Vaisala WAC155 - Manual (Page 21)

Chapter 3 _______________________________________________________________ Installation
VAISALA _______________________________________________________________________ 19
Sensor Wiring
The transmitter connects to the wind sensors with the cross-arm's
standard cables through two cable glands. Through these cables the
WAC155 transmitter both feeds the sensor power and receives the wind
data. Plug-in type screw terminal connectors are provided both for the
sensor cables and the output line cable.
Table 2 Power/Control Connector (X2) Pinout
Pin # Signal Description
1 HT1+ Heating supply-1 input
2 HT2- Heating supply-2 input
3 Vin+ Supply voltage input
4 Vin+ Supply voltage input
5 Vin- Ground
6 Vin- Ground
7 RS-485 A(-) RS-485 inverting I/O
8 RS-485 B(+) RS-485 noninverting I/O
Table 3 Wind Direction Sensor Connector (X3) Pinout
Pin # Signal Description
1 HTC Heating common for heater serial connection
2 HT2 Heating supply-2 from connector X2
3 GND Sensor ground
4 D+ Supply voltage output to sensor
5 G5 Gray code input from sensor, bit-5
6 G4 Gray code input from sensor, bit-4
7 G3 Gray code input from sensor, bit-3
8 G2 Gray code input from sensor, bit-2
9 G1 Gray code input from sensor, bit-1
10 G0 Gray code input from sensor, bit-0
11 n.c. Not connected