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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)
