Omron DRT1 Series - Page 238

222
B7AC Interface Units Section 5-5
Internal Circuits
3
42
3
24
1
2
31
4
5
DRAIN V−
V+
CAN LCAN H
CN1
1
P
A
B
C
B7AC SIG-IN
3
24
1
B7AC SIG-IN
3
24
1
B7AC SIG-IN
Communications
connector
Physical
layer
Photo-
coupler
Photo-
coupler
DC-DC
converter
(Not iso-
lated)
DC-DC
converter
(Isolated)
Internal circuitry
Photo- coupler
Photo- coupler
Photo- coupler
Input A power supply +24 V
24 V (for internal circuits)
0 V (for internal circuits)
External
power supply
connector
Port A
connector
Port B
connector
Port C
connector
B7AC trans. delay switch
Input A power supply 0 V
Input B power supply +24 V
B7AC trans. delay switch
Input B power supply 0 V
Input C power supply +24 V
B7AC trans. delay switch
Input C power supply 0 V