K8AB-PW2

Three-phase Voltage Relay K8AB-PW Ideal for monitoring 3-phase power supplies for industrial facilities and equipment. • Monitor overvoltages and undervoltages for three-phase 3-wire or 4-wire power supplies. DIP switch setting for 3-phase 3-wire or 3-phase 4-wire power supply. • Two SPDT output relays, 6 A at 250 VAC (resistive load). Separate outputs possible for overvoltages and undervoltages. • World-wide power specifications supported by one Unit (switchable using DIP switch). • Relay status can be monitored using LED indicator. Model Number Structure ■ Model Number Legend K8AB-@@ 1 2 3 1. Basic Model K8AB: Measuring and Monitoring Relays 2. Functions PW: Three-phase Voltage Relay (Simultaneous upper and lower monitoring) 3. Rated Input Voltage 1: 115, 127, 133, 138, 200, 220, 230, 240 VAC 2: 220, 230, 240, 277, 380, 400, 415, 480 VAC Single K8AB Monitors 3-phase Power Supply with 3 or 4 Wires Monitoring Relays can be used to monitor 3-phase power supplies with 3 or 4 wires simply by changing DIP switch settings. Phase to phase voltage (3 wires) L1 L2 L3 Phase to neutral voltage (4 wires) L1 L2 L3 N 230VAC 400VAC 230VAC 400VAC 400VAC 230VAC A Single K8AB Can Monitor a 3-phase Power Supply Anywhere in the World Reduces Maintenance Parts Inventory SW3 SW4 K8AB-P@1 K8AB-P@2 Cat. No. N148-E1-02 SW2 SW2 ON OFF ON OFF P-N P-P P-N P-P ON ON 138V 240V 277V 480V ON OFF 133V 230V 240V 415V Three-phase Voltage Relay OFF ON 127V 220V 230V 400V OFF OFF 115V 200V 220V 380V K8AB-PW 1 Ordering Information ■ List of Models Three-phase Voltage Relay Rated input (See note 2.) 3-phase 3-wire mode 200, 220, 230, 240 VAC 3-phase 4-wire mode 115, 127, 133, 138 VAC 3-phase 3-wire mode 380, 400, 415, 480 VAC 3-phase 4-wire mode 220, 230, 240, 277 VAC Model K8AB-PW1 K8AB-PW2 Note: 1. Three-phase, three-wire or four-wire and the input range are switched using a DIP switch. 2. The power supply voltage is the same as the rated input voltage. 2 Three-phase Voltage Relay K8AB-PW Cat. No. N148-E1-02 Ratings and Specifications ■ Ratings Rated input voltage K8AB-PW1 Three-phase, three-wire Mode: 200, 220, 230 and 240 VAC Three-phase, four-wire Mode: 115, 127, 133 and 138 VAC K8AB-PW2 Three-phase, three-wire Mode: 380, 400, 415 and 480 VAC Three-phase, four-wire Mode: 220, 230, 240 and 277 VAC Input load K8AB-PW1: 25 VA max. K8AB-PW2: 45 VA max. Operating value setting range (OVER, UNDER) Overvoltage −30% to 25% of rated input voltage Undervoltage −30% to 25% of rated input voltage Note: The rated input voltage can be switched using the DIP switch. Operating value 100% operation at set value Reset value 5% of operating value (fixed) Reset method Automatic reset Operating time setting range (T) Overvoltage and undervoltage: 0.1 to 30 s Startup lock time (LOCK) 1 s or 5 s (Switched using DIP switch.) Indicators Power (PWR): Green, Relay output (RY): Yellow, OVER/UNDER: Red Output relays Two SPDT relays (NC operation) Output relay ratings Rated load Resistive load 6 A at 250 VAC (cosφ = 1) 6 A at 30 VDC (L/R = 0 ms) Inductive load 1 A at 250 VAC (cosφ = 0.4) 1 A at 30 VDC (L/R = 7 ms) Maximum contact voltage: 250 VAC Maximum contact current: 6 A AC Maximum switching capacity: 1,500 VA Minimum load: 10 mA at 5 VDC Mechanical life: 10,000,000 operations Electrical life: Make: 50,000 times, Break: 30,000 times Ambient operating temperature −20 to 60°C (with no condensation or icing) Storage temperature −40 to 70°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 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 Munsell 5Y8/1 Case material ABS resin (self-extinguishing resin) UL94-V0 Weight Approx. 130 g Mounting Mounted to DIN Track or via M4 screws (tightening torque: 1.2 N·m) Dimensions 22.5 (W) × 90 (H) × 100 (D) mm Cat. No. N148-E1-02 Three-phase Voltage Relay K8AB-PW 3 ■ Specifications Input frequency range 45 to 65 Hz Overload capacity Continuous input: 115% of maximum input, 10 s max.: 125% of maximum input Setting error Operating value Set value ±10% of rated input voltage Operating time Repeat error Startup lock time Set value ±0.5 s Operating value Operating value ±2% Error calculation: Error = ((Maximum operating value − Minimum operating value (over 10 operations))/2)/ Average value × 100% Reset value (See note.) Overvoltage: Operating value x 95% ±2% Undervoltage: Operating value x 105% ±2% Error calculation: Error = ((Maximum reset value − Minimum reset value (over 10 resets))/2)/ Average value × 100% Operating time Operating time repeat error: ±50 ms Overvoltage: Measured when input suddenly changes from 70% to 120% of setting. Undervoltage: Measured when input suddenly changes from 120% to 70% of setting. The input voltage, however, must be between 70% and 125% of rating. Startup lock time Startup lock time repeat error: ±0.5 s (The operating time when the operating time is set to the minimum value and the power supply suddenly changes from 0% to 100%.) Temperature influence Operating value Drift based on measured value at standard temperature: −20°C to standard temperature: ±1,000 ppm/°C max. Standard temperature to 60°C: ±1,000 ppm/°C max. (Humidity: 25% to 80%) Operating time Fluctuation based on measured value at standard temperature: −20°C to standard temperature: ±10% max. Standard temperature to 60°C: ±10% max. (Humidity: 25% to 80%) Humidity influence Operating value Based on ambient humidity of 65% 25% to 80%: ±5% max. Operating time Based on ambient room humidity 25% to 80%: ±10% max. Influence of input frequency At 45 to 65 Hz Operating value ±5% Operating time ±10% Note: The error in the operating value and operating time under standard conditions. Applicable standards Conforming standards EN60255-5 and EN60255-6 Installation environment (Pollution Degree 2, Overvoltage Category III) EMC EN61326 Safety standards UL508 Insulation resistance 20 MΩ min. Between external terminals and case Between input terminals and output 1 terminals Between input terminals and output 2 terminals Between output 1 terminals and output 2 terminals Dielectric strength 2,000 VAC for one minute Between external terminals and case Between input terminals and output 1 terminals Between input terminals and output 2 terminals Between output 1 terminals and output 2 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, acceleration 50 m/s2 10 sweeps of 5 min each in X, Y, and Z directions Shock resistance 100 m/s2, 3 times each in 6 directions along three axes (up/down, left/right, forward/backward) Degree of protection Terminal section: Finger protection Note: The reset value is valid only for automatic resets. 4 Three-phase Voltage Relay K8AB-PW Cat. No. N148-E1-02 Connections ■ Wiring Diagram Overvoltage and Undervoltage Operation Diagram Overvoltage setting value N L1 L2 L3 Hysteresis: Fixed at 5% L1 Input L2 L3 Hysteresis: Fixed at 5% Voltage input Undervoltage setting value Flashing Overvoltage alarm indicator Flashing Undervoltage alarm indicator Lit T L2 T: Operating time (0.1 to 30 s) L3 Overvoltage relay 14 Signal output 12 Undervoltage relay T L1 Lit T: Operating time (0.1 to 30 s) T1: Power ON lock (1 s or 5 s) N 11 Overvoltage alarm T1 Note: 1. K8AB-PW output relay is normally operative. 2. The power ON lock function prevents unnecessary alarms from being generated during the unstable period when the power is first turned ON. There is no relay output during timer operation. 3. L1 and L2 use the same power supply and will not operate due to an undervoltage if they drop below the rated input of 60%. Cat. No. N148-E1-02 24 Signal output 22 21 Undervoltage alarm Load Three-phase Voltage Relay K8AB-PW 5 Nomenclature ■ Front Indicators Item Terminal block (See notes 1 and 2.) Overvoltage knob (OVER) Power indicator Relay status indicator Alarm indicator Undervoltage knob (UNDER) Operating time knob (T) Meaning Power indicator (PWR: Green) Lit when power is being supplied (see note). Relay status indicator (RY: Yellow) Lit when relay is operating (normally lit). Alarm indicator (ALM: Red) Lit when there is an overvoltage. The indicator flashes to indicate the error status after the overvoltage has exceeded the threshold value while the operating time is being clocked. Overvoltage: Red Undervoltage: Lit when there is an undervoltage or phase loss. Red The indicator flashes to indicate the error status after the undervoltage has exceeded the threshold value while the operating time is being clocked. Note: The input across L1 and L2 is used for the internal power supply. Therefore, the power indicator will not be lit if there is no input across L1 and L2. Terminal block (See notes 1 and 2.) Setting Knobs Item Usage Overvoltage knob (OVER) Can be set between −30% and 25% of the rated input. Undervoltage knob (UNDER) Can be set between −30% and 25% of the rated input. 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 insulating sleeves 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 Recommended: 0.49 N·m Maximum: 0.54 N·m 6 Three-phase Voltage Relay K8AB-PW Cat. No. N148-E1-02 ■ Operation and Setting Methods Connections 1. Input Connect to L1, L2, and L3 (for three-phase three-wire mode) or L1, L2, L3, and N (for three-phase fourwire mode), depending on the mode selected using pin 2 on the DIP switch. The Unit will not operate correctly if the DIP switch setting and the wiring do not agree. Make sure the phase sequence is wired correctly. The Unit will not operate normally if the phase sequence is incorrect. 2. Outputs Terminals 11, 12, and 14 are the output terminals for overvoltage (SPDT). Terminals 21, 22, and 24 are the output terminals for undervoltage (SPDT). N L1 L2 L3 Voltage input L1 L2 N L3 14 Signal output 12 24 Signal output 22 11 Overvoltage alarm 21 Undervoltage alarm Load DIP Switch Settings The Startup lock time, number of wires, and rated voltage are set using the DIP switch located on the bottom of the Unit. DIP Switch Functions ON K8AB-PW1 SWITCH OFF SW1 SW2 SW3 SW4 DIP switch ON ● ↑ 4 3 2 1 ON Power ON lock time 5 s OFF ❍ ↓ OFF --- --- --- ● 1s --- --- --- ❍ Number of wires Rated voltage Three-phase, four-wire --- --- ● --- Three-phase, three-wire --- --- ❍ --- Three-phase, Three-phase, three-wire four-wire 240 V 138 V ● ● --- --- 230 V 133 V ● ❍ --- --- 220 V 127 V ❍ ● --- --- 200 V 115 V ❍ ❍ --- --- 3 2 1 Power ON lock time 5 s OFF ❍ ↓ OFF --- --- --- ● 1s --- --- --- ❍ Note: All pins are set to OFF at the factory. K8AB-PW2 SWITCH Number of wires Rated voltage ON ● ↑ 4 ON Three-phase, four-wire --- --- ● --- Three-phase, three-wire --- --- ❍ --- Three-phase, Three-phase, three-wire four-wire 480 V 277 V ● ● --- --- 415 V 240 V ● ❍ --- --- 400 V 230 V ❍ ● --- --- 380 V 220 V ❍ ❍ --- --- Note: All pins are set to OFF at the factory. Cat. No. N148-E1-02 Three-phase Voltage Relay K8AB-PW 7 Setting Method 1. Overvoltage The overvoltage knob (OVER) is used to set the overvoltage. The overvoltage can be set to between −30% and 25% of the rated input voltage. 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 rated input depends on the model and DIP switch setting. Example: K8AB-PW1 with Pin 2 Turned OFF (Three-phase, Three-wire Mode) and Pins 3 and 4 Turned OFF (Rated Voltage of 200 V) The rated input voltage is 200 VAC and the setting range is 140 to 250 V. 2. Undervoltage Undervoltage is set using the undervoltage knob (UNDER). The undervoltage can be set to between −30% and 25% of the rated input. 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 rated input depends on the model and DIP switch setting. Example: K8AB-PW1 with Pin 2 Turned OFF (Three-phase, Three-wire Mode) and Pins 3 and 4 Turned OFF (Rated Voltage of 200 V) The rated input voltage is 200 VAC and the setting range is 140 to 250 V. 3. 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. 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 current. If the input exceeds (or drops lower than) the voltage setting, the alarm indicator will start flashing for the set period and then stay lit. Dimensions (Unit: mm) Three-phase Voltage Relays 22.5 5 100 K8AB-PW1 K8AB-PW2 90 72 8 Three-phase Voltage Relay K8AB-PW 5 Cat. No. N148-E1-02 Safety Precautions ■ Precautions for Safe Use Make sure to follow the instructions below to ensure safety. 1. Do not use or keep this product in the following environments. • Outdoors, or places subject to direct sunlight or wearing weather. • Places where dust, iron powder, or corrosive gases (in particular, sulfuric or ammonia gas) exist. • Places subject to static electricity or inductive noise. • Places where water or oil come in contact with the product. 2. Make sure to install this product in the correct direction. 3. There is a remote risk of electric shock. Do not touch terminals while electricity is being supplied. 4. Make sure to thoroughly understand all instructions in the Instructions Manual before handling this product. 5. Make sure to confirm terminal makings and polarity for correct wiring. 6. Tighten terminal screws firmly using the following torque. Recommended tightening torque: 0.49 N·m Maximum tightening torque: 0.54 N·m max. 7. Operating ambient temperature and humidity for this product must be within the indicated rating when using this product. 8. There is a remote risk of explosion. Do not use this product where flammable or explosive gas exists. 9. Make sure that no weight rests on the product after installation. 10.To enable an operator to turn off this product easily, install switches or circuit breakers that conform to relevant requirements of IEC60947-1 and IEC60947-3, and label them appropriately. ■ Precautions for Correct Use For Proper Use 1. Do not use the product in the following locations. • Places subject to radiant heat from heat generating devices. • Places subject to vibrations or physical shocks. 2. Make sure to use setting values appropriate for the controlled object. Failure to do so can cause unintended operation, and may result in accident or corruption of the product. 3. Do not use thinner or similar solvent for cleaning. Use commercial alcohol. 4. When discarding, properly dispose of the product as industrial waste. 5. Only use this product within a board whose structure allows no possibility for fire to escape. About Installation 1. When wiring, use only recommended crimp terminals. 2. Do not block areas around the product for proper dissipation of heat. (If you do not secure space for heat dissipation, life cycle of the product will be compromised.) 3. To avoid electrical shocks, make sure that power is not supplied to the product while wiring. 4. To avoid electrical shocks, make sure that power is not supplied to the product when performing DIP switch settings. Noise Countermeasures 1. Do not install the product near devices generating strong high frequency waves or surges. 2. When using a noise filter, check the voltage and current and install it as close to the product as possible. 3. In order to prevent inductive noise, wire the lines connected to the product separately from power lines carrying high voltages or currents. Do not wire in parallel with or on the same cable as power lines. Other measures for reducing noise include running lines along separate ducts and using shield lines. To avoid faulty operations, malfunctions, or failure, observe the following operating instructions. 1. When turning on the power, make sure to realize rated voltage within 1 second from the time of first supply of electricity. 2. Make sure to use power supply for operations, inputs, and transformer with the appropriate capacity and rated burden. 3. Maintenance and handling of this product may only be performed by qualified personnel. 4. Distortion ratio of input wave forms must be 30% or less. Use of this product with circuits that have large distortion in wave forms may result in unwanted operations. 5. Using this product for thyristor controls or inverters will result in errors. 6. When setting the volume, adjust the control from the minimum side to the maximum side. Cat. No. N148-E1-02 Three-phase Voltage Relay K8AB-PW 9 Questions and Answers Q Q Checking Operation How to Measure the Operating Time Overvoltage Gradually increase the input from 80% of the setting. The input value will equal the operating value when the input exceeds the setting and the alarm indicator starts flashing. Operation can be checked by the relay output that will start after the operating time has passed. Undervoltage Gradually decrease the input from 120% of the setting and check the operation using the same method as for overvoltage. Example: For monitoring mode set to three-phase three-wire monitoring, a rated voltage of 200 V, and an operating time of 5 s. 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. Operating Time Adjust the slide resistor so that the voltage applied to the K8AB terminals is 120% of the overvoltage set value or 80% of the undervoltage set value when the auxiliary relay operates in a test circuit. Close the switch and use the cycle counter to measure the operating time. Connection Diagram Note: K8AB-PW@ output relays are normally operative. Input voltage V1 L2 L1 R1 Lit Flashing Alarm indicator L1 3φ, 200 VAC Set value X/b X 5s X/a V2 V3 L3 R2 L2 R1: Slide resistor 200 Ω 200 W R2: 100 Ω 400 W Relay output L3 Connection Diagram Overvoltage L1 ± V1 3φ, 200 VAC L2 C 200 V Cycle counter V2 V3 L1 L3 0 to 150 V L2 Undervoltage L3 Q Operating Adjustment Knobs Three-phase variable autotransformer Use a screwdriver to turn the knobs. There is a stopper to prevent the knob from turning any further once it has been turned completely to the left or right. Do not force the knob past these limits. Q Overvoltage Detection When Only One Phase Exceeds the Overvoltage Threshold The K8AB monitors each of the three-phase voltages. This means an overvoltage is detected if even only one phase exceeds the threshold value. The same applies to undervoltages. 10 Three-phase Voltage Relay K8AB-PW Cat. No. N148-E1-02 Cat. No. N148-E1-02 Three-phase Voltage Relay K8AB-PW 11 Warranty and Application Considerations 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. Warranty and Limitations of Liability WARRANTY OMRON's exclusive warranty is that the products are free from defects in materials and workmanship for a period of one year (or other period if specified) from date of sale by OMRON. OMRON MAKES NO WARRANTY OR REPRESENTATION, EXPRESS OR IMPLIED, REGARDING NON-INFRINGEMENT, MERCHANTABILITY, OR FITNESS FOR PARTICULAR PURPOSE OF THE PRODUCTS. ANY BUYER OR USER ACKNOWLEDGES THAT THE BUYER OR USER ALONE HAS DETERMINED THAT THE PRODUCTS WILL SUITABLY MEET THE REQUIREMENTS OF THEIR INTENDED USE. OMRON DISCLAIMS ALL OTHER WARRANTIES, EXPRESS OR IMPLIED. LIMITATIONS OF LIABILITY OMRON SHALL NOT BE RESPONSIBLE FOR SPECIAL, INDIRECT, OR CONSEQUENTIAL DAMAGES, LOSS OF PROFITS, OR COMMERCIAL LOSS IN ANY WAY CONNECTED WITH THE PRODUCTS, WHETHER SUCH CLAIM IS BASED ON CONTRACT, WARRANTY, NEGLIGENCE, OR STRICT LIABILITY. In no event shall the responsibility of OMRON for any act exceed the individual price of the product on which liability is asserted. IN NO EVENT SHALL OMRON BE RESPONSIBLE FOR WARRANTY, REPAIR, OR OTHER CLAIMS REGARDING THE PRODUCTS UNLESS OMRON'S ANALYSIS CONFIRMS THAT THE PRODUCTS WERE PROPERLY HANDLED, STORED, INSTALLED, AND MAINTAINED AND NOT SUBJECT TO CONTAMINATION, ABUSE, MISUSE, OR INAPPROPRIATE MODIFICATION OR REPAIR. Application Considerations SUITABILITY FOR USE OMRON shall not be responsible for conformity with any standards, codes, or regulations that apply to the combination of products in the customer's application or use of the products. Take all necessary steps to determine the suitability of the product for the systems, machines, and equipment with which it will be used. Know and observe all prohibitions of use applicable to this product. NEVER USE THE PRODUCTS FOR AN APPLICATION INVOLVING SERIOUS RISK TO LIFE OR PROPERTY WITHOUT ENSURING THAT THE SYSTEM AS A WHOLE HAS BEEN DESIGNED TO ADDRESS THE RISKS, AND THAT THE OMRON PRODUCTS ARE PROPERLY RATED AND INSTALLED FOR THE INTENDED USE WITHIN THE OVERALL EQUIPMENT OR SYSTEM. Disclaimers PERFORMANCE DATA Performance data given in this catalog 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 users must correlate it to actual application requirements. Actual performance is subject to the OMRON Warranty and Limitations of Liability. CHANGE IN SPECIFICATIONS Product specifications and accessories may be changed at any time based on improvements and other reasons. Consult with your OMRON representative at any time to confirm actual specifications of purchased product. DIMENSIONS AND WEIGHTS Dimensions and weights are nominal and are not to be used for manufacturing purposes, even when tolerances are shown. ALL DIMENSIONS SHOWN ARE IN MILLIMETERS. To convert millimeters into inches, multiply by 0.03937. To convert grams into ounces, multiply by 0.03527. OMRON Corporation Industrial Automation Company Authorized Distributor: Tokyo, JAPAN Contact: www.ia.omron.com Regional Headquarters OMRON EUROPE B.V. Wegalaan 67-69-2132 JD Hoofddorp The Netherlands Tel: (31)2356-81-300/Fax: (31)2356-81-388 OMRON ELECTRONICS LLC One Commerce Drive Schaumburg, IL 60173-5302 U.S.A. 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 2005 All Rights Reserved. In the interest of product improvement, specifications are subject to change without notice. Printed in Japan CSM_1_4_0813 Cat. No. N148-E1-02 0706-0.7M (0505) (C)