Prozeda Primos 250 SR - Terminal Assignment to System Components

Connecting the controller
16
4.4 Assignment of the terminals to the system
components
The connections in the following table are options that may be used in all hydraulic layouts:
Terminal
Use
S4 / S4 Temperature sensor for the collector return for the "Energy output measurement"
function
B
A
RS-485- interface (ProBusX)
Make sure that the polarity of the bus connection is not mixed up (A-A, B-B). Use paired
twisted-conductor cables for connection
M1
HE1
Power control for high-efficiency pump (HE pump) 1.
HE1=Signal
M1=GND
230 V power supply for the pump via switching output R1.