Weidmuller HART® Transparent Driver

  

 

 HART® transparent driver 

 

The ACT20X-SAI-HAO/2SAI-2HAO current output isolators are suitable for controlling field devices in Ex areas, up to Zone 0. The input/output-side HART protocol transparent signal connection is implemented using 4 to 20 mA current loops. Integrated alarm contacts issue an alert in the event of a malfunction; this makes troubleshooting easier and increases system availability. The rail-mounted current output isolators are optionally available in one- or two-channel versions. With 11 mm width per channel, the devices need little space in the electrical cabinet.

Specifications (ACT20X and ACT20X-SAI-HAO-S)

Dimensions and weights

• Width : 22.5 mm
• Width (inches) : 0.886 inch
• Height : 119.2 mm
• Height (inches) : 4.693 inch
• Depth : 113.6 mm
• Depth (inches) : 4.472 inch
• Net weight : 189 g

Temperatures

• Humidity : 0...95 % (no condensation)
• Operating temperature, max. : 60 °C
• Operating temperature, min. : -20 °C
• Storage temperature, max. : 85 °C
• Storage temperature, min. : -20 °C
• Operating temperature : -20 °C...60 °C
• Storage temperature : -20 °C...85 °C

Probability of failure

• MTBF : 135 Years
  

Environmental Product Compliance

• REACH SVHC : Lead 7439-92-1

Rated data UL

• UL certificate : E337701.pdf

Input EX

• Input current : 4…20mA
• Input frequency : 0,5…2,5 kHz @ 3,5…23 mA bi-directional HART® signal
• Output signal in case of wire break : < 1 mA
• Voltage drop : < 2 V
• Voltage drop not powered : < 6 V
• Voltage drop powered : < 2 V

Input

• Input current : 4…20mA
• Input frequency : 0,5…2,5 kHz @ 3,5…23 mA bi-directional HART® signal
• Voltage drop : < 2 V

Output

• Type : intrinsically safe circuit
• Influence of load resistance : ≤ 0.01% of span / 100 Ω
• 2-wire supply : > 14.5 V @ 20 mA
• Output signal limit : < 28 mA
• Residual ripple (current loop) : < 7.5 mVeff
• Output current : 4…20 mA (max. 23 mA)
• Cut-off frequency (-3 dB) : 0.5…2.5 kHz @ 3.5…23 mA bi-directional HART® signal
• Load impedance current : ≤ 725 Ω

Alarm output

• Alarm function : Signal limit exceeded, Line interruption at the input, No supply voltage, Device error
• Type : Relay, 1 NO (voltage-free)
• Nominal switching voltage :
  ≤ 125 V AC / 110 V DC (safe area)
  ≤ 32 V AC / 32 V DC (zone 2)
• Continuous current :
  ≤ 0,5 A AC / 1 A DC (zone 2)
• Power rating :
  ≤ 62.5 VA / 32 W (safe area)
  ≤ 16 VA / 32 W (Zone 2)
• Hysteresis :
  0.1 mA (switching threshold)
  Switching thresholds 0…29.9 mA (programmable)

General specifications

• Configuration : With FDT/DTM software
• Voltage supply : 19.2…31.2 V DC
• Type of connection : Screw connection
• Power consumption : ≤ 1.0 W
• Accuracy : < 0.1% span
• Temperature coefficient : < 0.01% of span/°C (TU)
• Step response time : ≤ 5 ms
• Protection degree : IP20
• Humidity : 0...95 % (no condensation)

Insulation coordination

• EMC standards : DIN EN 61326, NE 21
• Insulation voltage : 2.6 kV (input / output)
• Rated voltage : 300 V

Data for Ex applications (ATEX)

• Voltage U0 : 28 V DC
• Current I0 : 93 mA
• Power P0 : < 650 mW
• Marking:  II (1) G [Ex ia Ga] IIC/IIB/ IIA, II (1) D [Ex ia Da] IIIC, I (M1) [Ex ia Ma] I
• Installation location : Device installed in safe area, zone 2

Safety-related basic specifications

• Demand mode : High
• Description of the "safe state" : analogue Output ≤ 3.6 mA or output ≥ 21 mA
• Device type : A
• Hardware fault tolerance (HFT) : 0
• Mean Time To Repair (MTTR) : 24 h
• Safe Failure Fraction (SFF) : 85 %
• Tproof : 5 Years
• Total failure rate for dangerous detected failures (λDD) : 127 FIT
• Total failure rate for dangerous undetected failures (λDU) : 48 FIT
• Total failure rate for safe detected failures (λSD) : 0 FIT
• Total failure rate for safe undetected failures (λSU) : 164 FIT
• Safety category : SIL 2
• Probability of outage PFH : 4.8 x 10-8 h-1

Safety-related specifications Low demand mode

• Average Probability of Failure on Demand (PFDavg) :
  2.29 x 10-4 (Tproof = 1 year), 4.37 x 10-4 (Tproof = 2 years), 1.06 x 10-4 (Tproof = 5 year)

Connection data

• Type of connection : Screw connection
• Tightening torque, min. : 0.4 Nm
• Tightening torque, max. : 0.6 Nm
• Clamping range, rated connection : 2.5 mm²
• Clamping range, min. : 0.25 mm²
• Clamping range, max. : 2.5 mm²
• Wire connection cross section AWG, min. : AWG 26
• Wire connection cross section AWG, max. : AWG 12

Classifications

• ETIM 6.0 : EC002475
• ETIM 7.0 : EC002475
• eClass 9.0 : 27-21-01-23
• eClass 9.1 : 27-21-01-23
• eClass 10.0 : 27-21-01-23
• UNSPSC : 30-21-18-01

Product information

• Weidmüller provides an extended guarantee period of 36 months for this device.

Approvals

• UL, Ex, DNV, DNV-GL, EAC, FM, IECEx
• ROHS : Conform

Download Datasheet : Weidmuller HART® Transparent Driver

Reference : weidmueller.com

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