New Product Single-phase Overcurrent/Undercurrent Relay K8DT-AW Detect errors in motors and other equipment through current changes. Monitor for overcurrents and undercurrents simultaneously with one Relay. • Monitor AC or DC currents with one Relay. • Use with commercially available CTs (CT secondary side: 0 to 1 A or 0 to 5 A). • Width of 17.5 mm to reduce space required in panels. • Push-In Plus Terminal that reduce wiring work. The use of cage clamps enables wiring with bare stranded wires. Double-insertion holes for crossover wiring (all terminals). • UL listed for easy shipping to North America. • Models added with transistor outputs for superior contact reliability. Refer to Safety Precautions on page 10. Refer to page 9 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 Single-phase Overcurrent/Undercurrent Relay Setting range Power supply voltage 24 VAC/DC 2 to 20 mA AC/DC 10 to 100 mA AC/DC 50 to 500 mA AC/DC 100 to 240 VAC 24 VAC/DC 0.1 to 1 A AC/DC 0.5 to 5 A AC/DC 100 to 240 VAC 24 VAC/DC 10 to 100 A AC * 20 to 200 A AC * 100 to 240 VAC Output Model Relay: SPDT contact output K8DT-AW1CD Transistor: NPN output K8DT-AW1TD Relay: SPDT contact output K8DT-AW1CA Transistor: NPN output K8DT-AW1TA Relay: SPDT contact output K8DT-AW2CD Transistor: NPN output K8DT-AW2TD Relay: SPDT contact output K8DT-AW2CA Transistor: NPN output K8DT-AW2TA Relay: SPDT contact output K8DT-AW3CD Transistor: NPN output K8DT-AW3TD Relay: SPDT contact output K8DT-AW3CA Transistor: NPN output K8DT-AW3TA * The K8DT-AW3@@ is designed to be used in combination with an OMRON K8AC-CT200L Current Transformer (CT). (Direct input is not possible.) Commercially Available CTs * OMRON CT Appearance Input range Applicable Relay 10 to 100 A AC, 20 to 200 A AC K8DT-AW3 Model K8AC-CT200L Appearance CT current on secondary side Applicable Relay 0 to 1 A AC, 0 to 5 A AC K8DT-AW2 * If you use a commercially available CT, do not exceed the overload capacity of the K8DT-AW2. Options (Order Separately) Front Cover Appearance Model Y92A-D1A 1 K8DT-AW Ratings and Specifications Input Range Model K8DT-AW1@@ Range *1 Connection terminals Setting range 20 mA AC/DC I1-COM 2 to 20 mA AC/DC Approx. 5 Ω 100 mA AC/DC I2-COM 10 to 100 mA AC/DC Approx. 1 Ω 500 mA AC/DC I3-COM 50 to 500 mA AC/DC Approx. 0.2 Ω 0.1 to 1 A AC/DC Approx. 0.12 Ω (Load: 0.5 VA) Approx. 0.02 Ω (Load: 1.5 VA) 1 A AC/DC I1-COM K8DT-AW2@@ K8DT-AW3@@ Input impedance 5 A AC/DC I2-COM 0.5 to 5 A AC/DC 100 A AC I2-COM 10 to 100 A AC *2 --- 200 A AC I3-COM 20 to 200 A AC *2 --- Input type Overload capacity Direct input Direct input or commercially available CT OMRON CT Continuous input at 120% of maximum input. 1 s at 150% Continuous input at 120% with an OMRON CT (K8AC-CT200L). 30 s at 200% 1 s at 600% * CT capacity on primary side. *1. The range is selected using connected terminals. *2. The K8DT-AW3 is designed to be used in combination with an OMRON K8AC-CT200L Current Transformer (CT). (Direct input is not possible.) 2 K8DT-AW Ratings Specifications Power supply voltage K8DT-AW@@D: 24 VAC 50/60Hz, 24 VDC K8DT-AW@@A: 100 to 240 VAC 50/60Hz Allowable operating voltage range 85% to 110% of power supply voltage Power consumption 24 VAC/24 VDC: 1.8 VA/1 W max. 100 to 240 VAC: 2.5 VA max. Allowable operating frequency range 50/60 Hz ±5 Hz Rated insulation voltage 600 VAC Input frequency range K8DT-AW1 and K8DT-AW2: DC input or AC input (45 to 65 Hz) K8DT-AW3: AC input (45 to 65 Hz) Operating value setting range (AL1, AL2) 10% to 100% of the maximum value of the setting range K8DT-AW1: 2 to 20 mA AC/DC 10 to 100 mA AC/DC 50 to 500 mA AC/DC K8DT-AW2: 0.1 to 1 A AC/DC (Compatible with commercially available CTs.) 0.5 to 5 A AC/DC (Compatible with commercially available CTs.) K8DT-AW3: When used with the OMRON CT (K8AC-CT200L). 10 to 100 A AC 20 to 200 A AC Overload capacity K8DT-AW1 and K8DT-AW2: Continuous input at 120% of maximum input, 1 s at 150% K8DT-AW3: Continuous input at 120%, 30 s at 200%, and 1 s at 600% with an OMRON CT (K8AC-CT200L). Note: CT capacity on primary side. Operating value 100% operation at set value Reset value 5% of operating value (fixed) 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 Startup lock time setting range (LOCK) 0 to 30 s (The startup lock timer starts when the input has reached approximately 30% or more of the set value.) Note: Enabled only for overcurrent operation. Indicators Power (PWR): Green, Output (OUT): Yellow, Alarm output 1 (ALM1): Red, Alarm output 2 (ALM2): Red Input impedance Refer to Input Range on page 2. Output form Relay: SPDT contact output Transistor: NPN output Output relay ratings Rated load: 250 VAC 5 A or 30 VDC 5 A (resistive load), 250 VAC 1 A (inductive load), 48 VDC 0.2 A (inductive load) 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 Transistor output ratings Contact form: SPST-NO (NPN transistor) Rated voltage: 24 VDC (maximum voltage: 26.4 VDC) Maximum current: 50 mA DC 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% RH (with no condensation) Storage humidity 25% to 85% RH (with no condensation) Altitude 2,000 m max. Applicable wires Stranded wires, solid wires, or ferrules Applicable wire size 0.25 to 1.5 mm2 (AWG24 to AWG16) Wire insertion force 8 N max. for AWG20 wire Repeat accuracy Applicable standards Operating ±0.5% full scale (at 25°C and 65% humidity, rated value power supply voltage) Operating ±50 ms (at 25°C and 65% humidity, rated power time supply voltage) EN 60947-5-1 Conforming Installation environment (pollution level 2, standards Overvoltage category III) EMC EN 60947-5-1 Safety UL 60947-5-1 (Listing), Korean Radio Waves Act standards (Act 10564), CCC (GB14048.5) 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 Impulse withstand voltage 6 kV (between live terminals and exposed, noncharged metal parts) Noise immunity Square-wave noise of 1-μs/100-ns pulse width with 1-ns rise time 100 to 240 VAC: 1,500 V power supply terminal common/normal mode 24 VAC: 1,500 V power supply terminal common/normal mode 24 VDC: 480 V power supply terminal common 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 3 axes Degree of protection Terminals: IP20 Screwdriver insertion force 15 N max. Wire stripping length 8 mm Ferrule length 8 mm Recommended flat-blade screwdriver XW4Z-00B (Omron) SZF 0.4 × 2.5 (Phoenix Contact) 210-719 (Wago) SDI 0.4 × 2.5 × 75 (Weidmuller) Current capacity 10 A (per pole) Number of insertions 50 times Case color N1.5 Case material PC, UL 94 V-0 Weight Approx. 100 g Mounting Mounts to DIN Track, or screw mounting Dimensions 17.5 × 90 × 90 mm (W×H×D) 3 K8DT-AW Connections Terminal Diagram K8DT-AW1 C A (1) (3) Power Supply Voltage (2)(3) A: 100 to 240 VAC (1) Current Input AW2 AW1 AW3 A1 A2 I3 C I1 I2 A1 D: 24 VAC/DC A2 A1 A2 (No polarity) 100 mA max. 20 mA max. 5 A max. 100 A max. CT 500 mA max. 1 A max. 200 A max. CT I3 C I1 I2 C I1 I3 I2 (2) Output C DIP SW I2 12 14 C: Relay Output T: Transistor Output 12 14 11 11 14 11 Inside Inside Note: 1. 2. 3. 4. 5. Do not connect anything to terminals that are shaded in gray. There is no polarity for the DC power supply input. For the current input, you can input only from the C terminal and one other terminal. Refer to Setting Ranges and Wiring Connections on the I1, I2, and I3 current input terminals. The K8DT-AW3 is designed to be used in combination with the OMRON K8AC-CT200L Current Transformer (CT). Wiring Example Directly Inputting a Current Using a CT Single-phase power supply Load Single-phase power supply Load CT Power A2 supply voltage A1 Power A2 supply voltage A1 A1 A2 I3 C I1 I2 A1 A2 I3 C I1 I2 Power supply AC/DC Power supply AC/DC DIP SW 12 14 11 DIP SW 12 14 11 Transistor Output Single-phase power supply Load Power A2 supply voltage A1 A1 A2 I3 C I1 I2 Power supply AC/DC DIP SW 14 11 PLC Note: Use copper wires with a rating of 75°C or an equivalent rating. 4 K8DT-AW Timing Charts Overcurrent and Undercurrent Operation Diagram Undercurrent and Undercurrent Operation Diagram DIP switch settings: SW3 ON and SW4 ON, or SW3 OFF and SW4 OFF DIP switch settings: SW3 OFF and SW4 ON. Power supply voltage Overcurrent set value (AL1) Undercurrent set value (AL2) Delay time: 250 ms (reference value) Hysteresis: Fixed at 5% Power supply voltage Input Undercurrent set value (AL1) Undercurrent set value (AL2) Hysteresis: Fixed at 5% Hysteresis: Fixed at 5% Hysteresis: Fixed at 5% Input Flashing AL1 alarm indicator Flashing AL2 alarm indicator Contacts 11-14 or transistor output LOCK t Lit Delay time: 250 ms (reference value) Lit t: Operating time (0.1 to 30 s) AL1 alarm indicator Flashing AL2 alarm indicator Contacts 11-14 or transistor output Lit Flashing Delay time: 250 ms (reference value) Delay time: 250 ms (reference value) Lit t t: Operating time (0.1 to 30 s) t LOCK: Startup lock time (0 to 30 s) t: Operating time (0.1 to 30 s) t LOCK: Startup lock time (0 to 30 s) Note 1. The K8DT-AW@ outputs are normally operative. Note 2. The startup lock prevents unnecessary alarms from being generated during the unstable period when the power is first turned ON. This function is valid only for overcurrent operation. LOCK Note 1. The K8DT-AW@ outputs are normally operative. Note 2. The startup lock prevents unnecessary alarms from being generated during the unstable period when the power is first turned ON. This function is valid only for overcurrent operation. Overcurrent and Overcurrent Operation Diagram DIP switch settings: SW3 ON and SW4 OFF. Power supply voltage Overcurrent set value (AL1) Overcurrent set value (AL2) Input Hysteresis: Fixed at 5% Flashing AL1 alarm indicator Delay time: 250 ms (reference value) Lit Flashing AL2 alarm indicator Hysteresis: Fixed at 5% Delay time: 250 ms (reference value) Lit t Contacts 11-14 or transistor output t: Operating time (0.1 to 30 s) t LOCK: Startup lock time (0 to 30 s) LOCK Note 1. The K8DT-AW@ outputs are normally operative. Note 2. The startup lock prevents unnecessary alarms from being generated during the unstable period when the power is first turned ON. This function is valid only for overcurrent operation. Nomenclature Front Indicators Item Terminal block (See note.) Power indicator Current knob (AL1) Lit when power is being supplied. Output status indicator (Output: Yellow) Lights for output (lit for normal operation) Alarm indicator (ALM1, ALM2: Red) Lit when there is an overcurrent or undercurrent. The indicator flashes to indicate the error status after the input has exceeded the set value while the operating time is being clocked. Output status indicator Current knob (AL2) Alarm indicator Operating time knob (T) Startup lock time knob (LOCK) Meaning Power indicator (PWR: Green) Setting Knobs Item Usage Current knob (AL1) Used to set the current to 10% to 100% of maximum setting range. Current knob (AL2) Used to set the current to 10% to 100% of maximum setting range. Operating time knob (T) Used to set the operating time to 0.1 to 30 s. Startup lock time knob (LOCK) Used to set the startup lock time to 0 to 30 s. Terminal block (See note.) Note: Use solid wires, stranded wires, or ferrules to connect to the terminals. To maintain the withstand voltage after connecting the terminals, insert 8 mm of exposed conductor into the terminal. Solid Wire 8 mm Stranded Wires 8 mm Ferrules 8 mm 5 K8DT-AW Operation Methods Setting Ranges and Wiring Connections Input type Wiring connections 2 to 20 mA AC/DC Direct input I1-COM 10 to 100 mA AC/DC Direct input I2-COM 50 to 500 mA AC/DC Direct input I3-COM 0.1 to 1 A AC/DC Direct input or commercially available CT I1-COM 0.5 to 5 A AC/DC Direct input or commercially available CT I2-COM 10 to 100 A AC * OMRON CT I2-COM 20 to 200 A AC * OMRON CT I3-COM Model Setting range K8DT-AW1 K8DT-AW2 Note: The DC input terminals have no polarity. * The K8DT-AW3 is designed to be used in combination with the OMRON K8AC-CT200L Current Transformer (CT). (Direct input is not possible.) K8DT-AW3 Connections Input <For K8DT-AW3> Connect the input between the I1-COM, I2-COM, or I3-COM terminals, according to the input current. Malfunctions may occur if the input is connected to unused terminals and the Unit will not operate correctly. For the K8DT-AW3, the I1 terminal is not used. For the K8DT-AW2, the I3 terminal is not used. If using the OMRON K8AC-CT200L CT, connect to terminals k and l on the K8AC-CT200L. (Terminals kt and lt are not used.) Single-phase power K8DT-AW3 A1 Power supply voltage A2 K8ACCT200L Power Supply k Connect the power supply to terminals A1 and A2. Current input I1 I2 I3 Outputs C (COM) l For a relay output, the SPDT contacts are output on terminals 11, 12, and 14. For a transistor output, the NPN output is on terminals 11 and 14. Do not use the transistor output for control applications. It is designed only to output a signal when an error is detected. 14 11 Contact output 12 Load or Transistor output 11 14 DIP Switch Settings The reset method and operating mode are set using the DIP switch located on the front of the Unit. K8DT-AW@ does not use SW1. Note: Open the DIP switch cover to set the DIP switch. Keep the DIP switch cover closed while the power supply to the Relay is ON. DIP Switch Functions ON ❍ ↑ 3 4 Automatic reset ❍ --- --- Manual reset ● --- --- --- ❍ ❍ --- ● ❍ O N OFF ● ↓ 4 3 2 1 Resetting method SW4 SW3 SW2 SW1 DIP switch pins Operating mode 1 2 Pin ON OFF AL1 AL2 Overcurrent Undercurrent Undercurrent Undercurrent Overcurrent Overcurrent --- ❍ ● Overcurrent Undercurrent --- ● ● Not used. Note: All pins are set to OFF at the factory. 6 K8DT-AW Setting Method Setting Current The current knobs (AL1, AL2) are used to set the current. The current 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 current. The maximum setting range will differ depending on the model and the input terminal. Example: K8DT-AW3 Using Input Terminals I3-COM The maximum measuring current will be 200 A AC and the setting range will be 20 to 200 A. 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 current exceeds (drops lower than) the set value, the alarm indicator will start flashing for the set period and then stay lit. Startup Lock Time The startup lock time is set using the startup lock time knob (LOCK). The startup lock time can be set to between 0 and 30 s. The startup lock time will start when the input current reaches 30% or more of the set value. Use startup lock time to prevent unwanted operation, e.g., as a result of inrush current. Note: This function is valid only for overcurrent operation. Inrush current Current set value 30% of current set value Startup lock time Startup lock timer start Errors are not detected during this time. 7 K8DT-AW Dimensions (Unit: mm) Single-phase Overcurrent/Undercurrent Relay K8DT-AW1 K8DT-AW2 K8DT-AW3 100 90 86 17.5 5 90 OMRON CT 9.3 9.3 1.7 1.7 K8AC-CT200L 11 4.7 63 54 Four M4 × 6 screws 20 17 50 8.5 Mounting Hole Dimensions 13.5 Two M5 screw holes or two 5.5-dia. holes 34.5 81.5 76 33.5 6 57 14.5 30 dia. 14.5 86 5.2 10 10 Note: The OMRON Current Transformer (CT) is designed to be used with the K8DT-AW3. Use terminals k and l for connections. (Terminals kt and lt are not used.) 20 1.8 4.1 5.9 76 Options (Order Separately) Front Cover Y92A-D1A 1.8 52.7 3.5 17.5 5.85 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 1000(500)* 10 25 15(5)* 27±0.15 1 * Dimensions in parentheses are for the PFP-50N. 8 K8DT-AW Questions and Answers Q Checking Operation Overcurrents 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. Undercurrent Gradually decrease the input from 120% of the set value and check the operation using the same method as for overcurrent. Example: Overcurrent Operating Mode, Normally Closed Relay Drive, and an Operating Time of 5 s. Set value Current input Flashing Lit Alarm indicator 5s Contact output or transistor output Can a motor with a rated current of 5 A be monitored using the K8DT? Are there any application precautions? The K8DT-AW1 and K8DT-AW2 cannot be used with motor loads. Use the K8DT-AW3 in combination with the K8ACCT200L Current Transformer (CT). With motor loads, the startup current and stall current will cause a current of many times the rated current to flow. Refer to the following figure for information on the motor startup current. Motor current (percentage of rated value) Q 500% 100% Several seconds to several tens of seconds Connection Diagram Time from beginning of startup A 100 VAC 0 to 10 A 30 Ω 400 W (two in parallel) Output Input terminals Power supply Variable autotransformer A1 A2 100 VAC ± C 100V Cycle counter Q How to Measure the Operating Time Overcurrent Change the input suddenly from 0% to 120% of the set value and measure the time until the Unit operates. Undercurrent Change the input suddenly from 120% to 0% of the set value and measure the time until the Unit operates. Q For a motor with a rating of 5 A, the startup current will be approximately 30 A. The startup current will exceed the overload capacity (rating: 150% for 1 s) of the K8DT-AW1 and K8DT-AW2 and result in failure of the Relay. To monitor the motor load, use the K8DT-AW3. (Overload capacity: 120% of rating for continuous load, 200% of rating for 30 s, and 600% of rating for 1 s). The K8DT-AW3 has a large input range. Pass the conductors multiple times through the special CT. Monitoring Switch-mode Power Supplies Switch-mode Power Supplies cannot be monitored. In circuits with a capacitor input, including switch-mode power supplies, the input capacitor recharge current flows in pulse form as the load current. The K8DT-AW@ has a built-in filter as a countermeasure against high frequencies and cannot be used to remove pulse current. Primary-side conductor To the K8DT-AW3 K8AC-CT200L Concept behind Passing Conductor through the CT When Using the K8DT-AW3 Example: Monitoring Overload of a Motor with a Rated Current of 5 A K8DT set value: Overcurrent detection, operating value setting: 25%, operating time: 0.1 s Startup lock timer: 0.1 to 30 s (Set the timer according to the duration of the startup current.) The setting range for the K8DT-AW3 is 10% to 100% of the rated current (i.e., 10 to 100 A). Pass the conductors through the CT five times so that at least 10 A of current flows. The input current to the K8DT will be 25 A (i.e., 5 A x 5 loops). If a startup current of six times the rated current is generated, it will be 150 A (i.e., 25 A x 6). The overload capacity for the K8DT-AW3 is 200% of the rating for 30 s. The Relay will not fail even if the startup current continues for 30 s, and it is possible to perform overload detection. 9 K8DT-AW 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 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. !CAUTION Doing so may occasionally result in minor injury due to electric shock. Do not touch the Relay while the power supply is ON, except for the adjustment knob. 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. Meaning of Product Safety Symbols Used to warn of the risk of electric shock under specific conditions. Used for general prohibitions for which there is no specific symbol. Used to indicate prohibition when there is a risk of minor injury from electrical shock or other source if the product is disassembled. Used for general mandatory action precautions for which there is no specified symbol. Explosions may cause minor injuries. Do not use the product in locations with inflammable or explosive gases. There is a risk of minor electrical shock, fire, or device failure. Do not disassemble, modify, repair, or touch the inside of the product. 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. If the Relay is used with incorrect wiring, fire may occasionally occur, possibly resulting in physical damage. Check the wiring for mistakes before you turn ON the power supply. If the Relay fails, monitoring and alarm outputs may fail to operate. This may result in physical damage to the facilities, equipment, or other devices that are connected to it. To reduce this risk, inspect the Relay regularly. To maintain safety in the event of malfunction of the Relay, take appropriate safety measures, such as installing a monitoring device on a separate line. If the wire insertion length is insufficient, fire may occasionally occur, possibly resulting in physical damage. Insert the wires all the way to the back. The terminal block may be damaged if you insert a flat-blade screwdriver in the release hole with excessive force. Insert the flat-blade screwdriver into the release holes with a force of 15 N or less. 10 K8DT-AW Precautions for Safe Use 30.To prevent wire materials from smoking or igniting, use the wiring materials given in the following table. 1. Do not use or store the product in the following locations. • Locations subject to water, or oil Stripping length Recommended wire Without Ferrules With Ferrules • Outdoor locations or under direct sunlight • Locations subject to dust or corrosive gases (sulfurizing gases, ammonia gases, etc.) • Locations subject to rapid temperature changes • Locations prone to icing and dew condensation • Locations subject to vibration and large shocks 0.25 to 1.5mm2/Equivalent to AWG24 to 16 10 mm 8 mm Note: Please use Ferrules with UL certification (R/C). 31.Use only the specified wires for wiring. 32.When wiring the terminals, allow some leeway in the wire length. 33.Make sure that the power supply is turned OFF before you change any DIP switch setting. • Locations subject to wind and rain Precautions for Correct Use • Locations subject to static electricity or noise • Locations subject to 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. Check terminal polarity when wiring and wire all connections correctly. The power supply terminals do not have polarity. 4. Do not wire the input and output terminals incorrectly. 5. Make sure the power supply voltage and loads are within the specifications and ratings for the product. 6. Make sure the ferrule terminals for wiring are of the specified size. 7. The stripping length is 8 mm. Insert the wires all the way to the back. 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. 24.Do not wire anything to the release holes. 25.When you insert a flat-blade screwdriver into a release hole, do not tilt or twist the screwdriver. The terminal block may be damaged. 26.Insert a flat-blade screwdriver into the release holes at an angle. The terminal block may be damaged if the screwdriver is inserted straight in. 27.Do not allow the flat-blade screwdriver to fall when you are holding it in a release hole. 28.Do not bend a wire past its natural bending radius or pull in it with excessive force. Doing so may break the wires. 29.Do not insert more than one wire into each terminal insertion hole. 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. The distortion in the input waveform must be 30% max. If the input waveform is distorted beyond this level, it may cause unnecessary operation. 3. Error will be large if the product is used for thyristor or inverter control. 4. When cleaning the product, do not use thinners or solvents. Use commercial alcohol. 5. If you use stranded wires, make sure that there are no loose wire strands. 6. If you wire crossovers and connect terminal blocks in parallel, a large current will flow. Make sure that the current does not exceed 10 A. 7. The terminal block may be damaged if the recommended tool is not used. Use the recommended flat-blade screwdriver to operate the release holes. Correct Mounting Direction, Mounting, and Removing Mounting to DIN Track To mount the Relay to a DIN Track, hook the Relay onto the DIN Track and press the Relay in the direction of the arrow until you hear it lock into place. (1) (2) Removing from the DIN Track To remove the Relay, insert a screwdriver into the hook on the top or bottom and pull out the hook to release the Relay. Applicable DIN Tracks PFP-100N (100 cm) PFP-50N (50 cm) 30 mm min. • Leave at least 30 mm of space between the product and other devices to allow easy installation and removal. 11 K8DT-AW Screw Mounting Connecting Stranded Wires 1. Pull out the two hooks on the back of the Relay to the outside until you hear them click in place. 2. Insert M3 screws into the hook holes and secure the Relay. Use the following procedure to connect the wires to the terminal block. 1. Hold a flat-blade screwdriver at an angle and insert it into the release hole. The angle should be between 10° and 15°. If the flat-blade screwdriver is inserted correctly, you will feel the spring in the release hole respond. 2. With the flat-blade screwdriver still inserted into the release hole, insert the wire into the terminal hole until it strikes the terminal block. 3. Remove the flat-blade screwdriver from the release hole. Mounting Hole Dimensions (1) Two M3 screw holes or two 3-dia. holes (2) <Lower side> <Upper side> 108 Flat-blade screwdriver (2) (1) Note: 1. Pull out the hooks to mount the Relay with screws. 2. Recommended tightening torque: 0.5 to 0.6 N·m. (2) (3) (1) Wire Wire (2) (3) (1) Flat-blade screwdriver Adjusting the Setting Knobs 10 to 15° • Use a flat-blade 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. Flat-blade screwdriver Flat-blade screwdriver 10 to 15° Checking Connections • After the insertion, pull gently on the wire to make sure that it will not come off and the wire is securely fastened to the terminal block. • To prevent short circuits, insert the stripped part of a stranded or solid wire or the conductor part of a ferrule until it is hidden inside the terminal insertion hole. (See the following diagram.) Setting knob <Upper side> • To reduce the error in the setting knob, always turn the setting knob from the minimum setting toward the maximum setting. <Upper side> <Lower side> <Lower side> Wire Ferrule Connecting Wires to the Push-In Plus Terminal Block Part Names of the Terminal Block Ferrule <Lower side> <Upper side> Removing Wires from the Push-In Plus Terminal Block Terminal (Insertion) hole Release hole Release hole Terminal (Insertion) hole Connecting Wires with Ferrules and Solid Wires Insert the solid wire or ferrule straight into the terminal block until the end strikes the terminal block. <Upper side> Terminal (Insertion) hole Ferrule Wire Use the following procedure to remove wires from the terminal block. The same method is used to remove stranded wires, solid wires, and ferrules. 1. Hold a flat-blade screwdriver at an angle and insert it into the release hole. 2. With the flat-blade screwdriver still inserted into the release hole, remove the wire from the terminal insertion hole. 3. Remove the flat-blade screwdriver from the release hole. <Lower side> <Upper side> <Lower side> Flat-blade screwdriver (2) Release hole (3) (1) Wire Release hole Ferrule Terminal (Insertion) hole If a wire is difficult to connect because it is too thin, use a flat-blade screwdriver in the same way as when connecting stranded wire. Wire (2) (3) (1) Flat-blade screwdriver 10 to 15° Flat-blade screwdriver Flat-blade screwdriver 10 to 15° 12 K8DT-AW Recommended Ferrules and Tools EN/IEC Standard Compliance Recommended ferrules Wire (mm2) (AWG) 0.25 Recommended ferrules Ferrule length (mm) 24 Manufactured Manufactured Manufactured by Phoenix by by Wago Contact Weidmuller 8 AI0.25-8 H0.25/12 FE-0.25-8N-YE 0.34 22 8 AI0.34-8 H0.34/12 FE-0.34-8N-TQ 0.5 20 8 AI0.5-8 H0.5/14 FE-0.5-8N-WH 0.75 18 8 AI0.75-8 H0.75/14 FE-0.75-8N-GY 1 18 8 AI1-8 H1.0/14 FE-1.0-8N-RD 1.5 16 8 AI1.5-8 H1.5/14 FE-1.5-8N-BK PZ6 roto Variocrimp4 CRIMPFOX6 CRIMPFOX6T-F CRIMPFOX10S Recommended crimp tool Note: 1. Make sure that the outer diameter of the wire coating is smaller than the inner diameter of the insulation sleeve of the recommended ferrule. 2. Make sure that the ferrule processing dimensions conform to the following figures. 8 mm 2.1 mm max. • Refer to the contents of this datasheet for cable selection and other conditions for compliance with EMC standards. Precaution on EN Standard Compliance The K8DT complies with EN 60947-5-1 when it is built into a panel, but observe the following handling methods to ensure compliance with the requirements of this standard. Wiring Overvoltage category III Pollution degree 2 • Open-frame Device • If basic, double, or reinforced insulation is required, use the basic, double, or reinforced insulation defined in IEC 60664 that is suitable for the maximum applied voltage for the clearance, solid insulation, and other factors. • There is basic insulation between the power supply terminals and input terminals. • There is basic insulation between the power supply terminals and output terminals. • There is basic insulation between the input terminals and output terminals. • Operating section must have reinforced or double insulation. • The sides of the case are not isolated. • Connect the output contacts (contacts with different polarity) so that they reach the same potential. 2.7 mm max. Recommended Flat-blade Screwdriver Use a flat-blade screwdriver to connect and remove wires. Use the flat-blade screwdriver. The following table shows manufacturers and models as of 2015/Dec. Side Front Not isolated 2.5 mm dia. 0.4 mm Reinforced insulation (Double insulation) 2.5 mm Model XW4Z-00B Manufacturer Omron ESD0.40✕2.5 Wera SZF 0.4✕2.5 Phoenix Contact 0.4✕2.5✕75 302 Wiha AEF.2.5✕75 Facom 210-719 Wago SDI 0.4✕2.5✕75 Weidmuller 13 MEMO 14 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. BUYER ACKNOWLEDGES THAT IT ALONE HAS DETERMINED THAT THE PRODUCTS WILL SUITABLY MEET THE REQUIREMENTS OF THEIR INTENDED USE. Omron further disclaims all warranties and responsibility of any type for claims or expenses based on infringement by the Products or otherwise of any intellectual property right. (c) Buyer Remedy. Omron’s sole obligation hereunder shall be, at Omron’s election, to (i) replace (in the form originally shipped with Buyer responsible for labor charges for removal or replacement thereof) the non-complying Product, (ii) repair the non-complying Product, or (iii) repay or credit Buyer an amount equal to the purchase price of the non-complying Product; provided that in no event shall Omron be responsible for warranty, repair, indemnity or any other claims or expenses 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. Return of any Products by Buyer must be approved in writing by Omron before shipment. Omron Companies shall not be liable for the suitability or unsuitability or the results from the use of Products in combination with any electrical or electronic components, circuits, system assemblies or any other materials or substances or environments. Any advice, recommendations or information given orally or in writing, are not to be construed as an amendment or addition to the above warranty. See http://www.omron.com/global/ or contact your Omron representative for published information. Limitation on Liability; Etc. OMRON COMPANIES SHALL NOT BE LIABLE FOR SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, LOSS OF PROFITS OR PRODUCTION OR COMMERCIAL LOSS IN ANY WAY CONNECTED WITH THE PRODUCTS, WHETHER SUCH CLAIM IS BASED IN CONTRACT, WARRANTY, NEGLIGENCE OR STRICT LIABILITY. Further, in no event shall liability of Omron Companies exceed the individual price of the Product on which liability is asserted. Suitability of Use. Omron Companies shall not be responsible for conformity with any standards, codes or regulations which apply to the combination of the Product in the Buyer’s application or use of the Product. At Buyer’s request, Omron will provide applicable third party certification documents identifying ratings and limitations of use which apply to the Product. This information by itself is not sufficient for a complete determination of the suitability of the Product in combination with the end product, machine, system, or other application or use. Buyer shall be solely responsible for determining appropriateness of the particular Product with respect to Buyer’s application, product or system. Buyer shall take application responsibility in all cases. 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. It is our practice to change part numbers when published ratings or features are changed, or when significant construction changes are made. However, some specifications of the Product may be changed without any notice. When in doubt, special part numbers may be assigned to fix or establish key specifications for your application. Please consult with your Omron’s representative at any time to confirm actual specifications of purchased Product. Errors and Omissions. Information presented by Omron Companies has been checked and is believed to be accurate; however, no responsibility is assumed for clerical, typographical or proofreading errors or omissions. OMRON Corporation Industrial Automation Company Authorized Distributor: Kyoto, 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 2895 Greenspoint Parkway, Suite 200 Hoffman Estates, IL 60169 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 2016 All Rights Reserved. In the interest of product improvement, specifications are subject to change without notice. CSM_1_1_0316 Cat. No. N202-E1-01 0316 (0316)