Solutions | GuardDog™ Specifications

Enclosures: The GuardDog and Pump & Valve Controller unit are offered in standard NEMA 4X enclosures or optional Weatherproof NEMA 7 enclosures for Class 1, Division 1 locations. NEMA 7 enclosures are provided with two standard 1" NPT bottom entrance taps.

Communications: The GuardDog unit communicates with the Pump & Valve Controller unit to provide a fully integrated solution. While The GuardDog is placed at the Load Rack, the Pump & Valve Controller unit is typically placed at the Motor Control Center and interlocked with each Pump Motor Starter.

Hardwired MODBUS 485 and Ethernet communications are standard. An optional 902-928 MHz Spread Spectrum wireless copycat discrete interface is available with a 1 mile range, thus eliminating the need for conduit and wire.

Power Requirements: The GuardDog and Pump & Valve Controller units require a regulated 120 VAC, 3 AMP protected power supply.

Temperature Rating: -40°F to 158°F

Meter Pulse Signals: The GuardDog unit requires a minimum of 1 pulse per gallon (1:1) Dry Contact or Open Collector input from each monitored meter and associated valve.

Scully Signals: The GuardDog unit requires one 120 VAC input from each Scully Signal Overfill ST-35 and Static Ground ST-47 unit. Each Watchdog unit monitors up to two Scully sets or Truck & Trailer configuration per Load Rack lane.

Pump Command Signals: The GuardDog unit requires one 120 VAC input from each preset unit. Each Watchdog unit monitors up to 8 Pump Command signals per Load Rack lane.