Stepper Motor Connection Hints

BESSRC uses the standard stepper motor connectors used at the APS. These are available from at least two manufacturers - EDAC & ELCO. Part numbers and pictures for the EDAC connectors are shown in the table below.

Description
EDAC Part Number
Newark Part Number
Photograph
Comments
Plug with actuating screw
516-020-000-301
95F3170
(to be attached to the motors)
Receptacle with locking nut
516-020-000-402
95F3173
 
Cover
?
94B5299 (?)
(This is the part number that we last used, but it does not seem to be a current part number)
Crimp Contacts (pkg 100)
516-290-590
95F3210
The same contacts are used for both the plugs and the receptacles

Table of pin connections for most of the types of stepper motors that we use in BESSRC...

Elco/EDAC Connector
SIGNAL
MOTOR CABLE
SLO-SYN 6-WIRE
SLO-SYN 8-WIRE
ORIEL STEPMIKE
Whedco 8-Wire
VEXTA 2-PHASE motor
ARUN B14.1 motor

A
PH 1 OUT
BLK
RED
RED
WHI (9)
RED
BLK
Phase 1
B
PH2 OUT
BRN
RED/WHI
RED/WHI
GRA (8)
YELLOW
GRN

C
PH3 OUT
RED
GRN
GRN
BLK (10)
BLACK
RED
Phase 2
D
PH4 OUT
ORA
GRN/WHI
GRN/WHI
BLU (6)
ORANGE
BLU
-
E
PH1 RET
WHI/BLK
BLK
BLK
VIO (7)
RED/WHITE
YEL
Phase 1 ret
F
PH2 RET
WHI/BRN
-
WHI
-
YELLOW/WHITE
-
-
H
PH3 RET
RED/WHI
WHI
ORA
-
BLACK/WHITE
WHI
Phase 2 ret
J
PH4 RET
ORA/WHI
-
WHI/BLK
-
WHITE
-
-
K
PH5 RET
YEL
-
-
-

-
-
L
PH5 OUT
YEL/WHI
-
-
-

-
-
M
(UNUSED)
-
-
-
-

-
-
N
HOME
VIO
-
-
-

-
-
P
HOME RET
VIO/WHI
-
-
-

-
-
R
(+V) RET
GRA/WHI
-
-
-

-
-
S
(UNUSED)
SHIELD
-
-
-

-
-
T
CW LIMIT RET
GRN/WHI
cw limit ret
cw limit ret
cw limit ret
cw limit ret
cw limit ret
cw limit ret
U
CCW LIMIT RET
BLU/WHI
ccw limit ret
ccw limit ret
ccw limit ret
ccw limit ret
ccw limit ret
ccw limit ret
V
(+V)
GRA
-
-
-

-
-
W
CW LIMIT
GRN
cw limit
cw limit
cw limit
cw limit
cw limit
cw limit
X
CCW LIMIT
BLU
ccw limit
ccw limit
ccw limit
ccw limit
ccw limit
ccw limit

NOTES

The most common type of motor that we use.

Used on some of the mirror benders

Used on the high energy diffractometer

Used on the user slits motors

0.5 amp max, UHV motor in monochromator

Elco Connector
SIGNAL
MOTOR CABLE
5-Phase Huber Adapter
SINCOS/MICOS Stages

Numbers are pin #s for DB-25 connector
Numbers are pin #s for HD-15 (VGA) connector
A
PH 1 OUT
BLK
1
5
B
PH2 OUT
BRN
9
 
C
PH3 OUT
RED
5
1
D
PH4 OUT
ORA
3
 
E
PH1 RET
WHI/BLK
2
6
F
PH2 RET
WHI/BRN
10
 
H
PH3 RET
RED/WHI
6
2
J
PH4 RET
ORA/WHI
4
 
K
PH5 RET
YEL
8
 
L
PH5 OUT
YEL/WHI
7
 
M
(UNUSED)
-

 
N
HOME
VIO

 
P
HOME RET
VIO/WHI

 
R
(+V) RET
GRA/WHI

 
S
(UNUSED)
SHIELD

 
T
CW LIMIT RET
GRN/WHI
25
15
U
CCW LIMIT RET
BLU/WHI
24
15 (optionally)
V
(+V)
GRA

 
W
CW LIMIT
GRN
20
14
X
CCW LIMIT
BLU
19
13

 
NOTES

An adapter cable to connect the ACS 5-phase motor driver to the DB-25 connector for the 5-phase motors on the Huber Diffractometers

Connect to microstep drivers only!!! If the direction is wrong, either swap the connections to one of the motor phases (e.g. A & E) or swap the limit switches over (e.g. W <> X & T <> U)

The photo shows a typical connector used with a Superior Electric Slo-Syn six-wire motor. Notice that wire links have been inserted for the limit switches (between T&W and U&X) - all the BESSRC motor drivers are set up to expect the limit switches to be normally closed.


Unipolar vs Bipolar Drives.

Be aware that the two kinds of ACS Step Pak drives that we use are not fully interchangeable with each other. The microstepping drivers are bipolar and do not drive pins B,D,F & J at all. If you wire up a six-wire or eight-wire motor according to the chart above then it should work with both the microstepper and the non-microstep drivers. Four lead motors will ONLY work with the microstep driver. If you wired a six-wire motor according to an earlier version of this chart - which had the white wire going to pin J rather than pin H - then the motor will NOT work with the microstep drivers. When using an ACS microstep driver in this way you will only drive half of the available coils in the motor. If you need more torque you should make a small adapter cable to use all of the motor coils. The connections should be as follows:

Motor Side
Driver Side
A
A
B
E
C
C
D
H
E & F linked together

H & J linked together

Other pins straight through...


Huber Slit Adapter for moving 2 slit motors with constant slit opening

This adapter may be used to drive two huber slit motors from a single driver. The two slits move in the same direction, keeping a constant slit opening. The two motors rotate in opposite directions to acheive this.

Driver Side
Motor A
Motor B
A
A
C
B
B
D
C
C
A
D
D
B
E
E
G
G
G
E
T & W linked together (limit)

U & X linked together (limit)