Mclennan SimStep - 4 Motor Connections; Colour Code for 8 Lead Motors

SimStep Manual - 3400 Iss. D 7
th
June 2004 page 12
4 Motor Connections
4.1 Colour Code for 8 lead motors:
The motor will have eight leads that can be identified as shown in figure 4.1.
Fig. 4.1 Eight lead 23 & 34 frame size motors
Lead identificationMotor
1 1’ 2’ 2 3 3’ 4’ 4
HS
Series
Red White/
Red
White/
Yellow
Yellow Black White/
Black
White/
Orange
Orange
or
Red Black White White/
Red
White/
Green
White/
Black
Orange Green
23HSX
Red White/
Red
White/
Yellow
Yellow Orange White/
Orange
White/
Brown
Brown
34HSX
Red White/
Red
White/
Yellow
Yellow Black White/
Black
White/
Orange
Orange
The motor can be connected into the MSA889 junction box as shown in fig. 4.4. Internal
links select parallel or series operation. This function is shown in figures 4.2 and 4.3.
The maximum drive current for coils wired in parallel is the unipolar motor phase current
rating x √2. The maximum drive current for coils wired in series is the unipolar motor
phase current rating / √2.
To reverse motor direction, swap the connections to one phase. E.g., swap B with B’.
1 1’ 3’ 3
2 2’ 4’ 4
Phase A’
Phase A
Phase B’
Phase B
11’2
2’
33’ 4
4’
Phase A’
Phase A
Phase B’
Phase B
11’2
2’
33’ 4
4’
Fig. 4.2 Coils in Parallel Fig. 4.3 Coils in Series