Control - Johnson Controls FRICK QUANTUM HD Operation

090.040-O (MAR 12)
Page 50
ACCESSING:
DESCRIPTION: This screen is used to set Sequencing
control, and will be available if Sequencing is enabled in
Compressor confi guration.
The following setpoint boxes appear on this screen:
• Average Capacity Slide Position to Start Next
Compressor - If more than one compressor is
running and the Average Capacity is greater than
this setting, the next compressor in line can be
started, if needed.
• Full Load Capacity Slide Position - This setpoint
represents the Capacity Slide Valve Position at
which this machine will be considered at full load
capacity.
• Full Load Drive Speed Position - This is the
speed value at which the compressor will be
considered at full capacity by speed.
QUANTUM™ HD COMPRESSOR CONTROL PANEL
OPERATION
CONTROL SETPOINTS
Sequencing Control - Control
Sequencing Control

Control

• Minimum Capacity Dead Band - This is the
dead band above and below the Minimum Ca-
pacity % setpoints that the controller will load or
unload. If the Minimum Capacity % is 40% and
the dead band is 1%, the controller will unload
above 41% and load below 39% Capacity Slide.
• Start Failure Reset Delay - This is the time that
needs to pass after a sequencing start fails be-
fore the compressor is available to be back in the
sequence operation.
• Slide Valve Failure Delay - If the compressor
is unavailable to start based upon the Capacity
Slide Position, the sequencing will move on to
the next compressor in order.