Description
The Weidmuller 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 an 11 mm width per channel, the devices need little space in the electrical cabinet.
Feature
- HART-compatible for 0.5…2.5 kHz
- Configuration and diagnosis via FDT/DTM Software “WI-Manager”.
- The device can be mounted in the safe area and in zone 2 / division 2 and receive signals from zone 0, 1, 2, 20, 21, and 22, as well as Class I/II/ III, division 1, group A-G.
- The mA current signal inputs are completely electrically isolated.
- The device detects automatically whether an active or passive current signal is connected.
- Extended self-diagnostic: Monitoring of error events (e.g. cable breakage) via status relay.
- Front LEDs indicate operation status and malfunction.
- 3-way galvanic isolation between input, output, and power supply.
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: The device was installed in a safe area, zone 2
Safety-related basic specifications
- Demand mode: High
- Description of the “safe state”: analog 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
- The total failure rate for dangerous detected failures (λDD): 127 FIT
- The total failure rate for dangerous undetected failures (λDU): 48 FIT
- The total failure rate for safely detected failures (λSD) : 0 FIT
- The 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
- USPS: 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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