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D421-31 | Print |

D421.31 Compact Converters
Speed (frequency) to Analog Signal

 

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Application Characteristics

  • Widely used at drives and any other process to convert to an analog signal, for process controlling, speed display, recording, data handling
  • Input to frequency signals 0 ... 100 kHz with programmable high and low end of range
  • Responding to all type of sensors and transmitters
  • Easy installation and operation
  • Precise digital calibration to the application data
  • Analog output 20 ma / 10 volts


Specific Features

  • Alternative input paths for high level signal sources and with high sensitivity for low level signals
  • 5 digit scaling factor for the quantity under measurement
  • 3 digit programmable input frequency divider to compensate signal sequence irregularities
  • Measuring principle combining programmable fast response and averaging within wide limits
  • Square wave input repeating output
  • Isolated analog signal output
  • 5 digit display reading the variable in programmed terms (8 mm LCD).

 

Measuring Principle
Distinguished by quartz-controlled pulse distance evaluation, automatically extended over a programmable minimum period of time. The ideal combination of fast response and averaging of measurements, as appropriate for the application.
Minimum response time (to averaging)
programmable 5 millisec up to 99 seconds.

Signal Input
Isolated from power supply, and from output.
The high level path responds with on/off >7/<4 volts. Max. signal 150 v. Impedance 100 k. Frequency 0-100 kHz.
The high sensitivity path  responds to > 50 millivoltsRMS, max 35 v DC may be superposed. Max. signal 100 v.
Impedance 50 k. Frequency 1-50 kHz.
Sensor supply 12 volts/60 ma
and 8 volts via 1k for 2leads NAMUR types.
Input frequency divider programmable 001 - 255.

Pulse Output
Square wave with same sequence as input. Level approx 10 v with 1 k impedance. Common zero with input.

 

Analog Output

Isolated from input and power supply. Current 0/4-20 ma into max load 750 ohms. Alternatively by terminal jumper 0/2-10 volts with max load 3 ma. Conversion span and live zero programmable.
Resolution 12 bit (1:4096). Accuracy 0.1 %.
Long term stability 0.25% for 5000 hrs.
Temperature stability 0,02%/°C within 0-40 °C.

Ambient Temperature in operation
Standard 0 ..+ 50 °C.

Increased range (suffix M to model No) -25 °C ...+ 65 °C.
No condensation.

Design
Snap-on-track enclosure for 35 mm DIN rail. 70 mm long, width 75 mm, height 110 mm.
Display (8 mm LCD) and programming keys (lowered) on top.
Protection grade enclosure IP 40,terminals IP 20.
Weight approx. 250 grams.

Special design for outdoor mounting in IP65 (NEMA 4) enclosure. Suffix -G to model No.

Power supply
on option:

18 ... 40 volts AC/DC = suffix U1 to model No.
85 .. 265 volts AC/DC = suffix U2 to model No.
Power consumption approx 4 watts.

Insulation grade: category I .

Compatibility to Standards
EMI according to  EN 610000-6.2, EN 610000..-6.4,
Safety according to EN 61010-1

 

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Functional and Wiring Diagram

 

 

 

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