GSK SJT Series User manual

In this manual, we have tried as much as possible to describe
all the various matters about AC servo motor. However, we can not
describe all the matters which must not be done or which can not be
done because there are so many possibilities. Therefore, matters
which are not especially described in this manual should be regarded
as “impossible” or “forbidden”.
The copyright of the user manual is owned by GSK CNC
Equipment Co., Ltd (Hereinafter referred to as GSK).It is against the
law for any organization or individual to reproduce this manual in any
form without the permission of GSK and GSK reserves the right to
investigate its law duty.

User Manual
II
PREFACE
Dear user:
It’s our honor that you select GSK SJT serial AC servo motor (Hereinafter
referred to as motor).
For safety of the motor and the product and for the normal and effective
running, please read the manual carefully before installing and using the
product.

User Manual
III
SAFETY PRECAUTIONS
1. The motor is installed with the photoelectric encoder, and it’s not allowed to hit the
motor. And the user can’t disassemble the photoelectric encoder by himself; otherwise,
the relative position (zero position) between the encoder and the motor winding is
changed, which causes the motor out of running!
2. In the normal climate, measure the insulation resistance which the motor winding is
against with the cabinet, by 500V megameter, and the value should NOT be less than 20
MΩ.
3. The motor and the drive unit should be connected correctly based on the manual to
guarantee the protective grounding stable and reliable.
4. The motor can run with load only after the motor is free of noise and vibration during
running from zero speed to the maximum speed in the dry run state.
5. During the motor running, it’s not allowed to touch the motor shaft and cabinet.
6. Only the qualified person can adjust and maintain the motor.
7. It is forbidden to move the motor by dragging the wire (cable) or the motor shaft.
8. GSK does NOT take any responsibility for any change on the product by the user, and
the warranty bill becomes invalid.
All specifications and designs are subject to change without notice.
The incorrect connection and operation may cause the accident, so
before using and operating the motor, please read the manual carefully!

User Manual
IV
RESPONSIBILITY
Responsibility of the manufacturer
——The manufacturer should be in charge of the design and the structure of the motor
and its accessories.
——The manufacturer should be responsible for the safety of the motor and its
accessories.
——The manufacturer should be in charge of the provided information and suggestion
for the user.
Responsibility of the end user
——The user should be very familiar with the safety operation through learning the
motor safety operation or participating in the training session.
——The user should be responsible for the safety after adding, changing or modifying
the original motor and its accessories by himself.
——The user should be in charge of the danger resulted from the operation, adjusting,
maintenance, installation and storage which are not complied with the manual
regulation.
The manual is kept by the end user.
Thank you for your friendly support during using GSK
product.

GSK SJT series AC servo motor
V
CONTENT
RESPONSIBILITY ····················································································· IV
ⅠPRODUCT CHARACTERISTICS ························································· 1
ⅡRUNNING CONDITIONS ······································································ 1
ⅢMODELS of the MACHINE··································································· 2
ⅣMAIN TECHNICAL PARAMETERS of the MOTOR····························· 3
ⅤMOTOR OVERALL and INSTALLATION DIMENSION·······················11
ⅥCONNECTION between the MOTOR and DRIVE UNIT···················· 14
ⅦSTORAGE of the MOTOR·································································· 15
ⅧTRANSPORTATION of the MOTOR ·················································· 15
ⅨPROTECTION of the MOTOR ···························································· 16
ⅩWARRANTY························································································ 17
ⅪORDER································································································ 17

GSK SJT series AC servo motor
VI

GSK SJT series AC servo motor
1
ⅠPRODUCT CHARACTERISTICS
SJT series sine shaped AC permanent magnet synchronous servo motor, which is researched,
developed and manufactured by GSK, adopts the rare earth permanent magnet material of high
performance, with the characteristics of high torque inertia ratio, low speed performance and strong
overload capacity, etc, which can widely satisfy the requirements of the machine CNC system.
ⅡRUNNING CONDITIONS
2.1 The height above sea level should NOT exceed 1000m. If it’s more than 1000m, some
performance may get affected due to the air cooling.
2.2 The environment temperature should be in the range of -10℃~ +40℃.
2.3 The relative air humidity is ≤90% (without the condensation).
2.4 AC voltage value of steady state is:（0.85 ~1.1）multiplies the rated voltage value.

GSK SJT series AC servo motor
2
ⅢMODELS of the MACHINE
Example: 80SJT － MZ032EH（A4Y1X）
80 SJT - M Z 032 E H（A□Y□X）
Dimension for
installing the flange:
60
80
110
130
150
175
AC servo motor series
SJT Common
SJTG High precision & speed
SJTR
Dedicated for the robot
Safe brake:
None None
Z Available
Remark: When the power
supply of the safe brake is
DC. （0.9~ 1.1 ）×24V, the
interface is 3-cord socket,
the pins 1 and 2 are power
supply terminals (without
pole), pin 3 is the earth one.
When pins 1 and 2 are
connected with the power
supply, the brake doesn’t
operate,; when the power
supply is OFF, it operates.
The safe brake operation
time≤0.1s.
Connection mode
None Industrial (aviation) socket
type
X Cable direct t
yp
e
Shaft end or installation config.
None: Standard shaft end
Y□Special cylinder shaft end
Z□Special cone shaft end
S□Stepped motor installation
configuration
Remark:The digit code is in “□” ,
about the number representing
the special shaft end, refer to the
installation overall figure of the
motor.
Encoder type
A or none Incremental 2500p/r
A1
A2 Incremental 5000p/r
A3 Incremental split-type 2500p/
r
A4 Absolute 17bit
A4ⅠAbsolute 17bit, Biss treaty
A4ⅡAbsolute 17bit, Smart-Abs
treaty
Rated speed
A 1000 r/min
B 1500 r/min
C 2000 r/min
D 2500 r/min
E 3000 r/min
F 3500 r/min
G 4000 r/min
Zero-speed torque
Remark: It is represented
by three digits, and its value
is in three digits ×10-1 and
its unit is N·m.
Example: 032×10-1=3.2N·m
Input voltage of the drive unit
None 220V
H 380V
Feedback unit
M Photoelectric encoder

GSK SJT series AC servo motor
3
ⅣMAIN TECHNICAL PARAMETERS of the MOTOR
4.1 Refer to list 1 about the main technical parameters of 80SJT serial motor.
List 1
Torque-speed characteristics（A：Continuous working zone；B：Intermittent working zone）
M (r/min)
3000
2000
1000
T (N·m)
2.5 5.0 7.50
80SJT-M024C
AB
4000
3000
2000
1000
2.5 5.0 7.50
80SJT-M024E
AB
4000
3000
2000
1000
3.0 6.0 9.00
80SJT-M032E
AB
3000
2000
1000
0
80SJT-M032C
AB
3.0 6.0 9.0
M (r/min)
T (N·m)
M (r/min)
T (N·m)
M (r/min)
T (N·m)
TYPE
ITEM 80SJT-M024C 80SJT-M024E 80SJT-M032C 80SJT-M032E
Rated power （ kW ）
0.5 0.75 0.66 1.0
Pole pairs 4
Drive unit input voltage （ V ） AC220, three phase（or single phase）
AC220, three phase
Rated current（A）3 4.8 5 6.2
Zero-speed torque （ N · m ）
2.4 2.4 3.2 3.2
Rated torque（N·m）2.4 2.4 3.2 3.2
Max. torque（N·m）7.2 7.2 9.6 9.6
Rated speed（r/min）2000 3000 2000 3000
Max. speed（r/min）2500 4000 2500 4000
Rotation inertia （ kg · m P
2
P
）
0.83×10P
-4
P0.83×10P
-4
P1.23×10P
-4
P1.23×10P
-4
P
Weight（kg）3.1 3.2 3.7 3.8
Insulation level F（GB 755
— 2008/IEC 60034-1：2004）
Vibration level A（GB 10068
— 2008/IEC 60034-14：2007）
Protection level IP65（GB 4208
— 2008/IEC 60529：2001，GB/T 4942.1 — 2006）
Installation type IMB5（flange installation）（GB/T 997
— 2008 / IEC 60034-7:2001）
Working system S1（Continuous working system）（GB 755
— 2008）
Encoder pulses （ p/r ）
Incremental 2500 (standard configuration)
Safe brake DC24V, 3.2N·m, 11.5W, the weight of the
corresponding motor is increased by 0.9 kg.

GSK SJT series AC servo motor
4
4.2 Refer to list 2 about the main technical parameters of 110SJT series motor.
List 2
Torque-speed characteristics（A: Continuous working zone；B：Intermittent working zone）
3000
2000
1000
4.0 8.0 12.00
110SJT-M040D
AB
110SJT-M060E
0
110SJT-M040E
3600
2700
1800
900
AB
4.0 8.0 12.0
0
3600
2700
1800
900
AB
4.0 8.0 12.0
M (r/min)
T (N·m)
M (r/min)
T (N·m)
M (r/min)
T (N·m)
110SJT-M060D
3000
2000
1000
4.0 8.0 12.00
AB
M (r/min)
T (N·m)
TYPE
ITEM 110SJT-M040D 110SJT-M040E 110SJT-M060D 110SJT-M060E
Rated power（kW）1.0 1.2 1.5 1.8
Pole pairs 4
Drive unit input
voltage（V）
AC220 three-phase
（ or single phase ）
AC220，three phase
Rated current（A）4.5 5 7 8
Zero-speed torque （ N · m ）
4 4 6 6
Rated torque（N·m）4 4 6 6
Max. torque（N·m）12 10 12 12
Rated speed（r/min）2500 3000 2500 3000
Max. speed（r/min）3000 3300 3000 3300
Rotation inertia （ kg · m P
2
P
）
0.68×10P
-3
P0.68×10P
-3
P0.95×10P
-3
P0.95×10P
-3
P
Weight（kg）6.1 6.1 7.9 7.9
Insulation level B（GB 755
— 2008/IEC 60034-1：2004）
Vibration level A（GB 10068
— 2008/IEC 60034-14：2007）
Protection level IP65（GB 4208
— 2008/IEC 60529：2001，GB/T 4942.1 — 2006）
Installation type IMB5（flange installation）（GB/T 997
— 2008 / IEC 60034-7:2001）
Working system S1（Continuous working system）（GB 755
— 2008）
Encoder pulses (p/r ） Incremental 2500（Standard configuration）
Safe brake DC24V, 4N·m, 20W，the weight of the
corresponding motor is increased by 1.6kg.