Product Description

​The VAR-KE3-TERM is an advanced AS-Interface (ASi) repeater with an integrated terminator, designed to extend network lengths and enhance communication reliability in industrial automation systems. It allows for an additional 100 meters of line length, with a maximum of two repeaters in series, and provides galvanic isolation between ASi segments A and B. The device requires no parameterization and does not need a specific address on the ASi bus. Its housing features removable terminals for easy installation, and the built-in terminator supports network lengths of up to 200 meters on Segment A.

Technical Specifications

• AS-Interface Specification: V3.0​
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• Required Gateway Specification: ≥ V2.0​
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• UL File Number: E223772 (only from low voltage, limited energy source [SELV or PELV] or listed Class 2 source)​
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• Functional Safety MTTFₑ: 155 years​
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• Indicators/Operating Means:
• Switch: TERM ON/OFF (activates/deactivates the Segment A terminator)​
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• LED Indicators:
• FAULT SEG A: Red LED indicating communication errors on Segment A
• FAULT SEG B: Red LED indicating communication errors on Segment B
• PWR SEG A: Green LED indicating AS-Interface voltage presence on Segment A
• PWR SEG B: Green LED indicating AS-Interface voltage presence on Segment B
• TERM: LED indicating the Segment A bus terminator status
• U>26V: LED indicating Segment A voltage >26 V
• U>18.5V: LED indicating Segment A voltage >18.5 V
• Electrical Specifications:
• Insulation Voltage: ≥ 500 V​
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• Rated Operating Voltage: 26.5 to 31.6 V from AS-Interface​
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• Rated Operating Current: 60 mA per strand element, 120 mA total​
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• Directive Conformity:
• Electromagnetic Compatibility: Directive 2014/30/EU; EN 62026-2:2013; EN 61000-6-2:2005; EN 61000-6-4:2007; EN 61000-6-3:2001; IEC 62026-2:2008​
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• Approvals and Certificates:
• UL Approval: An isolated source with a secondary open circuit voltage of ≤30 V DC with a 3 A maximum overcurrent protection. Overcurrent protection is not required when a Class 2 source is employed. The UL mark does not provide certification for any functional safety rating or aspects of the device.​
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• Ambient Conditions:
• Ambient Temperature: 0 to 55 °C (32 to 131 °F)​
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• Storage Temperature: -25 to 75 °C (-13 to 167 °F)​
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• Mechanical Specifications:
• Degree of Protection: IP20 according to EN 60529​
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• Connection: Removable terminals, terminal connection ≤2.5 mm²​
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• Housing Material: PA 66-FR​
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• Dimensions: 99 mm (height) x 22.5 mm (width) x 114 mm (depth)​
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• Mounting: DIN rail mounting