Non–isolated switch circuits, Current sink control circuit, Low side switch sinks current to ground – Dukane DPC II Plus 9001:2000 User Manual
Page 175
165
Dukane Manual Part No. 403–566–01
Appendix C – User Supplied Circuitry
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+22V
DPC Internal
Power Supply
Current
Limit Circuit
250mA max.
Jumper Block SH707
Position JU724
(Refer to Figure 5–12)
+24V
Internal
DPC II Plus
Circuitry
Optical Isolation
Circuit
Current
Limit Circuit
12.5 mA
max.
12.5 mA
max
4 mA
min
Pin #2 or #7
Isolated Input
DPC Ground
Low-Side
Switch
Sinks Current
to Ground
Pin #3 – Operate
Pin #5 – Press Control
Pin #9 – Auto Stop
User
Supplied
Switch
Circuitry
Non–Isolated Switch Circuits
Current Sink Control Circuit
Figure C–3 illustrates an automation control cir-
cuit connected to the low side of one of the Iso-
lated Automation Inputs. Even though the switch
drives an Opto–Isolator, it is still connected to
DPC ground and not isolated. The SH707 jumper
block is in the factory default postion (JU724).
Any of the examples in Figure C–2 can be used
in place of the block labeled
Low Side Switch
Sinks Current To Ground.
Figure C–3
Current Sink Switch