PR Electronics 4222 – Universal I/F Converter

Features

  • 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
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PR Electronics 4222 – Universal I/F Converter

Advanced features

  • Programmable through a detachable display front (model 4501), enabling process calibration, signal simulation, password protection, error diagnostics, and selection of help text in multiple languages.

Applications:

  • Provides linearized, electronic temperature measurement using RTD or TC sensors.
  • Converts linear resistance variations into frequency signals, applicable for solenoids, butterfly valves, or linear movements with attached potentiometers.
  • Supplies power and signal isolation for 2-wire transmitters.
  • Facilitates process control by transmitting a frequency signal to devices such as PLCs or process computers.
  • Offers galvanic separation and conversion of analog signals to frequency signals.

Technical Characteristics:

  • In combination with the 4501 display/programming front, the 4222 allows modification of all operational parameters to fit any application. The design eliminates the need to open the device to set DIP switches due to its electronic hardware switches.
  • A green front LED indicates normal operation.
  • Continuously checks vital stored data for safety.
  • Provides 3-port 2.3 kVAC galvanic isolation.

Specification

ENVIRONMENTAL CONDITIONS
Operating temperature -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/ 4501/451x 109 x 23.5 x 116 / 131 mm
Weight approx. 155 g
Weight incl. 4501 / 451x (approx.) 170 g / 185 g
Wire size 0.13…2.08 mm2 AWG 26…14 stranded wire
Screw terminal torque 0.5 Nm
COMMON SPECIFICATIONS
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 45xx
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
INPUT SPECIFICATIONS
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
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
OBSERVED AUTHORITY REQUIREMENTS
EMC 2014/30/EU
LVD 2014/35/EU
RoHS 2011/65/EU
EAC TR-CU 020/2011
EAC LVD TR-CU 004/2011
APPROVALS
c UL us, UL 508 / C22.2 No. 14 E231911
FM 3025177

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