Bell & Gossett 176R0649C Technologic 502 Series Pump Controller - Manual (Page 44)

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39-53 No. Of Pumps In Duty
Standby
0 2 1 - C4
0 - else
The number of pumps that must remain
idle during operation. The controller
will rotate between pumps but will not
turn on more than then total number of
pumps minus this number.
39-54 % Full Speed 0 ->
0Hz
100% -> 50/60Hz A display of the current % of full speed
of the Drive. 100% = 60Hz. This is used
by fieldbus communications.
39-55 Run Signal
- Local
- Remote
0 1 1 This parameter allows the system to be
run in local mode without an external
start signal. It is used for dianostics
and to run the system in the event of
a remote controller failure. Selecting
Local allows the motor to start and run
in closed loop control just by pressing
AutoOn. Selecting Remote requires a
remote start signal through Pin18 or
from a fieldbus.
39-6* Pressure
Suction
Feat.
39-60 Low Suction Cut-Out Time
(Old Par. 773)
0s 999s 30s When control voltage is applied to
digital input 19, the controller will
display WARNING, LOW SUCTION
CUT OUT. After the time delay set in
this parameter, the controller will stop
all pumps and display ALARM, LOW
SUCTION CUT OUT. If parameter P14-
20 is programmed for automatic restart,
after the low suction cut-out signal is
removed and the timer set in parameter
P14-21 expires, the drive will restart.
39-61 Low Suction Cut-Out
Pressure
0.0 Depends on
P3965
0.0 If a Suction Pressure source is selected
in P39-65 then this parameter sets the
pressure below which the timer in P39-
60 is started. If the timer expires while
the suction pressure remains below this
value then the system is turned off.
39-62 High Suction Cut-Out Time 0s 999s 0s This is the timer used to determine if
the pumps should be shut off because
they are no longer needed to maintain
output pressure.
Table 6-2. Parameter 39-** Group, Detailed Description (continued)