Frick QUANTUM - CONTROL SETUP - MOTOR CONTROL SETPOINTS - Turbine SCREEN

FRICK QUANTUM CONTROL PANEL
OPERATION
S90-010 O
Page 26
Low RPM Shutdown - If the RPM is less than or equal to
this setpoint, for the shutdown time delay, the compressor
will shut down.
Low RPM Alarm Delay - The minimum time in seconds that
the RPM is less than or equal to the Low RPM alarm set-
point before notification of the alarm.
Low RPM Shutdown Delay - The minimum time in seconds
that the RPM is less than or equal to the Low RPM shut-
down setpoint before the compressor will shut down.
Confirmed Running (RPM) - The value that the RPM is
greater than or equal to consider the compressor running.
Starting Maximum Delay - The time delay required for the
Slide Valve to unload below the “Highest Slide Valve posi-
tion to allow starting the compressor” setpoint and the en-
gine RPM’s to reach the “confirmed running” RPM’s set-
point.
NOTE: See “Electric, VFD, Engine, Turbine” flowchart for
further information.
CONTROL SETUP - MOTOR CONTROL SETPOINTS - “Turbine” SCREEN
Hardware Signals
4 – 20 ma analog output - Signal from the Quantum to
provide the speed setpoint to the speed governing device.
The speed governing device’s controller (i.e. Electronic Gov-
ernor) and hardware will need to be configured to the mini-
mum and maximum desired speed. The minimum speed
will vary depending on compressor type, consult the factory
application assistance.
4 – 20 ma analog input - Analog input channel on the
Quantum to monitor the actual RPM’s of the drive. This sig-
nal can be sent to the Quantum from the speed governing
device if available or generated from a magnetic pickup
located on the flywheel teeth wired to a frequency to 4-20
ma converter.
Setpoints related to the Turbine speed control output
Maximum output - Setpoint used to select the maximum
operating speed. Selectable from 1-100% of the Quantum’s
4-20ma signal.
Minimum output - Setpoint used to select the minimum
operating speed. Selectable from 1-100% of the Quantum’s
4-20ma signal.
Rate of change - Setpoint used to adjust the speed changes
sent to the VFD based on the capacity control requirements.
Selectable from .1-25% of the 4-20ma signal.
Cycle Time - Setpoint used in conjunction with the “Rate of
change” setpoint to adjust the time between speed changes
sent to the VFD. Selectable from 1-30 seconds.
Slide Valve Position to begin Speed Increase - The Slide
Valve position which must be obtained before the speed
will begin to increase. Selectable from 0-100% of the com-
pressors Slide Valve position. This setpoint is used in con-
junction with the “Drive Output at Max SV position”.
Drive Output at Max SV position - The desired speed of
the engine/turbine when the Slide Valve position reaches
100%. This setpoint is selectable from 1-100% of the
Quantum’s 4-20ma signal and is used in conjunction with
the “Slide Valve Position to begin Speed Increase”.
High RPM Alarm - If the RPM is greater than or equal to this
setpoint, for the alarm time delay, an alarm occurs.
High RPM Shutdown - If the RPM is greater than or equal to
this setpoint, for the shutdown time delay, the compressor
will shut down.