Emerson Liebert iCOM, Manual

Page: 126 / 172

Service Menu Parameters
Liebert
®
iCOM
®
for Liebert DSE
™
118
S508 Cascade Units —Allows units to activate in Standby mode if the room temperature cannot be
maintained by the non-standby units. If “Yes” is selected, the cascaded units can perform all functions
when activated from standby. This parameter can also be set for Cooling Only or Cool / Heat / Fan
(available in TW3 only).
S509 Cascaded Units Delay —Sets the delay time to stage on each unit as they are staged on during
increased demand. When the first unit is started and the cooling request is high enough to start the
timer is started and once the timer has expired the next unit will start. This parameter range is 0-30
minutes. The default is 5 minutes.
S510 Cascaded Units Quick Start —Sets a delay to the staging on each unit after a power cycle of
the master unit. This is used to get the units to start faster after a power cycle and use this parameter
instead of S509. When the master unit is started and the cooling request is high enough to start the
timer is started and once the timer has expired next unit will start. The control will not revert back to
S509 until all required units have been restarted in cascade. This parameter range is 0-30 minutes.
The default is 2 minutes.
S511 Cascaded Units Min Run —Sets a minimum run time after a commanded unit is turned On.
The timer must expire before the unit can go back into standby. This parameter range is 2-360
minutes. The default is 30 minutes.
S512 Cascaded Units Control Delay
Teamwork Mode 1: Mode C : once the unit was started, the fanspeed control will start
immediately, but the cooling / humidity control will be delayed by the value set in S512 Cascaded
Units Control Delay. Mode B : the S512 timer is ignored; a cascaded unit starts control w/ no
delay.
Teamwork Mode 3: All Modes: When the cascaded standby unit was started, the normal unit
control is delayed by the value set in S512 Cascaded Units Control Delay. During this delay time,
the fanspeed control and the cooling control uses the shared System values (based on AVG or
MAX); heat, hum and dehumidification is disabled When the S512 timer has elapsed, the unit
transitions to normal unit control, which is depending on the operating mode. This parameter
range is 0-30 minutes. The default is 5 minutes.
S513 Start all Standby Units by HT —Activates all units to cool when a High Temperature Alarm
occurs.