Safety Key Selector Switch A22TK Key-type Selector Switch with Direct Opening Mechanism • Selector Switch for secure equipment activation during maintenance • 30 types of exclusive keys make it more difficult to disable. • The trapped key of the D4JL Guard Lock Safety-door Switch has the same shape as the lockout key of the D4GL-SK10-LK@, D4SL-NSK10-LK@ Slide Key Unit. Units can be combined to improve safety. (Specify the same key type.) • Common to the switch part of Emergency Stop Switch A22E. (Non-lighted model only) For the most recent information on models that have been certified for safety standards, refer to your OMRON website. For safety precautions for all pushbutton switches, refer to the website at: www.ia.omron.com, and “Safety Precautions” on page 12 in this catalog. Features Because the A22TK Safety Key Selector Switch uses the same key as the Guard Lock Safety-door Switch, the operator is prevented from forgetting to remove the key. The result is a safer working environment when performing maintenance. Common Key for Door Switch and Selector Switch Guard Lock Safety-door Switch Safety Key Selector Switch Broad range of applications include use with door locks, mode switching, and emergency stops when teaching Guard Lock Safety-door Switch D4GL-SK10-LK@ D4SL-NSK10-LK@ D4GL-SK10-LK@ D4SL-NSK10-LK@ A22TK D4JL Safety Key Selector Switch Enabling Grip Switch A22TK A4EG With the Selector Switch, it is possible to switch between normal operation mode (use of Door Switch is available) and maintenance mode (use of Enabling Grip Switch is available). Safety Controllers such as Safety Guard Switching Unit G9SX-GS D4JL Common Key * To unify keys, specify the same key type. 1 A22TK Safety can be ensured, but there is a risk of human error occurring during operation. Fr o m Guard Lock Safety-door Switch only Guard Lock Safety-door Switch When only the Door Switch is used, the operator is at risk of being shut inside the barrier if, for example, he/she forgets to remove the trapped key and a third party locks the door. The equipment may also be started up while the operator is inside. + Key Selector Switch (A22K) The safety level is enhanced by switching to maintenance mode. However, because two different types of keys are required, the operator is still at risk of being shut inside if he/she forgets to remove the trapped key. Different keys I should close it. I should close it. I'm trapped inside! The equipment started up! Assumed risks Forgetting to remove the key Assumed risks Being trapped inside Forgetting to remove the key Starting equipment Being trapped inside By using a common key, the risk of human error is reduced in operations from when the door is open/shut until the equipment is started. To Guard Lock Safety-door Switch + Safety Key Selector Switch (A22TK) The two locks on the door and equipment use the same key, reducing the likelihood that the user will forget to remove it. In addition, the key cannot be removed when maintenance is being performed. This prevents the key from being lost and greatly reduces the risk of an operator becoming trapped inside. Same Key A22TK D4JL Common key 1 Unlock the door UNLOCK 2 LOCK Operation stopped MAINTENANCE RUN Start maintenance Operation double-stopped Key: Cannot be removed Key: Can be removed Guard Lock Safety-door Switch Safety Key Selector Switch 2 D4JL A22TK 3 1 4 I take the key with me when I enter, so there is no worry of becoming trapped inside! D4JL 4 Lock the door UNLOCK A22TK 3 LOCK Operation starts End maintenance MAINTENANCE RUN Operation stopped Key: Can be removed Key: Cannot be removed Furthermore Same Key By using the Enabling Grip Switch during maintenance and by using a Safety Laser Scanner or Safety Mat to detect the presence of operators, equipment malfunctions can be prevented when operators are inside, enabling a higher safety level. 2 A22TK Model Number Structure Model Number Legend (Ordering as a set) The Operation Unit and Switch are delivered as a set. For information on combinations, refer to Ordering Information on page 5. The models numbers of only Operation Units are they same as the set model numbers without (2) Contact Configuration. Example: The model number of the Operation Unit from the A22TK-2LL-12-K01 Set is A22TK-2LL-K01. Ask your OMRON representative about parts without model numbers when ordering. (1) (2) (3) (4) A22TK- 2LL - 12 - K 01 (1) Operation Unit Symbol No. of notches (3) Key Availability Key release position Symbol Key position of NC contact closing 2LL 2RL (4) Key Type 01 to 30: 30 types * Type None No key K With key (2) Contact Configuration 2 Symbol 2LR 2RR Type 01 SPST-NC 11 SPST-NO/SPST-NC 02 DPST-NC 12 DPST-NC + SPST-NO 21 DPST-NO + SPST-NC 03 TPST-NC * Key can be created up to 30 types. Specify keys in order starting from 01. Key drop preventive type A22TK-@ -@ -@ 01-SJ ― ― ― (1) (2) (3) (2) Contact Configuration (1) Operation Unit Symbol No. of notches 2LL 2RL 2 2LR 2RR 3 Key release position Key position of NC contact closing (3) Key Availability Type Symbol Type 01 SPST-NC None No key 11 SPST-NO/SPST-NC K With key 02 DPST-NC 12 DPST-NC+SPST-NO 21 DPST-NO+SPST-NC 03 TPST-NC Symbol A22TK Key drop preventive (on the A22TK-2RL-@) Standard type NC contact: ON Key: Hold Key drop preventive type NC contact: ON Key: Hold NC contact: OFF Key: Removed Operating range NC contact: OFF Key: Removed Operating range NC contact: OFF Key: Hold Contact Configuration A22TK-2@L Key position SPST-NC SPST-NO/SPST-NC DPST-NC DPST-NC + SPST-NO DPST-NO + SPST-NO TPST-NC SPST-NC SPST-NO/SPST-NC DPST-NC DPST-NC + SPST-NO DPST-NO + SPST-NO TPST-NC A22TK-2@R Key position Operation Angle ＊1 FP 15° 90° ＊1 TTP 90° HP ＊2 A22TK-2L@ A22TK-2L@-SJ FP 15° HP ＊2 A22TK-2R@ A22TK-2R@-SJ FP : Free position TTP : Total travel position HP : Key hold position (drop prevention) *2 *1. If the key is stopped at a position between FP and TTP, the contacts will not be in the states indicated above. Always be careful to turn the key completely to the FP (HP) or TTP position to ensure that the contacts are properly switched and the direct open circuit operation characteristics are obtained. *2. Key drop preventive type (A22TK-@-SJ or A22TK-@-SJ only) 4 A22TK Ordering Information Switch List of Models (Completely Assembled) ... Shipped as a set which includes the Operation Unit and Switch. The models numbers of only Operation Units are they same as the set model numbers without (2) Contact Configuration. Example: The model number of the Operation Unit from the A22TK-2LL-12-K01 Set is A22TK-2LL-K01. Ask your OMRON representative about parts without model numbers when ordering. Appearance Key release position Key position of NC contact closing Contact Configuration SPST-NC SPST-NO/SPST-NC DPST-NC DPST-NC + SPST-NO DPST-NO + SPST-NC TPST-NC SPST-NC SPST-NO/SPST-NC DPST-NC DPST-NC + SPST-NO DPST-NO + SPST-NC TPST-NC SPST-NC SPST-NO/SPST-NC DPST-NC DPST-NC + SPST-NO DPST-NO + SPST-NC TPST-NC SPST-NC SPST-NO/SPST-NC DPST-NC DPST-NC + SPST-NO DPST-NO + SPST-NC TPST-NC SPST-NC SPST-NO/SPST-NC DPST-NC DPST-NC + SPST-NO DPST-NO + SPST-NC TPST-NC SPST-NC SPST-NO/SPST-NC DPST-NC DPST-NC + SPST-NO DPST-NO + SPST-NC TPST-NC SPST-NC SPST-NO/SPST-NC DPST-NC DPST-NC + SPST-NO DPST-NO + SPST-NC TPST-NC SPST-NC SPST-NO/SPST-NC DPST-NC DPST-NC + SPST-NO DPST-NO + SPST-NC TPST-NC 5 Key availability Yes No Model A22TK-2LL-01-K01 A22TK-2LL-11-K01 A22TK-2LL-02-K01 A22TK-2LL-12-K01 A22TK-2LL-21-K01 A22TK-2LL-03-K01 A22TK-2RL-01-K01 A22TK-2RL-11-K01 A22TK-2RL-02-K01 A22TK-2RL-12-K01 A22TK-2RL-21-K01 A22TK-2RL-03-K01 A22TK-2LR-01-K01 A22TK-2LR-11-K01 A22TK-2LR-02-K01 A22TK-2LR-12-K01 A22TK-2LR-21-K01 A22TK-2LR-03-K01 A22TK-2RR-01-K01 A22TK-2RR-11-K01 A22TK-2RR-02-K01 A22TK-2RR-12-K01 A22TK-2RR-21-K01 A22TK-2RR-03-K01 A22TK-2LL-01-01 A22TK-2LL-11-01 A22TK-2LL-02-01 A22TK-2LL-12-01 A22TK-2LL-21-01 A22TK-2LL-03-01 A22TK-2RL-01-01 A22TK-2RL-11-01 A22TK-2RL-02-01 A22TK-2RL-12-01 A22TK-2RL-21-01 A22TK-2RL-03-01 A22TK-2LR-01-01 A22TK-2LR-11-01 A22TK-2LR-02-01 A22TK-2LR-12-01 A22TK-2LR-21-01 A22TK-2LR-03-01 A22TK-2RR-01-01 A22TK-2RR-11-01 A22TK-2RR-02-01 A22TK-2RR-12-01 A22TK-2RR-21-01 A22TK-2RR-03-01 A22TK Appearance Key release position Key position of NC contact closing Contact Configuration Key availability SPST-NC SPST-NO/SPST-NC DPST-NC DPST-NC + SPST-NO DPST-NO + SPST-NC TPST-NC SPST-NC SPST-NO/SPST-NC DPST-NC DPST-NC + SPST-NO DPST-NO + SPST-NC TPST-NC SPST-NC SPST-NO/SPST-NC DPST-NC DPST-NC + SPST-NO DPST-NO + SPST-NC TPST-NC SPST-NC SPST-NO/SPST-NC DPST-NC DPST-NC + SPST-NO DPST-NO + SPST-NC TPST-NC SPST-NC SPST-NO/SPST-NC DPST-NC DPST-NC + SPST-NO DPST-NO + SPST-NC TPST-NC SPST-NC SPST-NO/SPST-NC DPST-NC DPST-NC + SPST-NO DPST-NO + SPST-NC TPST-NC SPST-NC SPST-NO/SPST-NC DPST-NC DPST-NC + SPST-NO DPST-NO + SPST-NC TPST-NC SPST-NC SPST-NO/SPST-NC DPST-NC DPST-NC + SPST-NO DPST-NO + SPST-NC TPST-NC Yes No Model A22TK-2LL-01-K01-SJ A22TK-2LL-11-K01-SJ A22TK-2LL-02-K01-SJ A22TK-2LL-12-K01-SJ A22TK-2LL-21-K01-SJ A22TK-2LL-03-K01-SJ A22TK-2RL-01-K01-SJ A22TK-2RL-11-K01-SJ A22TK-2RL-02-K01-SJ A22TK-2RL-12-K01-SJ A22TK-2RL-21-K01-SJ A22TK-2RL-03-K01-SJ A22TK-2LR-01-K01-SJ A22TK-2LR-11-K01-SJ A22TK-2LR-02-K01-SJ A22TK-2LR-12-K01-SJ A22TK-2LR-21-K01-SJ A22TK-2LR-03-K01-SJ A22TK-2RR-01-K01-SJ A22TK-2RR-11-K01-SJ A22TK-2RR-02-K01-SJ A22TK-2RR-12-K01-SJ A22TK-2RR-21-K01-SJ A22TK-2RR-03-K01-SJ A22TK-2LL-01-01-SJ A22TK-2LL-11-01-SJ A22TK-2LL-02-01-SJ A22TK-2LL-12-01-SJ A22TK-2LL-21-01-SJ A22TK-2LL-03-01-SJ A22TK-2RL-01-01-SJ A22TK-2RL-11-01-SJ A22TK-2RL-02-01-SJ A22TK-2RL-12-01-SJ A22TK-2RL-21-01-SJ A22TK-2RL-03-01-SJ A22TK-2LR-01-01-SJ A22TK-2LR-11-01-SJ A22TK-2LR-02-01-SJ A22TK-2LR-12-01-SJ A22TK-2LR-21-01-SJ A22TK-2LR-03-01-SJ A22TK-2RR-01-01-SJ A22TK-2RR-11-01-SJ A22TK-2RR-02-01-SJ A22TK-2RR-12-01-SJ A22TK-2RR-21-01-SJ A22TK-2RR-03-01-SJ Accessories Name Control Box Appearance Classification Model One hole, yellow box (for emergency stop) A22Z-B101Y Remarks Material: Polycarbonate resin Note: For information on two-hole and three-hole control boxes, contact your OMRON representative. The Switch Block, Mounting Latch, Connector, and Lock Plate of A22E can be used. 6 A22TK Specifications Approved Standard Ratings • UL, cUL (File No. E41515): 6 A at 220 VAC, 10 A at 110 VAC • TÜV (EN60947-5-1) (Low Voltage Directive): 3 A at 220 VAC • CCC (GB14048.5): 3 A at 240 VAC, 1.5 A at 24 VDC Certified Standards Certification body Standards UL *1 UL508, C22.2 No.14 File No. E41515 TÜV SÜD EN60947-5-1 (certified direct opening mechanism) Consult your OMRON representative for details. CQC(CCC) GB14048.5 2003010303070635 KOSHA EN60947-5-1 2009-156 Note: Only models with NC contacts have a direct opening mechanism. *1. UL-certification for CSA C22.2 No. 14 has been obtained. (Certification has been obtained for the Switch Unit only) Ratings Contacts (Standard load) Rated carry current Rated voltage (V) (A) Rated current (A) AC15 (inductive load) AC12 (resistive load) DC13 (inductive load) DC12 (resistive load) 24 VAC 10 10 110 5 10 220 3 6 380 2 3 - - 24 VDC 440 1 2 1.5 10 110 0.5 2 0.2 0.6 10 220 - - 0.2 380 0.1 Note: 1. Rated current values are determined according to the testing conditions. The above ratings were obtained by conducting tests under the following conditions. (1) Ambient temperature: 20±2C° (2) Ambient humidity: 65±5% RH (3)Operating frequency: 20 operations/minute 2. Minimum applicable load: 10 mA at 5 VDC Characteristics Item Allowable operating frequency Model Mechanical Electrical Insulation resistance Dielectric strength Durability 30 operations/minute max. 100 MΩ min. (at 500 VDC) Between terminals of same polarity 2,500 VAC, 50/60 Hz for 1 min. Between each 2,500 VAC, 50/60 Hz for 1 min. terminal and ground Vibration resistance *1 Shock resistance A22TK 30 operations/minute max. 10 to 55 Hz, 1.5-mm double amplitude (within 1 ms) Destruction 1000 m/s2 Malfunction *1 250 m/s2 max. Mechanical 100,000 operations min. Electrical 100,000 operations min. Ambient operating temperature *2 -20 to +70°C Ambient operating humidity 35% to 85%RH Ambient storage temperature -40 to +70°C Degree of protection IP65 *3 Electric shock protection class Class II PTI (tracking characteristic) 175 Degree of contamination 3 (EN60947-5-1) *1. Malfunction within 1 ms. *2. With no icing or condensation. *3. The degree of protection from the front of the panel. Note: 1. Do not allow the load current to exceed the rated value. 2. The contact ON/OFF timing is not synchronized. Confirm performance before application. 3. Once the contacts have been used to switch a load, however, they cannot be used to switch smaller loads. The contact surfaces will become rough once they have been used and contact reliability for smaller loads may be reduced. 7 A22TK Structure and Nomenclature * Two keys are provided. Key Operation Unit Switch Contact Ratings 10 A at 110 VAC (resistive load) 10 A at 24 VDC (resistive load) Contact Configuration SPST-NC, SPST-NO/SPST-NC, DPST-NC, DPST-NC + SPST-NO, DPST-NO + SPST-NC, and TPST-NC Lock Plate (attached with the Switch) (Refer to "Mounting the Lock Plate" on page 13 for use.) (The above figures are examples of the model with key.) Dimensions (Unit: mm) A22TK-2LL A22TK-2RL Lock Plate (included) (A22Z-3380) Lock Plate (included) (A22Z-3380) Key Key 30 dia. 27 dia. 29.5 dia. 30 dia. 27 dia. 29.5 dia. 34 16.5 32.2 34 1 5.9 0.5 10.9 16.5 54.7 32.6 32.2 1 5.9 0.5 10.9 54.7 32.6 Terminal Arrangement (Bottom View) 2 Contacts 3 Contacts 20.7 10 LOC OPEN LOC OPEN 16.7 16.7 M3.5 screws Switch blocks Switch blocks Terminal Connection Type Terminal connection (Bottom View) SPST-NO/SPST-NC DPST-NC DPST-NC + SPST-NO DPST-NO + SPST-NC TPST-NC 1 3 1 1 1 1 3 1 3 3 1 1 1 2 4 2 2 2 2 4 2 4 4 2 2 2 Non-lighted 8 A22TK Application Examples ●Application Overview • • • • Switching between normal operation mode and maintenance mode is performed manually. In normal operation mode, the power supply to the motor M2 is turned OFF when the guard is opened. In maintenance mode, the power supply to the motor M2 is turned OFF when the enabling switch is released or strongly gripped. In normal operation mode and maintenance mode, the power supply to the motor M1 and M2 is turned OFF when the emergency stop switch is pressed. ●Evaluation example PL/safety category Model Stop category Reset − − Safety Key Selector Switch A22TK-2@@-11 (SPST-NO/SPST-NC type) Guard lock Safety-door Switch D4NL-@A@A-@, -@A@B-@, -@A@C-@ (Mechanical Lock Type) Enabling Grip Switch A4EG Safety Guard Switching Unit G9SX-GS226-T15 Flexible Safety Unit G9SX-BC202 (24 VDC) PLe/4 equivalent Note: The above PL is only the evaluation result of the example concerning solely the mode selection. The PL must be evaluated in an actual application by the customer after confirming the usage conditions. ●Circuit Diagram Feedback loop Emergency Stop Switch S1 Lock release signal 11 21 12 22 KM1 KM3 KM4 KM2 S4 S5 S2 41 KM1 +24V Open Guard lock Safety-door Switch KM2 A1 T11 T12 T21 T22 T31 T32 T33 Y1 42 11 M1 G9SX-BC202 (Unit 1) 12 +24V Control circuit Guard S3 Enabling Switch A2 S6 (2) (4) (1) (3) S14 S24 L1 L2 X1 X2 Feedback loop KM1 KM2 OPEN PLC etc. KM3 S8 Selector Switch A22TK Stop signal +24V GND S7 KM4 +24V Open Open A1 T11 T12 T21 T22 Y1 Y3 T61 T62 T71 T72 M1 M2 Open Open Y2 Y4 AND T31 T32 T33 T41 T42 OFF G9SX-GS226-T15 (Unit 2) Manual +24V Control circuit KM3 Auto KM4 S14 S24 S44 S54 A2 L1 X1 X2 X3 X4 KM3 KM4 UA M2 UB S1: Emergency Stop Switch S2, S7: Reset switches S3: Enabling Switch S4: Guard lock Safety-door Switch S5: Lock release switch S6: Safety limit switch S8: A22TK Safety Key Selector Switch KM1 to KM4: Contactors M1 to M2: 3-phase motor PLC etc. Indicator (Diagnostic check enabled) GND Indicator (Diagnostic check enabled) Timing Chart <G9SX-BC202(Unit 1)> (10) Emergency Stop Switch S1 Reset switch S2 Unit 1 S14, S24 KM1, KM2 NC contact KM1, KM2 NO contact Unit 1 Logical AND output L1 <G9SX-GS226-T15(Unit 2)> Unit 2 Logical AND input T41 Lock release switch (3) (8) S5 Guard lock S4 safety-door switch (4) (6) Enabling Switch S3 (1) (5) Reset switch S7 (2) Mode selection input M1 Mode selection input M2 Unit 2 S14, S24 KM3, KM4 NC contact KM3, KM4 NO contact 9 (7) (9) (1) The G9SX-GS starts in operation mode. (2) The mode switches to maintenance mode. (3) The operator opens the guard and performs maintenance work. (4) The Enabling Switch is gripped to the middle position. (5) The G9SX-GS starts in maintenance mode. (6) The G9SX-GS will stop when the Enabling Switch is released or gripped. (7) The G9SX-GS will start again after the guard is closed and the mode is switched to operation mode. (8) The G9SX-GS will stop and the guard can be opened when the stop signal is input while in operation mode. (9) The guard is closed and the G9SX-GS starts again. (10)All the units will stop if the emergency stop is pressed. A22TK ●Application Overview (1) In normal operation mode, the power supply to the motor M is turned ON when the reset switch S7 is pressed while the rotator is stopped and the guard is locked after closed. (2) The PLC sends high speed rotation command to the motor controller. (3) The stop signal is applied with the S8. (4) The PLC sends deceleration command to the motor controller. (5) The guard can be unlocked when the rotator slows down to the safe speed. (6) The power supply to the motor M is turned OFF when the guard is unlocked with the S5. (7) The mode switches to maintenance mode with the mode selection switch. (8) The PLC sends low speed rotation command to the motor controller. (9) The power supply to the motor M is automatically turned ON again by gripping the enabling switch to the middle position. (10)The operator opens the guard and performs maintenance work. ●Evaluation example PL/safety category Model Stop category Reset − − Safety Key Selector Switch A22TK-2@@-11 (SPST-NO/SPST-NC type) Guard lock Safety-door Switch D4NL-@A@A-@, -@A@B-@, -@A@C-@ (Mechanical Lock Type) Enabling Grip Switch A4EG Low-speed Monitoring Unit G9SX-LM224-F10-R@ Flexible Safety Unit G9SX-BC202 (24 VDC) PLd/3 equivalent Note: The above PL is only the evaluation result of the example concerning solely the mode selection. The PL must be evaluated in an actual application by the customer after confirming the usage conditions. ●Circuit Diagram Lock release switch S5 E1 S4 Guard lock Safety-door Switch E2 Emergency Stop Switch S1 11 21 12 22 41 42 +24V 12 S2 Open A1 T11 T12 T21 T22 T31 T32 T33 Y1 11 G9SX-BC202 S7 Enabling Switch Control circuit Feedback loop Guard 11 A2 KM1 S3 open S14 S24 L1 L2 X1 X2 12 PLC etc. KM2 S8 +24V Stop signal S6 Selector Switch A22TK +24V Open A1 T11 T12 T21 T22 Y1 Open M1 M2 T61 T62 T71 T72 Y2 T31 T32 T33 T41 T42 G9SX-LM224-F10 AND Control circuit OFF A2 S14 S24 ES1 ES2 L1 X1 X2 X3 X4 Motor controller D11 D12 D21 D22 KM1 KM2 Brown Black Brown Black +24V KM1 KM2 Indicator Blue M S1: Emergency Stop Switch S2: Reset switch S3: Safety limit switch S4: Guard lock Safety-door Switch S5: Lock release switch S6: A22TK Safety Key Selector Switch S7: Enabling switch S8: Stop signal KM1, KM2: Contactor M: 3-phase motor GND Rotator (interlocked with M) Timing Chart Emergency Stop Switch S1 Reset switch S2 Logical AND output L1 Guard closed --> opened Safety limit switch S3 Guard lock Safety-door Switch S4 KM1, KM2 NC contact KM1, KM2 NO contact (Operation instruction to the motor) High speed rotation Motor rotation Low speed rotation Lock release signal (Safe speed detection output) ES1 Lock release switch S5 Guard can be opened. Mode selection input M1 Mode selection input M2 Enabling Switch S7 10 A22TK Installation Mounting to the Panel (1) Preparing the Panel (3) Mounting the Switch on the Operation Unit • The panel dimensions are shown below. • Recommended panel thickness: 1 to 5 mm. 3.2 +0.2 0 • Insert the Operation Unit into the Switch Unit, aligning the arrow mark inscribed on the Case with the lever on the Switch Blocks, then move the lever in the direction indicated by the arrow in the following figure. 2-R0.8MAX. Lever 24.1 +0.4 0 Switch Unit Arrow mark 22.3+0.40 dia. • A Lock Ring is provided as a standard feature. • When painting or coating the panel, make sure that the specified panel dimensions apply to the panel after painting or coating. Operation Unit (2) Mounting the Operation Unit on the Panel (4) Removing the Switch • Insert the Operation Unit from the front surface of the panel, insert the Lock Ring and the mounting ring from the terminal side, then tighten the ring. Before tightening, check that the rubber washer is present between the Operation Unit and the panel. • Tighten the mounting ring at a torque of 0.98 to 1.96 N·m. • When using a Lock Ring, insert the projecting part into the lock slot, and then tighten the mounting ring. • Move the lever in the direction indicated by the arrow in the following figure, then pull the Operation Unit or the Switch Blocks. Since the lever has a hole with an inside diameter of 6.5 mm, the lever can be moved in the specified direction by inserting a screwdriver into the hole and then moving the screwdriver. Key Operation Unit Arrow mark Projecting part Mounting ring OPEN Rubber washer 22+0.4 0 dia. Panel LOCK 22 dia. Screwdriver 24.1+0.4 0 Lock Ring Installing/Removing the Switch Blocks (1) Installing the Switch Blocks (2) Removing the Switch Blocks Wiring • Hook the small protrusion on the Mounting Latch into the groove on the other side of the lever, then push up the Switch Block in the direction indicated by the arrow in the figure below. • Insert a screwdriver between the Mounting Latch and the Switch Block, then push down the screwdriver in the direction indicated by the arrow in the following figure. • Loosen the terminal screw from the Switch Unit until it completely comes off the groove, insert a screwdriver as shown in the following figure, then push up the washer in the direction indicated by the arrow to temporarily secure it. Now, a round crimp terminal can be connected. After inserting the terminal, tighten the screws to complete wiring. Washer Lever Mounting Latch Screwdriver Screw Screwdriver Protrusion Switch block Use either of the following screwdrivers. Flat-head screwdriver 3 to 6 mm Phillips screwdriver 3 to 6 mm dia. 11 A22TK Safety Precautions Be sure to read the precautions for All Pushbutton Switches in the website at:http://www.ia.omron.com/. Indication and Meaning for Safe Use DANGER Indicates an imminently hazardous situation which, if not avoided, is likely to result in serious injury or may result in death. Additionally there may be severe 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, or undesirable effect on product performance. DANGER Always confirm that safety functions are operational before stating operation. Wiring mistakes, setting mistakes, switch failure or other factors may prevent safety functions from operating. This may result in the machine continuing to operate, possibly resulting in human accidents. CAUTION If the Operation Unit is separated from the Socket Unit, the equipment will not stop, creating a hazardous condition. Secure the lever on the Socket Unit by using the A22Z3380 Lock Plate so that the Operation Unit cannot be easily separated from the Socket Unit. (Refer to “Mounting the Lock Plate” at the right.) [Used in combination with a Slide Key] The machine may operate, possibly causing injury. Do not disable safety function by using a spare door switch operation key or spare key with the door open. [Used outside/inside hazardous area] The machine may operate, possibly causing injury. Do not disable safety function by using a spare key outside or inside the hazardous area. Precautions for Safe Use Installation Environment • Do not use the switch in locations where explosive or flammable gasses may be present. • Do not use the switch submerged in oil or water or in locations continuously subject to splashes of oil or water. Doing so may result in oil or water entering the switch. Wiring • Connect a fuse in series with the A22TK to protect it from shortcircuit damage. The value of the breaking current of the fuse must be calculated by multiplying the rated current by 150% to 200%. When using the A22TK for an EN rating, use a 10-A fuse of type gI or gG that complies with IEC 60269. • Always make sure that the power is turned OFF before wiring the Switch. Also, do not touch the terminals or other current-carrying ports while power is being supplied. • Check the contact specifications before mounting the Switch Block. Use an NC contact for a safety circuit. It may not operate properly. Check the Switch Block for safe operation before use. • Check the operating specification before mounting the Operation Unit. It may not operate properly. Check the Operation Unit for safe operation before use. Installation • Do not drop the Switch. Doing so may prevent the Switch from functioning to its full capability. • Make sure the Switch is mounted securely to prevent it from falling off. Otherwise injury may result. • Mount the Operation Key so that it will not come into contact with persons in the area when the door is opened and closed. Injury may result. • Do not use a Switch as a stopper. Otherwise, the switch may be damaged and may not operate properly. • Be sure to use the supplied Lock Ring. Otherwise, the switch may rotate and may not operate properly. Others • Do not attempt to disassemble or modify the Switch. Doing so may cause the Switch to malfunction. • The durability of the Switch is greatly influenced by the switching conditions. Always test the switch under actual working conditions before application and use it in a switching circuit for which there are no problems with performance. • The user must not maintain or repair equipment incorporating the Switch. Contact the manufacturer of the equipment for any maintenance or repairs required. 12 A22TK Wiring Precautions for Correct Use Operating Environment • This Switch is designed for use indoors. Using the Switch outdoors may damage it. • Do not use the Switch where corrosive gases (e.g., H2S, SO2, NH3, HNO3, or CI2) are present or in locations subject to high temperature and humidity. Doing so may result in damage to the Switch as a result of contact failure or corrosion. • Do not use the Switch in any of the following locations. • Locations subject to extreme temperature changes • Locations subject to high humidity or condensation • Locations subject to excessive vibration • Locations where metal dust, processing waste, oil, or chemicals may enter through the protective door • Locations subject to detergents, thinners, or other solvents Storage • Do not store the Switch where corrosive gases (e.g., H2S, SO2, NH3, HNO3, or Cl2) or dust is present, or in locations subject to high temperature or high humidity. Mounting • Do not tighten the mounting ring more than necessary using tools such as pointed-nose pliers. Doing so will damage the mounting ring. The tightening torque is 0.98 to 1.96 N·m. • Recommended panel thickness: 1 to 5 mm. Mounting the Lock Plate 1. Confirm that the lever on the Mounting Latch is on the side where the Operation Unit is secured and then insert the protrusion on the Lock Plate into the hole in the lever on the Mounting Latch. 2. Press the hole on the Lock Plate onto the protrusion on the Mounting Latch until it clicks into place. After mounting the Lock Plate, check that the lever does not move. Lock Plate Lever 2. 1. OPEN LOCK Operation Unit Mounting Latch Operating the Key • When rotating the key to the total travel position or free position, the operating force must be 1.47 N·m max. • Terminal screws must be Phillips or slotted M3.5 screws with a square washer. • The tightening torque is 1.08 to 1.27 N·m. • Single wires, stranded wires, and crimp terminals can be connected to the Switch • Applicable Wiring Materials: Twisted strands: 2 mm2 max. Solid wire: 1.6 mm dia. max. Naked Crimp Terminals 8 mm max. 16.0 mm max. Crimp Terminals with Insulating Sheaths 8 mm max. 8 mm dia. max. 16.0 mm max. 8 mm dia. max. 20.2 mm max. 20.2 mm max. • After wiring the Switch, maintain an appropriate clearance and creepage distance. • Do not pull the lead wires with excessive force. Doing so may disconnect them. • The cable cannot be bended repeatedly. • When bending the cable, provide a bending radius of 45 mm min. so as not to damage the cable insulation or sheath. Excessive bending may cause fire or leakage current. Operating Environment • The IP65 model is designed with a protective structure so that it will not sustain damage if it is subjected to water from any direction to the front of the panel. • The Switch is intended for indoor use only. Using the Switch outdoor may cause it to fail. Using the Microload Contact failure may occur if a Switch designed for a standard load is used to switch a microload. Use Switches within the application ranges shown in the following graph. Even within the application range, insert a contact protection circuit, if necessary, to prevent the reduction of life expectancy due to extreme wear on the contacts caused by loads where inrush current occurs when the contact is opened and closed. The minimum applicable load is the N-level reference value. This value indicates the malfunction reference level for the reliability level of 60% (λ 60) (conforming to JIS C5003). The equation, λ 60 = 0.5 x 10-6/time indicates that the estimated malfunction rate is less than 1/2,000,000 with a reliability level of 60%. Voltage (V) 0.16mA 100mA 1.6mA 30 24 Microload area Area of use Standard load area 12 Invalid area 5 1mA 10mA 1 10 0 0.1 100 1,000 Current (mA) 13 A22TK Others • If the panel is to be coated, make sure that the panel meets the specified dimensions after coating. • Due to the structure of the Switch, severe shock or vibration may cause malfunctions or damage to the Switch. Also, most Switches are made from resin and will be damaged if they come into contact with sharp objects. Particularly scratches on the Operation Unit may create visual and operational obtrusions. Handle the Switches with care, and do not throw or drop them. Do not allow the Switch to drop and hit the floor. Do not place or drop heavy objects on the Switch. Do not operate the Switch with hard or sharp objects. Hammer Screwdriver • Perform maintenance inspections periodically. • Do not use the key switch to stop/start the machine. • Mode switching by key must be performed by the operator specified in the operating manual. • Apply load current not to exceed the rated value. • The contact ON/OFF timing is not synchronized. Confirm performance before application. 14 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 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 product. At the customer’s request, OMRON will provide applicable third party certification documents identifying ratings and limitations of use that apply to the products. This information by itself is not sufficient for a complete determination of the suitability of the products in combination with the end product, machine, system, or other application or use. The following are some examples of applications for which particular attention must be given. This is not intended to be an exhaustive list of all possible uses of the products, nor is it intended to imply that the uses listed may be suitable for the products: • Outdoor use, uses involving potential chemical contamination or electrical interference, or conditions or uses not described in this document. • Nuclear energy control systems, combustion systems, railroad systems, aviation systems, medical equipment, amusement machines, vehicles, safety equipment, and installations subject to separate industry or government regulations. • Systems, machines, and equipment that could present a risk to life or property. Please know and observe all prohibitions of use applicable to the products. 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 PRODUCT IS PROPERLY RATED AND INSTALLED FOR THE INTENDED USE WITHIN THE OVERALL EQUIPMENT OR SYSTEM. Disclaimers 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 model 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 model numbers may be assigned to fix or establish key specifications for your application on your request. Please consult with your OMRON representative at any time to confirm actual specifications of purchased products. DIMENSIONS AND WEIGHTS Dimensions and weights are nominal and are not to be used for manufacturing purposes, even when tolerances are shown. ERRORS AND OMISSIONS The information in this document has been carefully checked and is believed to be accurate; however, no responsibility is assumed for clerical, typographical, or proofreading errors, or omissions. 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. PROGRAMMABLE PRODUCTS OMRON shall not be responsible for the user’s programming of a programmable product, or any consequence thereof. Copyright and Copy Permission COPYRIGHT AND COPY PERMISSION This document shall not be copied for sales or promotions without permission. This document is protected by copyright and is intended solely for use in conjunction with the product. Please notify us before copying or reproducing this document in any manner, for any other purpose. If copying or transmitting this document to another, please copy or transmit it in its entirety. 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 SCIENTIFIC TECHNOLOGIES INC. 6550 Dumbarton Circle, Fremont CA 94555-3605 U.S.A. Tel: (1) 510-608-3400/Fax: (1) 510-744-1442 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 2009 All Rights Reserved. In the interest of product improvement, specifications are subject to change without notice. CSM_7_1_0515 Printed in Japan Cat. No. A189-E1-01 0409