Issue link: https://onenorgren.uberflip.com/i/555071
VALVES 2 VAL-323 For further information www.norgren.com B K E A D H C G F C D A B F G E K Rectified Coils There may be times when you have a standard AC circuit but can't have the copper shading ring which is standard in this type of valve due to media compatibility. Or, the application may be in a dirty or dusty environment where particulate causes the valve to buzz. In either case, a rectified coil will solve this problem. By adding two diodes in the coil (for half-wave rectification), or four diodes (for full-wave rectification), the effective voltage to the coil is modified from AC to DC. These rectified coils do not need any shading ring and perform as a DC coil with your standard AC input. The actual coil construction is designed for this type of rectification so you must contact the factory for ordering information. Since the addition of the diodes can make the physical size of the coil larger, it is not available in all types of coil and valve series. However, the rectification can take place away from the coil, such as on the customer's electronics, within their equipment. Consult technical support for available options. Arc Suppression When DC voltage is disconnected from a solenoid valve, the coil reacts by generating its own voltage and sending a "spike" through the circuit. Depending on the size of the coil and the number of amp turns it contains, this generated voltage can be very high. In order to suppress this "spike" and protect other sensitive components in the electronic system, a diode is connected in parallel to the coils. Once the diode is placed in the coil it will now have a polarity. Since the diode only conducts in one direction the polarity of the coil must be maintained so as not to burn out the diode and eliminate the protection it is meant to provide. For ordering data and coil availability, contact technical support. Rectified Coils and Coils with Arc Suppression Diodes COIL DIODE SWITCH POWER SOURCE – + – + COIL DIODE SWITCH POWER SOURCE – + – + COIL + 0 - + 0 - = AC Sign Wave Rectified AC Input Vertical Spade Coil Top Spade Coil Free standing molded with vertical spade • Available with 3/16" standard spade terminals vertical style for Series 2 and 3, and 1/4" standard spade terminals vertical style for Series 2, 3 and 6 and top spade style for Series 2 and 3 • Utilize the slotted housing style for Series 2, 3 and 6 vertical spade construction, as well as yoke (open frame) for top spade • Top spade, Series 2 and 3 is available with internal arc suppression diode or full wave rectification. A B C D E F G H K SERIES 2 & 3 1.05 (27) .94 (24) .44 (11) .85 (22) .25 (6) .64 (16) 97 (25) 1.03 (26) .38 (10) .187 x .020 (5 x .5) .250 x .032 (6 x .8) SERIES 6 1.25 (32) 1.41 (36) .54 (14) 1.25 (32) .37 (9) .88 (22) 1.27 (32) .52 (13) .250 x .032 (6 x .8) A B C D E F G K SERIES 2 & 3 1.06 (27) 1.18 (30) 1.00 (25) .60 (15) .61 (15) 1.19 (30) .38 (30) .250 x .032 (6 x .8) Coil Construction Dry Coil • Tape wound coil ideal for general purpose use in a clean dry environment • Generally used with grommet and conduit style housings • KIP standard coil -supplied when no suffixes are attached to valve part number or as designated on page 9 Free Standing Molded with leads • Supplied when application requires a more rugged, moisture resistant coil • Used with slotted housings, or yoke in Series 2 & 3; grommet and conduit housing for Series 6 KIP Solenoid Valves