gsk GSK DA98D User Manual

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DA98D Digital AC Servo Drive Unit

User Manual

(V5.00)

Page 2

In this User manual, we will exert ourselves to describe each item related

to operation of this drive unit. But due to reasons like limit in space and

specific product uses, detailed description of unnecessary or impossible

operation of this drive unit will be not included. Therefore, items that are

not specially indicated in this manual will all be regarded as “impossible”

or “disallowed” operations.

publication or copying of this manual by any unit or individual will be

deemed as illegal behaviors. GSK Equipment Co., Ltd shall reserve the

rights to ascertain legal liabilities of such behaviors.

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Company Profile

Currently, GSK Equipment Co., Ltd (hereafter GSK for short) is a China's

company with the domestically largest sale volumes of digital control systems.

As the digital control industry base in Southern China and one of the 20

manufacturers of key equipment in Guangzhou, GSK is an undertaker of key

projects listed in State 863 Supporting Technology for Middle-Grade Digital

Control Industrialization. For more than a decade, the company has been

dedicated to professional research & development, designing and

manufacturing of such products as digital control systems for machine tools,

digital control devices, drive units and servo motors. By launching campaign on

popularization of digital control machine tools and developing trade in digital

control machine tool, the company has developed into a large hi-tech company

that integrates science, education, industry and trade into itself. Currently the

company has more than 1,400 employees, among whom there are 4 doctors,

more than 50 masters and over 500 engineering technicians (more than 50

technicians with senior professional titles). With a superior cost performance,

GSK series of products have a very good sale in China and far in Southeastern

Asia. Between 2000 and 2006, its market share has ranked No.1 in China for 7

consecutive years and its yield and sale volumes have led the peers for 7

consecutive years, which have consolidated its position as the biggest

domestic production base of digital control system for machine tools.

Our main products include digital control equipment and devices like GSK

series of machine tools, milling machine and digital control system for

processing centers as well as Da98, DA98A, DA98B and DA98D series of full

digital AC servo drive units, DY3 series of hybrid stepper motor driver, DF3

series of reaction stepper motor driver, GSK·SJT series of AC servo motors

and CT-L digital control slipway. All the products follow state standards

(international standards), industry standards and supplementary company

standards (or internal control standards) in an all-round way. With powerful

strength in technology development and improved production and quality

assurance system, GSK has satisfied requirements of vast number of its

customers with stable and reliable product quality. Its improved and sound

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service mechanisms as well as the more than ten service offices set up in domestic and foreign provinces and cities can guarantee swift and convenient technical support and services within 24 to 48 hours. “Excellent products and outstanding services” have built a brilliant GSK. Abiding by the operation concept of “creating century-old company and molding gold brand”, GSK people will make unrelenting efforts to build a digital control industry base in Southern China and push forward national digital control industry.

Field Technical Support Services

If you have problems that cannot be resolved through phone calls, you can

receive our technical support on the spot. GSK will authorize technical support

engineer to the field to resolve your technical problems.

III

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Foreword

Distinguished Customers,

It is a great honor for us to have you buy DA98D full digital AC servo drive units

of GSK Equipment Co., Ltd.

This manual will introduce requirements and notes about operation of DA98D

full digital AC servo drive unit.

! Improper operation will cause accidents, and the drive unit must be

operated by personnel with related qualifications

Please see to it that you have carefully read the manual prior to operation!

If there are changes to specifications and designs, we will not provide further notices.

Sincere thanks to your friendly support for using products of GSK Equipment Co., Ltd.!

Chinese version of all technical documents in Chinese and English languages is regarded as final.

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Foreword

● Due to improvement in products, contents of this manual will have some changes, for

which we will not provide further notices.

● We will not be held accountable for any change made by the customer on the product

and the warranty form will hereby go invalid.

Please give special attention to the following warning sings when reading the manual!

Warning

Attention

Wrong operation may lead to disastrous consequences---death

or serious injury

Wrong operation may hurt the operator and the equipment may

also be damaged!

Improper operation may damage the product and equipment!

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Safety Warning

● The product is not designed and manufactured to be used in machines or systems

threatening personal safety.

● When selecting the product, the customers shall consider safety protection measures when

designing and manufacturing their machines and systems, so as to avoid improper

operation or irregular accidents of the product.

Acceptance

● Damaged or broken-down products shall not be put into use.

Transportation

Warning

Attention

● Products must be stored and transported under conditions for storage and transportation.

● Over-height piling shall not be allowed to prevent products from falling.

● When being transferred, the products concerned shall be properly packed.

● The servo motor shall not be moved by drawing its wire, motor shaft or encoder.

● Outside force and impact shall not be imposed on servo drive units and servo motors.

Installment

Servo drive units and servo motors:

● Shall not be installed above or around combustible articles to prevent fire disaster.

● Shall avoid vibration. Impact shall be strictly forbidden.

● Shall not be installed when they are damaged or the parts are incomplete

Servo Drive unit:

● Must be installed in the control panel with sufficient degree of protection.

● Must keep sufficient intervals away from other equipment.

● Must have good conditions for heat emitting.

● Must prevent invasion of dust, corrosive air, conductive matters, liquid, combustible and

explosive substances.

Servo motors:

● Must be firmly installed to prevent loosening under vibration

● Must prevent motor and encoder from being damaged by the invaded liquids

● Shock on motor and motor shaft shall be strictly forbidden to prevent the encoder from

being damaged.

● Load surpassing its limit shall not be imposed on the motor shaft.

Attention

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Safety Warning

Wiring

● Personnel involved in wiring or examination must possess sufficient competence in this

task.

● Wiring and examination must be conducted 5 minutes after the power is switched off.

● Servo drive units and servo motors must have good ground contact.

● Wrong voltage or electrode may cause explosion or operation accidents.

● Only after the servo drive unit and servo motor are properly installed can the wiring be

conducted.

● Ensure insulation of the wire and avoid pressing the wire to prevent electric shock.

● Wires must be connected in a correct and firm manner, otherwise, the servo motor may run

by error or the equipment may be damaged due to bad contact.

● Terminals of U, V and W in servo motor shall not be connected reversely, nor be connected

to AC power.

● Servo motor and servo drive unit must be directly connected and they shall not be

connected with capacitor, inductor or wave filter.

● Prevent conductive fastening elements and wire heads from entering in the servo drive unit.

● The wire and substances not resistant to heat shall not close up to the servo drive unit’s

radiator and servo motor.

● Continuous current diode connected in parallel to the DC relay for output signals shall not

be connected reversely.

Attention

Commissioning and Runing

Attention

● Confirm that the servo drive unit and servo motor have been properly and firmly installed

and that the power voltage and wiring are correct before switching on power.

● When commissioning, first run the servo motor without load; and after confirming that the

parameters are correctly set, run the servo motor with load. In this process, improper operation shall be avoided to prevent the machine and equipment from being damaged.

Operation

● An emergency stop circuit shall be coupled in to ensure that the equipment can

immediately stop by timely switching off power in case of accidents.

● Confirm that the operation signal has been cut off before resetting an alarming signal;

otherwise, the signal will be restarted suddenly.

● Servo drive unit must be operated together with its matched set of servo motor.

● Do not frequently switch off or on power of the servo drive unit to prevent the system from

being damaged.

● The servo drive unit and servo motor may be very hot after long hours of operation, so do

Attention

Ⅶ

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Safety Warning

not touch the servo drive unit’s radiator or the servo motor with your hand within a short time after the power is off.

● Do not refit the servo drive unit.

Failure Handling

● Even after the power of servo drive unit has been cut off, the voltage will remain for some

time. So do not dismantle the wire or touch the plate of terminals.

● Personnel involved in dismantlement and repair must possess corresponding professional

knowledge and working capacity.

● In case of alarming, the trouble must be shot. Before restarting the machine, the alarming

signal shall be reset.

● Keep away from the machine when re-switching on the power after instantaneous power

failure, for the machine may be restarted suddenly (when designing the machine, make sure that there will be no danger when restarting the machine).

System Selecting and Matching

Attention

● Rated torque of the servo motor shall be greater than the valid continuous load torque.

● The ratio of load inertia to servo motor inertia shall be less than the recommended value.

● When selecting servo drive unit and servo motor, they shall be matched with each other.

Ⅷ

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DA98D User manual

Table of Contents

Chapter One Overview........................................................................................................1

1.1 Product Introduction.............................................................................................................. 1

1.2 Arrival Examination ................................................................................................................ 2

1.3 Product Appearance .............................................................................................................. 3

Chapter Two Installment.....................................................................................................6

2.1 Environmental Conditions.................................................................................................... 6

2.2 Installment of Servo Drive unit............................................................................................ 6

2.3 Installment of Servo Motor................................................................................................... 9

Chapter Three Wiring.........................................................................................................10

3.1 Standard Wiring..................................................................................................................... 10

3.2 Functions of Terminals........................................................................................................ 14

3.3 I/O Interface Principle .......................................................................................................... 19

Chapter Four Parameters.................................................................................................25

4.1 Checklist of Parameters...................................................................................................... 25

4.2 Functions of Parameters..................................................................................................... 27

4.3 List for comparison of Modle Codes & Parameters and Motor ................................ 34

Chapter Five Alarming and Handling............................................................................35

5.1 List of Alarms......................................................................................................................... 35

5.2 Methods for Handling Alarms............................................................................................ 36

Chapter Six Display and Operation ...............................................................................40

6.1 Keyboard Operation............................................................................................................. 40

6.2 Ways of Monitoring .............................................................................................................. 41

6.3 Parameter Setting ................................................................................................................. 43

6.4 Parameter Management ...................................................................................................... 44

6.5 Speed Trial Operation.......................................................................................................... 45

6.6 JOG Operation....................................................................................................................... 46

6.7 Others ......................................................................................................................................46

Chapter Seven Operation by Switching on Power....................................................47

7.1 Power Supply Connecting.................................................................................................. 47

7.2 Trial Operation....................................................................................................................... 49

7.3 Adjustment ............................................................................................................................. 51

Chapter Eight Product Specifications ..........................................................................53

8.1 Driver Specifications............................................................................................................ 53

8.2 Servo Motor Specifications................................................................................................ 54

8.3 Isolating Transformer .......................................................................................................... 59

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DA98D User manual

Chapter Nine Order Instructions....................................................................................65

9.1 Capacity Selecting................................................................................................................ 65

9.2 Electronic Gear Ratio........................................................................................................... 65

9.3 Stop Features......................................................................................................................... 66

9.4 Calculation Method for Selecting Models of Servo System and Position

Controller....................................................................................................................................... 66

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DA98D User Manual

Chapter One Overview

1.1 Product Introduction

The AC servo technology has undergone a rapid development since the beginning of 1990s, during which period this technology has been increasingly mature and its performance has been constantly improved. Now this technology has been widely applied to such automatic fields as CNC machine tools, printing and packing machines, textile machinery and automatic production lines.

DA98D AC servo drive unit (all called full digital AC servo drive device) is a new generation of full digital AC servo drive unit produced by our company. This product includes two control modes of speed and position. It can be matched with various open-loop and closed-loop control systems and has been widely applied to CNC machine tools and automatization industry. Internationally advanced special-purpose chip for motor control (TMS320LF2407A DSP), complex programmable logic display (CPLD) and MITSUBISHI intelligent power module (IPM) are adopted inside the servo, so it has such advantages as high degree of integration, compact, perfect protection and good reliability. The optimal PID is employed to achieve PWM control. Performance of this product has reached internationally advanced level among its peers at home and aboard.

Compared with stepper drive, DA98D AC servo unit has the following strong points: z Avoid out-of-Synchronization Phenomena

Servo motor has encoder on itself and the position signal will be fed back to the servo drive

unit, forming a semi-closed loop system together with the open-loop position controller.

z Wide speed ratio and constant torque

Speed ration is 1:5000, with stable torque characteristics from low speed to high speed.

z High speed and precision

The maximal rotation rate of servo motor can reach 3000r/min, with a rotary positioning

precision 1/10000r.

Notes: maximal rotatation rate is not the same with different models of servo motor.

z Easy and flexible control

Through parameter changing, working methods and characteristics of the servo drive unit

can be properly set to comply with different requirements.

open-loop control

controller

positioning command

stepper motor

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DA98D User Manual

1.2 Arrival Examination

1) After the product arrives, please see to examine the following aspects:

（1） Whether the packing case is in good conditions, and whether the product is damaged

during transportation?

（2） Check nameplates of the servo drive unit and servo motor to confirm whether the

products received comply with the order.

（3） Check packing list to confirm whether the accessories are complete.

Attention

z Servo system shall not be installed when it is damaged or does not have complete parts. z Servo drive unit must be used together with the servo motor whose performance matches

that of the former.

z If there is any doubt about the products received, please contact supplier or us.

2) Model meaning: a) Models of servo drive unit

DA98D-06-110SJT-M020E

Model matching servo motor (indicate GSK SJT series) 1※

Output power: two-digit (04, 06……23) correspond to 0.4~2.3KW 2※

Series Code

※1: It can be matched with other domestic or imported servo motor. If there is no parameter in

the drive unit, it can only be matched with SJT and ST series of servo motors.

※2: Small power (1.5KW or less) means standard configuration; medium power (more than

1.5KW but less than 1.6KW) means thicker radiator.

Notes: when the product is delivered from the factory, the product model has been

completed in the above column. Please check them with the product

nameplate.

b) Models of servo motor

DA98D AC servo drive unit can be matched with many domestic or exported servo motors, which is at your option. Chapter Eight of this manual will provide information about SJT

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DA98D User Manual

series of servo motor from GSK and ST series of servo motor from New Motor Company of Huazhong University. Information about other models will be provided with the servo motor delivered.

2） Accessories

a) Standard Accessories of DA98D servo drive unit

① User Manual (this manual) 1

M4×8 countersunk head screws 4

② ③ CN1 Plug (DB44 female) 1 (note 1) ④ CN2 Plug (DB25 male) 1 (note 2)

Note 1: For matching our position controller, it will be provided together with the

signal cable, whose standard length is 3 meters.

Note 2: when we provide servo motor, you can ask us to provide its matching

feedback cable, whose standard length is 3 meters.

b) Standard accessories of servo motor will be provided according to user

instructions.

1.3 Product Appearance

1) Appearance of servo drive unit

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DA98D User Manual

2) Servo motor appearance

Fig. 1-1 Appearance of Servo Drive unit

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DA98D User Manual

Fig. 1-2 Servo Motor Appearance

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DA98D User Manual

Chapter Two Installment

z The products must be stored and installed according to the requirements for environmental

conditions.

z The products can be piled up with a limited number; over-piling shall not be allowed to

prevent the products from being damaged or falling.

z The products must be stored and transported with original package. z Product shall not be installed when it is damaged or does not have complete parts. z Fireproof material is needed for the product installment; the product shall not be installed

above or around combustible article to prevent fire.

z Servo drive unit must be installed within electric cabinet to prevent invasion of dust, corrosive

air, conductive matters, liquid, combustible and explosive substances.

z Servo drive unit and servo motor shall avoid vibration. Impact shall be strictly forbidden. z It is forbidden to draw wire, motor shaft and encoder of the servo motor.

Attention

2.1 Environmental Conditions

Items DA98DServo Drive unit GSK SJT Series of AC Servo Motor

Operation

Temperature/

Humidity Storage

Temperature/

Humidity

Atmospheric

Environment

Height

0℃～55℃ (no frozen frost) Less than 90%RH (no dew condensation)

-20℃～80℃ 90%RH(no dew)

Within the control panel, there shall be not corrosive air, combustible air, oil fog or dust. Less than 1000m above sea level

-10℃～40 (℃ no frozen frost)) 90%RH (no dew condensation)

-40℃～55℃ 85%RH ( no dew)

Within the room (no insolation), there shall be not corrosive air, combustible air, oil fog and dust.

Less than 1000m above sea level

Vibration Less than 0.5G(4.9m/s2)10 Hz -60Hz (non-continuous operation)

Degree of

Protection

IP00 IP54

2.2 Installment of Servo Drive unit

z Servo drive unit must be installed in the electric cabinet with good protection. z Servo drive unit must be installed according to direction and interval as stipulated. Good

conditions for heat radiating should be guaranteed.

z It shall not be installed above or around combustible articles to prevent fire.

1） Installment Environment

（1） Protection

Attention

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DA98D User Manual

The servo driver does not have any protection within its own structure, so it must be

installed within the electric cabinet with good protection and prevented from contact of

corrosive and combustible air. Conductive matters, metal dust, oil fog or liquid shall be

prevented from entering inside.

（2） Temperature and Humidity

The environmental temperature shall be kept between 0 and 50 , while temperature for ℃℃ long-term safety operation shall be kept below 45 . Good conditions for heat radiating ℃

shall be guaranteed.

（3） Vibration and Impact

When installing the drive unit, vibration shall be avoided. Vibration reduction measures shall

be taken to control the vibration below 0.5G (4.9m/S2).

2） Installment Methods

(1) Ways of Installment

The user can adopt the ways of installment by back panel or panel. The installment shall form

an upward right angle with the installment plane. Fig. 2.1 is a schematic diagram for

installment by back panel and Fig. 2.2 is a schematic diagram for installment by panel.

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DA98D User Manual

(2) Installment Interval

Fig. 2.3 shows the installment interval for single drive unit and Fig. 2.4 shows the installment

interval for multiple drive units. In actual installment, the interval shall be as great as possible

to ensure good conditions for heat radiating.

Fig. 2.3 Installment for Single Drive unit

Fig. 2.4 Installment Interval for Multiple Drive units

(3) Heat Radiating

To ensure that surrounding temperature of the drive unit will not be constantly increased, there shall be convective-current wind blowing towards radiator of the drive unit within the electric cabinet.

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DA98D User Manual

2.3 Installment of Servo Motor

z Shock on the motor shaft or encoder shall be forbidden to prevent the motor from vibration or

impact.

z The motor shall not be moved by drawing motor shaft, leading-out wire or encoder. z Load on the motor shaft shall not surpass its limit; otherwise, the motor may be damaged. z The motor must be firmly installed with anti-loosening measures.

1) Installment Environment

（1） Protection

Currently, GSK SJT series and Huazhong Series of servo motor are not water

resistant, so liquid must not be spattered on the motor during installment. Oil or

water must be prevented from entering inside the motor through leading-out wire or

the motor shaft.

Attention

Notes: if the user needs water-resistant servo motor, please make a clear

indication in the order.

（2） Temperature and Humidity

The environmental temperature shall be kept between -10 and 40 . After long ℃℃

hours of operation, the motor will have an increasingly hot temperature, so

compulsory heat radiating shall be considered when the surrounding space is

relatively small or there are heating equipment.

The humidity shall not be more than 90%RH, without dew condensation.

（3） Vibration

Servo motor shall not be installed at places with vibration. The vibration inflicted on

the motor shall not be more than 0.5G (4.9m/s

2) Installment Methods

Ways of Installment

(1)

Currently, SJT and ST series of motors adopt the way of installment by the flange with

arbitrary installment direction.

(2) Notes:

z When dismantling or installing the belts and wheels, shock on the motor or motor

shaft shall be forbidden to prevent the encoder from being damaged. Screw

pressing tools shall be employed in the dismantlement or installment.

z Currently, most of the SJT and ST series of motors cannot bear shaft-direction or

radial-direction loads. Coupling is recommended for connecting the loads.

z When fastening the motor, the anti-loosening washer shall be used to prevent the

motor from loosening.

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DA98D User Manual

Chapter Three Wiring

Warning

●Personnel involved in wiring or examination must possess sufficient abilities in this task.

●Wiring and examination must be conducted 5 minutes after the power is off for preventing electri shock.

●The wires must be connected according to terminal voltage and electrode to prevent th

equipment from being damaged or personnel from being hurt.

● The drive unit and servo motor must have good ground contact.

3.1 Standard Wiring

External connection of the drive unit is related to the control modes.

1） Position Control Mode

Fig. 3.1 shows standard wiring for the position control mode.

2） Speed Control Mode:

Fig. 3.2 shows the standard wiring for the speed control mode.

3） Wire Distributing

（1） Power Terminal TB

z Wire cross-sectional area: Terminals of R, S, T, PE, U, V and W have an area

1.5mm (AWG16-18) and more.

z Grounding: the grounding wire shall be as thick as possible. The servo driver and

motor has ground contact at the point of PE terminal with a grounding resistance less than 100Ω.

z Terminal connection adopts SVM2-4 pre-insulation cold pressing terminal. The

connection must be fastened.

z It is recommended to supply power with three-phase isolating transformer, which

will reduce the possibility of electric shock.

z It is recommended that the power supply gives power through noise filter for

enhancing anti-jamming ability.

z Please install non-fuse breaker (NFB) in order to cut off external power supply

when the driver breaks down.

（2） CN2Contrl Signal CN1 and Feedback Signal CN2

z Wire material selecting: employ shielding cable (best with inter-twisted shielding

cable), the cross-section area of the core shall be 0.12mm The shielding layer shall be connected with FG terminal.

z Wire and cable length: wire and cable shall be as short as possible; control signal

CN1 shall not be longer than 3 meters while the feedback signal CN2 cable shall not be longer than 20 meters.

z Wire laying: Wire shall be laid far away from the power circuit to prevent jamming.

(AWG14-16) and more while terminals of r and t have an area 1.0 mm2

Attention

(AWG24-26) and more.

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DA98D User Manual

z Please install surge absorbing elements in sensible elements (loop) in related

circuits: DC loop is reversely connected in parallel with continuous current diode while AC loop is connected in parallel with capacitance-resistance absorbing return circuit.

Attention

U, V and W shall be connected with motor winding in the way of one-to-one correspondence. Revers connecting shall be forbidden. The wires and leads shall be fastened firmly and avoid approaching radiator of the drive unit and th motor for the fear that the insulation performance will be reduced due to heat. There will remain large quantities of electrolyzed capacitance in the servo drive unit, so there will high remaining voltage even after the power is cut off. Do not touch drive unit or motor within minutes after the power is off!

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DA98D User Manual

AM26LS32 Receiver

Fig. 3.1 Standard Wiring for Position Control Mode

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DA98D User Manual

AM26LS32 Receiver

Fig. 3.2 Standard Wiring for Speed Control Mode

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DA98D User Manual

3.2 Functions of Terminals

1） Configuration of Terminal

Fig. 3.3 is a configuration chart for interface terminals of the servo drive unit. TB is the plate of terminals; CN1 is for connector of DB44 with male socket and female plug; CN2 is also for connector of DB28 with female socket and male plug.

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DA98D User Manual

P D

CN2

23 10

19 6 18

14 1

9 21 8 20 7

4 16 3

MHP NC AA+ B-

B+ Z-

Z+ U-

U+ VV+ WW+ +5V +5V +5V +5V 0V 0V 0V FG 0V FG 0V

DB25

Fig. 3.3 Configuration Chart for Interface Terminals of Servo Drive unit

2） Power Terminal TB

Table 3.1 Power Terminal TB

Terminal

No.

TB-1 R

TB-2 S

TB-3 T

TB-4 PE

TB-5 U TB-6 V TB-7 W TB-8 P Back up TB-9 D Back up

TB-10 r TB-11 T

Terminal

Mark

Terminal Name Functions

Major Loop Power Single-phase or Three-phase

Input terminal of major return circuit power ～220V 50Hz Notes: Do not connect with motor output terminals of U, V and W.

Grounding terminals Product Earthling

Grounding resistance is less than 100Ω;

Servo motor output and power input have ground

contact at the common point.

Servo Motor Output

Control Power Single-Phase

Servo motor output terminal; shall be connected

with motor terminals of U, V and W in the way of

one-to-one correspondence

Input terminal for control circuit power

～220V 50Hz

3） Control Terminal CN1

Simplified form of Control Modes:

P stands for position control mode

S stands for speed control mode

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DA98D User Manual

Table 3.2 Control Signal Input/Output Terminal CN1

Terminal

No.

Terminal

Name

Mark I/O Mode Functions

Power CN1-38 CN1-39

Anode of

Input

COM+ Type l

Terminal

CN1-23 Servo On SON Type1

CN1-8

CN1-24

CN1-9

Alarm

Stopping

CCW Driv

Stopping

CW Driv

Stopping

Error Mete

Clearance

ALRS Type1

FSTP Type1

RSTP Type1

CLE Type1 P

CN1-40

Speed

Choice 1

SC1 Type1 S

Power anode of input terminal Used to drive photoelectrical coupler in the input terminal DC12～24V, current ≥100mA

Servo on input terminal SON ON: allow driving operation SON OFF: the driver is closed and stops work; the motor is under free state Note 1 before switching SON OFF to SON ON, the motor must be in stillness; Note 2: after SON ON is switched on, wait at least 50ms before inputting commands.

Input terminal for alarm stopping ALRS ON: stop system alarm ALRS OFF: maintain system alarm Note1: Alarm for failure code larger than 8 can not be stopped with this method; it needs to cut off the power for examination and repair, and then switch on power. Input terminal for CCW(counter clockwise) drive stopping FSTP ON: allow CCW driving operation FSTP OFF: stop CCW driving operation Note 1: If limit of the machine is surpassed, the CCW torque will remain zero when switching on OFF. Note 2: The function of FSTP OFF can be screened off or the function of “ON” can permanently surface by setting No.20 parameter. Input terminal for CW(clockwise direction) drive stopping RSTP ON: allow CW driving operation RSTP OFF: stop CW driving operation Note 1: If limit of the machine is surpassed, the CW torque will remain zero when switching on OFF. Note 2: The function of FSTP OFF can be screened off or the function of “ON” can permanently surface by setting No.20 parameter. Input terminal for clearing position error meter CLE ON: Position control ; the position error meter will be cleared Input terminal for speed choice 1 Under the speed control mode, the combination of SC1 and SC2 can be used to select different internal speeds SC1 OFF,SC2 OFF: internal speed 1 SC1 ON,SC2 OFF: internal speed 2 SC1 OFF,SC2 ON: internal speed 3 SC1 ON,SC2 ON: internal speed 4 Note: the values of internal speed 1 to 4 can be changed with parameters.

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DA98D User Manual

CN1-41

CN1-25

CN1-10

CN1-20

CN1-5

CN1-35

Command

Pulse

Inhibiting

Command

Pulse

Inhibiting

Speed

Choice 2

CCW

Torque

Limiting

CW Torqu

Limiting

Servo

Ready fo

Output

Servo Alarm

Output

Output fo

Positioning

Completing

Output fo

Speed

Completing

INH Type1 P

SC2 Type1 S

FIL Type1

RIL Type1

SRDY Type2

ALM Type2

COIN Type2 P

SCMP Type2 S

Input terminal for command pulse inhibiting INH ON: command pulse input is inhibited INH OFF: command pulse input is valid Input terminal for position command pulse inhibiting INH ON: command pulse input is inhibited INH OFF: command pulse input is valid

Input terminal for speed choice 2 Under the speed control mode, the combination of SCA and SC2 can be used to select different internal speeds. SC1 OFF,SC2 OFF: internal speed 1 SC1 ON:SC2 OFF: internal speed 2 SC1 OFF,SC2 ON: internal speed 3 SC1 ON,SC2 ON: internal speed 4

Input terminal for CCW(counter-clockwise direction) torque limiting FIL ON:CCW torque is limited within the scope of parameter No.36 FIL OFF: CW torque is not limited by parameter No.36 Note 1: No matter FIL is on or off, CCW torque will still be limited by parameter No.34. Generally, parameter No.34 > parameter No.36 Input terminal for CW(clockwise direction) torque limiting RIL ON: CW torque is limited within the scope of parameter No.37. RIL OFF: CW torque is not limited by parameter No.37 Note 1: No matter FIL is on or off, CCW torque will still be limited by parameter No.35. Generally, parameter No.351 > parameter No.371 Terminal of Servo Ready for Output SRDY ON: Control power supply and main power supply are normal, the driver alarm does not occur, and the servo gets Ready for Output ON. SRDY OFF: the main power supply is not cut off or the driver alarm occurs, and the servo gets Ready for outputting OFF. Output terminal for servo alarm ALM ON: servo driver alarm dose not occur, and the servo is Ready for outputting ON. ALM OFF: servo driver alarm occurs and the servo is Ready for outputting OFF. Output terminal for positioning completing COIN ON: when the value of position error meter is within the set scope of positioning, ON will be output for positioning completing. Output terminal for speed completing SCMP ON: when the speed reaches or surpasses the set speed, On will be output for speed completing.

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DA98D User Manual

Common CN1-32 CN1-33

edge of

Output

Common edge

terminal

Z-Phase CN1-37

output of

CZ Type2

Encoder

CN1-26

Zero Speed

Clamping

ZSL Type1

CN1-36 CZCOM

CN1-30 PULS+

CN1-15

Command

Pulse Input

PULS-

Type3 P

CN1-29 SIGN+

CN1-14

Command

Pulse Input

SIGN-

Type3 P

Earthling common edge of control signal output terminal (excluding CZ)

Output terminal for Z-phase of encoder Output Z-phase pulse of servo motor’s photoelectric code CZ ON: Z-phase signal appears

ZSL ON: Servo driver is not under the control of analog voltage, and zero speed is output. ZSL OFF: servo driver is under the control of analog voltage Common edge of encoder’s Z-phase output terminal

Input terminal for external command pulse Note 1: the pulse input modes are set by PA14. Mode of command pulse+ symbol; Mode of CCW/CW command pulse

CN1-31

CN1-2 CN1-16

CN1-17

CN1-1

CN1-7

CN1-6

CN1-27

CN1-12

CN1-28

Shielding

Ground

Wire

Analog

Ground

Input

Simulation

Command

Input Analog command Ground

Positive

Terminal of

Hold Output

Negative

Terminal of

Hold

Output

Code disc

Pulse A+

Code disc

Pulse A-

Code disc

Pulse B+

FG Earthling shielding terminal

AGND S Analog ground

VCMD S

Type4

HOLD+ S/P

Type2

HOLD-

S/P

Input analog command+-10V Input resistance of 20K

Open-loop output of drain electrode, the photoelectric coupler is open under normal operation. ON is output The power is off and the drive stops. When alarm stops, the photoelectric coupler is closed. OFF is output

Feedback output signal of encoder. The standard

PAOUT +

Type5

is 2500/line Output linear speed can be adjusted through electronic gears of output PA 41 and PA42, e.g. if

PAOUT- S

the encoder has 2500 pulses per round, setting PA41/42=4/5, then the A and B-phase signals output from drive unit will be 2500 X

PBOUT +

PA41/PA42=2000 pluses/round.

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DA98D User Manual

CN1-13

CN1-42

CN1-43

Code disc

Pulse B-

Code disc

Pulse Z+

Code disc

Pulse Z-

PBOUT-

PZOUT +

PZOUT-

Feedback Signal Terminal CN2

Table 3.3 Encoder Signal Input/Output Terminal CN2

Terminal No.

Terminal Name

Terminal Mark

Mark I/O Mode CN2-5 CN2-6 CN2-17

Power Output+ +5V

CN2-18 CN2-1 CN2-2 CN2-3

Power Output- OV CN2-4 CN2-16

CN2-24

CN2-12

CN2-23

CN2-11

CN2-22

CN2-10

CN2-21

CN2-9

CN2-20

CN2-8

Encoder A＋Input

Encoder A－Input

Encoder B＋Input

Encoder B－Input

Encoder Z＋Input

Encoder Z－Input

Encoder U＋Input

Encoder U－Input

Encoder V＋Input

Encoder V－Input

A+

A-

B+

B-

Z+

Z-

U+

U-

V+

V-

3.3 I/O Interface Principle

Type4

One pulse will be output from one round of the motor.

Color Functions

Photoelectric encoder of the servo motor employs ＋ 5V power supply; When the cable is relatively long, it should use multiple component wires that are connected in parallel.

Connected with A+ phase of the servo motor’s photoelectric encoder

Connected with A- phase of the servo

motor’s photoelectric encoder Connected with B+ phase of the servo motor’s photoelectric encoder Connected with B- phase of the servo motor’s photoelectric encoder Connected with Z+ phase of the servo motor’s photoelectric encoder Connected with Z- phase of the servo motor’s photoelectric encoder Connected with U+ phase of the servo motor’s photoelectric encoder Connected with U- phase of the servo motor’s photoelectric encoder Connected with V+ phase of the servo motor’s photoelectric encoder Connected with V+ phase of the servo motor’s photoelectric encoder

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DA98D User Manual

1) Switch Value Input Interface

COM+

Fig. 3.4 Type1 Switch Value Input Interface

(1) Power supply is provided by the user, DC12～24V, current≥100mA; (2) Note: if the electrodes are reversely connected, the servo driver will not work.

servo amplifier

Driver Sideface

4.7K12~24V

2) Switch Value Output Interface

Driver Side

servo amplifier

max 50mA

max 25V

Fig. 3.5 Type2 Switch Value Ouput Interface

(1) The external power supply is provided by the user, but attention must be given to the case

that if electrodes of the power supply are reversely connected, the servo drive unit may be damaged.

(2) The output is an open-circuit form of collector, with a maximal current of 50mA and a maximal

external power voltage of 25V. Therefore, the load of switch value output signal must satisfy this limited requirement. If the limited requirement is surpassed or the output terminal is directly connected with the power supply, the servo drive unit will be damaged;

(3) If the loads are inductive ones like relay, two sides of the load must be reversely connected in

parallel with the continuous current diode. If the continuous current diode is reversely connected, the servo drive unit will be damaged.

3) Analog Input Interface

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DA98D User Manual

1. Input signal is connected with twisted-pair cable lines.

2. The circuit adopts the enlarged different-mode form, with an input resistance of 20K.

4) Pulse Output Interface

5 6

Fig. 3.6 Type4 Analog Command Input Interface

Driver Sideface

servo am pl i fier

PULS+

220

PULS-

SIGN+

220

SIGN-

Fig. 3.7 Type3 Differential Drive Mode of Pulse Input Interface

servo am plifier

VCC

PULS+

PULS-

SIGN+ SIGN-

Driver Side

220

Fig. 3.8 Type4 Uni-polar Drive Mode of Pulse Input Interface

（1） For correctly transmitting pulse data, it is recommended to adopt the differential drive mode; （2） Under differential drive mode, AM26LS31 and MC3487 or similar cable driver of RS422; （3） The uni-polar drive mode will reduce the motion frequency. According to the requirements on

the pulse amount input circuit: driving current 10～15mA and limited maximal external power voltage of 25V, empirical data are as follows: VCC=24V,R=1.3 ～ 2k;VCC=12V,R=510 ～

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DA98D User Manual

820Ω;VCC=5V,R=82～120Ω.

（4） When adopting uni-polar drive mode, the external power supply will be provided by the user, but

attention must be given to the case that if the power electrodes are reversely connected, the servo drive unit may be damaged.

（5） Refer to Table 3.4 for details about the pulse input forms, in which the arrow means counting

trend. Table 3.5 shows the time sequence and parameters for pulse input.

Table 3.4 Pulse Input Forms

Forms of Pulse

CCW CW Set Parameter Values

Command

Symbol for Pulse

Train

PULS

Command Pulse＋

Symbol

SIGN

CCW Pulse Train

CW Pulse Train

PULS

CCW Pulse/CCW

Pulse

SIGN

Table 3.5 Time sequence Parameters for Pulse Input

Parameter Differential Drive Input Uni-polar Drive Input

>2μS >5μS

th >1μS >2.5μS

tl >1μS >2.5μS

trh <0.2μS <0.3μS

trl <0.2μS <0.3μS

ts >1μS >2.5μS

>8μS >10μS

qck

tqh >4μS >5μS

tql >4μS >5μS

<0.2μS <0.3μS

qrh

<0.2μS <0.3μS

qrl

tqs >1μS >2.5μS

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DA98D User Manual

PULS

SIGN

90%

10%

90%

10%

CCW

Fig. 3.9 Time sequence Diagram for Pulse＋Symbol Input Interface (Maximal Pulse

Frequency:500kHz)

90%

PULS

10%

SIGN

90%

10%

CCW

Fig. 3.10 Time sequence for CCW Pulse/CW Pulse Input Interface(Maximal Pulse

Frequency:500kHz)

4) Driver Speed Signal Output Interface

Driver Side

servo ampli fi erservo motor

X+ X-

X=A,B,Z,U,V,W

Fig. 3.11 Type5 Driver Speed Signal Output Interface

5) Input Interface for Servo Driver’s Photoelectric Encoder

AM 26LS32

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DA98D User Manual

Motor Side

Driver Side

X+ X-

servo ampli fi erservo motor

AM 26LS32

X=A,B,Z,U,V,W

Fig. 3.12 Input Interface for Servo Driver’s Photoelectric Encoder

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DA98D User Manual

Chapter Four Parameters

Attention

z Personnel involved in parameter adjusting must know parameter meanings for wrong

setting may damage the equipment or hurt the personnel.

z It is recommended that the parameters should be adjusted when the motor has no load. z The default motor parameters are adaptable to GSK SJT and Huazhong ST series of

servo motors. If other servo motors are used, the parameters shall be adjusted accordingly; otherwise, the motor may not work normally.

4.1 Checklist of Parameters

z The following factory parameters listed are used to match the drive unit of GSK 10SJT-M020E

digital control machine tool (2N.m,3000r/min) as an example. Related parameters of different motors are not the same.

z Software version is V804

Table 4.1 Checklist of Parameters

No. Name Mode Parameter

range 0 Password P,S 0~9999 315 1 Model Code P,S 0~569 30* 2 Software Version (Read only) P,S * * 3 Initial Display State P,S 0~20 0 4 Choice of Control Mode P,S 0~5 0 5 Speed Proportion Gain P,S 5~2000 100* Hz 6 Speed Integral Time Constant P,S 1~1000 20* ms

7 Torque Command Filter P,S 1~500 100 % 8 Low pass Filter for Speed Inspection P,S 1~500 100 % 9 Position Proportion Gain P 1~1000 40 1/S 10 Position Feed Forward Gain P 0~100 0 % 11 Low Pass Filter Cut-off Frequency for

Position Feed-forward

12 Position Command Pulse Frequency

Division Numerator

13 Position Command Pulse Frequency

Division Denominator 14 Position Command Pulse Input Mode P 0~1 0 15 Position Command Pulse Direction

Reversing 16 Range for Positioning Completing P 0~30000 20 Pulse 17 Inspection Range for Position Excess P 0~30000 400 ×100

18 Invalid Position Excess Error P 0~1 0 19 Position Command Smoothing Filter P 0~30000 0 0.1ms 20 Invalid Drive Stopping Input P,S 0~1 0 21 JOG Operation Speed S -3000~3000 120 r/min 22 Reservation 23 Maximal Speed Limit P,S 0~4000 3600 r/min 24 Internal Speed 1 S -3000~3000 0 r/min 25 Internal Speed 2 S -3000~3000 100 r/min

P 1~1200 300 Hz

P 1~32767 1

P 0~1 0

Factory Values

Unit

Pulse

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DA98D User Manual

26 Internal Speed 3 S -3000~3000 300 r/min 27 Internal Speed 4 S -3000~3000 -100 r/min

28 Speed Completing S 0~3000 500 r/min 29 Reservation 30 Linear Velocity Conversion Numerator P,S 1~32767 10 31 Linear Velocity Conversion

P,S 1~32767 1

Denominator 32 Decimal Position of Linear Velocity P,S 0~5 3 33 Zero Speed Scope for Analog

S 0~1000 3

Command 34 Internal CCW Torque Limiting P,S 0~300 300* % 35 Internal CW Torque Limiting P,S -300~0 -300* % 36 External CCW Torque Limiting P,S 0~300 100 % 37 Internal CW Torque Limiting P,S -300~0 -100 % 38 Torque Limiting for Speed Trial

S 0~300 100 %

Operation and JOG Operation 39 Acceleration Time Constant S 1~10000 0 ms 40 Deceleration Time Constant S 1~10000 0 ms 41 Numerator of Output Electronic Gear

S 1~255 1

Ratio 42 Denominator of Output Electronic Gear

S 1~255 1

Ratio 43 Choice of Speed Command S 0~1 1 44 High Speed AD Zero Point S 412~1600 1024 45 Low Speed AD Zero Point S 412~1600 1024 46 Motor Rotation Direction Control S 0~3 0 47 Analog Command Gain S 20~3000 100 48 Anti-jamming Scope for Analog

S 0~1000

Command 49 Choice of Zero Adjustment Channels

S 0~1 0

for Analog Speed 52 Analog Command Transition Mode S 0~1 0 53 Zero-point Slope S 0~1023 0

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DA98D User Manual

4.2 Functions of Parameters

Table 4.2 Functions of Parameters

No Name Functions

Prevent the parameters from being wrongly changed. Generally, when needing to set parameters, first set the parameter as the correct password, then set the parameters. After commissioning, reset the parameter back to 0 to ensure that the parameter will not be wrongly changed in the future.

0 Password

1 Model Code

Software

Version

Passwords have different classes respectively for user parameters, system parameters and whole parameters. When changing model code parameter (PA1), the model code password must be used. Other passwords can not be used for changing this parameter. User password is 315. Model code password is 385.

Correspond to the same series of drive units and motors with different frequency classes. Different model codes correspond to different default parameter values. And when restoring the function of default parameter values, the parameter concerned must be correct. When EEPROM alarm (No.20) occurs, the parameter must be reset after the repair, then restore the default parameter value. Otherwise, the driver many not work normally or be damaged. When changing the parameter, first set the password PAO as 385, then the parameter concerned can be changed. Please refer to this chapter for detained meanings about parameters.

The software version No. can be checked, but cannot be changed.

Parameter

range

0~9999

0~69

Initial Display State

Select display states of the driver screen after being electrified. 0: Display motor rotation rate; 1: Display that current position is lower by 5 (pulses); 2: Display that current position is higher by 5; 3: Display that current position command (means accumulated pulse value)is lower by 5; 4: Display that current position command (means accumulated pulse value)is higher by 5; 5:Display that position error is lower by 5; 6: Display that position error is higher by 5; 7:Display motor torque; 8:Display motor current; 9:Display linear velocity; 10:Display control mode; 11:Display position command pulse frequency; 12:Display speed command; 13:Display torque command; 14:Display absolute position of rotor during one round; 15:Display input terminal state; 16: Display output terminal state; 17:Display encoder input signal; 18:Display operation state; 19:Display alarm code; 20: Reservation.

0~20

Page 39

Choice of Control

Mode

DA98D User Manual

①Control mode of the driver can be selected by setting this parameter: 0:Position control mode; 1:Speed control mode; 2:Tiral operation control mode; 3:JOG control mode; 4: Encoder’s zero adjusting mode. 5: Opern-loop operation mode (used for testing motor and encoder). ② Position control mode: position command is input through the pulse input port Speed control mode: speed command is input through the pulse input port or analog input, which can be determined by the parameter (internal and external speed command choice) PA42. When internal speed is employed, the combination of SC1 and SC2 can be used to select different internal speeds. SC1 OFF,SC2 OFF : Internal speed 1 SC1 ON,SC2 OFF : Internal speed 2 SC1 OFF,SC2 ON : Internal speed 3 SC1 ON,SC2 ON : Internal speed 4 Trial operation control mode: the speed command is input through the keyboard, used to test driver and motor. JOG control mode, i.e. itching mode: after the JOG operation is entered, press down ↑ and hold on, the motor will run at JOG speed; leave the key, the motor will stop and keep zero speed; press down ↓ and hold on, the motor will reversely run at JOG speed; leave the key, the motor will stop and keep zero speed. Encoder’s zero adjusting mode: used to adjust zero point of the encoder disc when leaving factory

0~5

Speed Proportion

Gain

Speed Integral Tim

Constant

Torque

Command Filter

Set proportion gain of the speed regulator. The higher the value is set, the gain will be larger and rigidity greater. Parameter value shall be determined by specific models and loads of the servo drive unit. Generally, the greater the load inertia is, the higher the value will be set. Under the condition that the system will not produce vibration, the value can be set as high as possible. Set integral time constant of the speed regulator The lower the value is set, the faster the integral speed will be and the greater the rigidity. Parameter value shall be determined by specific models and loads of the servo drive unit. Generally, the greater the load inertia is, the higher will the value be set. Under the condition that the system will not produce vibration, the value can be set as low as possible.

Set features of the torque command filter to inhibit resonance (sharp vibration noise produced by motor) produced by the torque; If the motor produces sharp vibration noise, please reduce the parameter value; The lower the value is, the smaller the cut-off frequency will be and the less the motor noise. If the load inertia is very great, the set value can be properly reduced. If the value is too low, the response will become slow and may cause instability. The higher the value is, the greater the cut-off frequency will be and the faster the response. If relatively high machinery rigidity is needed, the value can be increased properly.

5 Hz 2000Hz

1 ms 1000ms

1%~500%

Page 40

Low Pass

Filter for

Speed Inspection

Position Proportion

Gain

Position Feed-forward

Gain

Low Pass Filter Cut-off

Frequency for Position Feed-forward

Position Command Pulse

Frequency Division Numerator

Position Command Pulse

Frequency Division Denominator

DA98D User Manual

Set features of low pass filter for speed inspection. The lower the value is, the smaller will be the cut-off frequency will be and the less the motor noise. If the load inertia is very great, the set value can be properly reduced. If the value is too low, the response will become slow and may cause vibration.

1%~500%

The higher the value, the greater the cut-off frequency will be and the faster the response. If relatively fast response is needed, the set value can be properly increased. Set proportion gain of the position regulator. The higher the value is, the greater the gain will be and the less the position lagging amount will be under the condition of command pulse with the same frequency. But if the value is too high, it may

1~1000 /S cause vibration or over-adjustment. The parameter is determined by specific models of the servo drive unit and concrete loads. Set feed-forward gain of the position loop. When the value is set at 100%, it means that the position lagging value will be always 0 under command pulse with any frequency. If the position feed-forward gain is increased, the high-speed response feature of the control system will be enhanced, but the

0%~100％ position loop of the system will be instable and easy to cause vibration. If not specially requiring very fast response, the feed-forward gain of the position loop is generally set as 0.

Set low pass filter cut-off frequency of the position feed-forward. The function of this filter is to enhance stability of the composite position control.

1 Hz

1200Hz

Set frequency division of the command pulse (electronic gear). Under position control mode, it can be conveniently matched with various pulse sources by setting PA12 and PA13 parameters, thus reaching the ideal control resolving power (i.e. angle/pulse) required by the user.

4××=× CNGP

P: Pulse number of the input command; G: Electronic gear ratio;

N: Motor rotation rounds;

1~32767 C: Coil round number of the photoelectric encoder. In this system C

＝2500. 〖Example〗 if the input command pulse is 6000, the servo motor

rotates one round:

××

6000

4250014

then the parameter PA12 is set as 5 and PA13 as 3. ⑤ Recommended range of electronic gear ratio:

≤≤ G

①Refer to parameter PA12. 1~32767

Page 41

Position

Command

Pulse Inpu Mode

Position Command

Pulse Direction Reversing

Range fo

Positioning Completing

Inspection Range fo

Position Excess

Invalid Position

Excess Error

Position Command

Smoothing Filter

Invalid Driv

Stopping Input

DA98D User Manual

Set input mode of the position command pulse. Three input modes can be set through parameters: 0: Pulse＋symbol; 1:CCW pulse/CW pulse; CCW is counter-clockwise rotation observed from the servo motor shaft direction, defined as positive direction. CW is clockwise rotation of observed from the servo motor shaft direction, defined as negative direction.

Set as 0:Normal; 1: opposite to position command pulse direction.

Set pulse range for positioning completing under position control mode. The parameter provides a basis for judging whether drive unit has completed the positioning under position control mode. When the remaining pulse number in the position error meter is less than or the same with this parameter value, the driver is deemed to complete the positioning with the positioning completing signal of COIN ON. Otherwise it will be COIN OFF. SCMP.Under position control mode, the positioning completing signal of COIN is output; under other control modes, the speed completing signal will be output. Set inspection range for position excess alarm. Under the position control mode, position excess alarm will occur in the servo drive unit when the number on the position error meter exceeds this parameter value. ①Set as 0: Valid inspection for position excess alarm; 1: Invalid inspection for position excess alarm, stop inspecting position excess error. Smoothing filter of the command pulse, acceleration and deceleration with exponential form, and the value means time constant.

The filter will not lose input pulse but it may cause delayed command; The filter is used in: Upper controller without deceleration function; Electronic gear with relatively high frequency division (>10); Relatively low command frequency; Motor with leaping-forward and instable steps during operation. When the position points to 0, the filter will not work. ①Set as 0: Valid CCW and CW drive stopping. When CCW drive stopping switch (FSTP) is ON, CCW drive is allowed; when CCW drive stopping switch (FSTP) is OFF, CCW torque keeps 0. Likewise, if CCW and CW drive stopping switches are both OFF, the alarm for drive stopping input error will occur. 1: Cancel CCW and CW input stopping. No matter what state CCW and CW drive stopping switches are in, CCW and CW drive will be allowed. Meanwhile, if CCW and CW drive stopping switches are both OFF, the alarm for drive stopping input error will not occur.

0~1

0 ~3000 pulses

0 ~3000 ×100 pulses

0~1

0ms

30000×0.1 ms

0~1

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DA98D User Manual

JOG Operation Speed

Set JOG operation speed.

-3000 r/min ~3000r/min

22 Reservation

Maximal

Speed Limit

Set maximal speed limit of the servo motor. Unrelated with the rotation direction. If the set value surpasses the rated rotation rate, the actual highest speed limit will be the rated rotation rate.

0 r/min ~3000 r/min

Set internal speed 1

Internal Speed1

Under the speed control mode, the combination of SC1 OFF and SC2 OFF will be used to select internal speed 1 as the speed

-3000 r/min

~3000 r/min

command.

Set internal speed 1

Internal Speed 2

Under the speed control mode, the combination of SC1 ON and SC2 OFF will be used to select internal speed 2 as the speed

-3000 r/min ~3000 r/min

command.

Set internal speed 3

Internal Speed 3

Under the speed control mode, the combination of SC1 Off and SC2 ON will be used to select internal speed 3 as the speed

-3000 r/min ~3000 r/min

command.

Set internal speed 4

Internal Speed 4

Under the speed control mode, the combination of SC1 On and SC2 ON will be used to select internal speed 4 as the speed

-3000 r/min ~3000 r/min

command.

Speed

Completing

Linear Velocity

Conversion Numerator

Linear Velocity

Conversion Denominator

Set speed completing. Under non-position control modes, if the motor speed surpasses this set value, the signal of SCMP ON will be output. Otherwise, the signal of SCMP OFF will be output. Under the position control mode, this parameter will not be used.

0 r/min ~3000

r/min Unrelated to rotation direction. Compared with other apparatus, it has slow-moving feature.

Used to display linear operation speed of the system

Decimal position of the linear velocity is determined by parameter PA32. 0 means no decimal, 1 means the decimal position is at the

1~32767 tens, 2 means the decimal point is are the hundreds… the process

goes on by analogy. 〖Example〗 If the servo motor drives a 10mm ball lead screw, the linear velocity conversion numerator is set at10, the denominator at 1, and decimal point at 3, then the linear velocity can be displayed on the screen (counted in m/min). When the motor velocity is 500r/min, the linear velocity will be displayed as 5000m/min.

①Refer to parameter PA30. 1~32767

Page 43

Decimal

Position of

Linear Velocity

Zero Speed Scope for Analog

Command

Internal CCW Torque Limiting

Internal CW Torque Limiting

External CCW Torqu Limiting

DA98D User Manual

Refer to Parameter PA30.① 0~5

Since there is jamming in the process of transmitting analog command, the command received is not necessarily 0 when the upper machine gives the analog zero speed command, under which circumstances the motor can not stop steadily and cause

0～1000 shake. The shake caused by jamming can be inhibited by increasing this parameter, but the response speed will be reduced and the processing error be increased at that same time.

Set internal CCW torque limiting for the servo motor. The value set is the percentage of rated torque, e.g., if the value needs to be set is two times as much as the rated torque, set the value at 200. At any time, this limit will be valid.

0%~300%

If the value set surpasses the maximal over-loading capacity of the system, the actual torque limiting will be the maximal over-loading capacity permitted by the system.

Set internal CW torque limiting for the servo motor. The value set is the percentage of rated torque, e.g., if the value needs to be set is two times as much as the rated torque, set the value at -200. At any time, this limit will be valid.

-300%~0%

If the value set surpasses the maximal over-loading capacity of the system, the actual torque limiting will be the maximal over-loading capacity permitted by the system.

Set external CCW torque limiting for the servo motor. The value set is the percentage of rated torque, e.g., if the value needs to be set is as much as the rated torque, set the value at

100. This limiting will be valid only when the input terminal (FIL) for CCW torque limiting is ON.

0%~300%

When the limiting is valid, the actual torque limiting will be the minimal one among the three values of maximal over-loading capacity, internal CCW torque limiting and external CCW torque limiting permitted by the system.

Internal CW Torque Limiting

Torque Limiting for Speed Trial

Operation and JOG Operation

Set external CW torque limiting for the servo motor. The value set is the percentage of rated torque, e.g., if the value needs to be set is as much as the rated torque, set the value at

-100. This limiting will be valid only when the input terminal (FIL) for CCW torque limiting is ON. When the limiting is valid, the actual torque limiting will be the minimal one among the three values of maximal over-loading capacity, internal CW torque limiting and external CW torque limiting permitted by the system.

Set torque limiting under the modes of speed trial operation and JOG operation. Unrelated to rotation direction, valid for both directions. The value set is the percentage of rated torque, e.g., if the value needs to be set is as much as the rated torque, set the value at

-100. Both internal and external torque limiting will still be valid.

-300%~0%

0%~300%

Page 44

DA98D User Manual

Acceleration Time Constant

Deceleration Time Constant

Numerator of Output Electronic

Gear Ratio

Denominator of Output

Electronic Gear Ratio Choice of Speed

Command

High Speed

AD Zero Point Low Speed

AD Zero Point Motor Rotation Direction

Control

The set value means the acceleration time of motor ranging from 0r/min to 1000r/min The acceleration and deceleration have a linear feature. Only valid for speed control mode, invalid for position control mode.

1ms

~10000ms If the drive unit is used together with external position loop, thi parameter shall be set as 0. The set value means the deceleration time of motor ranging from 0r/min to 1000r/min The acceleration and deceleration have a linear feature. Only valid for speed control mode, invalid for position control mode.

1ms

~10000ms If the drive unit is used together with external position loop, thi parameter shall be set as 0.

Feedback pulse from each coil of the encoder will be output through the gear within the drive unit. E.g., there are 2500 pulses in each coil of the encoder, setting PA41/42=4/5, then the A and

0～255 B-phase signals output from the drive unit will be 2500 X PA41/PA42=2000 pulses/coil.

This parameter must be more than or the same with parameter No.41.

0～255

Whether the operation speed is from internal speed or analog command: 0 Internal speed

0~1

1 Analog command

When restoring default value, this parameter will not be recovered. 412~1600

0 Normal 1 Opposite to the analog speed command 2 Opposite to the output pulse rotation direction

0～3

3 Opposite to both.

Analog

Command

Gain Anti-jamming Scope for

Analog Command

Choice of

Zero

Adjustment

Channels for

Analog

Speed

Analog

Command

Transition

Mode

Analog command is transited to speed gain.

The function is the same with parameter No.33, but the function range includes all speeds rather than zero speed only. It is recommended that this parameter not be used simultaneously together with parameter No.33.

0 Low speed AD for low speed and high speed AD for high speed. 1 High speed AD for both high and low speed This parameter is used only for AD zero adjusting: to improve the resolving power of analog command, AD switch with different multiplying factors are employed for high and low speed. First set this parameter as 1 to adjust zero point for high speed AD, then set the parameter as 0 to adjust zero point for low speed AD.

0 Speed AD is transited to speed command with curve of second order 1 Speed AD is transited to speed command with straight line.

20～3000

0～1000

0～1

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DA98D User Manual

Zero-point

Slope

When analog command AD is transited to speed command with curve of second order, the zero-point slope for the curve is 1024

0～1023

times.

4.3 List for comparison of Modle Codes & Parameters and Motor

Table 4.3 List for Comparison of Parameter No.1 and ST Series of Servo Motors

№1 Parameter 30 110ST-M02030H,0.6kw, 300V, 3000r/min 4A, 0.33×10-3kg.m 35 110ST-M04030H,1.2kw, 300V, 3000 r/min, 5A, 0.65×10-3kg.m 36 110ST-M05030H,1.5kw, 300V, 3000 r/min, 6A, 0.82×10-3kg.m 37 110ST-M06020H,1.2kw, 300V, 2000 r/min, 6A, 1.00×10-3kg.m 38 110ST-M06030H,1.6kw, 300V, 3000 r/min, 8A, 1.00×10-3kg.m2 ※ 39 130ST-M04025H,1.0kw, 300V, 2500 r/min, 4A, 0.85×10-3kg.m 45 130ST-M05025H,1.3kw, 300V, 2500 r/min, 5A, 1.06×10-3kg.m 46 130ST-M06025H,1.5kw, 300V, 2500 r/min, 6A, 1.26×10-3kg.m 47 130ST-M07720H,1.6kw, 300V, 2000 r/min, 6A, 1.58×10-3kg.m 49 130ST-M10015H,1.5kw, 300V, 1500 r/min, 6A, 2.14×10-3kg.m 50 130ST-M10025H,2.6kw, 300V, 2500 r/min, 10A, 2.14×10-3kg.m2 ※ 51 130ST-M15015H,2.3kw, 300V, 1500 r/min, 9.5A, 3.24×10-3kg.m

Table 4.4 List for Comparison of Parameter No.1 and SJT Series of Servo Motors

№1 Parameter 60 110SJT-M020E,0.6kw, 300V, 3000 r/min, 3A, 0.34×10-3kg.m 61 110SJT-M040D,1.0kw, 300V, 2500 r/min, 4.5A, 0.68×10-3kg.m2 62 110SJT-M060D,1.5kw, 300V, 2500 r/min, 7A, 0.95×10-3kg.m2 ※ 63 130SJT-M040D,1.0kw, 300V, 2500 r/min, 4A, 1.19×10-3kg.m2 64 130SJT-M050D,1.3kw, 300V, 2500 r/min, 5A, 1.19×10-3kg.m2 65 130SJT-M060D,1.5kw, 300V, 2500 r/min , 6A, 1.95×10-3kg.m2 66 130SJT-M075D,1.88kw, 300V, 2500 r/min, 7.5A, 1.95×10-3kg.m2 ※ 67 130SJT-M100B,1.5kw, 300V, 1500 r/min, 6A, 2.42×10-3kg.m2 68 130SJT-M100D,2.5kw, 300V, 2500 r/min, 10A, 2.42×10-3kg.m2 ※ 69 130SJT-M150B,2.3kw, 300V, 1500 r/min, 8.5A, 3.1×10-3kg.m2 ※

Models and Technical Parameters of Servo Motors Remarks

※

Models and Technical Parameters of Servo Motors Remarks

Note: The driver matched with motors marked with “ ” in the above tables shall adopt ※

thicker heat radiator.

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DA98D User Manual

Chapter Five Alarming and Handling

Attention

z Personnel involved in examination and repair must possess corresponding professional

knowledge and abilities.

z Do not touch driver and motor at least 5 minutes after the power has been cut off for fear of

electric shock and heat injury.

z After alarm for the failure of drive unit occurs, the unit can only put into operation after the

trouble is shot according to the alarm code.

z Do confirm that the SON (servo ready) signal is invalid before resetting the alarm for fear that

the sudden staring of motor may cause accidents.

5.1 List of Alarms

Table 5.1 List of Alarms

Alarm Codes Alarm name Contents 0 Normal 1 Excessive Speed Speed of the servo motor exceeds the set value 2 Over-voltage in Main Circuit Voltage of the main circuit power is excessive 3 Voltage Shortage in Main

Circuit

4 Position Excess Value in the position error meter surpasses the

5 Motor Overheating Excessively high motor temperature 6 Saturation Failure of Speed

Regulator 7 Abnormal Drive Stopping Both CCW and CW drive stopping are OFF. 8 Overflow of Position Error

Meter 9 Encoder Failure Encoder signal error 10 Voltage Shortage in Control

Power 11 IPM Module Failure IPM intelligent module breaks down 12 Excessive Current Excessive motor current 13 Overload Overload in servo driver and motor

14 Braking Failure Failure in braking circuit 15 Counting Error of Encoder Abnormal counting in Encoder 20 EEPROM Error EEPROM Error

30 Z Pulse Losing in Encoder Wrong Z pulse in encoder 31 UVW Signal Error in Encoder Encoder’s UVW signal is wrong or not matchable

32 Code Violation of Encoder’s

UVW Signal

Voltage of the main circuit power is too low

set value.

Long-time saturation of the speed regulator

Absolute Value of the number in the position error meter exceeds 2

The control power of ±15V is on the low side

(instantaneous overheating)

with encoder or all-low level exists in UVW signal

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5.2 Methods for Handling Alarms

Table 5.2 Methods for Handling Alarms

Alarm Code

Alarm Name

Excessive Speed

Overvoltage in Main Circuit

Operation State Occur when switching on

Reasons Handling Methods

①Failure in control power board ②Encoder failure

the control power

Excessively high input command pulse frequency. Excessively small acceleration/ deceleration time constant results

in overshoot. Occur during motor operation

The input electronic gear ratio is

excessively high.

Encoder failure. Replace servo motor.

Bad encoder cable. Replace encoder cable.

Instable servo system cause

overshoot.

Excessively large load inertia.

Occur immediately after the motor is started

Zero-point error in encoder.

①Wrong connection of motor lead

of U, V and W.

②Wrong connection of encode

cable leads Occur when switching on control

Failure in circuit board. Replace servo drive unit.

power Occur when switching on main power

①Excessively high power voltage.

②Abnormal wave pattern of power

voltage. supply

Disconnection of braking

resistance.

①Braking transistor is damaged.

②Internal braking resistance is

damaged.

Occur during motor operation

Insufficient capacity in the braking

return circuit.

①Replace servo driver. ②Replace servo motor.

Correctly set the input command pulse. Increase acceleration/deceleration tim constant.

Correctly set the ratio.

①Reset related gains. ②If the gains cannot be set at

a proper value, reduce inertia rate for load rotation

①Reduce load inertia. ②Replace it with driver and

motor of greater frequency.

①Replace servo motor ②Contact the manufacturer

for readjusting the zero point.

Correct wiring.

Examine the power supply source.

Rewiring.

Replace servo drive unit.

①Reduce start/stop frequency . ②Increase

acceleration/deceleration time constant.

③Reduce torque limiting value. ④Reduce load inertia. ⑤Replace it with driver and

motor of greater frequency.

Page 48

Voltage Shortage in Main Circuit

Occur when switching on main power supply

Occur during motor operation

Occur when switching on control power

After switching on

Position Excess

main power supply and control wire, the motor does not work when inputting command pulse

DA98D User Manual

①Failure in circuit board.

②Power fuse is damaged.

③Failure in soft start circuit.

Replace servo drive unit.

④Damaged rectifier.

①Excessively low power voltage.

②Temporary power failure for

Examine the power supply.

more than 20mS.

①Insufficient power capacity .

②instantaneous power failure.

Heat radiator overheating.

Examine the power supply.

Examine load.

Failure in circuit board.

Replace servo driver.

①Wrong connection of motor leads

of U, V and W.

②Wrong connection of encoder

Correct wiring.

cable leads.

Encoder failure.

Set inspection range for position

excess.

Position proportion gain is too

small.

Insufficient torque.

Replace servo motor.

Extend inspection range for position excess.

Increase the gain.

①Examine torque limiting value.

②Reduce loading capacity. ③Replace it with drive unit and

motor of greater frequency. Excessively high command puls frequency.

Reduce the frequency.

Motor

overheating

Saturation Failure of

Speed Regulator

Abnormal Drive Stopping

switching on control power

Occur during motor operation

Failure in circuit board. Replace servo drive unit. Occur when

①Cable disconnection . ②Internal temperature relay of

motor is damaged.

Motor overload.

①Examine cable.

Examine motor② .

①Reduce load.

②Reduce start/stop frequency.

③Reduce torque limiting value.

④ Reduce related gain.

⑤Replace drive unit and moto

of greater frequency. Internal failure in motor. ① Replace servo motor. Motor gets stuck by the machinery. Examine machinery part of the

load. Overload. ①Reduce load.

②Replace it with drive unit and

motor of greater frequency. Disconnection of CCW and CW drive stopping input terminal.

Examine the wire connection

and power of the input

terminal.

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DA98D User Manual

Overflow of Position Error Meter

Encoder failure

Encoder Failure

Voltage Shortage in Control Power

Encoder Failure

Occur when switching on control power

Occur during motor operation

The mot① or get stuck by the

machinery.

Abnormal input command pulse.②

Examine the machinery part ①

of the load.

②Examine command pulse.

.③ Examine whether the motor

works after receiving command

pulse Wrong connection of encoder. Examine wire connection. Damaged encoder. Replace motor. Bad encoder cable. Replace cable.

Excessively long encoder cable results in low power voltage of encoder.

Shorten cable.① Supply power with multiple ②

core wires connected in

parallel. Low input control power. Examine control power.

①Internal connectors of driver have bad performance.

Abnormal switch power.② Damaged chip.③

Replace ① drive unit. Examine connector.② Examine switch power.③

Failure in circuit board. Replace servo drive unit.

①Excessively low power voltage. ②Overheating.

Short circuit between motor leads of U, V and W.

Examine ① drive unit.

②Re-electrify.

③Replace drive unit.

Examine wire connection.

Bad ground contact. Correct ground contact.

Excessive

Current

13 Overload

motor operation

Occur when switching on control power

Occur during

Damaged motor insulation. Replace motor.

①Add circuit filter. Be jammed.

②Keep away from jamming

source Short circuit between motor leads of U, V and W.

Examine wire connection.

Bad ground contact. Correct ground contact.

Damaged motor insulation. Replace motor.

Damaged driver. Replace drive unit.

Failure in circuit board. Replace servo drive unit.

①Examine load.

Operation by exceeding rated torque.

②Reduce start/stop frequency.

Reduce torque limiting value.

Replace it with drive unit and

motor of greater frequency

Hold brake cannot be opened. Examine the hold brake.

①Increase gain.

Instable motor with vibration.

②Increase

acceleration/deceleration time.

③reduce load inertia.

Page 50

Braking failure

DA98D User Manual

Occur when switching on control power

Occur during motor operation

①One phase of U, V and W is disconnected.

Examine wire connection. ②Wrong connection of encoder.

Failure in circuit board. Replace servo drive unit.

Disconnection of brake resistance. Re-wiring.

①Damaged brake transistor. ②Internal brake resistance is

Replace servo drive unit. damaged.

①Reduce stop/start frequency.

②Reduce

Insufficient capacity in the brak loop.

acceleration/deceleration time.

③Reduce torque limiting value.

④Reduce load inertia.

⑤Replace drive unit and moto

of greater frequency.

Counting Error of Encoder

EEPROM Error

Z Pulse Losing in Encoder

UVW Signal Error in Encoder

Excessively high main circuit power voltage.

Damaged encoder. Replace motor.

Wrong connection of encoder. Examine wire connection.

Bad ground contact. Correct ground contact.

Damaged chip or circuit board.

Z pulse does not exist; damaged encoder Bad cable Bad cable shielding Bad connection between shielded wire and shielding layer Failure in encoder’s interface circuit

Damaged UVW signal of encoder Damaged Z signal of encoder Bad cable Bad cable shielding Bad connection between shielded wire and shielding layer Failure in encoder’s interface circuit

Examine main circuit.

Replace servo drive unit.

.After repair, first reset driver

model (parameter No.1), then

restore default parameter

value.

Replace encoder

Examine encoder’s interface

circuit

Replace encoder

Examine encoder interface

circuit

Code Violation of

Encoder’s UVW Signal

Damaged UVW signal of encoder Bad cable Bad cable shielding Bad connection between shielded wire and shielding layer Failure in encoder’s interface circuit

Replace encoder

Examine encoder interface

circuit

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DA98D User Manual

Chapter Six Display and Operation

6.1 Keyboard Operation

z The panel of drive unit is composed of six-phase LED nixie tube display and four keys

specific functions of the keys are as follows :

, which are used to display states of drive units and set parameters. The

: Increase serial number and value or forward operation.

: Decrease serial number and value or backward operation.

: Return to the preceding layer of men or cancel the operation.

: Enter the next layer of menu or confirm the input.

Note: Press down or and hold on, the operation will be repeated. The longer the key is kept being

pressed down, the faster the repetition frequency will be. .

z The six-phase LED nixie tube display can show various states and data about the system. If

decimal point of all the nixie tubes or the nixie tube on the fastest right side keeps flashing, it

means alarm.

z Operation is conducted according to multi-layer menu, in which the first layer is the main menu,

including eight operation modes; the second layer is functional menu to the operation mode

under first layer. Fig. 6.1 is a block chart for operations in the main menu, as shown in the

following:

First Layer

Fig. 6.1 Block Chart for Operation Mode Selection

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DA98D User Manual

6.2 Ways of Monitoring

Select “dP-” In the first layer and press down , then you will enter the ways of monitoring, in

which there are 21 display states. Use

to enter the specific display state.

and to select the display mode, then press down

Fig. 6.2 Operation Chart for Ways of Monitoring

Note 1： Position and command pulse are both values multiplied by input electronic gear.

Note 2： Pulse unit is the internal pulse unit of the system, where it means 100,000

pulses/round. The pulse is expressed by value higher by 5 plus value lower by

5. The calculation method is: Pulse=(value higher by 5)×100,000 + value lower

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DA98D User Manual

by 5.

Note 3：Control mode: 0---position control; 2---speed control;3---speed trial operation;

3---JOG operation;4---encoder zero adjusting;5---open-loop operation.

Note 4：If the displayed number reach 6 digits (like 123456), the hint characters will not be shown. Note 5：Position command pulse frequency is the actual pulse frequency before being

multiplied by the input electronic gear, with a minimal unit of 0.1kHz. Forward-direction display stands for positive number and reverse-position display for negative number.

Note 6：The calculation method for motor current I is :

2 3

222

)(

IIII ++=

WVU

Note 7：Absolute position of rotor during one round stands for the position of rotor in

relative to stator during the round. One round is taken as a cycle, ranging from 0 to 9999.

Note 8：Input terminal is shown in Fig. 6.3; the output terminal is shown in Fig. 6.4; and

encoder signal is shown in Fig. 6.5

Fig. 6.3 Input Terminal Display (dot shining means ON and stop shining means OFF)

Fig. 6.4 Output Terminal Display (dot shining means ON and stop shining means OFF)

Fig. 6.5 Encoder Signal Display (dot shining means ON and stop shining means OFF)

Note 1：Operation states are expressed as:

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DA98D User Manual

“cn- oFF” : The main circuit is not discharged and the servo system does

not work;

“cn- CH” : The main circuit is charged but the servo system does not work

( the servo is not on or alarm occurs);

“cn- on” : The main circuit is charged and the servo system is under

operation,

Note 2： Linear velocity only displays 4 digits.

6.3 Parameter Setting

Attention

z Only after No.0 parameter is set as the corresponding value can other parameters be

changed.

z Except No.1 parameter, the parameter will take effect immediately after it is set. Wrong

parameter setting may cause wrong operation of the equipment, which will result in accidents.

Select “PA-” in the first layer, then press down

and

changed by using

or decreased by 1; press down

to select serial number of the parameter and enter to display the value, which can be

and . Click or for one time, the parameter value will be increased

or and hold on, the parameter value will be increased or

to enter the parameter setting mode. Use

decreased continuously. When the parameter is changed, the decimal point on LED nixie tube at the

furthest right side will shine, then press down

to confirm the validity of the parameter changed

and the decimal point will stop shining. The changed parameter value will be immediately reflected

in the control operation. Use

or to go on with parameter changing, after which click down

to return to the parameter selecting mode. If you are not satisfied with the changed parameter

value, do not press down

for confirmation but use to cancel the parameter changing

operation, restore the original value and return to the parameter selecting mode.

Fig. 6.6 Operation Chart for Parameter Setting

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6.4 Parameter Management

Attention

parameter, the value will not be stored and the change will go invalid after power off.

Parameter management mainly involves operations between memory and EEPROM. Select

If the writing-in operation fails to be implemented to the changed

“EE-” in the first layer and press down

an operation mode in the five modes with

example, first select “EE-Set”, then press down

operation is successful, “FInISH” will be shown on the display; if it fails, “Error” will appear on the

display. Re-press down

z EE－SEt Write in parameter, i.e., write the parameter in the memory into the parameter area

of EEPROM. When the user changes the parameter, it is only the parameter in the memory

that is changed, and the parameter value will be restored after the power is switched on the

next time. If you want to permanently change the parameter value, you have to implement

the writing in operation, by which means you can write the parameter in the memory into the

parameter area of EEPROM and you can use the changed parameter after power is

switched on the next time.

to return to the operation mode selecting state.

to enter the parameter management mode. First select

and . Take “parameter writing-in”operation for

and hold on for at least 3 seconds. If the

z EE － rd Read parameter, i.e. the parameter will be red into the memory from the

parameter area of EEPROM. This process will be automatically implemented after the power is switched on. In the beginning, the parameter value in the memory is the same with that in the parameter area of EEPROM. But after the user changes the parameter, the value in the memory will be changed; when the user is not satisfied with the changed parameter or the parameter is adjusted in a disorderly way, the parameter reading operation can be implemented for reading the data in the parameter area of EEPROM back into the memory and restoring the parameter value at the power-on time.

z EE－bA Back up parameter, i.e., write the parameter in the memory into the backup area of

EEPROM. The whole EEPROM is divided into parameter area and backup area. System electrifying, parameter writing in and parameter reading operations all use parameter area of EEPROM, while parameter and recovery backup use the backup area of EEPROM. In the process of parameter setting, if the user is relatively satisfied with a set of parameters but want to make further changes, he or she can first implement the recovery backup operation, by which means the parameters in the memory will be stored in the backup area of EEPROM, then change the parameters. If the effect is not so good, the user can implement the recovery backup operation, in which way the parameters stored in the backup area of EEPROM will be red back into the memory. Then the user can continue with the revision or choose to stop. In addition, after the parameter is set, the user can implement the two operations of parameter writing in and parameter backup to render data in the parameter area and backup area identical with each other; so in case that the parameter is inadvertently changed, the recovery backup operation can be conducted to read the data in the backup area of EEPROM into the memory and then the parameter reading operation can be carried out to write the parameter in the memory into the parameter area of EEPROM.

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DA98D User Manual

z EE－rS Recovery backup, i.e., read data in the recovery area of EEPROM into the memory.

What needs to be noted is that the parameter writing in operation is not implemented in this operation, so it is still the data in the parameter area of EEPROM that is red into the memory. If the user wants to permanently use the parameter in the backup area of EEPROM, he or she can conduct the parameter writing in operation.

z EE－dEF Restore default value, i.e., all the default parameter values (factory values) will

first be red into the memory and then written into the parameter area of EEPROM, thus the default parameter value will be used after the power is switched on the next time. When the user adjusts the parameter in a disorderly way and the system cannot work, he or she can implement this operation to restore all the parameters back to the factory leaving conditions. Since different driver models correspond to different default parameter values, the driver models must be ensured to be correct when restoring the default parameters.

Fig. 6.7 Operation Chart for Parameter Management

Fig. 6.8 Operation Meaning for Parameter Management

Attention

● It is recommended that speed trial operation and JOG operation should be conducted when the motor does not have load for preventing equipment accidents.

● During the trial operation, the driver SON should be valid while CCW and CW drive stopping should be invalid.

6.5 Speed Trial Operation

Select “Sr-” in the first layer and click to enter the trial operation mode. The hint character

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DA98D User Manual

for speed trail operation is “S” and the value unit is r/min. When the system is under speed control

mode, the speed command will be provided by the keys. The speed command can be changed by

or and the motor will run at the given speed. is used to increase the speed in positive

direction and

to decrease the speed in positive direction (increase in the negative direction).

When the speed is a positive value, the motor will rotate in positive direction; when the speed is a

negative value, the motor will rotate in negative direction.

↑

S 800

Fig.6.9 Speed Trial Operation Chart

↓

6.6 JOG Operation

Select “Jr-” in the first layer and click to enter the JOG operation mode, i.e. itching mode.

The hint character for JOG operation is “J” and the value unit is r/min. When the system is under

speed control mode, the speed command will be provides by keys. After entering the JOG operation,

press down

will stop and keep zero speed. Press down

and hold on, then the motor will run at the JOG speed; release the key, the motor

and hold on, the motor will run in the reserve

direction; release the key, the motor will stop and keep zero speed. JOG speed is set through No.21

parameter.

↑

J 120

Fig. 6.10 JOG Operation Chart

↓

6.7 Others

The function of automatic gain adjustment is under development and cannot be provided

temporarily.

The function of encoder zero adjusting is used by the motor manufacturer, so the user shall not use

it.

Open-loop operation mode is used by the motor manufacturer, so the user shall not use it.

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DA98D User Manual

Chapter Seven Operation by Switching on Power

Attention

z The drive unit and motor must have reliable ground contact; PE terminal must be safely

connected with the grounding terminal of equipment.

z It is recommended that the power should be supplied through isolating transformer and

power filter for the purpose of ensuring safety and anti-jamming abilities.

z Only after examining and confirming that the wire is connected correctly can the power be

switched on.

z An emergency stop circuit must be coupled in to ensure that the power can be immediately

cut off in case of failure (see Fig. 7.1).

z After the alarm for failure in drivin unit occurs, confirm that the trouble has been shot and that

the SON signal is invalid before restarting the system.

z Do not touch the drive unit and motor at least 5 minutes after the power is off for fear of

electric shock.

z After some time of operation, the drive unit and motor may have a relatively high

temperature. Be careful not be burned.

7.1 Power Supply Connecting

Refer to Fig. 7.1 for power supply connecting and connect the power supply according to the following order:

1) Connect the power supply with input terminal of main circuit power (the three phases are connected with R, S and T; and the single phase is connected with R and S) through electromagnetic contactor.

2) Power supply r and t in the control circuit shall be connected at the same time with or prior to main circuit power. If only the control power is connected, the servo ready signal (SRDY) will be OFF.

3) After the main circuit power is connected, the servo ready signal (SDRY) will be ON with a time delay of 1.5 seconds, then the servo on signal (SON) can be received. After detecting validity of the servo on signal, the driver output will be valid, and the motor will be activated and under the operation state; when detecting invalidity of the servo on signal or alarm, the base electrode circuit will be closed and the motor will be under free state.

4) When servo on is connected with the power supply, the base electrode circuit will be connected after 1.5 seconds or so.

5) A frequent connection of the cut-off circuit may damage the soft start circuit and consume

energy of the brake circuit. The connection frequency shall be best limited to less than 5 times per hours and 30 times per day. After the trouble for overheating in the drive unit or motor has been shot, the power can only be switched on after 30 minutes of cooling down.

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DA98D User Manual

Fig. 7.1 Power Supply Connecting

Time sequence for Power Supply Connecting and Alarming:

Fig. 7.2 Time sequence for Power Supply Connecting

Fig. 7.3 Time sequence for Alarming

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DA98D User Manual

7.2 Trial Operation

1） Pre-operation Examination

After installment and wiring have been completed, the following items shall be examined before switching on the power:

z Whether the wiring and reliable input voltage are correct in the power supply terminal

TB.

z Whether the power supply wire and motor wire have short circuit or ground contact. z Whether the encoder cable has correction wiring. z Whether the wiring, power supply electrode and voltage are correction in the control

signal terminal.

z Whether the drive unit and motor have been firmly installed. z Whether the motor shaft is connected with load.

2） Trail Operation by Switching on Power

(1) Trail Operation

①Connect CN1 and set the input control signals as: servo on (SON) OFF, CCW drive

stopping (FSTP) ON, CW drive stopping (RSTP) ON.

② Switch on control circuit power (temporarily not switching on the main circuit power) and

the point on the display of the drive unit will shine. If alarm occurs, examine the wiring.

③Set the control mode (parameter No.4) as speed trail operation mode (set as 2).

④Switch on the main circuit power.

Render servo on (SON) ON after confirming that there is no alarm or any other abnormal

④

condition, then the motor will be activated and under the state of zero speed.

⑥Enter the speed trial operation mode through key operation. The hint character for speed

trial operation is “S” and the value unit is r/min. When the system is under the speed control mode, the speed command will be provided by the keys. The speed command

can be changed by

or and the motor will run at the given speed.

(2) JOG (Itching) Operation

① Connect CN1 and set the input control signals as: servo on (SON) OFF, CCW drive

stopping (FSTP) ON, CW drive stopping (RSTP) ON.

② Switch on control circuit power (temporarily not switching on the main circuit power) and

the point on the display of the drive unit will shine. If alarm occurs, examine the wiring.

Set the control mode (parameter No.4) as JOG operation mode (set as 3).

③

Switch on the main circuit power..

④ ⑤Render servo on (SON) ON after confirming that there is no alarm or any other abnormal

condition, then the motor will be activated and under the state of zero speed.

Enter the speed trial operation mode through key operation. The hint character for speed

⑥

trial operation is “J” and the value unit is r/min. When the system is under the speed

control mode, the speed value and direction will be determined by the keys. With

the motor will run at the speed and direction determined by parameter No.21; with the motor will run in the reserve direction at the given speed.

(3) Operation under Position Control Mode

Connect CN1 and set the input control signals as: servo on (SON) OFF, CCW drive

①

stopping (FSTP) ON, CW drive stopping (RSTP) ON.

Switch on control circuit power (temporarily not switching on the main circuit power) and

②

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the point on the display of the drive unit will shine. If alarm occurs, examine the wiring.

③Set the control mode (parameter No.4) as position operation mode (set as 0). According

to the way of inputting signals by controller, the user shall set parameter No.14 and proper electronic gear ratio (No.12 and No.13).

④ Switch on the main circuit power.

Render servo on (SON) ON after confirming that there is no alarm or any other abnormal

⑤

condition, then the motor will be activated and under the state of zero speed.

The output signal of operation position controller is transmitted to the driving foot of

⑥

CN1-6, 18, 7 and 19, and the motor will run according to the command.

(4) Operation under Speed Control Mode

The speed operation mode can be divided into external speed control by analog voltage and internal speed control.

External Speed Control by Analog Voltage

① Connect CN1 and set the input control signals as: servo on (SON) OFF, CCW drive

stopping (FSTP) ON, CW drive stopping (RSTP) ON.

② Switch on control circuit power (temporarily not switching on the main circuit power) and

the point on the display of the drive unit will shine. If alarm occurs, examine the wiring.

③ Set the control mode (parameter No.4) as speed operation mode (set as 1), and set the

PA43 parameter as 1.

④ Switch on the main circuit power.

⑤ Render servo on (SON) ON after confirming that there is no alarm or any other abnormal

condition, then the motor will be activated and under the operation state of external control speed by analog voltage.

Analog speed zero adjusting:

1) Set PA49 parameter as 1;

2) Switch display to “DP-SPD”;

3) Observe current rotation rate: if it rotates in the positive direction, regulate PA44 value toward the higher side; if the it rotates in the reverse direction, regulate the PA44 value towards the lower side until the rotation rate reads “R-0”;

4) Set PA49 parameter value as 0;

5) Switch display to “DP-POS”;

6) Observe current position: if it increases, regulate PA35 value towards the

higher side; if it decreases, regulate PA45 value towards the lower side unit the position value stands still.

⑥ The motor rotation rate can be changed by adjusting external analog voltage and the motor rotation direction can be changed by adjusting direction of the analogy voltage.

Note: Under speed control mode, even when it, as the analog command voltage, gives

0V command, the motor will rotate at a minute speed. Then the zero point of the amplifier shall be adjusted.

Internal Speed Control:

(1) Connect CN1 and set the input control signals as: servo on (SON), speed choice 1 (SC1)

and speed Choice2 (SC2) OFF, CCW drive stopping (FSTP) ON, CW drive stopping (RSTP) ON.

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(2) Switch on control circuit power (temporarily not switching on the main circuit power) and

the point on the display of the drive unit will shine. If alarm occurs, examine the wiring.

(3) Set the control mode (parameter No.4) as speed operation mode (set as 2) and set PA43

parameter as 0. Set parameter No.24～27 according to needs.

(4) Switch on the main circuit power. (5) Render servo on (SON) ON after confirming that there is no alarm or any other abnormal

condition, then the motor will be activated and under the operation state of internal speed

(6) Change the states of input signal SC1 and SC2 to make the motor rotate at the given

speed.

7.3 Adjustment

Attention

z Wrong parameter setting may cause equipment failure or accidents. Confirm validity

of parameter setting before starting the system.

z It is recommended to no-load commissioning should be conducted before

commissioning with load.

1） Adjustment in Basic Gains

(1) Speed Control

① The value speed proportion gain (parameter No.5) should be set as large as possible

under the precondition that no vibration will be caused. Generally, the greater the load inertia is, the larger the value of speed proportion gain shall be set.

② The value of speed integral time constant (parameter No.6) shall be set as low as possible

according to the given conditions. If the value of speed integral time constant is set too low, the response speed will be improved but it is also easy to cause vibration. So under the precondition that no vibration will be caused, the value shall be set as low as possible. For if the value is too high, the speed will have a great change when the load is changed.

(2) Position Control

① Set proper speed proportion gain and speed integral time constant according to the

above-motioned methods.

② Set position feed-forward gain (parameter NO.10) as 0%.

③ Within the range of stability, the value of position proportion gain (parameter No.9) shall be

set as large as possible. If the value of position proportion gain is set too high, the position command will be easily traced and have small lag error, but it is prone to cause vibration when it stops positioning.

④ If an extremely high performance in position tracing is required, the value of position

feed-forward gain can be increased. But if the value is set too high, it may cause over-adjustment.

Note: When the value of position proportion gain is relatively low, the system will be

stable, but the position tracing performance will be impaired and the lag error increased.

2） Chart for Adjustment in Basic Parameters

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Positi on command

Pulse input form

No.12 No.13No.14

Electronic gear

No.47

DA98D User Manual

Feed-

forward

Feedforward

low pass filter

No.9

Position proportional gain

No.43

No.4

No.40 No.41

Acceleration /deceleration time

Speed calculation

No.5

Time constant of speed proportional gain integral

No.64No.6

Current command low pass filter

Four times frequency

No.60

No.61 Time constant of current

proportional gain integral

External analog voltage

Analog speed command gain

Fig. 7.4 Chart for Adjustment in Basic Parameters

3) Position Resolution and Electronic Gear Position

Position resolution (one pulse itinerary l△ ) is determined by itinerary per round of servo

motor S and feedback pulse per round of encoder Pt△ , as expressed in the following calculation formula:

l=△

In which,

l△ : one pulse itinerary (mm);

S:△ one pulse itinerary (mm/round);

Pt: feedback pulse per round of encoder (pulses/round). Since there is a four-time frequency circuit in the system, Pt=4×C, in which C is the line number per round of encoder. In this system, C=2500 lines/round, so Pt=10000 pulses/round.

Command pulse can be converted into position control pulse after being multiplied by

electronic gear ratio G, so one command pulse itinerary l△ ﹡is expressed as:

l*=△

×G

numeratordivision frequency pulse Command

In which, G=

rdenominatodivision frequency pulse Command

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Chapter Eight Product Specifications

● Servo drive unit must be selected to match the servo motor. This manual describes matched specifications on GKS SJT series and ST series of products.

● Servo motor description. The user shall make a clear indication in the order if he or she needs to select servo motor of other manufacturers.

Attention

8.1 Driver Specifications

Table 8.1 Servo Driver Specifications

Output Power(kW) 0.4～0.8 1.0～1.5 1.7～2.3

Rated Torque of

Motor (Nm)

Input Voltage Three Phases or Single Phase

AC220V

Operation

Environment

Temperature Operaton:0℃～55 ℃ Storage:-20℃～80℃

Humidity Less than 90%(no dew condensation)

Vibration Less than 0.5G(4.9m/S2),10～60 Hz(non-continuous operation)

-15%～+10% 50 Hz /60Hz

2～4 4～10 6～15

Three-phase AC220V

-15%～+10% 50 Hz /60Hz

Control Mode ①Position Control ②Speed Control ③Speed Trial Operation JOG④ Operation

⑤Open-loop Operation

Regenerative Brake Built in

Features

Speed Frequency Response:200Hz or more

Control

Speed Wave Frequency: ＜ ±0.03(load 0～ 100%): ＜±0.02(power supply-15% ～ +10%)(the value shall correspond to rated velocity)

Speed Ratio:1:5000

Pulse Frequency:≤500kHz

①Servo on; ②Alarm Clearance ; CCW③ Drive Stopping; CW④ Drive

Control Input

Control Output

Position Control

Speed Control

Stopping;⑤Error Meter Clearance/Speed Choice1;⑥Command Pulse Inhibiting/Speed Choice2; CCW⑦ Torque Limiting; CW⑧ Torque Limiting. ①Servo Ready for Output;②Servo Alarm Output;③Positioning Completing Output/Speed Completing Output.④ Hold Output

Input Forms

Electronic Gear Ratio

Feedback Pulse

1) Analog Speed Control Mode: +-10V Voltage; Input Impedance 20K

2) Electronic Gear Ratio: 1-1/255

①Pulse+Symbol; CCW② Pulse/CW Pulse;

1～32767/1～32767

10000 Pulses/Round

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(

)

Four Types of Internal Speeds

Acceleration/Decele ration Function

Monitoring

Function

Parameter setting for acceleration/deceleration time 1 ms ～ 10000ms(0r/min←→1000r/min)

Rotation rate, current position, command pulse accumulation, position error, motor torque, motor current, linear velocity, absolute position of rotor, command pulse frequency, operation state, input/output terminal signal and etc.

Protection Function Excessive speed, voltage shortage in main power supply, over-current,

overload, abnormal brake, abnormal encoder, abnormal control power, position excess and etc.

Display and

6-phase LED nixie tube, 4 keys

Operation

Applicable load

Less than 5 times of motor inertia

inertia

Dimension 240 mm×177.5 mm×90mm(see figuration drawing)

8.2 Servo Motor Specifications

1） Product Introduction

GSK SJT series of three-phase AC permanent-magnet synchronous servo motors has the following technical features:

◆ Adopt new rare-earth materials, with great output power.

◆ Good low-speed performance, with speed ratio>1:10000.

◆ High dielectric strength and insulation resistance for safe operation.

◆ Powerful overlaod capacity: torque can reach 8 times of rated torque in an instant.

2） Terminal Explanation

（1） SJT Series of Motor Winding

U,V,W,PE terminal.The three winding phases of U, V and W of motor and the rack earth are led out through a 4-core connector. The corresponding relationships are shown in Table 8.2. U, V, W and rack earth are respectively connected with terminal U, V, W and PE of the main return circuit.

Lead Wire

W V

The lead wires of photoelectric encoder are led out through a 15-core connector. The corresponding relationships are shown in Table 8.2. The lead wires shall be connected with plugs of the driver feedback signals CN2 according to driver requirements.

Table 8.2 Motor Wiring

Motor

Socket

No.

U V W

2 3 4 1

Rack

(Earth)

Diagram for Plugs

wire welding area

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Table 8.3 Encoder Wiring

Lead Wires of

Encoder

Socket No. 1 2 3 4 7 5 8 6

Lead Wires of

Encoder

Plug No. 9 10 13 11 14 12 15

Rack (Earth) V

Z U

GND A

(2)ST Series of Motor Winding

Schematic diagram for motor winding is shown as follows:

A, B and C are lead-out terminals of winding.

Lead-out way: 4-core socket.

Table 8.4 Motor Wiring

Socket No. 2 3 4

Motor

Winding

Remark

Lead-out way of photoelectric encoder:15-core socket.

Table 8.5 Encoder Wiring

A B C

One foot has ground

contact (rack)

Marks 2 3 4 7 5 8 6 9 10 13 11 14 12 15

Lead-out foot

Remark GND is one foot (rack) of the encoder power Vcc that has ground contact

(3) Specifications

Models

110SJT-M020E 0.6 4 2 3000 3.0 3.4×10-4 52 220(300)

110SJT-M040D 1.0 4 4 2500 4.5 6.8×10-4 45 220(300)

110SJT-M060D 1.5 4 6 2500 7.0 9.5×10-4 42 220(300)

130SJT-M040D 1.0 4 4 2500 4.0 1.19×10-3 80 220(300)

130SJT-M050D 1.3

130SJT-M060D 1.5 4 6 2500 6.0 1.95×10-3 82 220(300)

130SJT-M075D 1.88 4 7.5 2500 7.5 1.95×10-3 66 220(300)

130SJT-M100B 1.5 4 10 1500 6.0 2.42×10-3 38 220(300)

130SJT-M100D 2.5 4 10 2500 10.0 2.42×10-3 63 220(300)

130SJT-M150B 2.3 4 15 1500 8.5 3.1×10-3 33 220(300)

GND A

Table 8.8 Specifications on SJT Series of Some Motors

Power(kw)

Paris o Electrodes

Rated Torque(N.m)

5 2500 5.0 1.19×10-3 64 220(300)

Rated Rotation

Rated Current

Rotor Inertia

cceleration

Time

Operating Voltage

130SJT-M150D 3.9 4 15 2500 14.5 3.6×10-3 63 220(300)

Note: The user shall make a special indication if he or she wants to order motor with

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electricity-losing brake.

Table 8.9 Specifications on ST Series of Some Motors

Models

Power

(kw)

Zero

Speed

Rated

Rotation

Rated

Current

Rotor

Inertia

110ST-M02030H 0.6 2 3000 4.0 0.33×10

110ST-M04030H 1.2 4 3000 7.5(5.0) 0.65×10

110ST-M05030H 1.5 5 3000 9.5(6.0) 0.82×10

110ST-M06020H 1.2 6 2000 8.0(6.0) 1.00×10

110ST-M06030H 1.8 6 3000 11.0(8.0) 1.00×10

130ST-M04025H 1.0 4 2500 6.5(4.0) 0.85×10

130ST-M05025H 1.3 5 2500 6.5(5.0) 1.06×10

130ST-M06025H 1.5 6 2500 8.0(6.0) 1.26×10

130ST-M07720H 1.6 7.7 2000 9.0(6.0) 1.58×10

130ST-M10015H 1.5 10 1500 9.0(6.0) 2.14×10

130ST-M10025H 2.6 10 2500 14.5(10.0) 2.14×10

130ST-M15015H 2.3 15 1500 13.5(9.5) 3.24×10

Machinery

-3

Time

Operating

Voltage

Weight

(kg)

3.64 220(300) 4.2

2.32 220(300) 5.2

2.03 220(300) 5.8

1.82 220(300) 6.4

1.82 220(300)

6.4

3.75 220(300) 7.4

3.07 220(300) 7.9

2.83 220(300) 8.6

2.44 220(300) 9.5

2.11 220(300) 11.1

1.88 220(300) 14.3

Note 1: The value within the bracket in the column of rated current is the rated current

under high voltage

Note 2: The user shall make a special indication if he or she wants to order motor with

electricity-losing brake

3) Figuration Dimension (1) Figuration and installment dimension for SJT series of 110-stand model AC servo

motors

Specifications D(mm) N(mm) LB(mm) L(mm)

110SJT—M020E 19

-0.013

-0.035

156(207) 211(262)

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DA98D User Manual

110SJT—M040D 19

110SJT—M060D 19

-0.013

186(237) 241(292)

-0.035

212(263) 267(318)

-0.035

Note: The LB and L value in the bracket is the length of motor with electricity-losing brake of the

corresponding specifications.

(2) Figuration and installment dimension for SJT series of 130-stand model AC servo

motors

Specifications D(mm) N(mm) LB(mm) L(mm)

130SJT—M040D 22 130SJT—M050D 22 130SJT—M060D 22 130SJT—M075D 22 130SJT—M100B 22 130SJT—M100D 22 130SJT—M150B 22 130SJT—M150D 22

Note: The LB and L value in the bracket is the length of motor with electricity-losing brake of

the corresponding specifications.

(3) Figuration Drawing for DST series of 110-stand model AC servo motors

-0.013

110

-0.013

110

-0.013

110

-0.013

110

-0.013

110

-0.013

110

-0.013

110

-0.013

110

-0.035

168(227) 225(284)

-0.035

190(249) 247(306)

-0.035

190(249) 247(306)

-0.035

208(267) 265(324)

-0.035

208(267) 265(324)

-0.035

238(297) 295(354)

-0.035

248(307) 305(364)

-0.035

168(227) 225(284)

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Zero-speed Torque (Nm) 2 4 5 6

A(mm) 106 132 148 164 B(mm) 158(205) 184(231) 200(247) 216(263) C(mm) 76 102 118 134

Note: The B value in the bracket is the length of motor with electricity-losing brake.

(4) Figuration Drawing for DST series of 130-stand model AC servo motors

Zero-speed

Torque (Nm)

A(mm) 110 119 128 142 166 214

B(mm) 162(209) 171(218) 180(227) 194(241) 218(265) 266(313)

C(mm) 80 89 98 112 136 184

Note: The B value in the bracket is the length of motor with the electricity-losing brake.

4 5 6 7.7 10 15

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8.3 Isolating Transformer

Attention

z It is recommended that the power of drive unit is supplied by isolating transformer for

reducing the possibility of electric shock and jamming by power supply and electromagnetic

field.

z Drive units of 0.8kW and below can adopt single-phase power supply while drive units of

more than 0.8kW can adopt three-phase power supply.

We provide the following several models of transformers for the user to select. The user can

make a choice by referring to the power and actual load of servo motor.

Table 8.5 Specifications on Some Isolating Transformers

Models Capacity (kVA)

Phase

Number

BS—120 1.2

BS—200 2.0

Three

BS—300 3.0

BD—80 0.8

Single

BD—120 1.2

Input Voltage (V)

380 220

Output Voltage

(V)

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Installation Dimension Drawing for BS—120 Model

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Installment Dimension Drawing for BS—200 Model

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Installment Dimension Drawing for BS—300 Model

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Installment Dimension Drawing for BD—80 Model

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Installment Dimension Drawing for BD—120 Model

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Chapter Nine Order Instructions

9.1 Capacity Selecting

The determination of capacity of the servo system must comprehensively consider factors like

load inertia, load torque, required positioning precision and maximal speed. The following

steps are recommended for the considerations:

1） Calculating Load Inertia and Torque

By referring to related data, make a calculation on load inertia, load torque,

acceleration/deceleration torque and effective torque, which will serve as the basis for

choice at the next step.

2） Initial Determination of Machinery Gear Ratio

According to the required maximal speed and rotation rate of motor, make a calculation

on the maximal machinery deceleration ration. This ratio and the minimal gyration unit of

motor will be used to calculate whether the requirement for minimal position unit is

satisfied. If a relatively high position precision is required, increase the machinery

deceleration ratio (the actual maximal speed is decreased) or choose motor with higher

rotation rate.

3） Calculating Inertia and Torque

The load inertia and torque can be converted to the motor shaft with machinery

deceleration ratio. The converted inertial shall be no more than 5 times of the inertia of

the motor rotor and the converted load torque and effective torque shall be not higher

than the rated torque of motor. If these requirements cannot be satisfied, increase

machinery ratio (the actual maximal speed is decreased) or choose motor with greater

capacity.

9.2 Electronic Gear Ratio

Refer to Chapter Four (Table 4.2 Functions of Parameters), Chapter Six (Parameter Setting)

and Chapter Seven (7.3 Adjustment) for the meaning and adjustment of electronic gear ratio

Under position control mode, the actual speed of load is:

command pulse speed×G×machinery deceleration ratio.

Under position control model, the actual minimal displacement of load is:

minimal command pulse itinerary×G×machinery deceleration ratio.

Note: When the electronic gear ratio G is not 1, the dividing operation of G may have a

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remainder, which means that position errors exist. The maximal error is the minimal

rotation value (minimal resolution) of the motor.

9.3 Stop Features

Under position control mode, there will be a difference between the command pulse and

feedback pulse when using pulse train to control the servo motor. This difference will be

accumulated in the position error meter and form the following relationships with the

command pulse frequency, electronic gear ratio and position proportion gain:

ε=

in which,

ε: Lag Pulse (Puls);

f: Command Pulse Frequency (Hz);

Kp: Position Proportion Gain (1/S);

Gf ×

G: Electronic Gear Ratio.

Note: the above relationship is reached under the condition that position

feed-forward gain is 0%. If the position feed-forward gain is >0%, the lag pulse

will be less than that in the above calculation formula.

9.4 Calculation Method for Selecting Models of Servo System and Position

Controller

1) Command displacement and actual displacement：

in which,

S: actual displacement mm;

I: command displacement mm;

δ: minimal unit of CNC mm;

CR: command frequency

multiplication coefficient;

CD: command frequency division coefficient

CRI CD

⋅⋅⋅⋅⋅=

DR: servo frequency multiplication coefficient;

DD: servo frequency division coefficient;

ST: grade division value per round of motor;

ZD: gear number of side gear of motor;

ZM: gear number of side gear of lead screw;

L: pitch of lead screw mm

Generally, S=I, which means command value equals actual value.

2) Maximal Command Speed of CNC:

CRF

≤⋅

max

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DA98D User Manual

In which, F: command speed mm/min;

3) Maximal Speed of Servo System:

In which, V

Actual maximal speed of machine tools is restricted by maximal speed of CNC and the servo

system.

in which, α: minimal displacement of machine tools mm;

N : natural number;

: maximal output frequency of CNC Hz(GSK980 为 128000).

max

nV ××=

max

: maximal velocity of work bench permitted by the servo system mm/min;

max

: maximal rotation rate permitted by the servo motor r/min;

max

⎡ ⎢

⎣

⎤

⎛

NINTINT ⋅⋅⋅

⋅=

⎜

⎝

⎞

⋅

⎟ ⎠

⎥ ⎦

min

STDD

INT( ): integral number;

INT [ ]

: minimal integral num

min

Page 79

Add: No.52, 1

. Street, Luochong North Road, Luochongwei, Guangzhou, 510165, China

Website: http://www.gsk.com.cn E-mail: gsk@gsk.com.cn Tel: 86-20-81796410/81797922 Fax: 86-20-81993683

All specification and designs are subject to change without notice. Aug. 2007/Edition 1

Aug. 2007/Printing 1

gsk GSK DA98D User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual