K8AK-VS224VAC/DC

Single-phase Voltage Relay K8AK-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, 5 A at 250 VAC (resistive load). • Output relay can be switched between normally open and normally closed. • 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. • Inputs are isolated from the power supply. Refer to Safety Precautions on page 9. Refer to page 8 for commonly asked questions. For the most recent information on models that have been certified for safety standards, refer to your OMRON website. Ordering Information List of Models Setting range Power supply voltage Model 1 to 10 V AC/DC 3 to 30 V AC/DC 15 to 150 V AC/DC 24 VAC/DC K8AK-VS2 24 VAC/DC 100 to 240 VAC K8AK-VS2 100-240 VAC 20 to 200 V AC/DC 30 to 300 V AC/DC 60 to 600 V AC/DC 24 VAC/DC K8AK-VS3 24 VAC/DC 100 to 240 VAC K8AK-VS3 100-240 VAC Ratings and Specifications Input Range Model K8AK-VS2 K8AK-VS3 Range* Connection terminal 0 to 10 V AC/DC V1-COM 0 to 30 V AC/DC V2-COM 0 to 150 V AC/DC V3-COM 0 to 200 V AC/DC V1-COM 0 to 300 V AC/DC V2-COM 0 to 600 V AC/DC V3-COM Setting range 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 Input impedance Overload capacity Approx. 120 kΩ Approx. 320 kΩ Approx. 1.6 MΩ Approx. 1.2 MΩ Approx. 1.7 MΩ Continuous input at 115% of maximum input 10 s at 125% (up to 600 VAC) Approx. 3.1 MΩ * The range is selected using connected terminals. 1 K8AK-VS Ratings Power supply voltage 2 Isolated power supply 24 VAC/DC 100 to 240 VAC Power consumption 24 VAC/DC: 2.0 VA/1.1 W max. 100 to 240 VAC: 4.6 VA max. Operating value setting range (SV) 10% to 100% of maximum setting range K8AK-VS2: 1 to 10 V AC/DC 3 to 30 V AC/DC 15 to 150 V AC/DC K8AK-VS3: 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 setting range (HYS.) 5% to 50% of operating value Reset method Manual reset/automatic reset (switchable) 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 (ALM): Red Input impedance Refer to Input Range on previous page. Output relays One SPDT relay (NO/NC switched using DIP switch.) Output relay ratings Rated load Resistive load 5 A at 250 VAC 5 A at 30 VDC 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 60°C (with no condensation or icing) Storage temperature −25 to 65°C (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 N·m Terminal wiring method Recommended wire Solid wire: 2.5 mm2 Twisted wires: AWG16, AWG18 Note: 1. Ferrules with insulating sleeves must be used with twisted wires. 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 (W×H×D) K8AK-VS Specifications Allowable operating voltage range 85% to 110% of rated power supply voltage Allowable operating frequency range 50/60 Hz ±5 Hz Input frequency 40 to 500 Hz Overload capacity Continuous input at 115% of maximum input, 10 s at 125% (up to 600 VAC). Repeat accuracy Operating value ±0.5% full scale (at 25°C and 65% humidity, rated power supply voltage, DC or 50/60 Hz sine wave input) Operating time ±50 ms (at 25°C and 65% humidity, rated power supply voltage) Conforming standards EN 60947-5-1 Installation environment (pollution level 2, installation category III) Applicable stanEMC dards Safety standards EN 60947-5-1 UL 508 (Recognition), Korean Radio Waves Act (Act 10564), CSA: C22.2 No.14, CCC: GB/T 14048.5 Insulation resistance 20 MΩ min. Between external terminals and case Between power supply terminals and input terminals Between power supply terminals and output terminals Between input terminals and output terminals Dielectric strength 2,000 VAC for one minute Between external terminals and case Between power supply terminals and input terminals Between power supply terminals and output terminals Between input terminals and output terminals Noise immunity 1,500 V power supply terminal common/normal mode Square-wave noise of ±1 μs/100 ns pulse width with 1-ns rise time Vibration resistance Frequency: 10 to 55 Hz, 0.35-mm single amplitude 10 sweeps of 5 min each in X,Y, and Z directions Shock resistance 100 m/s2, 3 times each in 6 directions along 3 axes Degree of protection Terminals: IP20 3 K8AK-VS Connections Terminal Diagram K8AK-VS2 100-240VAC A B Control Output A Voltage Input Relay output 250 VAC, 5 A (resistive load) 30 VDC, 5 A (resistive load) VS3 VS2 V1 V2 V2 V1 V3 V1 V3 V2 V3 600 V max. 150 V max. B Power Supply Voltage 100 to 240 VAC A1 300 V max. 30 V max. 200 V max. 10 V max. 24 VAC/DC A2 C C A2 A1 (No polarity) A1 A2 C 11 12 14 Relay Output Common 11 Note: 1. 2. 3. 4. 12 14 There is no polarity for the DC power supply input. For the voltage input, you can input only from the C terminal and one other terminal. Refer to Setting Ranges and Wiring Connections for information on the V1, V2, and V3 voltage input terminals. Use the recommended ferrules if you use twisted wires. Wiring Example Single-phase power supply Load V1 V2 V3 Power supply AC/DC Power A2 supply voltage A1 A1 A2 C 11 12 14 Timing Charts ●Overvoltage Operation Diagram (Output Relay Drive Method: Normally Closed) ●Undervoltage Operation Diagram (Output Relay Drive Method: Normally Open) DIP switch setting: SW3 ON. DIP switch setting: SW3 OFF. Power supply voltage Hysteresis (−5% to 50% of operating value) Power supply voltage Input Set value Input Set value Flashing Alarm indicator Lit Lit Relay 11-14 Relay 11-14 Relay 11-12 Relay 11-12 Delay: 250 ms (reference value) Delay: 250 ms (reference value) t: Operating time (0.1 to 30 s) t t1: Power ON lock (1 or 5 s) t: Operating time (0.1 to 30 s) t t1: Power ON lock (1 or 5 s) t1 Note: The power ON lock prevents unnecessary alarms from being generated during the instable period when the power is first turned on. There is no relay output during timer operation. 4 Hysteresis (5% to 50% of operating value) Flashing Alarm indicator t1 Note: The power ON lock prevents unnecessary alarms from being generated during the instable period when the power is first turned on. There is no relay output during timer operation. K8AK-VS Nomenclature ●Indicators Front Item Meaning Power indicator (PWR: Green) Terminal block (See notes 1 and 2.) Relay status indicator Lit when relay is operating (RY: Yellow) Voltage knob (SV) Power indicator Alarm indicator (ALM: Red) Hysteresis knob (HYS.) Relay status indicator Alarm indicator Lit when power is being supplied. Operating time knob (T) Lit when there is an overvoltage or undervoltage. The indicator flashes to indicate the error status after the input has exceeded the set value while the operating time is being clocked. ●Setting Knobs Item Terminal block (See notes 1 and 2.) Usage Voltage knob (SV) Used to set the voltage to 10% to 100% of maximum setting range. Hysteresis knob (HYS.) Used to set the rest value to 5% to 50% of the operating value. Operating time knob (T) Used to set the operating time to 0.1 to 30 s. Note: 1. Use either a solid wire of 2.5 mm2 maximum or a ferrule with insulating sleeve for the terminal connection. The length of the exposed current-carrying part inserted into the terminal must be 8 mm or less to maintain dielectric strength after connection. For 2.5 mm2 or smaller solid wires 8 mm max. For ferrules with an insulation sleeve. 8 mm max. Recommended ferrules Phoenix Contact • Al 1,5-8BK (for AWG16) • Al 1-8RD (for AWG18) • Al 0,75-8GY (for AWG18) 2. Tightening torque: 0.49 to 0.59 N·m 3. The terminal screw is a Pozidriv screw. 5 K8AK-VS Operation Methods Setting Ranges and Wiring Connections Model K8AK-VS2 K8AK-VS3 Setting range Wiring connection 1 to 10 V AC/DC V1-COM 3 to 30 V AC/DC V2-COM 15 to 150 V AC/DC V3-COM 20 to 200 V AC/DC V1-COM 30 to 300 V AC/DC V2-COM 60 to 600 V AC/DC V3-COM Connections ●Input Single-phase power Connect the input between terminals V1-COM, V2-COM, or V3-COM, depending on the input voltage. Malfunctions may occur if the input is connected to unused terminals and the Unit will not operate correctly. ●Power Supply A1 Power supply voltage Connect the power supply to terminals A1 and A2. A2 ●Outputs V1 SPDT relays are output to terminals 11, 12, and 14. Note: Use the recommended ferrules if using twisted wires. Voltage input V2 C (COM) V3 14 Signal output 12 Relay signal output 11 Load DIP Switch Settings The power ON lock time, resetting method, relay drive method, and operating mode are set using the DIP switch located on the bottom of the Unit. ●DIP Switch Functions OFF ● ↑ OFF 1 2 3 4 ● --- --- --- OFF Pin ON ❍ ↓ ON SW4 SW3 SW2 SW1 DIP switch pins ON Power ON lock time 1s 5s ❍ --- --- --- Resetting method Manual reset --- ● --- --- Automatic reset --- ❍ --- --- Relay drive method Normally open --- --- ● --- Normally closed --- --- ❍ --- Operating mode Overvoltage --- --- --- ● Undervoltage --- --- --- ❍ Note: All pins are set to OFF at the factory. 6 K8AK-VS Setting Method ●Setting Voltage The voltage knob (SV) is used to set the voltage. The voltage can be set to 10% to 100% of the maximum setting range. Turn the knob while there is an input to the input terminals until the alarm indicator flashes (when the set value and the input have reached the same level.) Use this as a guide to set the voltage. The maximum setting range will differ depending on the model and the input terminal. Example: K8AK-VS3 Using Input Terminal V3-COM The maximum setting range will be 600 VAC/VDC and the setting range will be 60 to 600 V. ●Hysteresis Hysteresis is set using the hysteresis knob (HYS.) The setting range is 5 to 50% of the operating value. Example: Maximum Setting of 600 VAC/VDC, Voltage Set Value (SV) of 50%, and Overvoltage Operation Operation will be at 300 V and resetting at 270 V when the hysteresis (HYS.) is set to 10%. ●Operating Time The operating time is set using the operating time knob (T). The operating time can be set to between 0.1 and 30 s. If the input voltage exceeds (or drops lower than) the voltage set value, the alarm indicator will start flashing for the set period and then stay lit. Dimensions (Unit: mm) Single-phase Voltage Relays K8AK-VS2 K8AK-VS3 22.5 100 90 72 5 Optional Parts for DIN Track Mounting ●DIN Tracks PFP-100N PFP-50N 7.3±0.15 4.5 35±0.3 15 25 10 25 25 1,000 (500)* 10 25 15 (5)* 27±0.15 1 *Dimensions in parentheses are for the PFP-50N. 7 K8AK-VS Questions and Answers Q Q Checking Operation Overvoltages Gradually increase the input from 80% of the set value. The input will equal the operating value when the input exceeds the set value and the alarm indicator starts flashing. Operation can be checked by the relay outputs that will start after the operating time has passed. Undervoltage Gradually decrease the input from 120% of the set value and check the operation using the same method as for overvoltage. Example: Overvoltage Operating Mode and an Operating Time of 5 s Note: K8AK-VS@ output relays are normally operative. Set value Input voltage Flashing Alarm indicator Lit 5s Relay output Connection Diagram 200 VAC V 0 to 300 V Variable autotransformer ± C 200 V Cycle counter 8 Input terminals Power supply A1 A2 How to Measure the Operating Time Overvoltage Change the input suddenly from 0% to 120% of the set value and measure the time until the Unit operates. Undervoltage Change the input suddenly from 120% to 0% of the set value and measure the time until the Unit operates. K8AK-VS Safety Precautions Be sure to read the precautions for all models in the website at the following URL: http://www.ia.omron.com/. Warning Indications WARNING Indicates a potentially hazardous situation which, if not avoided, will result in minor or moderate injury, or may result in serious injury or death. Additionally there may be significant property damage. CAUTION Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury or in property damage. Precautions for Safe Use Supplementary comments on what to do or avoid doing, to use the product safely. Precautions for Correct Use Supplementary comments on what to do or avoid doing, to prevent failure to operate, malfunction, or undesirable effects on product performance. Meaning of Product Safety Symbols Used to warn of the risk of electric shock under specific conditions. WARNING Electrical shock may occasionally cause serious injury. Confirm that the input voltage is OFF before starting any wiring work and wire all connections correctly. CAUTION Electrical shock may cause minor injury. Do not touch terminals while electricity is being supplied. There is a risk of minor electrical shock, fire, or device failure. Do not allow any pieces of metal, conductors, or cutting chips that occur during the installation process to enter the product. Explosions may cause minor injuries. Do not use the product in locations with inflammable or explosive gases. Used for general prohibitions for which there is no specific symbol. There is a risk of minor electrical shock, fire, or device failure. Do not disassemble, modify, repair, or touch the inside of the product. Used to indicate prohibition when there is a risk of minor injury from electrical shock or other source if the product is disassembled. Loose screws may cause fires. Tighten terminal screws to the specified torque of 0.49 to 0.59 N·m. Used for general mandatory action precautions for which there is no specified symbol. Use of excessive torque may damage the terminal screws. Tighten terminal screws to the specified torque of 0.49 to 0.59 N·m. Use of the product beyond its life may result in contact welding or burning. Make sure to consider the actual operating conditions and use the product within its rated load and electrical life count. The life of the output relay varies significantly with the switching capacity and switching conditions. 9 K8AK-VS Precautions for Safe Use 1. Do not use or store the product in the following locations. • Locations subject to water or oil • Outdoor locations or under direct sunlight • Locations subject to dust or corrosive gases (particularly sulfurizing gases, ammonia, etc.) • Locations subject to rapid temperature changes • Locations prone to icing and dew condensation • Locations subject to excessive vibration or shock • Locations subject to wind and rain • Locations subject to static electricity and noise • Habitats of insects or small animals 2. Use and store the product in a location where the ambient temperature and humidity are within the specified ranges. If applicable, provide forced cooling. 3. Mount the product in the correct direction. 4. Check terminal polarity when wiring and wire all connections correctly. The power supply terminals do not have polarity. 5. Do not wire the input and output terminals incorrectly. 6. Make sure the power supply voltage and loads are within the specifications and ratings for the product. 7. Make sure the crimp terminals for wiring are of the specified size. 8. Do not connect anything to terminals that are not being used. 9. Use a power supply that will reach the rated voltage within 1 second after the power is turned ON. 10.Keep wiring separate from high voltages and power lines that draw large currents. Do not place product wiring in parallel with or in the same path as high-voltage or high-current lines. 11.Do not install the product near equipment that generates high frequencies or surges. 12.The product may cause incoming radio wave interference. Do not use the product near radio wave receivers. 13.Install an external switch or circuit breaker and label it clearly so that the operator can quickly turn OFF the power supply. 14.Make sure the indicators operate correctly. Depending on the application environment, the indicators may deteriorate prematurely and become difficult to see. 15.Do not use the product if it is accidentally dropped. The internal components may be damaged. 16.Be sure you understand the contents of this catalog and handle the product according to the instructions provided. 17.Do not install the product in any way that would place a load on it. 18.When discarding the product, properly dispose of it as industrial waste. 19.When using the product, remember that the power supply terminals carry a high voltage. 20.The product must be handled only by trained electrician. 21.Prior to operation, check the wiring before you supply power to the product. 22.Do not install the product immediately next to heat sources. 23.Perform periodic maintenance. Precautions for Correct Use Observe the following operating methods to prevent failure and malfunction. 1. Use the power supply voltage, input power, and other power supplies and converters with suitable capacities and rated outputs. 2. Use a precision screwdriver or similar tool to adjust the setting knobs. 3. Do not use the product in circuits with waveform distortion. Error will be large due to waveform distortion. 4. Error will be large if the product is used for thyristor or inverter control. 5. To reduce the error in the setting knob, always turn the setting knob from the minimum setting toward the maximum setting. 6. When cleaning the product, do not use thinners or solvents. Use commercial alcohol. Correct Mounting Direction, Mounting, and Removing • Mounting to DIN Track 1. Attach the product to the DIN Track with the tab at the top and the hooks at the bottom. 2. Push the product onto the Track until the hooks lock into place. A B • Removing from the DIN Track Pull down on the bottom hook with a flat-blade screwdriver and lift up on the product. Applicable DIN Tracks: PFP-100N (100 cm) PFP-50N (50 cm) Adjusting the Setting Knobs • Use a screwdriver to adjust the setting knobs. The knobs have a stopper that prevents them from turning beyond the full right or left position. Do not force a knob beyond these points. Setting knob 10 Terms and Conditions Agreement Read and understand this catalog. Please read and understand this catalog before purchasing the products. Please consult your OMRON representative if you have any questions or comments. Warranties. (a) Exclusive Warranty. Omron’s exclusive warranty is that the Products will be free from defects in materials and workmanship for a period of twelve months from the date of sale by Omron (or such other period expressed in writing by Omron). Omron disclaims all other warranties, express or implied. (b) Limitations. OMRON MAKES NO WARRANTY OR REPRESENTATION, EXPRESS OR IMPLIED, ABOUT NON-INFRINGEMENT, MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OF THE PRODUCTS. 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NEVER USE THE PRODUCT FOR AN APPLICATION INVOLVING SERIOUS RISK TO LIFE OR PROPERTY OR IN LARGE QUANTITIES WITHOUT ENSURING THAT THE SYSTEM AS A WHOLE HAS BEEN DESIGNED TO ADDRESS THE RISKS, AND THAT THE OMRON PRODUCT(S) IS PROPERLY RATED AND INSTALLED FOR THE INTENDED USE WITHIN THE OVERALL EQUIPMENT OR SYSTEM. Programmable Products. Omron Companies shall not be responsible for the user’s programming of a programmable Product, or any consequence thereof. Performance Data. Data presented in Omron Company websites, catalogs and other materials is provided as a guide for the user in determining suitability and does not constitute a warranty. It may represent the result of Omron’s test conditions, and the user must correlate it to actual application requirements. Actual performance is subject to the Omron’s Warranty and Limitations of Liability. Change in Specifications. Product specifications and accessories may be changed at any time based on improvements and other reasons. 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Tel: (1) 847-843-7900/Fax: (1) 847-843-7787 OMRON ASIA PACIFIC PTE. LTD. No. 438A Alexandra Road # 05-05/08 (Lobby 2), Alexandra Technopark, Singapore 119967 Tel: (65) 6835-3011/Fax: (65) 6835-2711 OMRON (CHINA) CO., LTD. Room 2211, Bank of China Tower, 200 Yin Cheng Zhong Road, PuDong New Area, Shanghai, 200120, China Tel: (86) 21-5037-2222/Fax: (86) 21-5037-2200 © OMRON Corporation 2014-2021 All Rights Reserved. In the interest of product improvement, specifications are subject to change without notice. CSM_2_8 Cat. No. N181-E1-02 0513 1021 (0314)