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 explosive environments, in the presence of inflammable gases, or in corrosive environments. This can cause injury or fire. 3. Work such as transporting, installing, piping, wiring, operation, control and maintenance should be performed by knowledgeable and qualified personnel only. As handling involves the risk of a danger of electrocution, injury or fire. 4. Install an external emergency stop circuit that can promptly stop operation and shut off the power supply. 5. Do not modify these products. Modifications done to these products carry the risk of injury and damage. 1. Read the instruction 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. 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. 4. Do not touch connector terminals or internal circuit elements when current is being supplied. There is a danger of malfunction, damage to the unit or electrocution if connector terminals or internal circuit elements are touched when current is being supplied. Be sure that the power supply is OFF when adding or removing manifold valves or input blocks 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 materials from getting inside these products. This can cause fire, failure or malfunction. 7. Give consideration to the operating environment depending on the type of enclosure being used. To achieve IP65 and IP67 protection class, provide appropriate wiring between all units using electrical wiring cables, communication connectors and cables with M12 connectors. Also, provide waterproof caps when there are unused ports, and perform proper mounting of input units, input blocks, SI units and manifold valves. Provide a cover or other protection for applications in which there is constant exposure to water. 8. Use the proper tightening torques. There is a possibility of damaging threads if tightening exceeds the tightening torque range. 9. Provide adequate protection when operating in locations such as follows: . Where noise is generated by static electricity . Where there is a strong electric field . Where there is a danger of exposure to radiation . When in close proximity to power supply lines EX500/EX260/EX250/EX126 Precautions 10. When these products are installed in equipment, provide adequate protection against noise by using noise filters. 11. Since these products are components whose end usage is obtained after installation in other equipment, the customer should confirm conformity to EMC directives for the finished product. 12. Do not remove the name plate. 13. Perform periodic inspections and confirm normal operation, otherwise it may be impossible to guarantee safety due to unexpected malfunction or erroneous operation. 14. Do not use 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 effected. 15. Do not use in direct sunlight. Do not use in direct sunlight. It may cause malfunction or damage. 16. Do not use in places where there is radiated heat around it. Such a place is likely to cause malfunction. 1. Avoid miswiring, as this can cause malfunction, damage and fire in the unit. 2. To prevent noise and surge in signal lines, keep all wiring separate from power lines and high-voltage lines. Otherwise, this can cause malfunction. 3. Check wiring insulation, as defective insulation can cause damage to the unit when excessive voltage or current is applied. 4. Do not bend or pull cables repeatedly, and do not place heavy objects on them or allow them to be pinched. This can cause broken lines. Safety Instructions on Cable 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 it is UL compliant, use a class 2 power supply unit in accordance with UL1310 for a combined direct current power supply. Safety Instructions on Power Supply Series VQC1000/2000 Specific Product Precautions 4 Be sure to read before handling. Refer to front matter 53 for Safety Instructions and pages 3 to 8 for 3/4/5 Port Solenoid Valves Precautions. Caution Caution Caution Caution Warning A 1212