Manual

Installation Instructions for Innotech IG04 BACnet Gateway and Vaisala Transmitter / Sensor
Page 10 © Mass Electronics Pty Ltd 2011Edition 5.0 dated 11/11/2013
Table 2: Screw Terminal Pin-outs for WXT520 / WMT52
Screw Terminal Pin RS-485
1 RX- RX-
2 RX+ RX+
3 TX- RX-
4 TX+ RX+
5 RXD
6 SGND
7 EXH
8 EXL
9 SIPB
10 SIPA
11 SR-
12 SR+
13 PT-
14 PT+
15 AGND
16 AGND
17 HTG- Vh- (heating GND)
18 HTG+ Vh+ (heating supply voltage)
19 VIN- Vin- (operating GND)
20 VIN+
Vin+ (operating supply
voltage)
Exact minimum cable specications for power supply will vary, and are installation specic. Ensure to select the correct
cable to carry the current load as required.
NOTE NOTE
Vaisala Device Screw Terminal Pin-Outs
Please take extreme care to ensure when installing and wiring that the wire colours and terminals correctly match
as illustrated in Figure 1 or Figure 2, and described below in Table 2. Refer to the appropriate Vaisala technical
documentation for more details at www.vaisala.com.
NOTE NOTE