3300/03-03-00

3300/03-03-00 combines the common services of a 3300 system monitor with an internal Dynamic Data Interface. The DDI configuration adds dynamic-data acquisition functions to the serial-interface capability and occupies the system-monitor position. The complete installation depends on an SDI/DDI-compatible rack backplane, an appropriate 3300/12 or 3300/14 supply and compatible firmware in the individual monitors. A matching front panel alone does not establish a compatible system.

Rack supervision covers seven supply rails and provides a front-panel SUPPLIES OK indication. Power-up inhibit suppresses monitor alarms while supplies establish their operating levels; the specified delay is 2.1 ± 1 seconds. External rack inhibit bypasses the monitors, disables alarms, drives outputs to zero scale and de-energizes the system OK relay. System reset is available from the front-panel switch or external contacts on the Power Input Module. Trip Multiply raises Alert and Danger setpoints by 2X or 3X only on monitors ordered with the corresponding option.

Four Keyphasor transducer inputs enter through the Power Input Module. Two signals are available to rack monitors, while all four are available to the DDI; buffered signals are also accessible at the front-panel coaxial connectors. The transducer power is short-circuit protected. The system-monitor -VT jumpers must agree with the power-supply selection of -18 V DC or -24 V DC. Operation is specified from 0 to +65 °C with 0 to 95% noncondensing humidity; configuration and service require the appropriate rack isolation and functional checks.