JMC JASD Series Servo Drives
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:
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:
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.