2255
f/I-f/f converter
- Programmable f/I converter
- Programmable decimal divider / decimal multiplier
- Programmable frequency generator
- Relay output as option
- Supply voltage 24 VDC
Manuals : 
Data sheet :
Advanced features
- The user programmable version has a multifunction user interface consisting of three pushbuttons and a 3-digit LED displays.
Application
- Typical signalling devices may be pulse generators, for instance flow meters, tacho-generators or inductive sensors.
- The f/I function is used for frequency to current / voltage conversion.
- The f/f function is used for division or multiplication of pulses and as a buffer for fast pulse trains.
- A frequency generator function e.g. used as a time base or a clock generator.
Technical characteristics
- 3 front LEDs, indicating f.in active input (not NPN), Dig.out (NPN or relay 1) active output and a NAMUR input error signal.
- Analog current output can be configured within 0...20 mA range.
- Voltage output range is selectable between 0...10 VDC by use of internal jumpers.
- Feature include input filter, contact filter and an auxiliary supply for sensor such as NAMUR and S0.
- Mounting for a standard 11-pole socket which can be adapted for DIN rail or plate use with PR’s 7023 adaptor and 7024 mounting keying.
Environmental Conditions
Specifications range -20°C to +60°C Calibration temperature 20...28°C Relative humidity < 95% RH (non-cond.) Protection degree IP50 Mechanical specifications
Dimensions (HxWxD) 80.5 x 35.5 x 84.5 mm (D is without pins) Weight approx. 125 g Common specifications
Supply voltage 19.2...28.8 VDC Internal consumption 2.4 W Isolation voltage, test / working 1.4 kVAC / 150 VAC Warm-up time 1 min. Signal / noise ratio Min. 60 dB Response time (programmable) 60 ms to 999 s + period time Accuracy Better than 0.1% of selected range Signal dynamics, output 16 bit Effect of supply voltage change < 0.005% of span / VDC Temperature coefficient < ±0.01% of span / °C Linearity error < 0.1% of span S0 supply 15 VDC / 25 mA Special supply (programmable) 5...15 VDC / 30 mA (acc. to order) EMC immunity influence < ±0.5% Input specifications
Max. offset 90% of selec. max. value Measurement range 0...20 kHz Min. measurement range 0.001 Hz Low cut-off frequency 0.001 Hz Min. pulse length 25 μs Input types NAMUR acc. to DIN 19234 Tacho
NPN / PNP
TTL
S0 acc. to DIN 43864Output specifications
Max. offset 50% of selected max. value Current output: Signal range 0...20 mA Min. signal range 5 mA Updating time 20 ms Load (max.) 20 mA/600 Ω/12 VDC Load stability, current output ≤0.01% of span / 100 Ω Voltage output through internal shunt See manual for details Max. current, NPN output 130 mA Max. voltage, NPN output 28 VDC Frequency output range 0...1000 Hz Min. pulse length 500 μs Max. pulse length 999 ms Max. duty cycle 50% Frequency generator: Pulse length f < 50 Hz Min. 10 ms Max. 999 s Pulse length f ≥ 50 Hz 50% duty cycle Relay output: Max. switching frequency 20 Hz Max. voltage 150 VRMS Max. current 2 AAC Max. AC power 300 VA Max. load at 24 VDC 1 A *of span = of the presently selected range Approvals
EMC EN 61326-1 LVD 2006/95/EC EN 61010-1 EAC TR-CU 020/2011 EN 61326-1