24
25
APPLIcATIONS
The f/I function
performs frequency to current and voltage conversion.
The output can be programmed to show period meaning that the input frequency
can be converted to a linear time signal.
The digital outputs are used as e.g. a frequency watch for speed control or as a
window comparator having one status between 2 limits and the opposite status
outside these limits.
The f/f function
can be used for pulse division or multiplication and as a buffer
collecting fast pulse trains. The input pulses are calculated, counted in a buffer,
and sent to the output as a pulse train with the programmed pulse width.
The concurrent f/I and f/f
functions enable a scaled digital output signal in
conjunction with the analogue output.
The frequency generator function
is used as e.g. a time base or clock
generator.
TEcHNIcAL cHARAcTERISTIcS
INPuT
Programmable input for standard pulse generator connection.
Normally, the auxiliary supply and trigger level follow the sensor type, but these
can be programmed acc. to other values.
At contact input, the 50 Hz filter should be applied.
The PRecon 5225 is protected against polarity reversal on input and supply.
ANALOGuE OuTPuT
The analogue current and voltage output can be scaled acc. to your choice in
relation to the digital input. Max. zero offset is 50% of selected measurement
range. Programmable response time.
Short circuit-protected output.
When both current and voltage signals are used simultaneously, the mA loop to
ground passes through the internal shunt.
Standard voltage output
(pin 12) is obtained by leading the current signal (pin
13) through an internal shunt resistor (pin 12). At current signals in the ranges
0...1 VDC, a 50
Ω
shunt (JP1) is applied; in the ranges 0...10 VDC, a 500
Ω
shunt
(JP2) is applied.
PROGRAMMABLE f/I - f/f cONVERTER
5225
• Pulse conditioning
• Frequency generator
• Concurrent f/I and f/f function
• Analogue current and voltage output
• PNP / NPN output, optional relays
• Programmable by PC and Loop Link
---------------------------------------------------------------------------------------
Supply voltage:
24 VDc
---------------------------------------------------------------------------------------
INPuT RANGE:
frequency:
0...20000 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...20000 Hz
---------------------------------------------------------------------------------------
IN GENERAL
By way of a standard PC and the Loop Link programming kit, the PRecon 5225
f/I - f/f Converter is configured acc. to the requested function.
Alternatively, the 5225 may be delivered fully-configured acc. to your
specifications, see the options index in the data sheet.
Typical pulse sources are flow meters, tacho generators, mechanical switches,
or inductive proximity sensors.
