382
FORM 160.54-M1
ISSUE DATE: 10/25/2019
SECTION 36 - SOFTWARE ENHANCEMENTS
JCI COMPANY CONFIDENTIAL
JOHNSON CONTROLS
The following settings are displayed on the Power
Fault Recovery Screen:
b. If coastdown is complete, and the Time
Since Coastdown completed is < 2 minutes
quick restart is initiated. If the Time Since
Coastdown is > 2 minutes, a Quick Normal
Start (prelube and quick loading) is initiated.
A quick restart without prelube is initiated for 30
seconds. To do a quick restart within this 30 sec-
ond time period, the following must be true:
• Oil Pressure > 25 psid
• VSD has completed precharge (Trigger SCR
Output is enabled)
• Chiller start signal is present (local or re-
mote)
• No faults/inhibits present
• Chilled liquid flow is present
For both of the above situations (a or b) if all of
the above conditions are not met within 30 sec-
onds, Quick Start will revert to a Quick Normal
Start.
If the Panel Switch is placed into the STOP/RE-
SET position, Quick Start operation shall be can-
celled and the next start will be a Quick Normal
Start.
3.
On the Sales Order Screen, the field descriptor has
been changed for Tubes to Tubes Code.
4. The LCSSS communications has been changed
for Modbus ASCII to Modbus RTU.
PROGRAM
SETTING
SCREEN
MODE
LOW
LIMIT
HIGH
LIMIT
DEFAULT
VSD Low Frequency
Fault Time
Power Fault
Recovery -
Button 8
*
60 sec
120 sec
60 sec
CASL VSD Speed
Percentage
Power Fault
Recovery -
Button 9
*
80%
100%
93%
NOTE:
* Visible in view mode, but only editable in Admin access level and above.
These setpoints have also been added to the Setpoints
report and the History log in the MVVSD section.
The VSD Low Frequency Fault Time will adjust the
amount of time that the VSD speed can be below the
minimum speed. When Power Fault Recovery Control
is not enabled, this setting will have no affect and the
Low Frequency Fault will be the standard time of 25
seconds.
FIGURE 120 -
POWER FAULT RECOVERY
SCREEN
LD18178
Other Changes
1. Head Pressure control can now operate when a
Heat Pump is in the cooling mode.
2. Bootup of the panel after power restoration on
chillers with Quick Start, but no UPS:
a. If coastdown is not complete, quick start pro-
ceeds as normal with a quick restart occurring
within 30 seconds of the end of coastdown.
SI0283 - SOFTWARE ENHANCEMENTS (VER 26) EFFECTIVE APRIL 2014 (CONT'D)