Extended Period of Continuous Valve Energization SY3000/5000/7000/9000 SYJ3000/5000/7000 VQ0000/1000/2000/4000 SQ1000/2000 VQC1000/2000/4000 VQZ1000/2000/3000 . Power consumption 0.35 W: 24/12/6/5/3 VDC 0.1 W (With power-saving circuit): 24/12 VDC . Power consumption 0.5 W (Low-wattage type): 24/12 VDC 0.3 W (With power-saving circuit): 24/12 VDC (compliant with the SQ) When selecting solenoid valves, please take other specifications into consideration besides power consumption. Valves with power-saving circuits or low-wattage types may have maximum operating pressures, response times, etc. that differ from the standard. Please refer to the catalog for each series for details. 0.1 W (with power-saving circuit) is not available for the VQZ1000/2000/3000. If a valve will be continuously energized for an extended period of time, the temperature of the valve will increase due to the heat generated by the coil. This will likely adversely affect the performance of the solenoid valve and any nearby peripheral equipment. Therefore, when it is continuously energized or the energized period per day is longer than the de-energized period use, read the precautions below and take appropriate measures. (Please consult SMC for the number of valves energized and the value of the rise in temperature.)  Precautions q When the valve is mounted within the control panel, please take heating measures to maintain a temperature within the range listed in the valve specifications (.10 to 50°C). w Especially when simultaneously keeping three or more stations of manifolds in a row energized continuously for extended periods of time, or simultaneously keeping the A side and B side of dual 3 port valves energized continuously for extended periods of time, there can be drastic rises in temperature. Please exercise caution. e Do not keep latching-type valves energized continuously. Because latching-type valves, such as double solenoid valves, maintain their switching position when energized for a split second (20 ms or more), it is not necessary to keep them continuously energized. (Please consult SMC in cases where it is necessary to keep latching-type valves energized continuously for extended periods of time.)  Measures q Please use low-power-consumption solenoid valves. Recommended models are shown below. w Please consider changing to an N.O. (Normally Open) air circuit so that air can escape during non-energized periods. Series VQ/SQ/VQC Series SY/VQZ Technical Data 26