4222
Universal I/f converter
- Input for RTD, TC, Ohm, potentiometer, mA and V
- Frequency output NPN, PNP and TTL
- Generates frequencies from 0.001...25000 Hz
- 2-wire supply > 16 V
- Universal AC or DC supply
Manuals : 
Data sheet :
Advanced features
- Programmable via detachable display front (4501), process calibration, signal simulation, password protection, error diagnostics and selection of help text in several languages.
Application
- 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.
Technical characteristics
- When 4222 is used in combination with the 4501 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.
Environmental Conditions
Specifications range -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 104 mm Dimensions (HxWxD) w/ 4501 / 4511 109 x 23.5 x 116 / 131 mm Weight approx. 155 g Weight incl. 4501 / 4511 (approx.) 170 g / 255 g Wire size 1 x 2.5 mm2 stranded wire Screw terminal torque 0.5 Nm Common specifications
Supply voltage, universal 21.6...253 VAC, 50...60 Hz or 19.2...300 VDC Fuse 400 mA SB / 250 VAC Max. power consumption ≤ 2.5 W Isolation voltage, test / working 2.3 kVAC / 250 VAC Communications interface Communication enabler 4511 / Programming front 4501 Signal / noise ratio Min. 60 dB (0...100 kHz) Response time (0...90%, 100...10%): Temperature input (programmable) 1...60 s mA / V input (programmable) 0.4...60 s Accuracy Better than 0.1% of selected range Auxiliary supplies: 2-wire supply (terminal 44...43) 25...16 VDC / 0...20 mA EMC immunity influence < ±0.5% of span Extended EMC immunity: NAMUR NE 21, A criterion, burst < ±1% of span Input specifications
RTD input Pt100, Ni100, lin. R Potentiometer Cable resistance per wire (max.), RTD 50 Ω Sensor current, RTD Nom. 0.2 mA Sensor error detection, RTD Yes Short circuit detection, RTD < 15 Ω TC input: Thermocouple type B, E, J, K, L, N, R, S, T, U, W3, W5, LR CJC via internally mounted sensor < ±1.0°C Sensor error detection, TC Yes Sensor error current: When detecting / else Nom. 2 μA / 0 μA Current input: Measurement range 0...20 mA Current input: Programmable measurement ranges 0...20 and 4...20 mA Input resistance, current input Nom. 20 Ω + PTC 50 Ω Voltage input: Measurement range 0...12 VDC Programmable measurement ranges, VDC 0/0.2...1, 0/0.5...2.5, 0/1...5, 0/2...10 VDC Input resistance, voltage input Nom. 10 MΩ Output specifications
Frequency output range 0...25000 Hz Min. frequency (span) 0.001 Hz Other output types PNP, NPN and TTL Sensor error indication, programmable 0...26250 Hz *of span = of the currently selected measurement range Approvals
EMC EN 61326-1 LVD 2006/95/EC EN 61010-1 UL UL 508 EAC TR-CU 020/2011 EN 61326-1