Latching Type [VQ/SQ series double (latching) type] B-C ON (reset) Passage Indicator light Single A-C ON OFF Passage P → A A → R Indicator light Orange . P → A A → R Orange Green Latching A-C ON (set) . Maximum ON time is 10 minutes. . Duty ratio =< 50% Duty ratio = ON time + OFF time ON time “The latching solenoid is equipped with a self-holding mechanism, which permits a movable iron core in the solenoid to hold the Set position or Reset position during momentary energization (20 ms or longer),” there is no need for continuous energization. Depending on conditions, continuous energization may cause a rise in the coil temperature resulting in malfunction. 1) Do not continuously energize the latching type. When it is necessary to energize it continuously, keep the energized period to 10 minutes or less, and then leave a deenergized period (on both the A side and B side) lasting longer than the energized period, before operating it again. The duty ratio should be 50% or less. However, a minimum energization time of 20 msec is recommended. [Ambient temperature] The product should be installed in an environment with an ambient temperature of .10° to 50°C. Especially in environments with poor heat dissipation, such as installing in a panel, the heat of the coil can cause the ambient temperature to rise, so please exercise caution. 2) Use a circuit in which the Set and Reset signals will not be energized at the same time. 3) The minimum energization time for self-holding is 20 ms. 4) Even when there is no problem with normal operations and locations, please consult with SMC before using in locations with a vibration of 30 m/s2 or more, or a strong magnetic field. 5) Even though this valve is held on to reset position (passage: A → R), it may switch to the Set position during transportation, or due to impact when mounting valves, etc. Therefore, check the initial position by means of power supply or manual override prior to use. Example: When energization lasts for five minutes, it should be followed by five or more minutes of deenergization. Because the latching type has only one solenoid, both the A side and B side should be off for five minutes or more. ON time (10 minutes or less) ON time + OFF time OFF time ON time (10 minutes or less) ON time + OFF time OFF time OFF A side ON OFF B side ON Caution 1. Precautions on 2-position double solenoid valve If a double solenoid valve is operated with momentary energization, it should be energized for at least 0.1 second. However, depending on the piping conditions, the cylinder may malfunction even when the double solenoid valve is energized for 0.1 second or longer. In this case, energize the double solenoid valve until the cylinder is exhausted completely. 2. Leakage voltage Take note that the leakage voltage will increase when a resistor is used in parallel with switching element or a C-R circuit (surge voltage suppressor) is used for protecting a switching device because of the passing leakage voltage through the C-R circuit. The suppressor residual leakage voltage should be as follows. Design/Selection Warning 3/4/5 Port Solenoid Valves Precautions 2 Be sure to read this before handling. DC coil . SV, SY, SYJ, SX, SZ, SJ, VV061 (V060), VQ (V100), VQC (V100), SQ (V100), VQZ, VF, VFR, VFS, VP7, VS7, VP300, VP500, VP700, VT307, VG342 . VQD, VZ, VZS, VK, VT317, VT325 . VT301, VT315, VP315, VP450, VP470 AC coil . VK, VFR, VFS, VP7, VS7, VT317 . VZ, VZS, VT307, VG342, VT301, VT315, VT325, VP315, VT450, VP470 . SY, SYJ, VQZ,VF, VP300, VP500, VP700, VQ (V100) 15% or less of rated voltage 3% or less of rated voltage 5% or less of rated voltage 20% or less of rated voltage 2% or less of rated voltage 8% or less of rated voltage R SOL. OFF Switching element C Power supply Leakage voltage Leakage current 3 B
