376
FORM 160.54-M1
ISSUE DATE: 10/25/2019
SECTION 36 - SOFTWARE ENHANCEMENTS
JCI COMPANY CONFIDENTIAL
JOHNSON CONTROLS
This warning requires a manual reset when the above
conditions are no longer true. The message “Loss of
Subcooler Liquid Seal Warning Reset” is added to the
Security Log when the warning is reset.
Motor Controller Fault Monitoring
The software will continuously monitor the fault code
registers for as long as a motor controller fault indica-
tion (115V fault signal or ‘fault present’ bit in the com-
ms packet) exists. If the ‘first fault’ code changes, the
panel displays the new code on the System Details line.
If the ‘first fault’ type changes from Cycling to Safety,
the internally posted, generic “Motor Controller” fault
is updated to Safety as well. If the ‘first fault’ type
changes from Safety to Cycling, the internally posted,
generic “Motor Controller” fault remains as a Safety.
In the event of a VSD fault, the panel currently polls
the drive for fault codes and a status snapshot, which
are logged in the fault history. Subsequently, the pan-
el repeatedly attempts “clear fault” commands to the
drive until all VSD fault indications are absent, but it
does not pay any further attention to the fault codes.
This change applies to all motor controller types.
Isolation Valves for Brine Applications
An option has been added to install motorized isola-
tion valves with limit feedback on both the discharge
and the liquid lines. The outputs to both valves will be
placed in parallel. The valve feedback will be placed in
series. When this option is disabled, the outputs will be
placed into the open position and the inputs ignored.
Isolation Valve I/O
BOARD REFERENCE HEADER /
TERMINAL
ITEM
I/O
Board
K6
J19-44 /
152, 153
Isolation Valves
Open Output
I/O
Board
K7
J19-43 /
154, 155
Isolation Valves
Close Output
I/O
Board
U11C
J19-19 /
82, 1
Isolation Valves
Opened Feed-
back
I/O
Board
U11D
J19-20 /
95, 1
Isolation Valves
Closed Feed-
back
Isolation Valve Configuration
PROGRAM
SETTING
SCREEN /
BUTTON MODE
LOW
LIMIT
HIGH
LIMIT DEFAULT
Isolation
Valves
Setup
Screen
Service
Access
Choices:
Disabled
Enabled
Disabled
System Screen Changes for Isolation Valves
The following have been added to the System Screen
to the right of the Evaporator when the Isolation Valves
are enabled.
• Text heading “Isolation Valves”
• LED with label “Closing”
Will be illuminated when “Isolation Valves Close
Output” is energized and “Isolation Valves Closed
Feedback” is not energized.
• LED with label “Closed”
Will be illuminated when “Isolation Valves Close
Output” is energized and “Isolation Valves Closed
Feedback” is energized.
• LED with label “Opening”
Will be illuminated when “Isolation Valves
Open Output” is energized and “Isolation Valves
Opened Feedback” is not energized.
• LED with label “Opened”
Will be illuminated when “Isolation Valves
Open Output” is energized and “Isolation Valves
Opened Feedback” is energized.
Isolation Valve Control
If the Isolation Valves option is enabled:
When the compressor enters prelube and while the
compressor is running:
• Isolation Valves Open output is energized.
• Isolation Valves Close output is de-energized.
When the compressor is stopped, after coastdown:
• Isolation Valves Open output is de-energized.
• Isolation Valves Close output is energized.
SI0271 - SOFTWARE ENHANCEMENTS (VER 25) EFFECTIVE AUGUST 2013 (CONT'D)