JMC JASD Series Servo Drives

JMC JASD20002-20B stock photo

Overview

Chinese servo drives by JMC (Just Motion Control, aka Shenzhen Just Motion Control Electromachics Co.,Ltd.) that support both incremental ABZ/UVW encoders as well as Tamagawa 17-bit (and maybe 23-bit?) encoders. It is meant for use with their JASM series servo motors.

Model Numbers

V1.3 manual:

• Page 14 (13 in the PDF) shows the servo drive model number scheme
• Page 16 (15 in the PDF) shows the servo motor model number scheme

V1.0 manual:

• Page 9 shows the servo drive model number scheme
• Page 11 shows the servo motor model number scheme

Wiring Diagram

V1.3 manual:

• Page 18 (17 in the PDF) shows an overview of the wiring
• Page 19 (18 in the PDF) shows how to wire single phase vs three phase
• Page 20 (19 in the PDF) shows the locations and descriptions of the various ports/terminals
• Page 21 (20 in the PDF) shows the CN1 "Control" connector pinout
• Page 25 (24 in the PDF) shows the CN2 "Encoder" connector pinout
• Page 27 (26 in the PDF) shows the CN3/CN4 "Communication" ports (CAN and RS-485)
• Page 28 (27 in the PDF) shows the CN5 "RS-232" connector
• Page 28 (27 in the PDF) shows the power terminal strip pinout
• Page 39 (38 in the PDF) shows example wiring for position mode control
• Page 45 (44 in the PDF) shows example wiring for velocity mode control
• Page 47 (46 in the PDF) shows example wiring for torque mode control

V1.0 manual:

• Page 12 shows the CN1 "I/O" connector pinout
• Page 14 shows the CN2 "Feedback" connector pinout
• Page 15 shows the CN3 "Communication 1" connector pinout (RS-232 and RS-485)
• Page 15 shows the CN4 "Communication 2" connector pinout (RS-485 only)
• Page 16 shows the power terminal strip pinout
• Page 24 shows example wiring for position mode control
• Page 26 shows example wiring for velocity mode control
• page 28 shows example wiring for torque mode control

Servo motor V1.0 manual:

• Page 23 (22 in the PDF) shows the motor power and encoder cable pinouts

Dimensions

V1.3 manual:

• page 30 (29 in the PDF) shows the dimensions

V1.0 manual:

• Page 17 shows the dimensions

Software

"software for JMC 220v ac servo motor driver (JASD4002,JASD7502,JASD15002)":

1911130370.zip ("AC servo motor adjust software", Version 1.7.6, Copyright 2018)

From:

Software -Support-Shenzhen Just Motion Control Electromechanics Co., Ltd.

The RS-232 baud rate corresponds to the setting PA00-21, even parity, 1 stop bit. The slave address seems to be set from PA00-23. It seems to only want to communicate over RS-232 and not RS-485, though maybe there is a trick to it.

Micro USB Pin	Direction	DE9 Pin (DTE)	Function
1 (VCC)	drive → PC		+3.3V (for isolator?)
2 (D-)	drive → PC	2 (RXD)	PC's RS-232 RX in
3 (D+)	drive ← PC	3 (TXD)	PC's RS-232 TX out
4 (ID)
5 (VCC)	drive ↔ PC	5 (GND)	GND (digital common)

To be able to write certain groups of parameters, you must "unlock" them either from the servo drive keypad using AF_unL, or by changing parameter P10-22, which cannot be navigated to by the keypad. You must instead do it over RS-485 or RS-232 via the PC software. The software has an unlock dialog that requires the passwords: the "Primary authority" password is jmc and the "Super authority" password is jmc2018, which allow you to access the P10-xx parameters.

Parameters

V1.3 manual:

• Page 67 (66 in the PDF) has the parameter table
• Page 82 (81 in the PDF) has the parameter descriptions

V1.0 manual:

• Page 33 has the parameter table
• Page 37 has the parameter descriptions

Alarm Codes

V1.3 manual:

• Page 114 (113 in the PDF) shows the list of alarm codes

V1.0 manual:

• Page 52 shows the list of alarm codes

Replacement Parts

CN1 Control

• 3M 10150-3000PE (solder cup connector)
• 3M 10350-52F0-008 (backshell w/ hooks)
• 3M 10350-52A0-008 (backshell w/ screws)

CN2 Feedback

• 3M 10120-3000PE (solder cup connector)
• 3M 10320-52F0-008 (backshell w/ hooks)
• 3M 10320-52A0-008 (backshell w/ screws)

PDFs

JMC EtherCAT Servo Drive User Manual (v1.3, 2019-12-11)

Online Resources

JMC JASD Series AC Servo Drives User's Manual (V1.3)

JMC JASD Series AC Servo Driver User Manual (V1.0)

JMC JASD Series AC Servo Selection Manual (V1.0)

User Manual -Support-Shenzhen Just Motion Control Electromechanics Co., Ltd.