Function
This isolated barrier is used for intrinsic safety applications.
The device transfers digital signals from NAMUR sensors or dry contacts from the hazardous area to the non-hazardous area.
The proximity sensor or the mechanical contact controls the control side load for a relay contact output. The device output changes the state when the input signal changes the state.
Via switches the mode of operation can be reversed and the line fault detection can be switched off.
During a fault condition, the relay reverts to its de-energized state and the LEDs indicate the fault according to NAMUR NE 44.
If the device is operated via Power Rail, additionally a collective error message is available.
General specifications
- Signal type: Digital Input
Functional safety related parameters
- Safety Integrity Level (SIL): SIL 2
- Systematic capability (SC): SC 3
Supply
- Connection: Power Rail or terminals 14+, 15-
- Rated voltage: 19 ... 30 V DC
- Ripple: ≤ 10 %
- Rated current: ≤ 50 mA
- Power dissipation: ≤ 1 W
- Power consumption: ≤ 1 W
Input
- Connection side: field side
- Connectionterminals: 1+, 2+, 3-; 4+, 5+, 6-
- Rated values: acc. to EN 60947-5-6 (NAMUR)
- Open circuit voltage/short-circuit current: approx. 8 V DC / approx. 8 mA
- Switching point/switching hysteresis: 1.2 ... 2.1 mA / approx. 0.2 mA
- Line fault detectionbreakage: I ≤ 0.1 mA , short-circuit I > 6 mA
- Pulse/Pause ratio: min. 20 ms / min. 20 ms
Output
- Connection side: control side
- Connection: output I: terminals 7, 8, 9 ; output II: terminals 10, 11, 12
- Output I, IIsignal, relay
- Contact loading: 250 V AC/2 A/cos φ > 0.75; 126.5 V AC/4 A/cos φ > 0.75; 40 V DC/2 A resistive load
- Minimum switch current: 2 mA / 24 V DC
- Energized/De-energized delay: approx. 20 ms / approx. 20 ms
- Mechanical life: 107 switching cycles
- Collective error message: Power Rail
Transfer characteristics
- Switching frequency: ≤ 10 Hz
Galvanic isolation
- Input/Output: reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 Veff
- Input/power supply: reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 Veff
- Output/power supply: reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 Veff
- Output/Output: reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 Veff
Indicators/settings
- Display elements: LEDs
- Control elements: DIP switch
- Configuration: via DIP switches
- Labelingspace for labeling at the front