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2281
Ramp generator
- Multiple functions
- Programmable from front
- 3-digit LED display
- NPN and PNP inputs
- Internal ramp time or external pulses
- Reset or preset function
Advanced features
- The user interface consists of a 3-digit display and 3 function keys in the front to change a function, ramp time or an output signal range.
Application
- To convert digital signals to a time-controlled analog signal with either internally entered up/down time or with external pulses for up/down function.
- 2-phase encoder.
- Ramp generator with internal time measurement.
- Ramp generator with external pulses.
Technical characteristics
- LED’s for up, reset and down.
- 6 digital inputs make it possible to choose reset and up/down functions as either NPN or PNP input (+24 VDC).
- Via an analog switch the up and down inputs can be switched between input filters for a pulse length > 10 ms or > 0.5 ms. The 10 ms filter is used for elimination of contact-bounce.
- Analog standard current output of 0/4...20 mA or jumper selectable 0/2...10 mA, and standard voltages of 0/0.2...1 VDC, 0/2...10 VDC or special.
- 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
| Operating temperature | -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. | 120 g |
Common specifications
Supply |
|
| Supply voltage | 19.2...28.8 VDC |
| Max. required power | 2.7 W |
| Internal power dissipation | 2.4 W |
Response time |
|
| Response time | < 60 ms |
| Signal / noise ratio | Min. 60 dB |
| Signal dynamics, output | 16 bit |
| Up ramp time | 0.1...999999 s |
| Down ramp time | 0.1...999999 s |
| External pulses | 1...15,615,744 |
| Effect of supply voltage change | < 0.005% of span / VDC |
| Temperature coefficient | < ±0.01% of span / °C |
| Linearity error | < 0.1% of span |
| EMC immunity influence | < ±0.5% |
Input specifications
| Digital input |
Up / down inputs
Reset inputs |
| NPN, digital input | Pull up 24 VDC / 6.9 mA |
| PNP, digital input | Pull down 0 VDC / 6.9 mA |
| Pulse length |
>10 ms / > 0.5 ms (programmable)
> 30 ms |
| Input frequency |
50 Hz / 1 kHz (max.)
16 Hz |
Output specifications
Current output |
|
| Signal range | 0...20 mA |
| Min. signal range | 5 mA |
| Load (@ current output) | ≤ 600 Ω |
| Load stability | ≤ 0.01% of span / 100 Ω |
| Current limit | 20.5 mA |
| Voltage output through internal shunt | See manual for details |
| of span | = of the presently selected range |
Observed authority requirements
| EMC | 2014/30/EU |
| EAC | TR-CU 020/2011 |