Programmable F/I-F/F Converter – PR Electronics 5225A

Features

  • Pulse conditioning
  • Frequency generator
  • Concurrent f/I and f/f function
  • Analog current and voltage output
  • PNP / NPN output, optional relays
  • Programmable by PC and Loop Link
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Advanced features

  • The 5225 transmitter can be configured with a standard PC and the Loop Link communications unit, or delivered fully configured.

Application

  • The f/I function performs frequency to current and voltage conversion.
  • The f/f function can be used for pulse division or multiplication and as a buffer collecting fast pulse trains.
  • The concurrent f/I and f/f functions enable a scaled digital output signal in conjunction with the analog output.
  • The frequency generator function is used as e.g. a time base or clock generator.
  • Input and supply polarity reversal protection.
  • Programmable digital outputs including NPN, PNP or relay options.

Technical characteristics

  • 4 front LEDs, indicating f in active inputs (not NPN), Dig.out.1 (NPN or relay 1) and Dig.out 2 (relay 2) outputs, and a NAMUR input error signal.
  • Analog current output can be configured to any current within 0…20 mA range.
  • Voltage output range is selectable between 0…10 VDC and 0…1 VDC by use of internal jumpers.
  • Input range:
    • Frequency: 0…20,000 Hz
    • Sensor types: NAMUR, tacho, NPN, PNP, TTL, S0
  • Output range:
    • Current and voltage output: 0…20 mA / 0…10 V
    • Relay outputs: 0…20 Hz
    • NPN and PNP output as f/f: 0…1000 Hz
    • NPN and PNP output as generator: 0…20,000 Hz

Specification

ENVIRONMENTAL CONDITIONS
Operating temperature -20°C to +60°C
Calibration temperature 20…28°C
Relative humidity < 95% RH (non-cond.)
Protection degree IP20
MECHANICAL SPECIFICATIONS
Dimensions (HxWxD) 109 x 23.5 x 130 mm
Weight approx. 190 g
DIN rail type DIN 46277
Wire size 1 x 2.5 mm2 stranded wire
Screw terminal torque 0.5 Nm
COMMON SPECIFICATIONS
Supply
Supply voltage 19.2…28.8 VDC
Max. required power 3.5 W
Internal power dissipation 1.7 W
Isolation voltage
PELV/SELV IEC 61140
Warm-up time 30 s
Power-up delay 0…999 s
Programming Loop Link
Signal / noise ratio Min. 60 dB
Response time, analog < 60 ms + period
Response time, digital output < 50 ms + period
Response time, concurrent f/I and f/f < 80 ms + period
Signal dynamics, output 16 bit
Effect of supply voltage change < ±0.002% of span / %V
Auxiliary voltage: NAMUR supply 8.3 VDC ±0.5 VDC / 8 mA
S0 supply 17 VDC / 20 mA
NPN / PNP supply 17 VDC / 20 mA
Special supply (programmable) 5…17 VDC / 20 mA
Temperature coefficient < ±0.01% of span / °C
Linearity error < 0.1% of span
EMC immunity influence < ±0.5%
INPUT SPECIFICATIONS
Common input specifications
Max. offset 90% of selected max. frequency
Measurement range 0…20 kHz
Min. measurement range 0.001 Hz
Low cut-off frequency 0.001 Hz
Max. frequency, with input filter ON 50 Hz
Min. period time with input filter ON 20 ms
Input types NAMUR acc. to DIN 19234 Tacho
NPN / PNP
TTL
S0 acc. to DIN 43864
OUTPUT SPECIFICATIONS
Common output specifications
Updating time 40 ms for concurrent f/I and f/f 20 ms
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
Current limit < 23 mA
Voltage output
Signal range 0…10 VDC
Min. signal range 250 mV
Load (@ voltage output) ≥ 500 kΩ
Relay output
Max. switching frequency 20 Hz
Isolation, test / working 3.75 kVAC / 250 VAC
Max. voltage 250 VRMS
Max. current 2 AAC
Max. AC power 500 VA
Max. load at 24 VDC 1:00 AM
Other output types Active outputs (NPN / PNP) f/f converter output
Frequency generator
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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