Astralpool OPTIMA PLUS Manual De Instalación página 4

B
ModBus connetion
Pin N° Description
1 T+R+
2 T-R-
3 GND
4 Not used
EM00136408
Electrical connections
rev. 1.0
1
Alarm relay
2
3 Pole +
4 Pole -
5
Remote control input (start-stop)
6
7
Temperature probe input
8
9
Flow sensor input
10
B Input level control
4-20 mA Output
max 500ohm
2