Vertiv Liebert iCOM - Page 236

Line
ID
Parameter
Name
Range
Default
Setting
Description
S518
Cascaded Units
Control Delay
0 - 30 min 5 min
This is the amount of time that must surpass before the normal unit control is used once a
standby unit has been cascaded ON.
S519
Cascaded Units
OFF Delay
0 - 360 min 0 min
This timer starts to count down once a cascaded ON system has received an OFF request
from the master. The cascaded unit will stop after this timer and S520 have elapsed.
S520
Cascaded Units
Min Run
2 - 360 min 30 min
Once the cascaded system is energized, this is the minimum ON time that it will run before
staging OFF.
S521
Start Next Unit
at SYS
Fanspeed
50 - 100% 100%
When the system (network) fan speed operates at or above S521, the S516 timer is started.
Once S516 has elapsed, the next single unit will energized.
NOTE: Fan speed must be continuously at or above the value set in S521, The timer
restarts any time the fan speed falls below.
S522
Max.
Intermediate
System Speed
50 - 100 % 100%
Defines the value to which the system (network) fan speed may increase when not all
units in the network are in operation.
S523
Stop Next Unit
SYS Fanspeed
20 - 70 % 70%
When the current System (network) fan speed operates at or below S523, two timers must
elapse before the cascaded ON unit turns OFF; S519 and S520.
S524
Cascaded Units
OFF Master
Delay
0 - 360 min 1 min
In the event that the Virtual Master takes control, the new Master unit shall control staging
OFF of the currently operating units for the amount of time set in S524. After S524 time
has elapsed, S519 value is used.
Table B.3 Service Menu Cascade Parameters by Line ID (continued)
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Vertiv™ Liebert® iCOM™Installer/User Guide