Baldor MN1940 - Manual (Page 22)

www.baldormotion.com
4-6 Input / Output MN1940
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.
INPUT
Optocoupler reference
(white)
Optocoupler reference
(white)
Controller
output
INPUT
+5 to +24 VDC
(see warning)
+5 to +24 VDC
(see warning)
R
LIMIT R
LIMIT
Figure 9 - Sinking input configurations
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.
INPUT
Optocoupler reference
(white)
Optocoupler reference
(white)
Controller
output
INPUT
+5 to +24 VDC +5 to +24 VDC
R
LIMIT
R
LIMIT
Figure 10 - Sourcing input configurations