Single-phase Voltage Relay K8AB-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 Mode (H/HH and L/LL operating modes) Two SPDT output relays, 6 A at 250 VAC (resistive load). Process control signal (0 to 10 V) and current splitter input supported. Relay warning status easily monitoring using LED indicator. Input frequency of 40 to 500 Hz supported. Easy wiring with ferrules 2 2 2 2.5 mm solid or 2 1.5 mm standard ferrules. CE mark compliance certified by third party. UL certification pending. Model Number Structure Model Number Legend K8AB- 123 4 1. Basic Model K8AB: Measuring and Monitoring Relays 2. Functions VW: Single-phase Voltage Relay (Simultaneous upper and lower limit monitoring) 3. Measuring Current 1: 6 to 60 mV AC/DC, 10 to 100 mV AC/DC, 30 to 300 mV AC/DC 2: 1 to 10 V AC/DC, 3 to 30 V AC/DC, 15 to 150 V AC/DC 3: 20 to 200 V AC/DC, 30 to 300 V AC/DC, 60 to 600 V AC/DC 4. Supply Voltage 24 VDC: 24 VDC 24 VAC: 24 VAC 100-115 VAC: 100 to 115 VAC 200-230 VAC: 200 to 230 VAC Cat. No. N144-E1-01 Single-phase Voltage Relay K8AB-VW 1Ordering Information List of Models Single-phase Voltage Relay Measuring voltage Supply voltage Model (See note.) 6 to 60 mV AC/DC, 24 VDC K8AB-VW1 24 VDC 10 to 100 mV AC/DC, 24 VAC K8AB-VW1 24 VAC 30 to 300 mV AC/DC 100-115 VAC K8AB-VW1 100-115 VAC 200-230 VAC K8AB-VW1 200-230 VAC 1 to 10 V AC/DC, 24 VDC K8AB-VW2 24 VDC 3 to 30 V AC/DC, 24 VAC K8AB-VW2 24 VAC 15 to 150 V AC/DC 100-115 VAC K8AB-VW2 100-115 VAC 200-230 VAC K8AB-VW2 200-230 VAC 20 to 200 V AC/DC, 24 VDC K8AB-VW3 24 VDC 30 to 300 V AC/DC, 24 VAC K8AB-VW3 24 VAC 60 to 600 V AC/DC 100-115 VAC K8AB-VW3 100-115 VAC 200-230 VAC K8AB-VW3 200-230 VAC Note: The rated input depends on the connected terminals. Select the terminals suitable for the inputs, and connect the inputs to V1-COM, V2- COM, and V3-COM. Ratings and Specifications Ratings Operating Non-isolated power supply 24 VDC (1 W) power Isolated power supply 24 VAC (4 VA), 100 to 115 VAC (4 VA), 200 to 230 VAC (5 VA) Operation Operating value setting 10% to 100% of maximum rated input value (AL1 and range AL2) Operating value 100% operation at set value Reset (HYS.) Hysteresis 5% of operating value (fixed) Resetting method Manual reset/automatic reset (switchable) Manual reset: Turn OFF operating power for 1 s or longer. Operating time (T) 0.1 to 30 s (Value when input rapidly changes from 0% to 120%.) Power ON lock (LOCK) 1 s or 5 s error 0.5 s (Value when input rapidly changes from 0% to 100%. The operating time is the shortest at this point.) Setting accuracy 10% of full scale Time error 10% of set value (Minimum error: 50 ms) Input frequency 40 to 500 Hz Input impedance K8AB-VW1: 9 k min. K8AB-VW2: 100 k min. K8AB-VW3: 1 M min. Indicators Power (PWR): Green LED, Relay output (RY): Yellow LED, Alarm outputs (ALM1/2): Red LED Output relays Two SPDT relays (6 A at 250 VAC, resistive load), Normally closed operation (normally ON) (separate outputs possible for overvoltages and undervoltages) 2 Single-phase Voltage Relay K8AB-VW Cat. No. N144-E1-01