9905 Motor Nom Voltage:
This is the nominal voltage
stated on the motor nameplate. If the motor is rated for
operation at multiple voltages, select the voltage nearest
the utility voltage. Ensure the motor connections corre-
spond to the voltage selected.
9906 Motor Nom Current:
This is the nominal current
found on the motor nameplate. Do not use service factor
amps.
9907 Motor Nom Freq:
This is the nominal frequency
found on the motor nameplate.
9908 Motor Nominal Speed:
This is the nominal speed
found on the motor nameplate. Use the number on the
motor nameplate. Do not enter 3600, 1800, etc.
9909 Motor Nom Power:
This is the nominal horsepower
found on the motor nameplate. Do not include service
factor unless the service factor is greater than 1.15.
2001 Min Speed (Required for Subs only):
This is the
minimum speed the motor is allowed to run. This mini-
mum is set to prevent damage to the motor thrust bear-
ings. Refer to motor literature to determine setting.
4011 Internal Setpoint:
This is the pressure the system
will maintain.
4009 100% Value:
This is the full scale reading of the
transducer. Ie. The 100% Value of a 200PSI transducer is
200PSI.
4023 PID Sleep Level:
Operation below this rpm will
cause the drive to stop.
4025 Wake-Up Dev:
This is the pressure drop that will
trigger the drive to restart. For example, if the set point is
60 PSI and the Wake-Up Deviation is 10 PSI, the drive
will restart at 50 PSI.
Timer Function:
The BERKELEY VFD includes four timer functions. Each
timer function can include up to four daily / weekly start
and stop times.
The following example show the parameter changes
required to use PID Set 2 on Monday, Wednesday, and
Friday from 8:00 AM to 10:00 AM.
Parameter
Setting
3601 – Timers Enable ................7 – Enabled
3602 – Start Time 1 .................. 8:00 AM
3603 – Stop Time 1 .................... 10:00 AM
3604 – Start Day 1 .................... 1-Monday
3605 – Stop Day 1 .................... 1-Monday
3606 – Start Time 2 .................. 8:00 AM
3607 – Stop Time 2 .................... 10:00 AM
3608 – Start Day 2 ...................... 3-Wednesday
3609 – Stop Day 2 .................... 3 – Wednesday
3610 – Start Time 3 .................. 8:00 AM
3611 – Stop Time 3 .................... 10:00 AM
3612 – Start Day 3 .................... 5-Friday
3612 – Stop Day 3 .................... 5-Friday
3626 – Timer Func1SCR .......... 7 = P3 +P2 + P1
4027 – PID 1 Param Set ............ 8 = Timer Function 1
DESCRIPTION OF INFORMATION REQUIRED
BY THE
BERKELEY ASSISTANT
These instructions are only for systems that require tanks. Pressure tanks are generally required to maintain system pressure
during periods of low or no demand. Tank precharge must be less than the pressure set point – wake up deviation.
The tank can be sized using Boyle’s law (V1 x P1 = V2 x P2). Units are in gallons and PSI.
Drawdown =
Total Tank Size x (Pr14.7)
Total Tank Size x (Pr14.7)
(Se 14.7 – Wake Up Deviation)
(S14.7)
Typically tanks are sized for approximately 20% of pump capacity. For example, a 150 gpm pump typically requires 30
gallon total tank size.
TANK SIZING
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