beautypg.com

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

background image

165

Dukane Manual Part No. 403–566–01

Appendix C – User Supplied Circuitry

+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