194
Environment-resistive Terminals (IP66)
Section 5-3
Internal Circuits
The following diagram shows the internal circuits for the DRT1-MD16C (NPN)
Environment-resistive Terminal.
Photo-
coupler
Photocoupler
Photocoupler
DC-DC
converter
(Isolated)
DC-DC
converter
(Not
isolated)
Photo-
coupler
Internal circuitry
Photocoupler
Photo-
coupler
Output 1
Voltage
step-down
V+
CN1
(Communications
connector)
DRAIN
CAN H
CAN L
V–
Output 0
0 V (for inputs and internal circuits)
0 V
(for outputs)
24 V
(for inputs and
internal circuits)
24 V
(for outputs)
CN2
(External power
supply connector)
CN3
(Input connector)
CN7
(Output connector)
Ph
ysical la
y
e
r
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