Serial EX500/EX250/EX260 Precautions Safety Instructions on Cable Caution Design/Selection 1. Keep the surrounding space free for maintenace. When designing a system, take into consideration the amount of free space needed for performing maintenance. 2. When applicable to UL, use a Class 2 power supply unit conforming to UL1310 for direct current power supply. 3. This product is one of the components to be equipped into a final equipment. Confirm the adaptability to the EMC directive as the whole equipment by customers themselves. 4. The power supply for the Gateway unit should be 0 V as the standard for both power supply for outputs as well as inputs and for the control unit of the Gateway. Serial EX510 Precautions Series S0700 Specific Product Precautions 6 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. Be careful of miswiring. This can cause malfunction, damage and fire in the unit. 2. Do not connect cables during energizing. This could damage or cause malfunction to the SI unit. 3. To prevent noise and surge in signal lines, keep all wiring separate from power lines and high voltage lines. Otherwise, this can cause malfunction. 4. Check wiring insulation, as defective insulation can cause damage to the unit due to excessive voltage or current. 5. 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. Caution 1. Use within the allowable voltage range. Using beyond the allowable voltage range is likely to cause the units and connecting devices to be damaged or to malfunction. 2. Do not use beyond the specification range. Using beyond the specification range is likely to cause a fire, malfunction, or breakdown in the units and connecting devices. Check the specifications before handling. 3. Establish a backup system beforehand, which employs fail-safe concepts such as multiple equipment and devices to prevent breakage or malfunction of this product. 4. Provide an external emergency stop circuit that will immediately stop an operation and cut off the power supply. 5. When using for an interlock circuit: . Provide a double interlock which is operated by another system (such mechanical protection function). . Perform an inspection to check that it is working properly because it can cause possible injuries. Warning +24 V 0 V +24 V Power supply for input and for the control unit of the Gateway Power supply for output +24 V 0 V .24 V Power supply for input and for the control unit of the Gateway Power supply for output 978