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7014NCB Datasheet(PDF) 1 Page - Tyco Electronics |
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7014NCB Datasheet(HTML) 1 Page - Tyco Electronics |
1 / 6 page 1248 AGASTAT Dimensions are shown for reference purposes only. Dimensions are in inches over (millimeters) unless otherwise specified. Catalog 1308242 Issued 3-03 (PDF Rev. 10-07) Specifications and availability subject to change. www.tycoelectronics.com Technical support: Refer to inside back cover. 7000 series Industrial Electropneumatic Timing Relay File E15631 File LR29186 Note:7032 types and certain models with accessories are not agency approved. Users should thoroughly review the technical data before selecting a product part number. It is recommended that users also seek out the pertinent approvals files of the agencies/laboratories and review them to confirm the product meets the requirements for a given application. Consult factory for ordering information. Design Features • Available in on-delay, true off-delay, and on/off-delay. • Timing from 0.1 seconds to 60 minutes, in linear increments. • Oversize time-calibrated adjustment knobs, serrated with high-resolution markings visible from all angles makes the timer easy to set timers. • Inherent transient immunity. • Standard voltages from 6-550VAC and 12-550VDC (special voltages available.) • Available in 2-pole or 4-pole models. • Numerous enclosure options: explosion proof, dust tight, watertight, hermetically-sealed, NEMA 1. • Auxiliary timed and instantaneous switches can be added for greater switching flexibility. • Many mounting options: Surface mount, Panel mount, Octal plug-in mounting. • Options: quick-connect terminals, dial stops, and transient protection module. • Easy-to-reach screw terminals, all on the face of the unit, clearly identified. • Modular assembly - timing head, coil assembly and switchblock are all individual modules, with switches field-replaceable. Design & Construction There are three main components of Series 7000 Timing Relays: Calibrated Timing Head uses no needle valve, recirculates air under controlled pressure through a variable orifice to provide linearly adjustable timing. Patented design provides instant recycling, easy adjustment and long service life under severe operating conditions. Precision-Wound Potted Coil module supplies the initial motive force with minimum current drain. Total sealing without external leads eliminates moisture problems, gives maximum insulation value. Snap-Action Switch Assembly - custom-designed over-center mechanism provides greater contact pressure up to transfer time for positive, no flutter action. Standard switches are DPDT arrangement, with flexible beryllium copper blades and silver-cadmium oxide contacts. Special "timing-duty" design assures positive wiping action, sustained contact pres- sure and greater heat dissipation during long delay periods. Each of these subassemblies forms a self-contained module which is then assembled at the factory with the other two to afford a wide choice of operating types, coil voltages, and timing ranges. The squared design with front terminals and rear mounting permits the grouping of Series 7000 units side-by-side in minimum panel space. Auxiliary switches may be added in the base of the unit, without affecting the overall width or depth. On-delay model 7012 (delay on pickup) NOTE: Seismic & radiation tested E7000 models are available. Consult factory for detailed information. Operation Two basic operating types are available. “On-Delay” models provide a delay period on energization, at the end of which the switch transfers the load from one set of contacts to another. De- energizing the unit during the delay period immediately recycles the unit, readying it for another full delay period on re-energization. In "Off-Delay" models the switch transfers the load immediately upon energization, and the delay period does not begin until the unit is de- energized. At the end of the delay period the switch returns to its original po- sition. Re-energizing the unit during the delay period immediately resets the timing, readying it for another full delay period on de-energization. No power is required during the timing period. In addition to these basic operating types, "Double-Head" models offer sequential delays on pull-in and drop-out in one unit. With the addition of auxiliary switches the basic models provide two-step timing, pulse actuation for interlock circuits, or added circuit capacity. Applying continuous voltage to the coil (L1-L2) starts a time delay lasting for the preset time. During this period the normally closed contacts (3-5 and 4-6) remain closed. At the end of the delay period the normally closed contacts break and the normally open contacts (1-5 and 2-6) make. The contacts re- main in this transferred position until the coil is deenergized, at which time the switch instantaneously returns to its original position. De-energizing the coil, either during or after the delay period, will recycle the unit within 50 msec. It will then provide a full delay period upon re-energization, regardless of how often the coil voltage is interrupt- ed before the unit has been permitted to "time-out" to its full delay setting. Off-delay model 7022 (delay on dropout) Applying voltage to the coil (for at least 50 msec) will instantaneously transfer the switch, breaking the nor- mally closed contacts (1-5 and 2-6), and making the normally open contacts (3-5 and 4-6). Contacts remain in this transferred position as long as the coil is energized. The time delay begins immediately upon de-energization. At the end of the de- lay period the switch returns to its normal position. Re-energizing the coil during the delay period will immediately return the timing mechanism to a point where it will provide a full delay period upon subsequent de- energization. The switch remains in the transferred position. To increase the versatility of the basic timer models, auxiliary switches may be added to either on-delay or off-delay types. They switch additional circuits, provide two-step timing action, or furnish electrical interlock for sustained coil energization from a momentary impulse, depending on the type selected and its adjustment. Because of their simple attachment and adjustment features, they can be installed at the factory or in the field, by any competent mechanic. All auxiliary switches are SPDT with UL listings of 10A @ 125, 250, or 480 VAC. A maximum of one Code T or two Code L auxiliary switches may be added to each relay. The L or LL switch is available with on-delay relays only. The T switch is available with both the on-delay and off-delay relays. Auxiliary Switch Options for On-Delay Instant Transfer (Auxiliary Switch Code L, maximum of 2 per relay.) 1. Energizing coil begins time delay and transfers auxiliary switch. 2. Main switch transfers after total preset delay. 3. De-energizing coil resets both switches instantly. Auxiliary switch is nonadjustable. Two-Step Timing (Auxiliary Switch Code T, maximum of 1 per relay.) |
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