CROWD BRAKE SOLENOID VALVE

• Drives Power Contactor (I 32.7)

DPC signal is an auxiliary contact input of the DPC output contactor. DPC Contactor is the main contactor for power delivery to all Active Front Ends (AFEs) and all drives.

• Transfer Switch in Dig (I37.0) • Hoist Brake Valve (Q 16.0)

A “1” at this output activates Hoist Brake Solenoid Valve and releases brake.

Crowd Brake Solenoid Valve

• Crowd Drive Minimum Current (DB3411.dbx0.4) • Crowd Drive On (To SiBas) (Q24.0)

This is a command bit to SiBas to turn on the Crowd drive.

• Crowd Brake Valve (Q 17.7)

A “1” at this output activates Crowd Brake Solenoid Valve and releases brake. • Crowd Speed < 2.5 Hz (Db3411.dbx1.7) • Crowd In Regeneration (DB3418.dbx 1.2) • Crowd Gate Blocked (DB3418.dbx0.1)

Crowd Gate Blocked signal from SiBas indicates either a Crowd drive fault or Crowd drive is not on.