Name: Universal I/f converter 4222
Rating: 5.0 (1 reviews)

Universal I/f converter

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Programmable via detachable display front (PR 4500), process calibration, signal simulation, password protection, error diagnostics and selection of help text in several languages.

Linearized, electronic temperature measurement with RTD or TC sensor.
Conversion of linear resistance variation to a frequency signal, e.g. from solenoids and butterfly valves or linear movements with attached potentiometer.
Power supply and signal isolator for 2-wire transmitters.
Process control by way of a frequency signal transmitted to e.g. a PLC or a process computer.
Galvanic separation and conversion of analog signals to frequency signals.

When 4222 is used in combination with the PR 4500 display / programming front, all operational parameters can be modified to suit any application. As the 4222 is designed with electronic hardware switches, it is not necessary to open the device for setting of DIP switches.
A green front LED indicates normal operation.
Continuous check of vital stored data for safety reasons.
3-port 2.3 kVAC galvanic isolation.

Supply
Supply voltage, universal	21.6...253 VAC, 50...60 Hz or 19.2...300 VDC
Fuse	400 mA SB / 250 VAC
Max. required power	≤ 2.5 W
Max. power dissipation	≤ 2.5 W
Isolation voltage
Isolation voltage, test / working	2.3 kVAC / 250 VAC
Response time
Temperature input, programmable (0...90%, 100...10%)	1...60 s
mA / V input (programmable)	0.4...60 s
Auxiliary supplies
2-w. supply (term. 44...43)	25...16 VDC / 0...20 mA
Programming	PR 4500 communication interfaces
Signal / noise ratio	Min. 60 dB (0...100 kHz)
Accuracy	Better than 0.1% of sel. range
EMC immunity influence	< ±0.5% of span
Extended EMC immunity: NAMUR NE21, A criterion, burst	< ±1% of span

RTD input
RTD type	Pt100, Ni100, lin. R
Cable resistance per wire	50 Ω (max.)
Sensor current	Nom. 0.2 mA
Sensor error detection	Yes
Short circuit detection	< 15 Ω
TC input
Thermocouple type	B, E, J, K, L, N, R, S, T, U, W3, W5, LR
CJC via int. mounted sensor	< ±1.0°C
Sensor error detection	Yes
Sensor error current: When detecting / else	Nom. 2 μA / 0 μA
Current input
Measurement range	0...23 mA
Programmable measurement ranges	0...20 and 4...20 mA
Input resistance	Nom. 20 Ω + PTC 50 Ω
Voltage input
Measurement range	0...12 VDC
Programmable measurement ranges	0/0.2...1, 0/0.5...2.5, 0/1...5, 0/2...10 VDC
Input resistance	Nom. 10 MΩ

Frequency output range	0...25000 Hz
Min. frequency (span)	0 Hz
Other output types	PNP, NPN and TTL
Sensor error indication, programmable	0...26250 Hz
of span	= of the currently selected measurement range