WIKA A-AI-2 User Manual
Page 14

6 Commissoning, operation
14
WIKA operating instructions, model A-AI-2
6.1.2 Connection
example
Please take care that you must not exceed the limits of the voltage and of the maximum current 
of the switching outputs (not even for a short period of time). 
Please take extreme care when switching inductive loads (like coils or relays, etc.) because of their 
high voltage peaks, protective measures to limit these peaks have to be taken. 
When switching large capacitive loads a series resistor for current limitation needed, because of the 
high turn-on-current of high capacitive loads. The same applies to incandescent lamps, whose turn-
on-current is also quite high due to their low cold resistance. 
 
 
Connecting to current loop and switching of a relay (A-AI-2-1) 
 
combined power supply for measurement section 
and output section 
separate power supply for measurement section and 
output section 
 
Connecting to current loop (A-AI-2-S) 
