FRICK QUANTUM CONTROL PANEL
OPERATION
S90-010 O
Page 73
• Remote C.C step 1 for step units - If the Capacity
Mode is in Remote, this input is used to step on
and off capacity according to the Remote Capac-
ity Control chart.
• (Module 6) Remote Unload or Remote C.C. step 2 for
step units
• Remote Unload - If the Slide Valve is in remote
and this input is energized, the Slide Valve unload
solenoid will be energized.
• Remote C.C step 2 for step units - If the Capacity
Mode is in Remote, this input is used to step on
and off capacity according to the Remote Capac-
ity Control chart.
Remote Capacity Control Chart
Input \ %Capacity 25 50 75 100
3-Step Input 4 OFF OFF ON
3-Step Input 5 OFF ON ON
4-Step Input 4 OFF ON OFF ON
4-Step Input 5 OFF OFF ON ON
• Recycle Delay (If compressor is off)- This output is en-
ergized while the remaining time in minutes for Re-
cycle Delay is greater than zero. Recycle Delay time is
the time that must elapse prior to allowing the com-
pressor to restart. This timer times out while the com-
pressor is running or stopped since the Recycle Delay
is a start-to-start protection. The Recycle Delay time is
intended to prevent damage to the motor from succes-
sive restarts. For further setup see the “Motor Control
Setpoints” screen.
• Sequence Input - (If compressor is on) – Reports the
status of Stop Load or Force Unload (See Slide Valve
and Slide Stop Status box for further details).
The “Hot Gas Bypas/SV Setpoint” option can be used. This
option, which is enabled in Panel Setup, is not available for
all compressor models (Reference “Compressor Model Dif-
ferences”). Three digital outputs are provided that signal
when the Slide Valve has reached preset positions. For
further setup see the “Slide Valve Setpoints” display.
The Remote Control Setpoint option can be used. This op-
tion, which is enabled in Panel Setup, is not available for all
compressor models (Reference “Compressor Model Dif-
ferences”). This uses the Remote Control Setpoint analog
input and the Remote Control Setpoint analog output for
Capacity Control of compressors. For further setup see the
“Calibrate Remote Control Setpoint” screen and the [Re-
mote Setpoint] command key from the Slide Valve Mode
screen command keys on the “Operating Status” screen.
The Remote Slide Valve Position option can be used. This
option, which is enabled in Panel Setup, is not available for
all compressor models (Reference “Compressor Model Dif-
ferences”). This uses a (4-20 ma) input signal to the Remote
Slide Valve Position analog input (channel 13 on Analog
Board #1) to control the slide valve. For further setup, see
the “Calibrate Slide Valve Position” screen and the [Re-
mote Slide Valve] command key from the Slide Valve Mode
screen command keys on the “Operating Status” screen.
The Slide Valve Position \ Capacity analog output can be used to
determine the present Slide Valve position % or Capacity % depen-
dent on the compressor model (Reference “Compressor Model
Differences”). A (4-20 ma) output signal to the Slide Valve Position
\ Capacity analog output (Channel #3 on Analog Board #1) corre-
sponds to the present percent (%) value displayed on the “Oper-
ating Status” display.
ASCII commands (See “Microprocessor Telecommunica-
tions) using serial communication to the Com-2 port can be
used. A compressor should be in both Remote Compressor
Mode and Remote Slide Valve or Capacity Mode for remote
control.
Note: If the compressor is in “Remote” mode and com-
munication through the communication port has not oc-
curred for five minutes, then the compressor is placed
into “Automatic” mode and the Slide Valve is placed into
“Auto” mode.
Note: If there is a shutdown in response to a safety set-
ting, a compressor in “Remote” mode is placed into
“Manual” mode requiring operator intervention.
To Next Page
Loading...
