ACS 300 User’s Manual 25
Chapter 4 - Control Connections
Digital Inputs The ACS 300 digital inputs can be configured for eight differ-
ently wired control modes. The control modes are config-
ured using the PARAM SET parameter and sections A and
B of the I/O option switch, S1 on the control card. The eight
configurations are summarized in Figure 4-3. The following
list indicates the locations of detailed information covering
each configuration.
For PARAM SE = 1, the following configurations can be
selected by S1, A and S1, B settings:
• Standard (Factory Setting), refer to page 26, Figure 4-4,
Table 4-1 and Table 4-2.
• 3-wire, refer to page 27, Figure 4-5, Table 4-5 and Table
4-6.
• Alternate, refer to page 30, Figure 4-6 and Table 4-9 to
Table 4-11.
• Motor potentiometer, refer to page 30, Figure 4-7 and
Table 4-14.
For PARAM SET = 2, the following configurations can be
selected by S1, A and S1, B settings:
• Standard 2, refer to page 27, Figure 4-4, Table 4-3 and
Table 4-4.
• 3-wire 2, refer to page 29, Figure 4-5, Table 4-7 and Table
4-8.
• Alternate 2, refer to page 31, Figure 4-6 and Table 4-12 to
Table 4-13.
• Motor potentiometer 2, refer to page 33, Figure 4-7 and
Table 4-15.
Digital Input Voltage
Digital inputs are activated by closing a switch or relay con-
tact to apply +24 V DC to the input as shown in Figure 4-2 or
by applying +24 to +48 V DC from an external source. The
following discussion assumes that inputs are activated using
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