PD-100 – Pump Decoder (800) 272-7472 www.tucor.com The Tucor PD-100 Pump Decoder microprocessor that provides features for provides an interface between a Tucor controlling and testing. The address can controller and an external motor starter be selected in the field and contains an circuit. It receives control power and signals OFF and TEST position. The PD-100 via the two-wire path and provides a mounts in a standard octal-style socket for Normally Open / Normally Closed contact for ease of installation and testing. start control. The pump decoder contains a FEATURES: Mounts in standard 11-pin octal-style socket (included) for ease of installation. Socket keyed for DIN rail mounting. Supports six independent, field selectable addresses: 284, 286, 287, 292, 293, 295. Contains integral OFF and TEST positions for isolating and testing local starter circuit. Easily viewable, top-mounted LED that turns on when active. Socket supports up to 12 AWG two-wire path and control circuit wiring. Contains a Normally Open and Normally Closed contact rated at 24VAC @ 8A. PD-100 Pump Decoder in octal socket Note: The PD-100’s contains a single dry contact closure. It serves to energize the actual pump start relay, whose contacts are electrically rated large enough to start the pump itself. Closing these contacts typically requires a fairly large relay, the “pump starter holding coil”, shown below. This large holding coil requires a great deal of electrical current. The 2-wire path is not designed to supply enough current to energize a pump start relay. The customer must supply an additional transformer that is sized (voltage and current) to match the holding coil. See the diagram below.