Programmable Frequency Indicator – PR Electronics 5725

Features

  • Measures NPN, PNP, Contact, NAMUR, S0, Tacho and TTL sensors
  • Programmable frequency input span of 0.001 Hz to 50 kHz
  • The 5725D has two SPDT relays and one analog output
  • Easy to read 4-digit, 14-segment LED display with scrolling help text
  • Universally powered by 21.6…253 VAC or 19.2… 300 VDC
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Application

  • The 5725 measures, scales, and displays frequency signals found in many process speed and flow rate applications.
  • The indicator can measure the period of the frequency, useful for displaying the elapsed time between events.
  • The 5725D has two SPDT setpoint contacts and a 0/4…20 mA output for process control.
  • The installed display provides IP65 environmental sealing, and additional protection is provided by the optional 8335 splash proof cover.

Technical characteristics

  • 4-digit display with 13.8 mm high, 14-segment LED digits and adjustable decimal point.
  • Indicator is scalable from -1999 to 9999.
  • Scrolling help text makes programming easy.
  • Customizable trigger levels allow measurement of nearly any pulse sensor.
  • Built-in excitation source for measuring NPN, PNP, NAMUR and S0 sensors.
  • Fast response time of 1 cycle + 100 ms, and excellent accuracy of better than 0.05% of selected range.
  • The analog output current on the 5725D can be dampened from 0.1 to 60 seconds, and can handle up to 800 Ohms loop load.
  • The 5725 meets NAMUR NE21 recommendations for high performance in harsh EMC environments.
  • High 2.3 kVAC galvanic isolation, and an excellent signal/noise ratio of > 60dB.

Mounting / installation / programming

  • Easy to mount 1/8 DIN (48×96 mm) panel meter with IP65 (type 4X) sealing.
  • Approved for marine applications.
  • Fully push-button programmable.
  • Password-protected.

Specification

ENVIRONMENTAL CONDITIONS
Operating temperature -20°C to +60°C
Storage temperature -40°C to +85°C
Calibration temperature 20…28°C
Relative humidity < 95% RH (non-cond.)
Protection degree IP20
Protection degree (mounted in panel) IP65 / Type 4X
Installation in Pollution degree 2 & meas. / overvoltage cat. II
MECHANICAL SPECIFICATIONS
Dimensions (HxWxD) 48 x 96 x 120 mm
Cut out dimensions 44.5 x 91.5 mm
Weight approx. 230 g
Wire size, pin 11-12 & 41-44, max. 1 x 1.5 mm2/ AWG 30…16 stranded wire
Wire size, others, max. 1 x 2.5 mm2/ AWG 30…12 stranded wire
Terminal connection Spring-cage
Vibration IEC 60068-2-6
2…13.2 Hz ±1 mm
13.2…100 Hz ±0.7 g
COMMON SPECIFICATIONS
Supply
Supply voltage, universal 21.6…253 VAC, 50…60 Hz or 19.2…300 VDC
Max. required power < 2.8 W (5725A) < 3.6 W (5725D)
Isolation voltage
Isolation voltage, test / working 2.3 kVAC / 250 VAC
Response time
Response time (0…90%, 100…10%) < 1 period + 100 ms
Signal / noise ratio > 60 dB
Accuracy Better than 0.05% of selected range
EMC immunity influence < ±0.5% of span
Extended EMC immunity: NAMUR NE21, A criterion, burst < ±1% of span
INPUT SPECIFICATIONS
Frequency range, f/I conversion function 0.001 Hz to 50 kHz
Low cut-off frequency 0.0009 Hz (default value)
Max. frequency, with input filter ON 50 Hz
Time range, period time function 999.9 s to 20 μs
Low cut off period time (time-out) 1111 s
Min. period time with input filter ON 20 ms
Input types NAMUR acc. to EN 60947-5-6 Tacho
NPN / PNP
TTL
S0 acc. to DIN 43864
Special voltage
Special current
OUTPUT SPECIFICATIONS
Display
Display readout -1999…9999 (4 digits)
Decimal point Programmable
Digit height 13.8 mm
Display updating. 2.2 times / s
Display response time, programmable 0.0…60.0 s
Input outside input range is indicated by Explanatory text
Current output
Programmable signal ranges 0…20/4…20/20…0/20…4 mA
Load (@ current output) ≤ 800 Ω
Load stability ≤ 0.01% of span / 100 Ω
Current limit ≤ 28 mA
Sensor error indication 0 / 3.5 / 23 mA / none
Output limitation, on 4…20 and 20…4 mA signals 3.8…20.5 mA
Output limitation, on 0…20 and 20…0 mA signals 0…20.5 mA
Relay output
Relay functions Setpoint
Hysteresis, in % / display counts 0…100% / 0…9999
ON and OFF delay 0…3600 s
Power On delay 0…60 s
Sensor error reaction Break / Make / Hold
Max. voltage 250 VAC / VDC
Max. current 2:00 AM
Max. AC power 500 VA
Max. DC current, resistive load ≤ 30 VDC 2 ADC
Max. DC current, resistive load > 30 VDC See manual for details
OBSERVED AUTHORITY REQUIREMENTS
EMC 2014/30/EU
LVD 2014/35/EU
EAC TR-CU 020/2011
APPROVALS
DNV-GL Marine Stand. f. Certific. No. 2.4
EU RO Mutual Recognition Type Approval MRA000000Z
UL UL 508 / C22.2 no. 14

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