Page 11 di 32
PTU50-51-56 -
electrical connections
6-ELECTRICAL CONNECTIONS
6.1 WIRING
1) Separate the engine control cables or power cables from the PTU5x connection cables
2) Isolate unused wires of the cable.
3) Fully tighten the connector ring nut.
6.2 MOISTURE INFILTRATION
To avoid moisture infi ltration inside the connector it is recommended to:
- Screw the connector nut ring tightly by hand.
- position the cable so that it forms a downward curve; in this way the condensation and/or rain water will tend to drip
from the curve bottom
Brown
GND (0V)
Red
+24 Vdc
White
SDA Display
Yellow
+4÷20mA
Green
A (RS485)
Blue
B (RS485)
Pink
+3.3V Display
Grey
SCL Display
Brown
Green
Yellow
Grey
Red
Pink
Blue
White
