Single-phase Overvoltage/Undervoltage Relay K8AK-VW Ideal for Voltage Monitoring for Industrial Facilities and Equipment. Monitor for overvoltages and undervoltages simultaneously. Separate settings and outputs supported for overvoltages and undervoltages. Manual resetting and automatically resetting supported by one Relay. Pre-alarm Monitoring Mode. Two SPDT output relays, 5 A at 250 VAC (resistive load). Process control signal (0 to 10 V) and current splitter input supported. Output status can be monitored using LED indicator. Input frequency of 40 to 500 Hz supported. For the most recent information on models that have been certified for Inputs are isolated from the power supply. safety standards, refer to your OMRON website. Refer to Safety Precautions on page 9. Refer to page 8 for commonly asked questions. Ordering Information List of Models Setting range Power supply voltage Model 1 to 10 V AC/DC 24 VAC/DC K8AK-VW2 24 VAC/DC 3 to 30 V AC/DC 100 to 240 VAC K8AK-VW2 100-240 VAC 15 to 150 V AC/DC 20 to 200 V AC/DC 24 VAC/DC K8AK-VW3 24 VAC/DC 30 to 300 V AC/DC 100 to 240 VAC K8AK-VW3 100-240 VAC 60 to 600 V AC/DC Ratings and Specifications Input Range Model Range* Connection terminal Setting range Input impedance Overload capacity 0 to 10 V AC/DC V1-COM Approx. 120 k 1 to 10 V AC/DC K8AK-VW2 0 to 30 V AC/DC V2-COM 3 to 30 V AC/DC Approx. 320 k Continuous input at 115% of 15 to 150 V AC/DC 0 to 150 V AC/DC V3-COM Approx. 1.6 M maximum input. 0 to 200 V AC/DC V1-COM Approx. 1.2 M 10 s at 125% 20 to 200 V AC/DC (up to 600 VAC) K8AK-VW3 0 to 300 V AC/DC V2-COM 30 to 300 V AC/DC Approx. 1.7 M 60 to 600 V AC/DC 0 to 600 V AC/DC V3-COM Approx. 3.1 M * The range is selected using connected terminals. 1K8AK-VW Ratings Power supply 24 VAC/DC Isolated power supply voltage 100 to 240 VAC 24 VAC/DC: 2.0 VA/1.1 W max. Power consumption 100 to 240 VAC: 4.6 VA max. 10% to 100% of the maximum value of the setting range K8AK-VW2: 1 to 10 V AC/DC 3 to 30 V AC/DC Operating value setting range (AL1 and AL2) 15 to 150 V AC/DC K8AK-VW3: 20 to 200 V AC/DC 30 to 300 V AC/DC 60 to 600 V AC/DC Operating value 100% operation at set value Reset value 5% of operating value (fixed) Manual reset/automatic reset (switchable) Reset method Note: Manual reset: Turn OFF power supply for 1 s or longer. Operating time setting range (T) 0.1 to 30 s Power ON lock time (LOCK) 1 s or 5 s (Switched using DIP switch.) Indicators Power (PWR): Green, Relay output (RY): Yellow, Alarm outputs (AL1, AL2): Red Input impedance Refer to Input Range on previous page. Output relays Two SPDT relays (NC operation) Rated load Resistive load 5 A at 250 VAC 5 A at 30 VDC Output relay ratings Maximum switching capacity: 1,250 VA, 150 W Minimum load: 5 VDC, 10 mA (reference values) Mechanical life: 10 million operations min. Electrical life: 5 A at 250 VAC or 30 VDC: 50,000 operations 3 A at 250 VAC or 30 VDC: 100,000 operations Ambient operating temperature 20 to 60C (with no condensation or icing) Storage temperature 25 to 65C (with no condensation or icing) Ambient operating humidity 25% to 85% (with no condensation) Storage humidity 25% to 85% (with no condensation) Altitude 2,000 m max. Terminal screw tightening torque 0.49 to 0.59 Nm Recommended wire 2 Solid wire: 2.5 mm Twisted wires: AWG16, AWG18 Note: 1. Ferrules with insulating sleeves must be used with twisted wires. Terminal wiring method 2. Two wires can be twisted together. Recommended ferrules Al 1,5-8BK (for AWG16) manufactured by Phoenix Contact Al 1-8RD (for AWG18) manufactured by Phoenix Contact Al 0,75-8GY (for AWG18) manufactured by Phoenix Contact Case color N1.5 Case material PC and ABS, UL 94 V-0 Weight Approx. 150 g Mounting Mounts to DIN Track. Dimensions 22.5 90 100 mm (WHD) 2