Product details
Intrinsic safety & signal conditioning
Two channel digital input switch amplifier - 20mm
This isolated barrier is used for intrinsic safety applications. The device transfers digital signals (SN/S1N proximity sensors or approved dry contacts) from a hazardous area to a safe area.
The input controls one relay contact output with 3 NO contacts (one output is in series to the both output relays for the safety function), one relay contact output with one NO contact, and one passive transistor output.
Unlike an SN/S1N series proximity sensor, a mechanical contact, requires a 10kΩ resistor to be placed across the contact in addition to a 1.5kΩ resistor in series.
Lead breakage (LB) and short circuit (SC) conditions of the control circuit are continuously monitored.
During a fault condition, the fault indication output energizes and outputs I and II de-energize.
For safety applications up to SIL3, output I must be used. For safety applications up to SIL2, output I and output II can be used.
Technical specification
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| Input/Output: | Digital input
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| Channels: | 1
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| Output relay: | 1
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| Supply voltage: | 20-30V d.c.
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| Mounting: | 35mm DIN rail or panel mount
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| Ambient temperature: | -20 to +60°C
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| Vibration resistance: | acc. to EN60068-2-6,
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| 10Hz to 150Hz, 1g, frequency
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| Shock resistance: | acc. to EN60068-2-27,
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| 15g, 11mS, half-sine
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| Protection rating: | IP20
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| Dimensions: | w40 x h107 x d115mm |
Features:
Single channel isolated barrier
24V d.c. supply (Power Rail)
Input for approved dry contacts or SN/S1N sensors
Relay output
Fault indication output
Line fault detection (LFD)
Up to SIL3 acc. to IEC 61508
Up to PL d acc. to EN ISO 13849
