Product Description; Functioning; Motor Pump - Pentair NOCCHI CPS 10 Manual

GB
• RS-485 → Communication port
• INI → INIBIT input: NC external
contact or NO for the START/STOP
command
• S.P. → External Set Point (EST)
command: NA contact
• NTC → NTC sensor input to
control temperature
• TRASD. → Input 0÷5 Volts for
pressure transducer
+ → Positive
- → Negative
D → Signal
CHaPter 4

FUnCtioninG

4.1 PRODUCT DESCRIPTION

4.1.1 MOTOR PUMP

• The system is composed of a motor
pump and an electronic control
system (inverter) that enables the
pressure to be maintained constant
in the system, reducing or increasing
the rotation speed of the pump motor
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• When the system pressure goes
below the threshold set, the module
starts the pump to reset the set point
pressure; the rotation speed of the
pump varies based on the water
request, therefore, greater request
requires greater speed, until the
maximum set pressure is reached
• When the request for water
decreases, speed will also reduce
until the pump reaches the minimum
speed set and after which, if there are
no further decreases in pressure
(i.e. new water requests), the pump
will go in stand by until a new cycle
begins