PR 4179

Description

Application

• The 0…5 AAC RMS range makes it possible to accurately measure a typical current transformer.
• The 0…300 VAC RMS range allows accurate supply voltage monitoring.
• The 4179 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…1 VAC RMS input = ±10 volt or 4…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.
• The 4179 provides the required failure data (SFF and PFD_AVG) for SIL 2 applications as per IEC 61508 / IEC 61511.
• Failure rates for 4179 correspond to Performance Level “d” according to ISO-13849.

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…20 mA output.
• The current output can drive up to 800 Ohms, with an adjustable response time of 0.0…60.0 seconds.
• Exceptional mA output load stability of <0.001% of span / 100 Ohm.
• 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.
• 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 PR’s 4500 series of detachable displays.
  

  Environmental Conditions

  Operating temperature	-20°C to +60°C
  Storage temperature	-20°C to +85°C
  Calibration temperature	20…28°C
  Relative humidity	< 95% RH (non-cond.)
  Protection degree	IP20
  Installation in	Pollution degree 2 & meas. / overvoltage cat. II

  Mechanical specifications

  Dimensions (HxWxD)	109 x 23.5 x 104 mm
  Dimensions (HxWxD) w/ PR 4500	109 x 23.5 x 131 mm
  Weight approx.	155 g
  Weight incl. 4501 / 451x (approx.)	170 g / 185 g
  DIN rail type	DIN EN 60715/35 mm
  Wire size	0.13…2.08 mm2 AWG 26…14 stranded wire
  Screw terminal torque	0.5 Nm
  Vibration	IEC 60068-2-6
  2…13.2 Hz	±1 mm
  13.2…100 Hz	±0.7 g

  Common specifications

  Supply
  Supply voltage, universal	21.6…253 VAC, 50…60 Hz or 19.2…300 VDC
  Max. required power	1.6 W
  Max. power dissipation – current measurement	2.7 W
  Max. power dissipation – voltage measurement	1.6 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	PR 4500 communication interfaces
  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…5 AAC / 40…400 Hz
  Maximum input limit	6.00 AAC @ 40°C
  Programmable measurement ranges	0…0.5; 0…1; 0…2.5 & 0…5 AAC
  Custom configurable signal range	0…5 AAC /40…400 Hz
  Min. measurement range (span)	0.5 AAC
  Input resistance	< 0.042 Ω (incl. terminals)
  Voltage input
  Signal range	0…300 VAC / 40…400 Hz
  Programmable measurement ranges	0…0.5, 0…1, 0…2.83, 0…5, 0…120, 0…230 & 0…300 VAC
  Custom configurable signal range	0…300 VAC / 40…400 Hz
  Min. measurement range (span)	0.5 VAC
  Input resistance	Nom. 3 MΩ || 100 pF

  Output specifications

  Active unipolar and bipolar mA output
  Programmable ranges	0…20, 4…20 and S4…20 mA ±10 and ±20 mA Direct or Inverted Action
  Load (@ current output)	≤ 800 Ω
  V-curve function, active signals, 100-0-100%	20-0-20 mA
  Passive 2-wire mA output
  Programmable ranges	0…20 and 4…20 mA Direct or Inverted action
  V-curve function, 100-0-100%	20-0-20 mA
  External loop supply	3.5…30 V
  Current output
  Signal range	0…23 mA (unipolar) -23…+23 mA (bipolar)
  Current limit	≤ 28 mA (unipolar) ± 28 mA (bipolar)
  Load stability	≤ 0.001% of span / 100 Ω
  Response time, programmable	0.0…60.0 s
  Voltage output
  Programmable signal ranges	0/0.2…1; 0/1…5 ; 0/2…10; 1…0.2/0; 5…1/0; 10…2/0 V ±1, ±5 and ±10 V 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…60.0 s

  Observed authority requirements

  EMC	2014/30/EU & UK SI 2016/1091
  LVD	2014/35/EU & UK SI 2016/1101
  RoHS	2011/65/EU & UK SI 2012/3032
  EAC	TR-CU 020/2011

  Approvals

  c UL us, UL 508	E248256
  SIL	Hardware assessed for use in SIL applications

  NB

  * / **

  For custom configurable signal ranges, general accuracy and EMC specifications are 0.3% of full scale