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2255
 
 

2255

 

f/I-f/f converter

 

  • Programmable f/I converter
  • Programmable decimal divider / decimal multiplier
  • Programmable frequency generator
  • Relay output as option
  • Supply voltage 24 VDC
  1. Overview +

  2. Technical details +

  3. Accessories +


Advanced features

  • The user programmable version has a multifunction user interface consisting of three pushbuttons and a 3-digit LED displays.

Application

  • Typical signalling devices may be pulse generators, for instance flow meters, tacho-generators or inductive sensors.
  • The f/I function is used for frequency to current / voltage conversion.
  • The f/f function is used for division or multiplication of pulses and as a buffer for fast pulse trains.
  • A frequency generator function e.g. used as a time base or a clock generator.

Technical characteristics

  • 3 front LEDs, indicating f.in active input (not NPN), Dig.out (NPN or relay 1) active output and a NAMUR input error signal.
  • Analog current output can be configured within 0...20 mA range.
  • Voltage output range is selectable between 0...10 VDC by use of internal jumpers.
  • Feature include input filter, contact filter and an auxiliary supply for sensor such as NAMUR and S0.
  • Mounting for a standard 11-pole socket which can be adapted for DIN rail or plate use with PR’s 7023 adaptor and 7024 mounting keying.

Environmental Conditions

  • Operating temperature

    -20°C to +60°C

  • Calibration temperature

    20...28°C

  • Relative humidity

    < 95% RH (non-cond.)

  • Protection degree

    IP50

Mechanical specifications

  • Dimensions (HxWxD)

    80.5 x 35.5 x 84.5 mm (D is without pins)

  • Weight approx.

    125 g

Common specifications

  • Supply

  • Supply voltage

    19.2...28.8 VDC

  • Internal power dissipation

    2.4 W

  • Isolation voltage

  • Isolation voltage, test / working

    1.4 kVAC / 150 VAC

  • Response time

  • Response time (programmable)

    60 ms to 999 s + period time

  • Warm-up time

    1 min.

  • Signal / noise ratio

    Min. 60 dB

  • Accuracy

    Better than 0.1% of sel. range

  • Signal dynamics, output

    16 bit

  • Effect of supply voltage change

    < 0.005% of span / VDC

  • Temperature coefficient

    < ±0.01% of span / °C

  • Linearity error

    < 0.1% of span

  • S0 supply

    15 VDC / 25 mA

  • Special supply (programmable)

    5...15 VDC / 30 mA (acc. to order)

  • EMC immunity influence

    < ±0.5%

Input specifications

  • Common input specifications

  • Max. offset

    90% of selec. max. value

  • Measurement range

    0...20 kHz

  • Min. measurement range

    0.001 Hz

  • Low cut-off frequency

    0.001 Hz

  • Min. pulse length

    25 μs

  • Input types

    NAMUR acc. to DIN 19234

    Tacho

    NPN / PNP

    TTL

    S0 acc. to DIN 43864

Output specifications

  • Current output

  • Signal range

    0...20 mA

  • Min. signal range

    5 mA

  • Load (@ current output)

    ≤ 600 Ω

  • Load stability

    ≤ 0.01% of span / 100 Ω

  • Common output specifications

  • Updating time

    20 ms

  • Relay output

  • Max. switching frequency

    20 Hz

  • Max. voltage

    150 VRMS

  • Max. current

    2 AAC

  • Max. AC power

    300 VA

  • Max. load at 24 VDC

    1 A

  • Voltage output through internal shunt

    See manual for details

  • Max. current, NPN output

    130 mA

  • Max. voltage, NPN output

    28 VDC

  • Frequency output range

    0...1000 Hz

  • Min. pulse length

    500 μs

  • Max. pulse length

    999 ms

  • Max. duty cycle

    50%

  • Frequency generator: Pulse length f < 50 Hz

    Min. 10 ms

    Max. 999 s

  • Pulse length f ≥ 50 Hz

    50% duty cycle

  • of span

    = of the presently selected range

Observed authority requirements

  • EMC

    2014/30/EU

  • LVD

    2014/35/EU

  • EAC

    TR-CU 020/2011

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