Remote Capacity Control Chart - Johnson Controls FRICK QUANTUM LX Operation

090.022-O (MAY 12)
Page 94
to control the compressor from another control-
ler such as a PLC:
• (Module 1) - Ready to Run - This out-
put is energized while the compressor
is not shutdown and the Recycle Delay
has timed out.
• (Module 2) - Remote Enabled - This
output is energized while the compres-
sor is in Remote Start mode.
• (Module 3) - Remote Start / Run /
Stop - If the compressor is in Remote
Start mode with no Recycle Delay time
and this input is energized, the com-
pressor is started. If this input is ener-
gized and the compressor is started, it
will continue to run. If this input is de-
energized, the compressor is stopped.
• (Module 4) - Remote Load or Remote
C.C step 1 for step units
• Remote Load - If the Slide Valve
is in Remote Mode and this input
is energized, the Slide Valve load
solenoid will be energized provided
there are no safety overrides pre-
venting loading.
• 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
Capacity Control chart.
• (Module 5) - Remote Unload or Re-
mote C.C step 2 for step units
• Remote Unload - If the Slide Valve
is in remote and this input is ener-
gized, the Slide Valve unload sole-
noid 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
Capacity Control chart.

Remote Capacity Control Chart

Input \ %Capacity
3-Step Input 4
3-Step Input 5
4-Step Input 4
4-Step Input 5
• (Module 6) Recycle Delay (If compres-
sor is off) - This output is energized
while the remaining time in minutes for
Recycle Delay is greater than zero (0).
Recycle delay time is the time that must
elapse prior to allowing the compressor
to restart. This timer times out while
QUANTUM™ LX COMPRESSOR CONTROL PANEL
OPERATION
25 50 75 100
OFF OFF ON
OFF ON ON
OFF ON OFF ON
OFF OFF ON ON
the compressor is running or stopped
since the Recycle Delay is a start-to-
start protection. It is intended to pre-
vent 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 Bypass option can be used. This option
is not available for all compressor models (Reference
090.020-M; Compressor Model Differences).
The Remote Control Setpoint option can be used.
This option, which is enabled in Panel Setup, is not
available for all compressor models (Reference Com-
pressor Model Differences). This uses the Remote
Control Setpoint analog input and the Remote Control
Setpoint analog output for Capacity Control of com-
pressors. For further setup see the Calibrate Remote
Control Setpoint screen and the [Remote 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 Com-
pressor Model Differences). This uses a (4-20 ma) in-
put 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 [Remote 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 % dependent on the compressor model
(Reference Compressor Model Differences). A (4-20
ma) input signal to the Slide Valve Position \ Capacity
analog output (Channel #13 on Analog Board #1) cor-
responds to the present (%) value displayed on the
Operating Status screen.
ASCII communication to the Com-2 port can be used
(reference 090.020-CS Communications Setup man-
ual). A compressor should be in both Remote Com-
pressor Mode and Remote Slide Valve or Capacity
Mode for Remote Control.
Note 1: If the compressor is in Remote mode and
communication through the communication port has
not occurred for 5 minutes, then the compressor is
placed into Automatic mode and the Slide Valve is
placed into Auto mode.
Note 2: If there is a shutdown in response to a safety
setting, a compressor in Remote mode is placed into
Manual mode requiring operator intervention.