Sinking / Sourcing Input Configuration - Baldor DSM S Series Installation Manual

4.3.3 Sinking / sourcing input configuration

All DSMS17, 23 and 34 models can be wired to create sinking inputs, where a reference
voltage between +5 and +24 VDC is connected to the Optocoupler Reference (white) lead.
The isolated inputs are then interfaced to a sinking output (which utilizes the same supply as
the opto coupler reference input) such as a switch, open collector, or PLC output. To maintain
isolation, the input power source should not be connected to the motor power source.
+5 to +24 VDC
(see warning)
Optocoupler reference
Alternatively, sourcing inputs may be used where the Optocoupler Reference (White) lead is
connected to ground. The isolated inputs are then sourced to between +5 to +24 VDC from a
switch, open collector, or PLC output.
+5 to +24 VDC
Optocoupler reference
(white)
4-6 Input / Output
(white)
R
LIMIT
INPUT
Figure 9 - Sinking input configurations
R
LIMIT
INPUT
Figure 10 - Sourcing input configurations
+5 to +24 VDC
(see warning)
Optocoupler reference
(white)
R
LIMIT
Controller
output
+5 to +24 VDC
Controller
output
R
LIMIT
Optocoupler reference
(white)
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INPUT
INPUT
MN1940