KHA6-SH-Ex1 Switch Amplifier
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- 1-channel isolated barrier
- 115/230 V AC supply
- Input for approved dry contacts or SN/S1N sensors
- Relay contact output
- Fault indication output
- Line fault detection (LFD)
- Up to SIL 3 acc. to IEC/EN 61508
- Up to PL d acc. to EN/ISO 13849
Description
Product Details
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 1 relay contact output with 3 NO contacts (1 output is in series to the both output relays for the safety function), 1 relay contact output with 1 NO contact, and 1 passive transistor output (fault indication output).
Unlike an SN/S1N series proximity sensor, a mechanical contact requires a 10 kΩ resistor to be placed across the contact in addition to a 1.5 kΩ resistor in series.
Lead breakage (LB) and short circuit (SC) conditions of the control circuit are continuously monitored.
During an fault condition, the fault indication output energizes and outputs I and II de-energize.
For safety applications up to SIL 3, output I must be used. For safety applications up to SIL 2, output I and output II can be used.
Technical data
General specifications
| Signal type | Digital Input |
Functional safety related parameters
| Safety Integrity Level (SIL) | SIL 3 | |
| Systematic capability (SC) | SC 3 | |
| Performance level (PL) | PL d |
Supply
| Connection | terminals 22, 23, 24 | |
| Rated voltage | Ur | 85 … 253 V AC , 45 … 65 Hz |
| Rated current | Ir | 30 mA ± 5 mA |
| Power dissipation | 2.2 W | |
| Power consumption | max. 2.3 W |
Input
| Connection side | field side | |||||||
| Connection | terminals 10+, 12- | |||||||
| Open circuit voltage/short-circuit current | approx. 8.4 V DC / approx. 11.7 mA | |||||||
| Lead resistance | ≤ 50 Ω, in hazardous area cable capacitances and inductivities are to be taken into account | |||||||
| Switching point | ||||||||
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| Response delay | ≤ 1 ms | |||||||
Output
| Connection side | control side | |||||||
| Connection | output I: terminals 13, 14 ; output II: terminals 15, 21 ; output III: terminals 16+, 17- | |||||||
| Output I | relay, signal | |||||||
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| Output II | relay, signal | |||||||
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| Output III | electronic output, passive, fault signal | |||||||
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Transfer characteristics
| Switching frequency | 5 Hz |
Indicators/settings
| Display elements | LEDs | |
| Labeling | space for labeling at the front |
Directive conformity
| Electromagnetic compatibility | |||||
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| Low voltage | |||||
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| Machinery Directive | |||||
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Conformity
| Electromagnetic compatibility | NE 21:2017, EN 61326-3-1:2017 | |
| Degree of protection | IEC 60529:2001 | |
| Safety | IEC/EN 61508:2010 |
Ambient conditions
| Ambient temperature | -20 … 60 °C (-4 … 140 °F) |
Mechanical specifications
| Degree of protection | IP20 | |
| Connection | screw terminals | |
| Mass | approx. 280 g | |
| Dimensions | 40 x 93 x 115 mm (1.6 x 3.7 x 4.5 inch) (W x H x D), housing type E | |
| Mounting | on 35 mm DIN mounting rail acc. to EN 60715:2001 |
Data for application in connection with hazardous areas
| EU-type examination certificate | PTB 00 ATEX 2043 | ||||||||||||||||
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| Galvanic isolation | |||||||||||||||||
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General information
| Supplementary information | Observe the certificates, declarations of conformity, instruction manuals, and manuals where applicable. For information see www.pepperl-fuchs.com. |