Name: Programmable frequency indicator 5725
Rating: 4.0 (3 reviews)

Programmable frequency indicator

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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.

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.

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

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

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

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 A
Max. AC power	500 VA
Max. DC current, resistive load > 30 VDC	See manual for details