Buffer Block S8T-DCBU-02 CSM_S8T-DCBU-02_DS_E_8_1 Prevents Equipment Stoppage, Data Loss, and Other Problems Resulting from Momentary Power Failures • Provides a backup time of 500 ms at an output current of 2.5 A. • Can be wired to the 24-V output from the S8VS Supplies. • Connects to an S8TS Power Supply via an S8T-BUS03 Bus Line Connector. • Parallel connections to up to four Blocks can be used to increase the backup time and current capacities. • Complies with SEMI F47-0200 standard. • RoHS-compliant • Ambient operating temperature range of –20 to 60°C. S8T-DCBU-02 S8TS ! For the most recent information on models that have been certified for safety standards, refer to your OMRON website. Refer to Safety Precautions for All Power Supplies and Safety Precautions on page 16. Ordering Information ■ Buffer Block Input voltage Output voltage (during backup operation) 24 VDC (24 to 28 VDC) 22.5 V Output current 2.5 A Model number S8T-DCBU-02 ■ Options (Order Separately) Bus Line Connector (Connects to Buffer Block) Type Number of Connectors Connector with DC line connected. Model number 1 Connector S8T-BUS03 10 Connectors (See note.) S8T-BUS13 Note: One package contains 10 S8T-BUS03 Connectors. Basic Configuration Connecting to the S8TS-06024@ Connection via Wiring Connect to AC lines. Connect to AC lines. S8TS-06024@ (Order separately.) S8T-BUS03 Bus Line Connector (Order separately.) S8T-DCBU-02 Load Load 1 S8T-DCBU-02 Specifications ■ Ratings/Characteristics Item Input S8T-DCBU-02 24 to 28 VDC Charging 0.4 A Standby 0.18 A Output Backup Output voltage For 24 V: 22.5 V typ., 22.0 V min. (See note 1.) operation For 28 V: 26.4 V typ., 25.8 V min. Output current 2.5 A Backup time Time required until the voltage drops from the fully charged level down to 21.6 VDC (See note 2.) 1,000 ms min. (for an output current of 1.2 A) 500 ms min. (for an output current of 2.5 A) Additional Output READY indicator Yes (color: green) functions functions READY output Yes (relay: 24 VDC, 0.1 A max.) (See note 3.) Backup indictor Yes (color: red) Backup output Yes (relay: 24 VDC, 0.1 A max.) Overcurrent protection Reverse-L dropping, automatic reset, overcurrent detection point: 5.8 to 6.8 A Overvoltage protection Yes Parallel operation Yes (Up to 4 Blocks) Series operation No Other Ambient operating temperature Refer to the derating curve in Engineering Data. (with no condensation or icing) Storage temperature −25 to 65°C Ambient humidity Operating: 25% to 85%; Storage: 25% to 90% Dielectric strength (See note 4.) 1.0 kVAC for 1 minute (between all DC connection terminals and PE terminals; Detection current: 20 mA) 500 VAC for 1 minute (between all DC connection terminals/PE terminals and all signal output terminals; detection current: 20 mA) Insulation resistance 100 MΩ min. (between all DC connection terminals and PE terminals) at 500 VDC Vibration resistance (See notes 5 and 6.) 10 to 55 Hz, 0.375-mm single amplitude for 2 h each in X, Y, and Z directions Shock resistance (See notes 5 and 6.) 150 m/s2, 3 times each in ±X, ±Y, and ±Z directions EMI Conducted Emission Conforms to EN61204-3 EN55011 Class B and based on FCC Class A (See note 5.) Radiated Emission Conforms to EN61204-3 EN55011 Class B EMS Conforms to EN61204-3 High severity levels UL508 (Listing; Class 2: Per UL1310) (See note 7.), UL60950-1 Approved UL: CSA C22.2 No.14 (Class 2: Per No. 223) (See note 7.), standards cUL: CSA No. 60950-1 cUR: EN50178 (= VDE0160), EN60950-1 (= VDE0805 Teil 1) EN/VDE: SEMI SEMI F47-0200 Weight 450 g max. Note: 1. 2. 3. 4. 5. 6. 7. Model Voltage Current The output characteristics are specified at the power output terminals. Refer to Backup Time on page 10 for details. Refer to Functions on page 7 for details. If the number of S8T-DCBU-02 Buffer Blocks to be connected is “N,” set the detection current to 20 mA × N. Specified by S8TS-06024@ connection. Be sure to mount an End Plate (PFP-M: Order separately) on each end of the Buffer Block. Refer to DIN Rails on page 15. To comply with Class 2, connect one S8TS-06024@ to one S8T-DCBU-02 Buffer Block. ■ Reference Value Item Reliability (MTBF) Value Definition 135,000 hrs MTBF stands for Mean Time Between min. Failures, which is calculated according to the probability of accidental device failures, and indicates reliability of devices. Therefore, it does not necessarily represent a life of the product. Life 10 yrs. min. The life expectancy indicates average opexpectancy erating hours under the ambient temperature of 40°C and a load rate of 50%. Normally this is determined by the life expectancy of the built-in aluminum electrolytic capacitor. 2 S8T-DCBU-02 Connections ■ Block Diagram S8T-DCBU-02 +V DC input/output −V Reverse connection protection Reverse flow prevention diode Discharging circuit Electrolytic capacitor Reverse connection protection + Charging circuit − Drive circuit Detection resistor Drive circuit Discharging control circuit Charging control circuit Voltage detection 1 Overvoltage detection Voltage detection 2 Overcurrent detection Voltage detection Voltage detection BACKUP output BACKUP status detection Voltage detection READY output Voltage detection Connected to DC (+) Bus Line Connector DC (−) Connected to Bus Line Connector Operation ■ Application Connectable Power Supplies The following Power Supplies can be connected. When connected to the following Power Supplies, the Buffer Block will function properly against a momentary power failure of at least 300 ms. (See note 1.) 2. When connected to the S8VS-06024, S8VS-12024, S8VS-18024, S8VS-24024, or S82J-10024@@ Power Supply, the output voltage may increase by approximately 4 V for several 10 s of milliseconds after recovery from the momentary power failure. If any adverse effect is foreseen, connect a diode as shown below based on the guidelines given below. S8TS Series: S8TS-06024@ S8VS Series: S8VS-01524, S8VS-03024, S8VS-06024 (See note 2.), S8VS-06024A/B, S8VS-09024, S8VS-09024S, S8VS-09024A@/B@, S8VS-12024 (See note 2.), S8VS-12024A@/B@, S8VS-18024 (See note 2.), S8VS-18024A@/B@, S8VS-24024 (See note 2.), S8VS-24024A@/B@, and S8VS-48024A/B S8JX Series: S8JX-N01524@@, S8JX-N03024@@, S8JX-N05024@@, S8JX-N10024@@, S8JX-N15024@@, S8JX-N30024@@, S8JX-N60024@@ S8VM Series:S8VM-01524@@, S8VM-03024@@, S8VM-05024@@, S8VM-10024@@, S8VM-15024@@, S8VM-30024C, S8VM-60024C, and S8VM-15224C Note: 1. The backup current must be less than 5 A (parallel operation connection is required if the backup current exceeds 2.5 A) and the Buffer Block must be fully charged. If three or more S8T-DCBU-02 Buffer Blocks are used in parallel operation and the backup current exceeds 5 A, the momentary power failure time that can be compensated for will be reduced. AC input 4V I/O terminal voltage Guidelines for Selecting Diode Type: Schottky barrier diode Withstanding voltage (VRRM): At least twice the rated output voltage Forward current (IF): At least twice the rated output current S8T-DCBU-02 Power Supply − + Diode 3 S8T-DCBU-02 Power Supply To Be Connected The power consumption of the S8T-DCBU-02 is approximately 10 W, so make sure that the output capacity of the connected Power Supply is sufficient. If the S8T-DCBU-02 is connected to a previously installed power supply, the voltage may drop due to the power supply's overload protection, or backup operations may not be possible. Note: Connect a Power Supply within the specified derating range, considering the power consumption of the S8T-DCBU-02. Selecting the Power Supply Determining the Output Capacity Check capacities of devices to be connected. Calculate the total of these capacities. Calculate the required capacity. Selecting the Power Supply Check the output hold time and restart time. Select an appropriate Power Supply. Check the derating curve. 3. Calculating the Required Output Capacity Determine the rate of allowance and apply this allowance rate to the total capacity calculated above to obtain the output capacity required by the Power Supply. Be sure to provide a sufficient allowance rate. Calculation of the Total Power Supply Capacity Required Total output capacity capacity ÷ > (W) of the (W) Power Supply Allowance rate Example: Output voltage: 24 V Capacities of devices: 36 W (output current: 1.5 A) Allowance rate: 0.8 Required output capacity of the Power Supply > (36 W + 9.6 W) ÷ 0.8 = 57 W Therefore, an S8TS-06024@ Power Supply, S8VS-06024@ Power Supply, or a Power Supply with a larger capacity is required. Selecting the Power Supply To Be Connected 1. Checking the Output Hold Time and Restart Time of the Connected Power Supply The relation between the momentary power failure time and the backup time required to compensate the failure is shown in the following illustration. As shown by the illustration, the backup time required from the S8T-DCBU-02 Buffer Block depends on the connected Power Supply even for the same momentary power failure time. Calculation of the Required Backup Time Required backup time > Momentary power failure time Restart time of Power Supply + Output hold − time of Power Supply Relation between Momentary Power Failure and Backup Time Momentary power failure time Determining the Output Capacity 1. Checking Capacities of Devices To Be Connected AC input Check the capacities (W) of the devices to be connected. I/O terminal voltage 2. Calculating the Total Capacity (Including That of the S8T-DCBU-02 Buffer Block) The S8T-DCBU-02 Buffer Block will consume the following power. Add this to the above capacities (W) of the devices to be connected to obtain the total capacity. Vin = 24 V: 9.6 W max. (during charging) Vin = 28 V: 11.2 W max. (during charging) Calculation of the Total Capacity Total capacity = (W) Capacities of devices (W) + Power consumption (W) of the S8T-DCBU-02 Output hold time of Power Supply Backup time Restart time of Power Supply The output hold time and restart time of each Power Supply are shown in Power Supply Output Hold Times (Reference Values) on page 12 and Power Supply Restart Times (Reference Values) on page 13. Example: S8T-DCBU-02: 1 Unit Connected Power Supply: S8TS-06024@ Load current: 1 A AC input voltage: 200 VAC Assumed momentary power failure time: 300 ms Required backup time > 300 ms + 270 ms - 100 ms = 470 ms Refer to the graphs under Backup Time on page 10 to check whether the backup time is sufficient. 2. Selecting the Power Supply After obtaining the output capacity required for the Power Supply and checking its output hold time and restart time as described above, select an appropriate Power Supply from the list under Connectable Power Supplies on page 3. 3. Checking the Derating Curve Confirm that the total output capacity calculated in step 2, Calculating the Total Capacity, under Determining the Output Capacity is within the derating curve of the Power Supply. If the capacity exceeds the derating curve, increase the Power Supply capacity or use forced air cooling to reduce the ambient operating temperature. 4 S8T-DCBU-02 Mounting Input Voltage Mounting Direction Input voltage range: 24 to 28 VDC Standard mounting Yes Face-up mounting No Other mounting No Confirm that an input voltage of at least 24 V is being supplied to the S8T-DCBU-02 input terminals. Output Voltage Improper mounting will interfere with heat dissipation and may occasionally result in deterioration of or damage to internal parts. Use standard mounting only. Standard mounting Correct Face-up mounting Incorrect The output voltage for the backup operation is automatically adjusted internally by detecting the input voltage. The backup operation is started when the input voltage drops 2 V. Note: The output voltage during the backup operation is a maximum of 2 V lower than the voltage input at an input voltage of 24 VDC. Serial Connection Two Blocks cannot be connected in series to increase the output voltage to 48 V or to create positive and negative outputs. Parallel Connection Connecting to the S8TS-06024@ When connecting one or more S8T-DCBU-02 Blocks to the S8TS-06024@ using Bus Line Connectors, connect them to either the left or right end of the Blocks. Heat dissipation will be interfered with if the S8T-DCBU-02 Blocks are not connected to the end. Correct S8T-DCBU-02 L N L INPUT N OUTPUT DC24V 2.5A +V OUTPUT V.ADJ DC LOW DC24V 2.5A -V +V L 50/60Hz AC100 -240V 1.0A L N N +V -V DC ON DC LOW +V DC LOW OUTPUT V.ADJ DC24V 2.5A -V Class2 Power Supply DC LOW OUTPUT V.ADJ DC24V 2.5A -V DC ON Class2 Power Supply DC LOW OUTPUT V.ADJ DC LOW +V -V Class2 Power Supply +V When connecting the S8T-DCBU-02 with a Bus Line Connector, use the S8T-BUS03 Bus Line Connector, which connects only the DC lines. (The AC lines are not connected.) If the backup current exceeds 5 A when three or more Buffer Blocks are connected in parallel, the backup time will be greatly reduced. Refer to Backup Time on page 10 for details on the backup time during parallel operation. N INPUT 50/60Hz AC100 -240V 1.0A +V DC ON Class2 Power Supply DC LOW N INPUT L N -V DC ON -V L 50/60Hz AC100 -240V 1.0A +V -V Class2 Power Supply V.ADJ N INPUT L N +V DC LOW S8T-DCBU-02 50/60Hz AC100 -240V 1.0A L N -V DC ON Incorrect L INPUT 50/60Hz AC100 -240V 1.0A L DC LOW Correct S8T-DCBU-02 The output current and backup time for the backup operation can be increased by connecting Buffer Blocks in parallel. Maximum number of Buffer Blocks for parallel operation: 4 DC LOW DC24V 2.5A -V +V Note: Although the number of Buffer Blocks that can be connected when using the S8TS-06024@ is five when calculated from the current capacity of the Bus Line Connector, only a maximum of four S8T-DCBU-02 can actually be connected in parallel. Connecting to S8TS-06024@ Wiring Connections When connecting to the S8TS-06024@, always use the S8T-BUS03 Bus Line Connector. This Connector connects only the DC lines. It does not connect AC lines. A load can be connected to either the Power Supply side or the S8T-DCBU-02 side. S8T-BUS03 Bus Line Connector S8TS-06024@ L N S8TS-06024@ L N INPUT INPUT 50/60Hz AC100 -240V 1.0A 50/60Hz AC100 -240V 1.0A L L N N +V +V -V -V DC ON DC ON Class2 Power Supply DC LOW OUTPUT V.ADJ DC LOW The S8T-BUS03 Bus Line Connector is equipped with a selector to prevent incorrect connection to a power supply unit with a different output voltage specification. Slide the selector to the 24 V position. DC24V 2.5A -V +V Class2 Power Supply DC LOW OUTPUT V.ADJ DC LOW DC24V 2.5A -V +V Selector Note: Use the largest wire size possible and keep the wiring distance as short as possible. If the voltage drop caused by the wiring material is too large, the backup operation may not be sufficient. 5 S8T-DCBU-02 Inserting and Removing the Bus Line Connector Operation Check and Periodic Inspection H5CX-A Digital Timer Pay attention to the following points to maintain electric characteristics. • Do not insert and remove a Bus Line Connector more than 20 times. • Do not touch the Bus Line Connector terminals. • To remove a Bus Line Connector, insert a flat-blade screwdriver alternately at both ends. SW E mode: Set for NPN input. 6 7 8 9 10 Not used Not used Not used 11 12 13 1 2 3 4 5 AC Mounting to DIN Rail To mount the Buffer Block to DIN Rail, hook portion (A) of the Buffer Block onto the Rail and press the Buffer Block in direction (B). (A) Load 4. Check to confirm that the expected backup operation was performed. The operation of the BACKUP indicator and BACKUP output should be as shown below during the backup operation. Check these as well. (B) To dismount the Buffer Block, pull down portion (C) with a flat-blade screwdriver and pull out the Buffer Block. BACKUP Indicator BACKUP output relay 3 BACKUP 4 Indicator lit (BACKUP: Red) 30 mm min. (C) Relay (BACKUP) (3)-(4): closed Note: Check the backup operation under conditions that are safe and will cause no problems if the backup operation fails. Rail stopper Checking Operation and Periodic Inspection After connecting the Buffer Blocks, check the Buffer Block using the following procedure to confirm that it operates correctly for momentary power failures on the AC input. Use this procedure for periodic inspection as well. 1. Turn ON the AC power of the connected power supply. 2. Check the READY indicator on the S8T-DCBU-02 to confirm that it is lit. READY Indicator READY output relay 1 READY 2 Indicator lit (READY: Green) Relay (READY) (1)-(2): open Note: Up to 60 seconds is required to charge the internal capacitor before the indicator lights. 3. Use a timer and create a momentary power failure on the AC input of the expected length of time. Considering variations in characteristics, using 140% or more of the power failure time is recommended. 6 S8T-DCBU-02 ■ Functions The READY indicator and READY output will function as shown below when the internal capacitor is being charged. READY Indicator READY Operation The READY indicator and READY output will function as shown below after the internal capacitor is completely charged and the Buffer Block is ready to perform the backup operation. Up to 60 seconds is required for the capacitor to charge completely. READY Indicator READY output relay 1 READY 2 Indicator lit (READY: Green) Relay (READY) (1)-(2): open The following status will occur if there is an error in the charge voltage of the internal capacitor or the output voltage of the S8T-DCBU-02. READY Indicator READY output relay 1 READY 2 Indicator not lit (READY: Green) Relay (READY) (1)-(2): closed The backup operation will not be sufficient or will fail under the above status. If this status occurs, immediately remove the cause of the error, such as the following causes. 1. The connected DC voltage is 23 V or less. 2. The terminals have been connected in reverse, a wire is broken, or wiring is otherwise not correct. 3. The overvoltage protection circuit has operated. 4. The overcurrent protection circuit of the connected power supply has operated. Note: The contact capacity of the output relay is 0.1 A at 24 VDC. Backup Operation The S8T-DCBU-02 will switch to the backup operation if a voltage drop is detected on the connected power supply. BACKUP Indicator READY output relay 1 READY 2 Indicator not lit (READY: Green) Relay (READY) (1)-(2): closed Note: 1. The contact capacity of the output relay is 0.1 A at 24 VDC. 2. The backup operation may be repeatedly performed if the connected power supply is overloaded. Remove the cause of the overload immediately. 3. The backup operation does not detect drops in the AC input. Overload Protection The S8T-DCBU-02 is provided with an overload protection function that protects the Power Supply from possible damage due to shortcircuits and overcurrents by automatically decreasing the output if the overcurrent reaches 5.8 to 6.8 A. When the output current falls within the rated range, the overload protection function is automatically cleared. Note: Internal parts may occasionally deteriorate or be damaged if a short-circuited or other overcurrent state continues during operation. Overvoltage Protection If a voltage that is higher than the specified input voltage range is input or the output voltage exceeds the specified voltage, the overvoltage protection circuit will operate at between 31 and 36 V to shut OFF the output voltage and protect the load from damage due to overvoltages. To reset the Buffer Block, turn OFF the input power for at least 1 minute and then turn it back ON. Note: 1. Remove the cause of the overvoltage before turn the input power back ON. 2. The backup operation will not be performed when the overvoltage protection is performed to shut OFF the output. Reverse Connection Protection The S8T-DCBU-02 will be protected even if the positive and negative I/O terminals are connected in reverse. BACKUP output relay 3 BACKUP 4 Indicator lit (BACKUP: Red) Relay (BACKUP) (3)-(4): closed When the backup operation functions, the energy in the internal capacitor will be discharged to the load. When the voltage of the power supply then recovers, the S8T-DCBU-02 will start charging the capacitor. Up to 60 seconds is required to charge the capacitor completely. The backup operation may therefore not function for the required period if the backup operation starts while the capacitor is being charged. The following are examples in which the backup operation may not be sufficient. 1. The backup operation starts within 60 seconds after turning ON the power. 2. The backup operation is started consecutively within 60 seconds of the previous backup operation. 3. A rapid change in the load or other factor causes the DC voltage to drop, resulting in the backup operation, and then the backup operation occurs again within 60 seconds. 7 S8T-DCBU-02 Nomenclature Buffer Block S8T-DCBU-02 8 7 1 2 3 4 5 6 13 14 12 9 10 11 14 A, B: READY Output: NC contact I: Protective Earthing Terminal ( C, D: BACKUP Output: NC contact J: I/O Terminal (−V) E: READY Indicator (READY: Green) K: I/O Terminal (+V) F: BACKUP Indicator (BACKUP: Red) L: Rail Stopper G: NC M: Connecting part of Bus Line Connector H: Slider N: Terminal Cover ) Bus Line Connector S8T-BUS03 A: Selector B: Bus Line Connector terminal C: NC D: DC Bus Line Connector Terminal (+V) E: DC Bus Line Terminal (−V) 8 S8T-DCBU-02 Engineering Data Current during backup operation (A) ■ Derating Curve Note: 1. If natural air circulation is limited, use the forced air cooling to prevent overheating. 2. The ambient temperature is measured at a point 50 mm below the Buffer Block. 3. Check the derating curve for each power supply to be connected. Refer to Connections to the S8TS (Reference Values) on page 11 for details on the derating curves when connecting the Buffer Block to the S8TS-06024@. 2.5 2.0 1.5 1.0 0.5 −30 −20 −10 0 10 20 30 40 50 60 70 80 Ambient temperature (°C) ■ Time Charts Momentary Power Failure or Instantaneous Voltage Drop Startup AC input AC input Internal capacitor voltage Internal capacitor voltage I/O terminal voltage I/O terminal voltage Output current of the S8T-DCBU-02 Output current of the S8T-DCBU-02 open READY output open READY output closed closed READY indicator READY indicator open BACKUP output open BACKUP output closed closed BACKUP indicator BACKUP indicator Power supply output hold time Backup time Charging time Power supply restart time Power Supply Interrupted or Stopped AC input Internal capacitor voltage I/O terminal voltage Output current of the S8T-DCBU-02 open READY output closed READY indicator 2 seconds (typical) open BACKUP output closed BACKUP indicator Backup time 9 S8T-DCBU-02 ■ Backup Time Parallel Operation with 2 Blocks 10 Vin = 28 V typical Vin = 24 V typical Backup time (s) Backup time (s) Single Operation 10 Vin = 24 V typical Vin = 24 V guarantee Vin = 24 V guaranteed 1 1 0.1 0.1 0.0 0.5 1.0 1.5 2.0 0.0 2.5 1.0 2.0 3.0 10 Vin = 24 V typical 5.0 Parallel Operation with 4 Blocks Backup time (s) Backup time (s) Parallel Operation with 3 Blocks 4.0 Load current (A) Load current (A) 10 Vin = 24 V typical Vin = 24 V guaranteed Vin = 24 V guaranteed 1 1 0.1 0.1 0.0 1.5 3.0 4.5 6.0 7.5 Load current (A) 0.0 2.0 4.0 6.0 8.0 10.0 Load current (A) Note: 1. The backup time may be reduced if a fixed power load (such as a DC-DC converter) is connected. 2. If the input voltage increases, the output voltage for the backup operation will also increase, reducing the backup time due to the higher power consumption of the load. 10 S8T-DCBU-02 ■ Connections to the S8TS (Reference Values) Derating Curves of the S8TS-06024@ When Connecting to the S8T-DCBU-02 *1 100 to 120 VAC 1 *2 50 W 50 W 100 to 120/200 to 240 VAC 1 *3 44 W 110 W 1 *4 2 (+1) 1 *5 98 W 3 1 *6 170 W 3 (+1) 1 *7 152 W 4 1 *8 230 W 1 *9 206 W *10 40 W 100 to 120 VAC 2 *11 40 W 100 to 120/200 to 240 VAC 2 *12 34 W 2 *13 100 W 2 (+1) 2 *14 88 W 3 2 *15 160 W 3 (+1) 2 *16 142 W 200 to 240 VAC 3 *17 30 W 100 to 120 VAC 3 *18 30 W 100 to 120/200 to 240 VAC 3 *19 24 W 3 *20 90 W 3 *21 78 W 200 to 240 VAC 4 *22 20 W 100 to 120 VAC 4 *23 20 W 200 to 240 VAC 2 1 (+1) 2 1 1 (+1) 2 2 (+1) Output power (W) 1 180 *6 160 140 120 *7 100 Output power (W) 1 80 40 *2 *3 0 –30 –20 –10 0 0 –30 –20 –10 0 10 20 30 40 50 60 Ambient temperature (°C) *8 200 *9 150 45 40 *11 35 30 25 120 *13 100 40 80 60 30 20 0 –30 –20 –10 0 10 20 30 40 50 60 Ambient temperature (°C) 100 90 *20 80 70 60 *21 0 –30 –20 –10 0 10 20 30 40 50 60 Ambient temperature (°C) 25 20 15 *22 50 15 *19 5 40 10 30 10 40 20 *18 25 Output power (W) 100 35 20 *10 0 –30 –20 –10 0 10 20 30 40 50 60 Ambient temperature (°C) 0 –30 –20 –10 0 10 20 30 40 50 60 Ambient temperature (°C) Output power (W) *16 *14 *12 5 140 80 10 20 *15 10 20 30 40 50 60 Ambient temperature (°C) 60 20 50 180 *5 80 20 *1 15 160 *4 100 40 10 250 0 –30 –20 –10 0 10 20 30 40 50 60 Ambient temperature (°C) 120 60 20 100 40 Output power (W) 50 30 60 120 60 Output power (W) 200 to 240 VAC 1 4 (+1) Note: 1. “+1” indicates the addition of one more S8TS-06024@ Basic Block if a redundant system is used. 2. If there is a derating problem, use forced air cooling. 3. The ambient temperature is specified at a place 50 mm below the Product. 4. The energy consumption of the S8T-DCBU-02 (approximately 10 W per Block) from the S8TS-06024@ reduces the total output capacity when more than one S8TS-06024@ Block is connected. 5. The rated output current of the S8T-DCBU-02 is 2.5 A per Block regardless of the number of S8TS-06024@ Basic Blocks that are connected. Rated output power Output power (W) 2 Derating curve Output power (W) 1 (+1) Number of S8T-DCBU-02 Blocks Output power (W) 1 S8TS-06024@ rated input Output power (W) Number of S8TS-06024@ Blocks *17 0 –30 –20 –10 0 10 20 30 40 50 60 Ambient temperature (°C) *23 20 5 10 0 –30 –20 –10 0 10 20 30 40 50 60 Ambient temperature (°C) 0 –30 –20 –10 0 10 20 30 40 50 60 Ambient temperature (°C) 11 S8T-DCBU-02 ■ Power Supply Output Hold Times (Reference Values) The rated currents are given for load currents. Series S8TS Model number 06024@ S8VS 01524 03024 06024@ 09024@@ 12024@@ 18024@@ 24024@@ 48024@ Load current (A) 0.5 1 1.5 2.1 0.1 0.2 0.25 0.25 0.5 0.75 0.9 0.5 1 1.5 2.1 1 2 2.95 1 2 3 4 4.2 2 4 6 6.3 2.5 5 7.5 8.4 2.5 5.0 7.5 10.0 Output hold time (ms) 100 VAC 200 VAC 163 167 98 100 70 70 56 58 114 472 78.4 344 68.8 300 124 526 72 334 47.4 242 36.8 204 158 664 88 382 57 266 36 194 118 508 58 274 34 176 262 262 148 148 102 102 75 75 72 72 225 230 107 120 71 75 65 70 170 170 68 72 52 56 40 44 291 268 147 157 97 103 75 77 Series S8VM Model number 01524@@ 03024@@ 05024@@ 10024@@ 15024@@ 30024C 60024C 15224C Load current (A) 0.1 0.2 0.25 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 0.1 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 0.5 1.0 1.5 2.0 2.5 3.0 3.5 3.7 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.3 2.5 5.0 7.5 10.0 2.5 5.0 7.5 10.0 2.5 5.0 7.5 10.0 Output hold time (ms) 100 VAC 200 VAC 94 414 66 308 52 258 154 492 114 516 84 414 72 340 56 290 46 248 36 218 28 202 22 166 218 218 164 170 114 110 84 84 68 72 58 54 44 44 36 38 34 32 28 30 240 232 136 132 94 92 70 70 52 56 40 44 38 38 32 30 332 334 192 196 136 140 102 108 80 86 66 66 60 58 52 50 44 44 54 54 34 38 162 169 84 84 52 57 43 41 304 306 170 158 116 121 88 88 680 520 644 517 638 515 635 510 12 S8T-DCBU-02 ■ Power Supply Output Hold Times (Reference Values) The rated currents are given for load currents. Series Model number Load current (A) Output hold time (ms) 100 VAC S8JX N05024@@ N10024@@ N15024@@ 200 VAC 0.5 112 520 1 62 290 1.5 42 208 1.7 38 186 1 104 524 2 58 288 3 36 184 3.7 30 150 1.5 142 648 3 68 334 4.5 46 226 5.3 38 188 ■ Power Supply Restart Times (Reference Values) Series Model number Restart time (ms) Momentary power failure time: 300 ms 100 VAC Momentary power failure time: 500 ms 200 VAC 100 VAC Momentary power failure time: 1,000 ms 200 VAC 100 VAC 200 VAC S8TS 06024@ 320 270 320 270 345 290 S8VS 01524 5.4 5.6 6 4.8 6.2 5 03024 390 110 456 140 576 196 06024 330 8 424 200 496 300 06024A/06024B 220 5 280 95 380 155 09024/09024S 312 6 378 186 512 308 09024A@/09024B@ 220 5 286 100 390 157 12024@@ 360 248 400 288 432 322 18024 288 252 306 276 388 356 18024A@/18024B@ 230 198 247 216 263 235 24024 266 24024A@/24024B@ 5 S8VM S8JX 236 272 248 328 300 5 5 5 15 5 48024@ 53 3 267 229 278 242 01524@@ 356 152 376 164 420 180 03024@@ 350 150 372 160 420 184 05024@@ 240 196 248 196 270 216 10024@@ 248 208 256 208 280 220 15024@@ 250 226 272 216 300 236 30024C 62 48 64 50 74 60 60024C 366 198 380 200 436 276 15224C 556 472 568 480 576 488 N05024@@ 180 120 204 138 280 172 N10024@@ 186 128 210 144 268 106 N15024@@ 222 12 246 152 320 208 13 S8T-DCBU-02 Dimensions Note: All units are in millimeters unless otherwise indicated. ■ Buffer Block and Bus Line Connector Buffer Block S8T-DCBU-02 Six, M4 with square washer 105 10 4 2.5 120 10 43 5 80.7 35 120 5.6 (Sliding: 15 max.) Bus Line Connector S8T-BUS03 8.6 2 24 10 7.6 5.5 Sliding 5 13 70 5.5 Sliding 2 2.5 18 4 35 14 S8T-DCBU-02 ■ DIN Rails (Order Separately) Mounting Rails (Material: Aluminum) PFP-100N PFP-50N 7.3±0.15 4.5 27±0.15 35±0.3 15 25 10 25 25 1,000 (500)* 10 25 15 (5)* 1 * Values in parentheses are for the PFP-50N. PFP-100N2 16 4.5 35±0.3 27 15 25 10 25 25 1,000 10 25 15 24 29.2 1 1.5 End Plate PFP-M 10 6.2 1.8 Eight, M4 pan-head screw 1 50 35.5 35.3 1.8 11.5 10 M4 spring washer 1.3 4.8 15 S8T-DCBU-02 Safety Precautions Refer to Safety Precautions for All Power Supplies. !CAUTION Installation and Environment Minor fires may occasionally occur or wires may become detached causing the backup operation to fail if screws are not tightened properly. Tighten terminal screws to a torque of 1.08 N·m so that they do not become loose. Minor electric shock may occasionally occur. Do not remove the connector cover unless connecting the Bus Line Connector. Mounting Improper mounting will interfere with heat dissipation and may occasionally result in deterioration or damage of internal parts. Use the specified mounting method only. Ensure sufficient heat dissipation when installing the Product to increase its long-term reliability. Natural cooling is used, so mount the S8T-DCBU-02 so that there is airflow around it. S8TS-06024@ Minor electric shock may occasionally occur and the backup operation will fail if the connector becomes disconnected. Be sure to lock the slider and rail stopper securely when connecting the Basic Block and the S8TDCBU-02 to prevent the connector from being disconnected due to vibration. *1 Operation Minor burns may occasionally occur. Do not touch the S8T-DCBU-02 while power is being supplied or immediately after power is turned OFF. Minor electric shock may occasionally occur. Do not add or remove the S8T-DCBU-02 while power is being supplied. Maintenance Minor electric shock may occasionally occur. Do not disassemble the S8T-DCBU-02 or touch the interior of the S8T-DCBU-02. ■ Precautions for Safe Use Observe the following precautions to ensure safety when using the S8T-DCBU-02. *1 *1 L N L INPUT 50/60Hz AC100 -240V 1.0A 50/60Hz AC100 -240V 1.0A L L N N +V +V -V -V DC ON DC ON Class2 Power Supply DC LOW *1 +V DC LOW *1 *3 OUTPUT V.AD J DC24V 2.5A -V Class2 Power Supply DC LOW OUTPUT V.AD J DC LOW *2 N INPUT Internal parts may occasionally deteriorate or be damaged and the backup operation may not be sufficient. Do not use the S8T-DCBU-02 for applications that subject the load to frequent inrush currents or overload currents. The S8T-DCBU-02 may occasionally be damaged. Do not allow any clippings or cuttings to enter the S8T-DCBU-02 during mounting. *2 S8T-DCBU-02 DC24V 2.5A -V +V *1 *3 *4 *4 *1. Convention of air *2. 75 mm min. *3. 75 mm min. *4. 20 mm min. Installation/Wiring Minor electric shock or malfunction may possibly occur. Connect the ground wire completely. Minor fires may possibly occur. Check the terminals to be sure they are wired correctly. Do not apply more than 100-N force to the terminal block when tightening the terminals. Close the terminal cover to help prevent short-circuiting terminals with foreign objects. Be sure to remove the sheets covering the S8T-DCBU-02 for machining before turning ON the power so that they do not interfere with heat dissipation. Use the wiring material specified in the following table to protect wires from smoking or ignition due to abnormal loads. Also, the backup operation may not be sufficient due to voltage drop in the wiring material if thin wiring materials are used. I/O Terminals Load current Number of connected S8T-DCBU-02 Recommended wire diameter Up to 2.5 A 1 Setting and Selecting Power Supply to be Connected AWG 14 to 20 (cross-sectional area: 0.517 to 2.081 mm2) Up to 5.0 A 2 AWG 14 to 18 (cross-sectional area: 0.823 to 2.081 mm2) Do not connect a power supply other than the ones specified below. Up to 7.5 A 3 Specified Power Supply (SELV Power Supply): S8TS Series, S8VS Serie. AWG 14 to 16 (cross-sectional area: 1.309 to 2.081 mm2) Up to 10 A 4 AWG 14 (cross-sectional area: 2.081 mm2) Only power supplies with an output voltage of 24 V and an output capacity of 9.6 W or more can be connected. When selecting the power supply to be connected, take both the operation current and power of S8T-DCBU-02 into consideration, allowing sufficient margin. Signal output terminals: AWG 16 to 22 (Cross-sectional area: 0.326 to 1.309 mm2) (Wire stripping length: 11 mm) Installation Environment Do not use the S8T-DCBU-02 in locations subject to shocks or vibrations. In particular, install the S8T-DCBU-02 as far away as possible from contactors or other devices that are a vibration source. Install a PFP-M End Plate on each end of the product. Install the S8T-DCBU-02 well away from any sources of strong, highfrequency noise and surge. 16 S8T-DCBU-02 Ambient Operating Environment and Storage Environment Store the S8T-DCBU-02 at an ambient temperature of −25 to +65°C, and a relative humidity of 25% to 90%. The internal parts may occasionally deteriorate or be damaged. Do not use the S8T-DCBU-02 outside the derating range (i.e., under conditions indicated by the shaded area ( ) in the derating curve diagram on page 9.) Use the S8T-DCBU-02 at a relative humidity of 25% to 85%. Do not use the S8T-DCBU-02 in locations subjected to direct sunlight. Do not use the S8T-DCBU-02 in locations where liquid, foreign matter, or corrosive gases may enter the interior of the S8T-DCBU-02. Precautions in Using After connecting the devices to the S8T-DCBU-02, check whether sufficient backup is performed correctly by operating the S8T-DCBU-02. Check the load current using the actual system in advance to confirm that there is sufficient leeway in the backup time. Check to confirm that the READY indicator and the output function correctly. The backup operation may not be sufficient if the READY indicator and output do not function correctly. The S8T-DCBU-02 will perform the backup operation not only for momentary power failures or voltage drops, but also when the input power is OFF. The backup time is particularly long for light loads. Check the devices connected to the S8T-DCBU-02 to be sure it has stopped operation correctly. Periodic Inspection and Periodic Replacement The S8T-DCBU-02 contains built-in electrolytic capacitors, which have a limited life. Perform periodic inspection and replacement. The performance of the electrolytic capacitor will deteriorate as the total operating time increases, eventually leading to insufficient performance. Refer to the following guidelines for periodic replacement. Ambient temperature Guideline of replacement With space between Connected to S8TS the Units 30°C max. 15 years 40°C 12 years 15 years 8.5 years 50°C 6 years 5.5 years (See note.) 60°C 3 years --- Note: The load ratio of the S8TS is limited to 60% due to the derating curve. Handling the Bus Line Connector Do not drop the Bus Line Connector or subject it to strong shock. Do not connect and disconnect the Bus Line Connector more than 20 times. Also, do not touch the terminals on the Bus Line Connector. Connection failure may cause deterioration of electric performance. 17 S8T-DCBU-02 Troubleshooting The following table lists the errors that may occur when the S8T-DCBU-02 is used, along with their probable causes and remedies. Check the relevant items. When Cause During installation The S8TS-06024@ and S8T-DCBU-02 cannot be connected. When checking operation (Refer to Checking Operation and Periodic Inspection on page 6.) The S8TS-06024@ when connected does not operate in step 2 of the operation checking procedure. The READY indicator on the S8T-DCBU-02 does not light in step 2 of the operation checking procedure when connected to the S8TS. The READY indicator on the S8T-DCBU-02 does not light in step 2 of the operation checking procedure. Description The Bus Line Connector is provided with a selector to prevent misconnection of 12-V and 5-V S8TS Blocks. Connection will not be possible if the selector is set for the wrong type of Block. The AC line is not connected by the S8T-BUS03 Bus Line Connector when the S8TDCBU-02 is connected. The S8T-DCBU-02 may be connected between two S8TS-06024@ Blocks. Power is supplied via the S8T-BUS03 Bus Line Connector when the S8T-DCBU-02 and S8TS are connected. The Bus Line Connector may not be connected. A Bus Line Connector that does not connect the DC line (such as the S8T-BUS02) may be connected. Up to 60 seconds is required to completely charge the internal capacitor after the input power has been turned ON. The READY indicator will not turn ON immediately after the input power is turned ON. The positive and negative I/O terminals on the S8T-DCBU-02 may be connected in reverse or the power supply may be connected to an incorrect terminal (e.g., an NC terminal). The voltage input to the S8T-DCBU-02 may be 23 V or less. Overcurrent protection on the connected power supply may have operated and the voltage may have dropped to below 23 V. The backup operation is not The restart time of the connected power supply performed for the expected after recovery from momentary power failures backup time in step 4 of the may be too long. operation checking procedure. The voltage during the backup operation may be high, increasing the power consumption during the backup operation. The output current during the backup operation may be higher than expected. The voltage output for the backup operation is low in step 4 of the operation checking procedure. Overcurrent protection on the connected power supply may have operated and the voltage input to the S8T-DCBU-02 may have dropped to below 24 V. The wiring to the load is too long or too thin, causing excessive voltage drop. When checking operation (Refer to Checking Operation and Periodic Inspection on page 6.) The voltage output for the backup operation is low in step 4 of the operation checking procedure. Overcurrent protection may have operated on the S8T-DCBU-02. Remedies Set the selector on the S8T-BUS03 Bus Line Connector to 24 V. Refer to S8T-BUS03 Bus Line Connector on page 5. Connect the S8T-DCBU-02 to the right or left end of the connected Blocks. Refer to Mounting on page 5. Connect the S8T-DCBU-02 and S8TS-06024@ using an S8T-BUS03 Bus Line Connector. Refer to Basic Configuration on page 1. Connect the S8T-DCBU-02 and S8TS-06024@ using an S8T-BUS03 Bus Line Connector. Refer to Basic Configuration on page 1. Check that the READY indicator lights after 60 seconds has passed since turning ON the input power. Refer to READY Operation on page 7. Check the wiring to be sure it is correct. The internal circuits of the S8T-DCBU-02 will be protected even if the positive and negative terminals are reversed. Correct the polarity and turn ON the power supply again. Refer to Reverse Connection Protection on page 7. Check the I/O terminals on the S8T-DCBU-02 and adjust the voltage output using the output voltage adjuster (V. ADJ) of the connected power supply so that it is 24 V or higher. Refer to Input Voltage on page 5. The S8T-DCBU-02 consumes 0.4 A, so the rated current of the connected power supply cannot be delivered completely to the load. Increase the capacity of the connected power supply. Refer to Selecting the Power Supply on page 4. The momentary power failure time differs from the backup time required to compensate for it. Change to a power supply with a shorter restart time or connect S8T-DCBU-02 Blocks in parallel to increase the backup time. Refer to Selecting the Power Supply on page 4. The output voltage during the backup operation is automatically adjusted based on detecting the voltage input to the S8T-DCBU-02. Connect S8T-DCBU-02 Blocks in parallel to increase the backup time. Refer to Parallel Connection on page 5. Connect S8T-DCBU-02 Blocks in parallel to increase the backup time. Refer to Parallel Connection on page 5. The S8T-DCBU-02 consumes 0.4 A, so the rated current of the connected power supply cannot be delivered completely to the load. Increase the capacity of the connected power supply. Refer to Selecting the Power Supply on page 4. Use the thickest wire and shortest distance possible. The output voltage during backup will be up to 2 V lower than the input voltage. Refer to Wiring Connections on page 5. Allow for leeway for the load capacity in the application or increase the output current during the backup operation by connecting S8T-DCBU-02 Blocks in parallel. Refer to Parallel Connection on page 5. 18 S8T-DCBU-02 When When checking operation (Refer to Checking Operation and Periodic Inspection on page 6.) Cause Description The output hold time of the connected power The BACKUP indicator supply may be sufficient to handle the momendoes not light in step 4 of the operation checking pro- tary power failure. cedure. The voltage output from the S8T-DCBU-02 during the backup operation may be lower because overcurrent protection has operated in the S8T-DCBU-02. During actual operation The READY indicator is not The input voltage to the S8T-DCBU-02 may be lit and the READY output is 23 V or less. OFF. The backup time has become shorter. A voltage of approximately 31 V or higher may be input to the I/O terminals of the S8T-DCBU-02, causing the overvoltage protection circuit to operate. It's possible that momentary power failures are occurring consecutively. It's possible that the characteristics of the builtin electrolytic capacitors have deteriorated. There is chattering on the READY output. The input voltage of the S8T-DCBU-02 may be very close to 23 V. The output voltage is not restored even after the power supply is restored following a momentary power failure. The backup operation is performed repeatedly. Protection on the connected power supply may have operated, stopping the operation of the power supply. If more than one S8TS-06024@ Block is connected, one of the Blocks may be faulty. An overcurrent status caused by load fluctuation may exist in the connected power supply. Remedies Use a timer to increase the power failure of the AC input from the connected power supply and confirm that the BACKUP indicator lights. Refer to Selecting the Power Supply on page 4. Allow for leeway for the load capacity in the application or increase the output current during the backup operation by connecting S8T-DCBU-02 Blocks in parallel. Refer to Parallel Connection on page 5. Check the voltage at the I/O terminals of the S8T-DCBU-02 and adjust the voltage output using the output voltage adjuster (V. ADJ) of the connected power supply so that it is 24 V or higher. Refer to Input Voltage on page 5. Clear the overvoltage protection (turn OFF the input power for 1 minute or longer and then turn it back ON). Refer to Overvoltage Protection on page 7. The backup time is measured when the built-in electrolytic capacitors are fully charged. If momentary power failures occur within one minute of each other, the charge will not be complete and the backup time will be shorter. Refer to Backup Operation on page 7. Electrolytic capacitors are built into the Block and these capacitors have a limited life. When an electrolytic capacitor exceeds its useful life, its capacity will decrease and other characteristics will deteriorate. This will cause the backup time to be shorter. Refer to Operation Check and Periodic Inspection on page 6 and to Periodic Inspection and Periodic Replacement on page 17. Check the voltage at the I/O terminals of the S8T-DCBU-02 and adjust the voltage output using the output voltage adjuster (V. ADJ) of the connected power supply so that it is 24 V or higher. Refer to Input Voltage on page 5. Clear the protection function of the connected power supply. Replace the faulty S8TS-06024@ Block. Allow for leeway for the load capacity in the application or increase the capacity of the connected power supply. Refer to Backup Operation on page 7. ALL DIMENSIONS SHOWN ARE IN MILLIMETERS. To convert millimeters into inches, multiply by 0.03937. To convert grams into ounces, multiply by 0.03527. In the interest of product improvement, specifications are subject to change without notice. 19 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. 2015.6 In the interest of product improvement, specifications are subject to change without notice. OMRON Corporation Industrial Automation Company http://www.ia.omron.com/ (c)Copyright OMRON Corporation 2015 All Right Reserved.