Baldor iMN1921 Stepper outputs, Stepper axes 0-2 drive outputs, Connecting a 4-wire motor

4.3 Stepper outputs

The NextMove ST provides three 37VDC (max), 2A stepper axes drive outputs, operating at 10Hz to 200kHz. Logic level outputs are provided to control a fourth stepper axis.

If required, the output current for individual axes can be derated. This can only be achieved by making precise alterations to the NextMove ST circuitry. Please contact Baldor Technical Support for details.

4.3.1 Stepper axes 0-2 drive outputs

Step

ST	ST
L297	L298
Controller	Driver

Direction

AXIS 2

5

4

3

2

1

Shield

D2 C2 B2 A2

Motor

outputs

Figure 4 - Stepper output - axis 2 shown

The stepper axis drive outputs operate in half stepping mode.

4.3.1.1Connecting a 4-wire motor

Four-wire bipolar motors can be used with the NextMove ST. Connections are shown in Figure 5. If the motor turns in the wrong direction, reverse the connections from one of the phase outputs AB or CD, but not both.

NextMove ST

axis output

Shield

Ax

Bx

Dx Cx

Motor

Phase 1

Phase 2

Figure 5 - Connecting a 4-wire motor

MN1921 Input / Output 4-5