Baldor DSM S Series Installation Manual Page 23

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Input / Output 4-7MN1940
NextMove ESB
(models NSB003-501 / NSB003-502 only)
STEP0
ULN2003
Step
Output
74AHCT244
GND
3
DSM
Optocoupler
reference
Step clock
input
+5 V
4
+5 V
DIR0
ULN2003
Direction
Output
74AHCT244
GND
5
Direction
input
REL NC
7
Enable input
‘X2’
‘X12’
+5 V
REL COM
1
DGND
8
Enable
1k*
1k*
Figure 11 - Sourcing input connections from a typical controller
(e.g. NextMove ESB models NSB003-501/502)
Note: * The 1k pull up resistors are optional, but can help prevent noise affecting the
DSM’s inputs.
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