Serial EX500/EX250/EX260 Precautions 1. Operation is possible with a single power supply or a separate power supply. However, be sure to provide two wiring systems (one for solenoid valves, and one for input and control units). 2. When applicable to UL, use a Class 2 power supply unit conforming to UL1310 for direct current power supply. Safety Instructions on Power Supply Caution Series S0700 Specific Product Precautions 5 Be sure to read before handling. Refer to front matter 53 for Safety Instructions, Pages 3 to 8 for 3/4/5 Port Solenoid Valve Precautions. 1. These products are intended for use in general factory automation equipment. Avoid using these products in machinery/equipment which affects human safety, and in cases where malfunction or failure can result in extensive damage. 2. Do not use in an explosive atmosphere, environment with inflammable gases, or corrosive atmosphere. This can cause injury or fire, etc. 3. Work such as transporting, installing, piping, wiring, operation, control and maintenance should be performed by personnel with specialized knowledge. There is a danger of electrocution, injury or fire, etc. 4. Install an external emergency stop circuit that can promptly stop operation and shut off the power supply. 5. Do not remodel these products, as there is a danger of injury and damage. Caution 1. Read the operation manual carefully, strictly observe the precautions and operate within the range of the specifications. 2. Do not drop these products or submit them to strong impacts. This can cause damage, failure or malfunction, etc. 3. In locations with poor electrical conditions, take steps to ensure a steady flow of the rated power supply. Use of a voltage outside of the specifications can cause malfunction, damage to the unit, electrocution or fire, etc. 4. Do not touch connector terminals or internal substrates when current is being supplied. There is a danger of malfunction, damage to the unit or electrocution if connector terminals or internal substrates are touched when current is being supplied. Be sure that the power supply is OFF when adding or removing manifold valves or input blocks, etc., or when connecting or disconnecting connectors. 5. Operate at an ambient temperature that is within the specifications. Even when the ambient temperature range is within the specifications, do not use in locations where there are rapid temperature changes. 6. Keep wire scraps and other extraneous material from getting inside these products. This can cause fire, failure or malfunction, etc. 7. This product is not constructed to withstand water or oil penetration. Therefore it should be fitted with a protective cover when used in environments where it could be exposed to water or oil splash. 8. Observe the proper tightening torque. There is a possibility of damaging threads if tightening exceeds the tightening torque range. 9. Adjustment/Operation DIP switches and rotary switches should be set with a small watchmakers’ screwdriver. Warning 10. Provide adequate protection when operating in locations such as the following: . Where noise is generated by static electricity, etc. . Where there is a strong electric field . Where there is a danger of exposure to radiation . When in close proximity to power supply lines 11. When these products are installed in equipment, provide adequate protection against noise by using noise filters, etc. 12. Since these products are components that are used after installation in other equipment, the customer should confirm conformity to EMC directives for the finished product. 13. Do not remove the name plate. 14. Perform periodic inspections and confirm normal operation. It may otherwise be impossible to guarantee safety due to unexpected malfunction or erroneous operation. 15. For the EX260-SPN�ｮ, the side of the SI unit may become hot. It may cause burns. 16. Do not use this product in places where there are cyclic temperature changes. In case that the cyclic temperature is beyond normal temperature changes, the inside product is likely to be adversely affected. 17. Do not use in direct sunlight. Do not use in direct sunlight. It may cause a malfunction or damage. 18. Do not use in places where there is radiated heat around it. Such a place is likely to cause a malfunction. Caution 977 SY SJ SY SV SYJ SZ VF VP4 S0700 VQ VQ4 VQ5 VQC VQC4 VQZ SQ VFS VFR VQ7 A