Instrumentation & Control

1. Incinerator Control System

• Loader operation.
• Modulating system fan air dampers.
• Modulating of secondary burner.
• Primary burners.
• Fire-eye flame controls.
• Temperature controls and lockouts.
• Primary combustion air blower.
• Secondary Combustion air blower.
• Safety and operating interlocks.
• Recorder.

2. Monitoring Equipment

Instruments that are housed in a free standing NEMA 12 control panel complete with power distribution breakers, motor starters, inverter drivers, display modules, cycle counter, control transformers, annunciator, and digital charge timer.

• Primary exit temperature monitor.
• Oxygen monitor.
• Pennram also offers relay logic control systems with control features tailored to the customer’s requirements.The minimum control interlocks furnished with typical Pennram incinerators are listed below.

Automatic Charging Interlocks

• Charge timer.
• Shutdown mode timer.
• Primary temperature limit (high only).
• Secondary temperature limits (high and low).
• Charge hopper proven closed (hopper is closed after filling by pressure hopper close button).
• Hydraulic system manual-auto switch in auto position.
• Air pollution control system interlocks closed.
• Stack cap closed.

Primary Burner Interlocks

• System on.
• Shutdown mode time.
• Primary temperature burner operating limit.
• Primary chamber access door proven closed.
• Charge firedoor proven closed.
• Primary burner off-on-auto switch in on or auto position.
• Air pollution control system interlocks closed.
• Stack cap closed.
• Remote burner switch in on position.
• Post load delay timer.
• Proven primary chamber negative pressure.
• Start up pre-purge interlock.

Secondary Burner Interlocks

• System on.
• Shutdown mode timer.
• Secondary temperature burner operating limit.
• Secondary burner off-on-auto switch in on or auto position.
• Air pollution control system interlocks closed.
• Remote burner switch in on position.
• Start up pre-purge interlock.

Primary Combustion Air Blower Interlocks

• System on.
• Shutdown mode timer.
• Primary chamber temperature operating limit (high only).
• Primary chamber access door proven closed.
• Charge Firedoor proven closed.
• Air pollution control system interlocks closed.
• Stack cap delay timer.
• Post load delay timer.
• Start up pre-purge interlock.

Secondary Combustion Air Blower Interlocks

• System on.
• Shutdown mode timer.
• Air pollution control system interlocks closed.
• Start up pre-purge interlock.
• Secondary chamber operating limit (high only).

Emergency Dump Stack Cap Interlocks

• System on.
• Air pollution system interlocks closed.
• Proven primary chamber negative pressure.

Ash Conveyor Interlocks.

• Ash conveyor switch in auto position.
• Ash ram stroke interlock.