Communication Port; Product Description; Motor Pump - Pentair CPS3-10 MULTINOX VE+ 4-120 Instructions De Service

EN
•
RS-485 → Communication port;
•
→ INIBIT input: NC external
INI
contact or NO for the START/STOP
command;
•
S.P. → External Set Point (EST)
command: NA contact;
•
TRASD. → Input 0÷5 Volts for
pressure transducer
→ Positive
+
- → Negative
→ Segnale
D
If external INI and S.P. inputs are present, they can only be connected to the master (PRI) but they can control also the slave (SEC).
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.
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 standby until a new cycle
begins.
28