ePAC™ II Variable Speed Drive Interface

• Keypad/display
• MODBUS® remote terminal unit (RTU) serial

Performance ePAC II Variable Speed Drive

• Configurable auto restart after power loss or fault condition
• Normal stop with deceleration time and DC injection hold allows rod string to unwind downhole minimizing top side backspin
• Speed search feature minimizes backspin while controlling torque on system
• Differential pressure sensing of pump inlet and casing gas pressure prevents pumpoff conditions
• Low torque detection indicates a rod break, belt failure or plugged sand screen
• Low flow detection for enhanced pump protection (requires surface flowmeter input)
• Quick start menu setup decreases startup time
• Reliable operation
• Enhanced bus voltage control minimizes over voltage trips caused by backspinning loads
• Multiple readout display
• Configurable control methods (open loop vector or V/Hz)