Time

  • 2.4 seconds, 63 % Response (10 to 90 %)

Span & Zero Adjustments

  • -5 to 5 % - Zero Adjustment
  • 95 to 105 % - Span Adjustment

Supply Voltage

  • 1,500 Vac/minute between Input & (Output & Power Supply) - Withstand Voltage
  • 500 Vac/minute between Output & Power Supply - Withstand Voltage

Temperature Effect

  • ± 0.2 % of Span or Less for a Temperature Change of 10° C (18° F) - Effect of Ambient Temperature

Zero Offset

  • 0 to 200 % - Zero Elevation (Current Signal)
  • -100 to 200 % - Zero Elevation (Voltage Signal)
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