Emerson Liebert PEX+ Series - Standby; Wellness

36 Chapter 5 iCOM Controller
Liebert. PEX+Series Precision Air Conditioner User Manual
Parameters
Default
Setting range
Description
S168
BACKDRFT
No
No,Yes
Fan Back Draft Control
S169
VSD BDR
1.5V
0.1 - 5.1V
VSD Set point BACK DRAFT
S171
NO BDR 1
3.5V
0.0 - 5.0V
Not Selectable Zone 1
S172
NO BDR 2
0.0V
0.0 - 5.0V
Not Selectable Zone 2
S173
BDR SOFF
No
No, Yes
Stop BDR when System is Off
S174
REM BDR
Off
Off,BDR
Remote Off at BDR
S175
DISP BDR
Off
Off,BDR
Display Off at BDR
S176
BMS BDR
Off
Off, BDR
BMS Off at BDR
S177
LOC BDR
Off
Off,BDR
LOC Off at BDR
S179
CtrlType
no
Tight, Std, no
SCR Control Type
S180
Co1 on
0%
-100/+100%
Start 1st Compressor at
S181
Co1 off
-200%
-200/+50%
Stop 1st Compressor at
S182
Co1 TD
20 min
0 - 30 min
1st Compressor stop delay
S183
Co2 on
100%
-100 / +100 %
-
S184
Co2 off
0%
-200 / +50 %
-
S185
Co2 TD
0 min
0-30min
-
S186
CycleT
20 sec
1.0 - 200.0 sec
-
S187
SCRFact
1.0
1.0-10.0
-
S188
Act SCR
-
0-100%
-
5.7.3 STANDBY
The parameters of the STANDBY menu are described in Table 5-12.
Table 5-12 Descriptions of STANDBY parameters
Parameters
Default
Setting range
Description
S502
#STANDBY
1
0 ~ 31
Number of standby units
S503
ROTATION
Daily
No, Daily,
MON ~ SUN,
M - MON ~ M
- SUN
Rotation frequency setting of the running and standby units. Range:
Daily: rotate once a day.
MON ~ SUN: rotate once a week. The rotation occurs on Monday ~ Sunday
of the week. For example, MON means rotation occurs on Monday of every
week.
M - MON ~ M - SUN: rotate once a month. The rotation occurs on Monday ~
Sunday of the first week of the month. For example, M - MON means rotation
occurs on Monday of the first week of every month
S504
ROT HOUR
hr
-
Used to set the hour of the detailed time while rotation
S504
ROT MIN
min
-
Used to set the minute of the detailed time while rotation
S505
ROT BY
1
1 ~ 8
The unit number for a rotation
S506
STBY FT
1 min
1 - 5 min
Stdby Fan Timer at Reheat/Hum
S507
DO ROT
No
Yes, No
Perform one rotation
S508
CASCADE
No
CO/HE,
Cool, Yes,
No
Cascade function selection. ‘Yes’ corresponds to temperature and humidity
control and ‘no’ corresponds to closing the cascade
S509
CAS DEL
5 min
0 - 30 min
Cascaded Units Delay
S510
CAS QUI
2 min
0 - 30 min
Cascaded Units Quick Start
S511
CAS MIN
30 min
2 - 360 min
Cascaded Units Min Run
S512
CAS CTRL
5 min
0 - 30 min
Cascaded Units Control Delay
S513
STBY HT
No
0 = No
1 = Yes
Start all Standby Units by HT
5.7.4 WELLNESS
The iCOM controller calculates the bonus and penalty over the equipment maintenance based on the parameters in
the WELLNESS menu and the equipment operation historical data, so as to find out the next system maintenance
time.
Informing the maintenance personnel of the maintenance time makes the air conditioner run in the optimal mode,
which reduces the chances of faults and raises the system reliability.