Active High/Low Description - Baldor 29M Installation And Operating Manual

Section 1
General Information

Active High/Low Description

Note: These pins are shown wired together. Although this can be done, each input is usually connected to a switch for
individual control of each input condition.
MN1230
A customer supplied power source is required for operation of the Opto Inputs. The V
and GND inputs are optional and are not provided with this control.
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Active High - If pin 19 is grounded, an input is active when it is at +24VDC
(+10VDC to +30VDC).
Active Low - If pin 19 is at +24VDC (+10VDC to +30VDC), an input is active when it
is grounded.
Figure 3-6 Active HIGH/LOW Relationship
Active Low Active High
GND V
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(Sink) (Source)
+24VDC GND
GND +24VDC
J1B
Pin 19 - CREF
Pin 8 - Enable
Pin 9 - FWD
Pin 10 - REV
Pin 11 - IN1
Pin 12 - IN2
Pin 13 - IN3
Pin 14 - IN4
Pin 15 - IN5
Pin 16 - External Trip
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Installation 3-11