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 kVacWorking 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 bitSignal/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 kΩResponse 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
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