Toshiba Q9+ - Page 182

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Direct Access Parameter Information
Q9 Plus ASD Install/Op Manual
Virtual Linear Pump External Device Delay Timer
Program Virtual Linear Pump Run External Devices
During a properly configured Virtual Linear Pump operation, this
parameter establishes the time that the Virtual Linear Pump
operating level must remain within the Virtual Linear Pump Maxi-
mum (Threshold) or the Virtual Linear Pump Minimum (Thresh-
old) to activate/deactivate the Sleep Timer (F382) or an auxiliary
pump.
See Figures 31 and 33 for additional information on the Virtual
Linear Pump Maximum (Threshold) and the Virtual Linear Pump
Minimum (Threshold).
Increasing Load
If the Virtual Linear Pump operating level of the Lead Pump is
within the Virtual Linear Pump Maximum (Threshold), and the
External Device Delay Timer times out, OUT1 will change states
and activate an auxiliary pump (Lag1).
Should the Virtual Linear Pump operating level return to the Vir-
tual Linear Pump Maximum (Threshold) threshold for a duration
in excess of the External Device Delay Timer, OUT2 will change
states and activate the second auxiliary pump (Lag2).
Decreasing Load
If operating in the Virtual Linear Pump Minimum (Threshold), and
the External Device Delay Timer times out while OUT2 is acti-
vated, OUT2 will change states and deactivate the second auxil-
iary pump (Lag2).
Should the system return to the Virtual Linear Pump Minimum
(Threshold) for a duration in excess of the External Device Delay
Timer, OUT1 will change states and deactivate the auxiliary
pump (Lag1).
Note: Set the Sleep Timer Delay (F383) to two (2) times the
Virtual Linear Pump External Device Delay Timer (if using
the Sleep Timer function) as not to place the primary ASD
in the sleep mode with Lag1 and/or Lag2 running.
Set OUT1 and OUT2 to External Device 1 and 2, respectively, as
required.
Direct Access Number —
F480
Parameter Type — Numerical
Factory Default — 5.0
Changeable During Run — Yes
Minimum — 0.1
Maximum — 6553.5
Units — Seconds
External
Device 2
External
Device 1
Auxiliary Pump Activation Sequence
PUMP ID IF @ AND THEN OR
Lead Pump Max Zone Counter Time = 0
Activate
OUT1
Lag1 Pump Max Zone Counter Time = 0
Activate
OUT2
Lag2 Pump Max Zone Counter Time = 0
Run
Continuous
Lag2 Pump Min Zone Counter Time = 0
Deactivate
OUT2
Lag1 Pump Min Zone Counter Time = 0
Deactivate
OUT1
Lead Pump Min Zone Counter Time = 0 —
Sleep if
enabled
Note: The number of pumps used
may be increased by using
the optional expansion board
(Primary pump plus auxiliary
pumps).
F480 – F481