Installation manual

42
Connection diagrams
SW3/SW4 logic I/O switch
• Switch in “Source” position • Switch in “Source” position and use of an external +24 Vc
supply
source
• Switch in “Sink Int” position • Switch in “Sink Ext” position
WARNING
UNINTENDED EQUIPMENT OPERATION
When switches SW3 or SW4 are set to “Sink Int” or “Sink Ext”, the common must never be connected to ground or the
protective ground, as there is then a risk of unintended equipment operation on the first insulation fault.
Failure to follow this instruction can result in death, serious injury or equipment damage.
A1
VW3 A3 20p
+24
CLO
LOp
LIp
0V
Ext
Source
Sink
Int
SW3 or SW4
+24V
0V
+24
CLO
LOp
LIp
0V
A1
VW3 A3 20p
Ext
Source
Sink
Int
24 V c supply
SW3 or SW4
A1
+24
CLO
LOp
LIp
0V
VW3 A3 20p
Ext
Source
Sink
Int
SW3 or SW4
+24V
0V
+24
CLO
0V
LOp
LIp
A1
VW3 A3 20p
Ext
Source
Sink
Int
24 V c supply
SW3 or SW4