Toshiba Q9+ Installation & Operation Manual page 170

Time-Based Alternation Emergency Timer
Program Virtual Linear Pump Time-Based Alternation
During Time-Based Alternation operation, in the event that the
Lead ASD trips or loses the transducer input signal, this parame-
ter sets a counter time that will count down to zero.
Upon reaching zero, two actions will occur:
1) The Lag 1 ASD will accelerate to the setting of
Accel Time 1 rate — F009.
If the Lag1 ASD is tripped, another timer count begins and upon
reaching zero, the next available ASD will accelerate to the set-
ting of F395.
2) The system will check the load requirement of the Lag1 ASD
(or the next available ASD).
If the Lag 1 ASD load is zero, the ASD will stop.
If a non-zero load is detected, the Lag1 ASD will continue to run
in accordance with the user-set Virtual Linear Pump settings.
Time-Based Alternation
Time-Based Alternation (TBA) is used to provide a more evenly
distributed run-time of the system pumps of a multi-pump sys-
tem. This is accomplished by varying which system pump plays
the Lead role.
Permanently assigning one pump as the Lead pump invariably
results in the Lead pump being over worked and requiring more
maintenance. The TBA algorithm allows the user to set the time
that each pump within the system is to be assigned the Lead
pump function and which are assigned the function of being the
Lag pump(s).
Upon completion of the user-set time, the system changes the
Lead pump assignment to the next pump number (F434).
The Virtual Linear Pump feature allows the Lag pumps to assist
the Lead pump when required as the load exceeds the ability of
the lead pump.
Motor Rated Capacity (Nameplate)
Program Motor Vector Motor Model
This parameter is used to set the (nameplated) rated capacity of
the motor being used.
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F404
Direct Access Parameter Information
Q9 Plus ASD Install/Op Manual
F395
F406
Direct Access Number —
Parameter Type — Numerical
Factory Default — 60
Changeable During Run — Yes
Minimum — 1
Maximum — 65535
Units — Minutes
at the
Direct Access Number —
Parameter Type — Numerical
Factory Default — (ASD-Depen-
dent)
Changeable During Run — No
Minimum — (ASD-Dependent)
Maximum — (ASD-Dependent)
Units — kW
https://www.toshiba.com/tic/
F404
F405