Omron K8AB-VS DATASHEET

Single-phase Voltage Relay

K8AB-VS

Ideal for voltage monitoring for industrial facilities and equipment.

• Monitor for overvoltages or undervoltages.

• Manual resetting and automatically resetting supported by one Relay.

• One SPDT output relay, 6 A at 250 VAC (resistive load).

• Switch the output relay between normally ON and normally OFF operation.

• 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 × 2.5 mm

• CE mark compliance certified by third party. UL certification pending.

Model Number Structure

solid or 2 × 1.5 mm2 standard ferrules.

■ Model Number Legend

K8AB-@@

123 4

1. Basic Model

K8AB: Measuring and Monitoring Relays

2. Functions

VS: Single-phase Voltage Relay (One-sided operation)

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 VA C : 24 VA C 100-115 VAC: 100 to 115 VAC 200-230 VAC: 200 to 230 VAC

Cat. No. N143-E1-01 Single-phase Voltage Relay K8AB-VS 1

Ordering Information

■ List of Models

Single-phase Voltage Relay Measuring voltage

(See note.)

6 to 60 mV AC/DC, 10 to 100 mV AC/DC, 30 to 300 mV AC/DC

1 to 10 V AC/DC, 3 to 30 V AC/DC, 15 to 150 V AC/DC

20 to 200 V AC/DC, 30 to 300 V AC/DC, 60 to 600 V AC/DC

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.

Supply voltage Model

24 VDC K8AB-VS1 24 VDC

24 VAC K8AB-VS1 24 VAC

100-115 VAC K8AB-VS1 100-115 VAC

200-230 VAC K8AB-VS1 200-230 VAC

24 VDC K8AB-VS2 24 VDC

24 VAC K8AB-VS2 24 VAC

100-115 VAC K8AB-VS2 100-115 VAC

200-230 VAC K8AB-VS2 200-230 VAC

24 VDC K8AB-VS3 24 VDC

24 VAC K8AB-VS3 24 VAC

100-115 VAC K8AB-VS3 100-115 VAC

200-230 VAC K8AB-VS3 200-230 VAC

Ratings and Specifications

■ Ratings

Operating power Non-isolated power supply 24 VDC (1 W)

Isolated power supply 24 VAC (4 VA), 100 to 115 VAC (4 VA), 200 to 230 VAC (5 VA)

Operate (SV) Operating value setting

range

Operating value 100% operation at set value

Reset (HYS.) Hysteresis 5% to 50% of operating value

Resetting method Manual reset/automatic reset (switchable)

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

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-VS1: 9 k

Indicators LED Power (PWR): Green LED, Relay output (RY): Yellow LED, Alarm output (ALM): Red LED

Output relays One SPDT relay (6 A at 250 VAC, resistive load)

10% to 100% of maximum rated input value

Manual reset: Turn OFF operating power for 1 s or longer.

is the shortest at this point.)

K8AB-VS2: 100 k K8AB-VS3: 1 M

±0.5 s (Value when input rapidly changes from 0% to 100%. The operating time

Ω min.

2 Single-phase Voltage Relay K8AB-VS Cat. No. N143-E1-01

■ Specifications

Ambient operating temperature −20 to 60°C (with no condensation or icing)

Storage temperature

Ambient operating humidity 25% to 85%

Storage humidity 25% to 85%

Altitude 2,000 m max.

Operating voltage range 85% to 110% of rated operating voltage

Rated power supply frequency 50/60 Hz ±5 Hz (AC power supply)

Output relays Resistive load 6 A at 250 VAC (cos

Inductive load 1 A at 250 VAC (cos

Minimum load 10 mA at 5 VDC

Maximum contact voltage 250 VAC

Maximum contact current 6 A AC

Maximum switching capacity 1,500 VA

Mechanical life 10,000,000 operations

Electrical life Make: 50,000 times, Break: 30,000 times

Terminal screw tightening torque 1.2 N·m

Crimp terminals

Insulation resistance 20 M

Degree of protection Terminal section: IP20, Rear case: IP40

Case color Munsell 5Y8/1 (ivory)

Case material ABS resin (self-extinguishing resin) UL94-V0

Weight 200 g

Mounting Mounted to DIN Track or via M4 screws

Dimensions 22.5 (W) x 90 (H) x 100 (D) mm

Installation environment Overvoltage Category III, Pollution Degree 2

Application standards EN60255-5/-6

Safety standards EN60664-1

EMC EMI: EN61326 Industrial applications

−40 to 70°C (with no condensation or icing)

6 A at 30 VDC (L/R = 0 ms)

1 A at 30 VDC (L/R = 7 ms)

Two solid wires of 2.5 mm tightened together

Ω (at 500 V) between charged terminals and exposed uncharged parts

20 M

Ω (at 500 V) between any charged terminals (i.e., between input, output, and power

supply terminals)

Electromagnetic interference wave

CISPR11 Group 1, Class A: CISPR16-1/-2

Terminal interference wave voltage

CISPR11 Group 1, Class A: CISPR16-1/-2 EMS: EN61326 Industrial applications Electrostatic discharge EN61000-4-2: 8 kV (in air) Radiating radio-frequency electromagnetic field EN61000-4-3:

10 V/m 1 kHz sine wave amplitude modulation (80 MHz to 1 GHz) Burst EN61000-4-4: 1 kV (I/O signal line), 2 kV (power line) Surge EN61000-4-5: 1 kV with line (power line),

Conducted RF EN61000-4-6: 3 V (0.15 to 80 MHz) Power frequency magnetic field immunity EN61000-4-8: 30 A/m Voltage dip/short interruptions EN61000-4-11: 0.5 cycle, 0.180° each, polarity 100% (rated voltage)

φ = 1)

φ = 0.4)

, two crimp terminals of 1.5 mm2 with insulation sleeves, can be

2 kV with ground (power line)

Cat. No. N143-E1-01 Single-phase Voltage Relay K8AB-VS 3

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