Cookies on the OMEGA websites We use cookies on this website, these cookies are essential for the website to work correctly.If you continue without changing your settings, we'll assume that you are happy to receive all cookies on this website.To find out more information about these cookies please click here.
Application
• The 0 to 5 AAC RMS range makes it possible to accurately measure a typical current transformer.
• The 0 to 300 Vac RMS range allows accurate supply voltage monitoring.
• DRST-AC measures standard input ranges, and can be freely configured to customer-defined input range.
• Converts narrow AC current/voltage inputs to wide bipolar or unipolar outputs, e.g. 0 to 1 VAMS input = ±10 volt or 4 to 20 mA output with a minimum span of 0.5 AAC RMS or 0.5 Vac RMS.
• Configurable input limits control the output value for increased safety. Technical Characteristic
• The latest analog and digital techniques are used to obtain maximum accuracy and immunity to interference.
• Possibility of output safety feedback by selecting S4 to 20 mA output.
• The current output can drive up to 800 Ω, with an adjustable response time of 0.0 to 60.0 seconds.
• Exceptional mA output load stability of <0.001% of span/100 Ω .
• Meets the NAMUR NE21 recommendations, ensuring high accuracy in harsh EMC environments.
• Meets the NAMUR NE43 recommendations, allowing the control system to easily detect an input error.
• Each unit is tested to a high 2.3 kVac, 3-port galvanic isolation level.
• Excellent signal to noise ratio of > 60 dB. Mounting/Installation/Programming
• Very low power consumption means units can be mounted side by side without an air gap – even at 60°C ambient temperature.
• Configuration, monitoring, 2-point process calibration and more are accomplished using either the 4501 detachable display or the 4511 detachable digital communication enabler.
• All programming can be password-protected.
Specifications Environmental Conditions Operating Temperature: -20 to 60°C Calibration Temperature: 20 to 28°C Relative Humidity: < 95% RH (non-cond.) Protection Degree: IP20 Installation In: Pollution degree 2 and measurement/overvoltage cat. II 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: 250 g Weight incl. 4501/4511 (approx.): 285 g / 350 g DIN Rail Type: DIN EN 60715/35 mm Wire Size: 0.13 to 2.08 mm 2 AWG 26 to 14 stranded wire Screw Terminal Torque: 0.5 Nm Vibration: IEC 60068-2-6 2 to 13.2 Hz: ±1 mm 13.2 to 100 Hz: ±0.7 g Common Specifications Supply Supply Voltage, Universal: 21.6 to 253 Vac, 50 to 60 Hz or 19.2 to 300 Vdc Max. Required Power: ≤ 1.8 W nom. Internal Power Dissipation: ≤ 2.5 W Isolation Voltage Test Voltage: 2.3 kVac
Working Voltage: 250 Vac (reinforced)/500 Vac (basic) Response Time Response Time (0...90%, 100...10%): < 0.75 s Programming:Communication enabler/Programming front DRSL-DISPLAY Signal Dynamics, Input: 20 bit Signal Dynamics, Output: 18 bit
Signal/Noise Ratio: > 60 dB Output Referred Common Mode Rejection Ratio" 0.02 ppm/VHz Accuracy: Better than 0.3% of selected range* EMC Immunity Influence: < ±0.5% of span*
Extended EMC immunity: NAMUR NE21, A Criterion, Burst: < ±1% of span* Of Span: = of selected standard range Input Specifications Current Input Signal Range: 0 to 5 AAC/40 to 400 Hz Maximum Input Limit: 6.00 AAC @ 40°C Programmable Measurement Ranges: 0 to 0.5; 0 to 1; 0 to 2.5 and 0 to 5 AAC
Custom Configurable Signal Range: 0 to 5 AAC/40 to 400 Hz Min. Measurement Range (Span): 0.5 AAC Input Resistance: Nom. < 0.07 Ω Voltage Input Signal Range: 0 to 300 Vac/40 to 400 Hz Programmable Measurement Ranges:0 to 0.5, 0 to 1, 0 to 2.83, 0 to 5, 0 to 120, 0 to 230 and 0 to 300 Vac
Custom Configurable Signal Range: 0 to 300 Vac/40 to 400 Hz Min. Measurement Range (Span): 0.5 Vac Input Resistance:Nom. 3 MΩ || 100 pF Output Specifications Active Unipolar and Bipolar mA Ooutput Programmable Ranges: 0 to 20, 4 to 20 and S4 to 20 mA Programmable Ranges: ±10 and ±20 mA Programmable Ranges: Direct or Inverted Action Load (@ Current Output): ≤ 800 Ω V-Curve Function, Active Signals, 100-0-100%: 20-0 to 20 mA Passive 2-Wire mA Output Programmable Ranges: 0 to 20 and 4 to 20 mA Programmable Ranges: Direct or Inverted action V-Curve Function, 100-0 to 100%: 20-0 to 20 mA External Loop Supply: 3.5 to 30 V Current Output Signal Range: 0 to 23 mA (unipolar) Signal Range: -23 to +23 mA (bipolar) Current Limit: ≤ 28 mA (unipolar) Current Limit: ± 28 mA (bipolar) Load Stability: ≤ 0.001% of span / 100 Ω Response Time, Programmable: 0.0 to 60.0 s Voltage Output Programmable Signal Ranges: 0/0.2 to 1; 0/1 to 5 ; 0/2 to 10; 1 to 0.2/0; 5 to 1/0; 10 to 2/0 V Programmable Signal Ranges: ±1, ±5 and ±10 V Programmable Signal Ranges: Direct or Inverted Action V-Curve Function, 100-0-100%:1-0-1, 5-0-5 and 10-0-10 V Load (@ Voltage Output): ≥ 500 kΩ
Response Time, Programmable: 0.0 to 60.0 s Observed Authority Requirements EMC: 2014/30/EU LVD: 2014/35/EU RoHS: 2011/65/EU Approvals UL: UL 508 / C22.2 no. 14 NB: For custom configurable signal ranges, general accuracy and EMC specifications are 0.3% of full scale