Description
PR electronics 2281 24 VDC 0/4-20 mA 0-10 VDC 11-pole socket ramp generator is a microprocessor-controlled device featuring a 3-digit LED display and three front-panel function keys for local configuration. The unit provides high-precision analog outputs including 0…20 mA and 0…10 VDC, driven by six digital inputs configurable for NPN or PNP logic with an 8 VDC trigger level. The internal architecture utilizes digital filtering for contact-bounce elimination with selectable time constants of 0.5 ms or 10 ms. The hardware is housed in a compact enclosure designed for standard 11-pole relay socket mounting and includes EEPROM memory for parameter retention during power loss.
2281 Specifications
Model: 2281
Brand: PR electronics
Product Category: Ramp Generator
Supply Voltage: 24 VDC
Digital Inputs: 6 (NPN or PNP)
Input Trigger Level: 8 VDC
Input Resistance: 3.5 kΩ
Input Load Current: 6.9 mA
Analog Output (Current): 0/4…20 mA or 0/2…10 mA
Analog Output (Voltage): 0/0.2…1 VDC or 0/2…10 VDC
Max Output Load: 600 Ω / 12 VDC
Ramp Time Range: 0.1 to 999,999 s
Display Type: 3-digit LED
User Interface: 3 function keys
Mounting Type: 11-pole relay socket
Input Filter Time: > 0.5 ms or > 10 ms
Reset Filter Time: > 30 ms
Operating Temperature: -20 to 60 °C
Calibration Temperature: 20 to 28 °C
Relative Humidity: < 95 % RH
Protection Degree: IP 50 (front panel)
Internal Memory: EEPROM
Galvanic Isolation: Yes
2281 Applications
Primary applications include integration into industrial control panels for time-controlled signal ramping and motor speed setpoint management. Deployed within automated manufacturing systems to convert digital pulse sequences from 2-phase encoders into proportional analog position signals. Utilized in process control loops requiring precise signal isolation and ramp-up/ramp-down functionality for soft-start operations.
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