26 ACS 300 User’s Manual
Chapter 4 - Control Connections
the internal 24 V DC supply, but the functions are similar
when an external voltage source is used. Where input status
is indicated as “0” or “1” in the following tables, ‘”0” desig-
nates an open contact or no voltage applied and “1” desig-
nates a closed contact or 24 - 48 V DC applied.
Standard
The ACS 300 comes from the factory preset to standard.
Table 4-1 shows the functions of the digital inputs in stan-
dard mode.
Table 4-1 Standard digital input functions.
Figure 4-4 Standard switch S1 selection.
Table 4-2 Constant speed selection.
Digital input Function Notes
DI1 Start / Stop Connect +24 V DC to start
DI2 Reverse Connect +24 V DC to reverse
DI3 CS Constant speed (= CS) selection,
refer to table 4-2
DI4 CS
DI5 ACC2/DEC2 0 V = ramp1 and +24 V DC = ramp2
DI3 DI4 Result
0 0 Speed reference from AI1
1 0 Constant speed 1
0 1 Constant speed 2
1 1 Constant speed 3
OFF ON
0 1
Standard (Default)
A
B
C
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