Vaisala WS425FG User Manual
Page 33
Chapter 3 _______________________________________________________________ Installation
VAISALA_______________________________________________________________________ 31
Power Supply Terminal Blocks
Conducting Off-Line Test
1.
Turn on the AC power to the wind sensor in your system (system
power distribution).
2.
Turn on the power switch in the power supply.
3.
Connect a laptop to the TEST connector in the power supply with
an RS-232 cable. Run the Diagnostics Program on the laptop.
Choose the option that connects the sensor to the laptop with the
system disconnected.
4.
Issue the WA command. The sensor must respond with a P status.
Table 1
Terminal Block 1
TB1
Terminal
Name
Description
1
12.6 V_H1
12.6 VAC transformer, line 1
2
12.6 V_CT
12.6 VAC transformer, center tap
3
12.6 V_H2
12.6 VAC transformer, line 2
4
36 V_H1A
24 VAC transformer, line A
5
36 V_H2A
24 VAC transformer, return A
6
36 V_H1B
24 VAC transformer, line B (internally connected to 36 V_H1A)
7
36 V_H2B
24 VAC tansformer, return B (internally connected to 36
V_H2A)
Table 2
Terminal Block 2
TB2
Terminal
Name
Description
1
TOP_HEAT
Top heater line, switched 24 VAC
2
ENCLOSUREHEATB
Two of two enclosure heater lines, switched 24 VAC
3
ENCLOSUREHEATA
One of two enclosure heater lines, switched 24 VAC
4
RETURN_36VAC_B
Heater return, ground at sensor
5
RETURN_36VAC_A
Heater return, ground at sensor
6
TOP_CTRL
To heater control, >+3 V = ON
7
ENLOSURE_CTRL
Enclosure heater control, >+3 V = ON
8
SENSOR+12V
+12 VDC to sensor
9
SENSOR_TXD
Connect to sensor TX data line
10
SENSOR_RXD
Connect to sensor RX data line
11
GND (12V Common)
Ground return from sensor
12
GND (RS232 Common) Connect to sensor cable shield