Baldor M4000 Series DC Servo Motors

Overview

Brushed DC motors with tachometer and optional brake, possibly with encoder options as well.

Wiring

6-pin connector

Pin	Wire Color	Function
A	red	motor C.C.W. (+)
B	black	motor C.C.W. (-)
C	red	tachometer C.C.W. (-)
D	black	tachometer C.C.W (+)
E	shield [black]	tachometer shield [brake]
F	[black]	[brake]

https://stevenengineering.com/wp-content/uploads/2019/02/92DC_SERVO_MOTORS.pdf#page=27

9-pin connector

Pin	Wire Color	Function
A	red	tachometer C.C.W. (-)
B	black	tachometer C.C.W. (+)
E	[black]	[brake]
F	[black]	[brake]
G	shield	tachometer shield
H	black	motor C.C.W. (-)
I	red	motor C.C.W. (+)

https://stevenengineering.com/wp-content/uploads/2019/02/92DC_SERVO_MOTORS.pdf#page=27

11-pin connector

Pin	Wire Color	Function
A	yellow & black	S2 & S3
B	red	S1
C	blue	S4
E	red	motor C.C.W. (+)
F	black	motor C.C.W. (-)
G?	shield	tachometer shield
...

16-pin connector

Pin	Function
A	channel A+
B	channel A-
C	channel B-
D	channel B+
E	channel Z+
F	channel Z-
G	[brake] (or motor ground?)
H	+5VDC
I	common
J	[brake] (or NC?)
K	encoder shield
L	tachometer shield
M	tachometer C.C.W. (+)
N	motor C.C.W. (-)
O	tachometer C.C.W. (-)
P	motor C.C.W. (+)

https://stevenengineering.com/wp-content/uploads/2019/02/92DC_SERVO_MOTORS.pdf#page=27

https://www.apexindustrialautomation.com/assets/globalparts/documents/Baldor_Reliance_MTE_4090_BLACE_Specification_Sheet.pdf#page=7 (gives a more detailed pinout)

Replacement Parts

6-pin connector

Motor jack: Amphenol MS3102E-14S-06P

Amphenol MS3102E14S-6P

Mating connector: Amphenol MS3106E-14S-06S

Amphenol MS3106A-14S-6S

9-pin connector

Motor jack: Amphenol MS3102E-20-16P

Amphenol MS3102E20-16P

Mating connector: MS3106E-20-16S

Amphenol MS3106E20-16S

11-pin connector

Motor jack: ???

Mating connector: MS3106E-24-20S

16-pin connector

Motor jack: MS3102E-24-07P

Amphenol MS3102E24-7P

Mating connector: MS3106E-24-07S (need to confirm)

Amphenol MS3106E24-7S

Brushes

• overall length (with spring/copper braid straight): 1.67"
• carbon brush width:0.372"
• carbon brush thickness: 0.246"
• carbon brush length: 0.626"
• copper contact diameter: 0.438"
• copper contact width (flat to flat): 0.332"
• marked "E41" on the side of the carbon brush

A compatible replacement:

10-253721 | Helwig Carbon Products, Inc.

Online Resources

Baldor DC Servo Motors & Drives Catalog