Spirax Sarco TVA Series - Page 25

IM-P192-02 MI Issue 2 25
Fig. 21 TVA with EIA 485 (RS485) Communications wiring diagram
-
Power supply 24 Vdc (19 - 28v) 50 mA maximum
+
GND data
B - data
A + data
Note: Do not reconnect loop
power supply to these terminals
when RS485 board fitted.