336
FORM 160.54-M1
ISSUE DATE: 10/25/2019
SECTION 36 - SOFTWARE ENHANCEMENTS
JCI COMPANY CONFIDENTIAL
JOHNSON CONTROLS
The following setpoint changes are not logged:
• Clock Mode
• Custom Screen Slot Numbers
• Advanced Diagnostics Communication Port Tests
• Advanced Diagnostics Secondary Multiplexer
Freeze
• Soft Shutdown Initiated By Operator
• System Language
• Display Units
• Any Print Report
• Cancel Any Print Report
• Schedule Clear
• Schedule Repeat Exception Days
• Schedule Start and Stop Times
• Log In/Log Out
• User Attributes For ID, Password and Level
• Trend Start/Stop
• Trend Slot Numbers, Minimums and Maximums
• Trend Trigger Data
• Trend Print Mode
• Trend View Mode
LEAVING CHILLED LIQUID TEMPERATURE
CONTROL SENSITIVITY SETPOINT
In addition to the NORMAL and 50% selections pro-
vided in previous software versions, a 30% selection
was added to this version. This provides less overall
Pre-rotation Vane (PRV) movement than the 50% selec-
tion by limiting the longest allowed pulse to 3.5 seconds.
This selection can used when the 50% selection does not
reduce the PRV instability to the desired level.
REFRIGERANT LEVEL CONTROL
The following features provide improved level control
stability.
• Level Control Period Setpoint – Now program-
mable over the range of 3.5 to 30.0 seconds. Pre-
viously, it was 1.0 to 5.0 seconds.
• The message WARNING – REFRIGERANT
LEVEL OUT OF RANGE and the associated
lower signal that opens the valve until the level is
within range was eliminated.
SI0019 - SOFTWARE ENHANCEMENTS EFFECTIVE MARCH 2002 (CONT'D)
• The ramp-up feature is now only executed imme-
diately after chiller start. Subsequent ramp func-
tions during chiller run have been eliminated.
• Rate Limit Open Setpoint – Now programmable
over the range of 5% to 50%. Previously, it was
10% to 50%.
• Rate Limit Close Setpoint – Now programmable
over the range of 5% to 50%. Previously, it was
10% to 50%.
• The duration of the open or close pulse applied to the
valve actuator is now independent of the selected pe-
riod setpoint. It is now a fixed percentage of 3.5 sec
-
onds. Previously, it was a percentage of the period
setpoint. Therefore, longer periods would produce
longer output pulses for the same error, resulting in
unstable operation under certain conditions.
COMPRESSOR MOTOR VARIABLE SPEED
DRIVE
• The conditions to produce the HARMONIC FIL-
TER – LOGIC Board OR COMMUNICATIONS
cycling shutdown must now be present for 10 com-
munication cycles before a shutdown is performed.
• If either the 50% or 30% LCLT sensitivity setpoint
is selected, pre-rotation vane movement is further
reduced when the chiller is operating at low load.
When the vane position is less than 25% and LCLT
is within plus or minus 2.5°F of setpoint, the maxi-
mum vane pulse is limited to 3.5 seconds at 25% po-
sition and 0.9 seconds at 0% position. Vane positions
in between have linearly scaled maximums.
•
In previous flash memory card versions, the set fre
-
quency
setpoint feature on the VSD TUNING screen
did not correctly set the desired frequency in 50Hz
applications, which was corrected in this version.
•
Harmonic filter currents are now correctly dis
-
played at maximum values.
HISTORY
CHILLER RUN TIME is now included on HISTORY
DETAILS display and print.
Hot gas bypass
The hot gas valve position is now animated on the Hot
gas bypass screen.