In this user manual we have tried to describe the matters
concerning the operation of this CNC system to the greatest extent.
However, it is impossible to give particular descriptions for all
unnecessary or unallowable operations due to length limitation and
products application conditions；Therefore, the items not presented
herein should be regarded as “impossible” or “unallowable”.
Copyright is reserved to GSK CNC Equipment Co., Ltd. It
is illegal for any organization or individual to publish or reprint this
manual. GSK CNC Equipment Co., Ltd. reserves the right to ascertain
their legal liability.
GSK988T Turning CNC System User Manua(Volume Ⅱ)
Preface
Your Excellency,
We are honored by your purchase of this GSK 988 Turning CNC
System made by GSK CNC Equipment Co., Ltd.
This book is User Manual Volume II –“Installation and Debugging”.
To ensure safe and effective running, please read this manual carefully
before installation and operation.
Warning
Accident may occur by improper connection and operation！This
system can only be operated by authorized and qualified personnel.
Special caution:
The power supply fixed on/in the cabinet is exclusively used for the
CNC system made by GSK.
It can't be applied to other purposes, or else it may cause serious
danger!
II
Cautions
■ Delivery and storage
● Packing box over 6 layers in pile is unallowed.
● Never climb the packing box, stand on it or place heavy objects on it.
● Do not move or drag the products by the cables connected to it.
● Forbid collision or scratch to the panel and display screen.
● Avoid dampness, insolation and drenching.
■
Open-package inspection
● Confirm that the products are the required ones.
● Check whether the products are damaged in transit.
● Confirm that the parts in packing box are in accordance with the packing list.
Precautions
● Contact us in time if any inconsistence, shortage or damage is found.
■ Connection
● Only qualified personnel can connect the system or check the connection.
● The system must be earthed, and the earth resistance must be less than 0.1Ω.
The earth wire cannot be replaced by zero wire.
● The connection must be correct and firm to avoid any fault or unexpected
consequence.
● Connect with surge diode in the specified direction to avoid damage to the
system.
● Switch off power supply before plugging out or opening electric cabinet.
■ Troubleshooting
● Switch off power supply before troubleshooting or changing components.
● Check the fault when short circuit or overload occurs. Restart can only be done
after troubleshooting.
● Frequent switching on/off of the power is forbidden, and the interval time should
be at least 1 min.
III
GSK988T Turning CNC System User Manual (Volume Ⅱ)
ANNOUNCEMENT!
z This manual describes various possibilities as much as possible. However,
operations allowable or unallowable cannot be explained one by one due to
so many possibilities that may involve with, so the contents that are not
specially stated in this manual shall be regarded as unallowable.
WARNING！
z Please read this manual and a manual from machine tool builder carefully
before installation, programming and operation, and strictly observe the
requirements. Otherwise, products and machine may be damaged,
workpiece be scrapped or the user be injured.
CAUTION！
z Functions, technical indexes (such as precision and speed) described in
this user manual are only for this system. Actual function configuration and
technical performance of a machine tool with this CNC system are
determined by machine tool builder’s design, so functions and technical
indexes are subject to the user manual from machine tool builder.
z Though this system adopts standard operation panel, the functions of the
keys on the panel are defined by PLC program (ladder diagram). It should be
noted that the keys functions described herein are for the standard PLC
program (ladder diagram).
z For functions and effects of keys on control panel , please refer to the user
manual from machine tool builder.
This manual is subject to change without further notice.
IV
Precautions
Safety Responsibility
Manufacturer’s Responsibility
——Be responsible for the danger which should be eliminated and/or controlled on
design and configuration of the provided CNC systems and accessories.
——Be responsible for the safety of the provided CNC systems and accessories.
——Be responsible for the provided information and advice for the users.
User’s Responsibility
——Be trained with the safety operation of CNC system and familiar with the safety
operation procedures.
——Be responsible for the dangers caused by adding, changing or altering to the
original CNC systems and the accessories.
——Be responsible for the failure to observe the provisions for operation, adjustment,
maintenance, installation and storage in the manual.
This manual is reserved by end user.
We are full of heartfelt gratitude to you for supporting us in the
use of GSK’s products.
V
GSK988T Turning CNC System User Manual (Volume Ⅱ)
VI
Contents
Contents
CHAPTER I INSTALLATION LAYOUT ..............................................................................................1
1.1 Overall Dimension of GSK988T and Accessories...................................................................1
1.1.1 Overall Dimension of the GSK988T Mainframe............................................................1
1.1.2 Overall Dimension of GSK988T-H Mainframe..............................................................2
1.1.3 Overall Dimension of GSK988T Operation Panel MPU02A .........................................3
1.1.4 Overall Dimension of GSK988T Operation Panel MPU02B .........................................4
1.1.5 Overall Dimension of GSK988T- H Operation Panel MPU03A.....................................5
1.1.6 Overall Dimension of GSK988T-H Operation Panel MPU03B......................................6
1.1.7 Overall Dimension of I/O Deconcentrator MCT01 ........................................................7
1.1.8 Overall Dimension of I/O Deconcentrator MCT02 ........................................................7
1.2 Structure of GSK988T Control System ...................................................................................8
1.2.1 Front /Rear Panel Illustrations......................................................................................8
1.2.2 General Connection Diagram .....................................................................................10
1.3 GSK988T Installation............................................................................................................11
1.3.1 Conditions of Electric Cabinet Installation ..................................................................11
1.3.2 System Grounding Requirements ..............................................................................11
1.3.3 Interference Prevention Methods ...............................................................................11
CHAPTER II INTERFACE SIGNAL DEFINITION AND CONNECTION.............................................13
2.1 Connection with Drive Unit ...................................................................................................13
2.1.1 Definition of the Drive Interface ..................................................................................13
2.1.2 Signal Instruction........................................................................................................13
2.1.3 Connection with the Drive Unit Interface ....................................................................16
2.2 Connection with the Spindle .................................................................................................18
th
2.2.1 The 5
Axis · Spindle Interface Definition ...................................................................18
2.2.2 Signal Instruction........................................................................................................19
2.2.3 Connection with the Servo Spindle Drive Unit ............................................................20
2.2.4 Connection with the Spindle Inverter Interface...........................................................21
2.3 Connection with the Spindle Encoder...................................................................................22
2.3.1 Interface Definition of the Spindle Encoder ................................................................22
2.3.2 Signal Instruction........................................................................................................22
2.3.3 Connection with the Spindle Encoder Interface..........................................................22
nd
2.4 Connection with the 2
2.4.1 Definition of the 2
Spindle............................................................................................23
nd
Spindle (Analog Spindle) Interface ..............................................23
2.4.2 Connection with the 2nd Spindle Inverter Interface .....................................................23
2.5 Connection with MPG...........................................................................................................24
2.5.1 Definition of MPG Interface ........................................................................................24
2.5.2 Signal Instruction........................................................................................................24
2.5.3 Connection with MPG Interface..................................................................................24
2.6 Connection with the Machine Panel .....................................................................................25
2.6.1 Communication Interface Definition............................................................................25
2.7 GSK988T General I/O Interface Definition ...........................................................................25
2.7.1 Definition of Input & Output Addresses.......................................................................25
2.7.2 Input Signal ................................................................................................................26
VII
GSK988T Turning CNC System User Manual (Volume Ⅱ)
2.7.3 Output Signal .............................................................................................................27
2.8 Connection with the Power Supply....................................................................................... 28
2.8.1 Definition of Power Supply Interface ..........................................................................29
2.8.2 Connection between GSK988T and GSK-PB2 Power Supply Box ............................ 29
2.9 Connection with the External Equipment..............................................................................29
2.9.1 RS-232 Interface Definition ........................................................................................30
2.9.2 Definition of GSKLINK Bus Interface..........................................................................30
2.9.2 Network Interface Definition .......................................................................................31
2.9.3 USB Interface Definition.............................................................................................31
CHAPTER III MACHINE TOOL DEBUGGING-OPERATION ............................................................32
3.1 Parameter Setting ................................................................................................................32
3.1.1 System Parameters....................................................................................................32
3.1.2 Servo Parameters ......................................................................................................34
3.2 Instruction of PC Communication Software GSKComm-M...................................................37
3.2.1 Preparation for GSKComm-M .................................................................................... 37
3.2.2 File Download (PC→CNC).........................................................................................38
3.2.3 Upload File (CNC→PC) .............................................................................................39
3.3 Usage of U Disk ...................................................................................................................40
3.3.1 File Management Screen ...........................................................................................40
3.3.2 Program Screen .........................................................................................................41
3.3.3 PLC Screen................................................................................................................42
3.4 PLC Operation .....................................................................................................................43
3.4.1 PLC Execution and Stop ............................................................................................44
3.4.2 PLC Monitoring and Diagnosis...................................................................................45
3.4.3 PLC Data Viewing and Setting ...................................................................................48
3.4.4 PLC On-line Modification............................................................................................50
3.4.5 PLC Program Transmission ....................................................................................... 58
3.5 CNC Diagnosis.....................................................................................................................58
3.6 Servo Diagnosis ...................................................................................................................60
CHAPTER IV MACHINE DEBUGGING-FUNCTIONS.......................................................................62
4.1 Emergency Stop and Hardware Limit...................................................................................62
4.2 Basic Axis Parameters Setting .............................................................................................63
4.2.1 Axis Property ..............................................................................................................63
4.2.2 GSKLink Communication Setting of Axis and Servo ..................................................64
4.3 Servo Related Setting ..........................................................................................................65
4.3.1 CNC Servo Parameter Setting ...................................................................................65
4.4 Gear Ratio Adjustment .........................................................................................................66
4.4.1 Gear Ratio Calculation ...............................................................................................67
4.4.2 Gear Ratio Setting......................................................................................................67
4.5 Acceleration/Deceleration Characteristic Adjustment ...........................................................68
4.6 Reference Point and Software Limit .....................................................................................69
4.6.1 Reference Point of Absolute Encoder Setting ............................................................70
4.6.2 Reference Point Setting with Dog ..............................................................................71
4.6.3 Reference Point Setting without Dog .........................................................................72
4.6.4 Setting of Stored Stroke Check ..................................................................................73
VIII
Contents
4.7 Pitch Error Compensation ....................................................................................................75
4.8 Backlash Compensation.......................................................................................................78
4.9 Spindle Function Adjustment ................................................................................................80
4.9.1 Spindle Encoder .........................................................................................................80
4.9.2 Spindle Speed Analog Voltage Control .......................................................................81
4.9.3 Double-Spindle Control ..............................................................................................83
CHAPTER V PARAMETER INSTRUCTION ...................................................................................84
5.1 Parameters of System Setting..............................................................................................85
5.2 Parameters of the Interfaces of Input and Output.................................................................85
5.3 Parameters of Axis Control/Setting Unit ...............................................................................85
5.4 Parameters of the Coordinate System..................................................................................89
5.5 Parameters of the Stroke Detection......................................................................................91
5.6 Parameters of the Feedrate..................................................................................................94
5.7 Parameters of Control of Acceleration/Deceleration.............................................................98
5.8 Parameter of Servo and Backlash Compensation..............................................................100
5.9 Parameter of Input/Output ..................................................................................................104
5.10 Parameter of Display and Editing .....................................................................................106
5.11 Parameter of Programming ..............................................................................................109
5.12 Parameters of the Screw Pitch Error Compensation ........................................................ 111
5.13 Parameters of the Spindle Control....................................................................................113
5.14 Parameters of the Tool Compensation .............................................................................117
5.15 Parameters of the Canned Cycle .....................................................................................120
5.15.1 Parameters of the Drilling Canned Cycle ...............................................................121
5.15.2 Parameters of the Thread Cutting Cycle ................................................................121
5.15.3 Parameters of the Combined Canned Cycle ..........................................................121
5.16 Parameters of the Rigid Tapping ......................................................................................123
5.17 Parameters of the Polar Coordinates Interpolation...........................................................125
5.18 Parameters of the User Macro Program...........................................................................126
5.19 Parameters of the Skip Function ......................................................................................127
5.20 Parameters of the Graphic Display...................................................................................128
5.21 Parameter of Run Hour and Parts Count Display.............................................................128
5.22 Parameter of MPG Feed ..................................................................................................129
5.23 Parameter of PLC Axis Control.........................................................................................131
5.24 Parameters of the Basic Function.....................................................................................134
5.25 Parameters of GSKLink Communication Function ...........................................................135
CHAPTER VI STANDARD PLC FUNCTION CONFIGURATION.....................................................136
6.1 Standard Panel on the Machine Tool ..................................................................................136
6.2 Addresses X, Y Definition ...................................................................................................137
6.2.1 General I/O Interface on Machine Tool .....................................................................137
6.2.2 MPG Interface ..........................................................................................................141
6.2.3 Spindle Interface .....................................................................................................142
6.2.4 Standard Operation Panel........................................................................................143
6.3 Standard PLC Functions.....................................................................................................147
6.3.1 Cycle Start and Feed Hold........................................................................................147
6.3.2 Feed/Spindle Hold....................................................................................................148
IX
GSK988T Turning CNC System User Manual (Volume Ⅱ)
6.3.3 Program Lock...........................................................................................................149
6.3.4 Feedrate Override ....................................................................................................149
6.3.5 Spindle Override.......................................................................................................149
6.3.6 Spindle CCW/CW Control ........................................................................................ 150
6.3.7 Spindle Jog...............................................................................................................151
6.3.8 Spindle 8-Point Pre-Orientation................................................................................152
6.3.9 Spindle Speed Binary Control...................................................................................154
6.3.10 Spindle Gear Control.............................................................................................. 154
6.3.11 Cooling Control....................................................................................................... 155
6.3.12 Lubricating Control .................................................................................................156
6.3.13 Chuck Control ........................................................................................................157
6.3.14 Tailstock Control .....................................................................................................158
6.3.15 Low Pressure Detection .........................................................................................159
6.3.16 Overtravel Signal of Axes....................................................................................... 160
6.3.17 Tool Change Control...............................................................................................160
6.3.18 Emergency Stop.....................................................................................................165
6.3.19 Tri-Colored Lamp ...................................................................................................166
6.4 Standard PLC Parameter Instruction..................................................................................166
6.4.1 Parameter K ............................................................................................................. 166
6.4.2 Parameter DT...........................................................................................................167
6.4.3 Parameter DC .......................................................................................................... 168
6.4.4 Parameter D.............................................................................................................169
6.5 Signals G, F Used in Standard PLC....................................................................................169
6.5.1 Signal G ...................................................................................................................169
6.5.2 Signal F....................................................................................................................171
APPENDIX A ALARM LIST ..........................................................................................................173
A.1 Program Alarms (P/S Alarms)............................................................................................173
A.2 Parameter Alarms ..............................................................................................................183
A.3 Pulse Encoder Alarms........................................................................................................184
A.4 Servo Alarms .....................................................................................................................184
A.5 Overtravel Alarms ..............................................................................................................185
A.6 Spindle Alarms...................................................................................................................185
A.7 System Alarms...................................................................................................................185
A.8 PLC Alarms........................................................................................................................186
A.9 GSKLink Communication Prompts.....................................................................................188
A.10 Servo Inner Alarms ..........................................................................................................189
APPENDIX B MOTOR TYPE CODE LIST....................................................................................193
B.1 DAT2000C Series Motor Model Code List .........................................................................193
B.2 DAP03C,DAY3025C Model Code List ...............................................................................194
APPENDIX C COMMON ALARM REMEDY ................................................................................. 195
C.1 CNC Common Alarm Remedy........................................................................................... 195
C.2 DAT Feed Servo Alarm Remedy........................................................................................ 195
C.3 Spindle Servo Alarm Remedy ............................................................................................201
X
Chapter I Installation Layout
CHAPTER I INSTALLATION LAYOUT
1.1 Overall Dimension of GSK988T and Accessories
1.1.1 Overall Dimension of the GSK988T Mainframe
1
GSK988T Turning CNC System User Manual (Volume Ⅱ)
1.1.2 Overall Dimension of GSK988T-H Mainframe
Note: The panel of GSK988T-H is horizontal.
2
Chapter I Installation Layout
1.1.3 Overall Dimension of GSK988T Operation Panel MPU02A
0
9
0
1
0
2
0
3
0
0
8
0
7
0
6
0
4
50
30
3
GSK988T Turning CNC System User Manual (Volume Ⅱ)
1.1.4 Overall Dimension of GSK988T Operation Panel MPU02B
30
4
Chapter I Installation Layout
1.1.5 Overall Dimension of GSK988T- H Operation Panel MPU03A
30
5
GSK988T Turning CNC System User Manual (Volume Ⅱ)
1.1.6 Overall Dimension of GSK988T-H Operation Panel MPU03B
30
6
Chapter I Installation Layout
1.1.7 Overall Dimension of I/O Deconcentrator MCT01
1.1.8 Overall Dimension of I/O Deconcentrator MCT02
7
GSK988T Turning CNC System User Manual (Volume Ⅱ)
1.2 Structure of GSK988T Control System
1.2.1 Front /Rear Panel Illustrations
Connect to spindle encoder
ENCODER ENCODER 2
CN21
ST
1 AXIS
CN11
COM WITH
MACHINE PANEL
+24V
0V
-12V
0V
+12V
0V
+5V
+5V
+5V
CN1
MPG
GSKLINK(A)
CN53
CN31CN22
ND RD TH
CN12
3 AXIS 2 AXIS
4 AXIS
CN13 CN14
INPUT OUTPUT
CN54
CN61 CN62
GSKLINK(B)
CN52
ND
2 SPINDLE
CN41
TH
5 AXIS SPINDLE
CN15
Connect to spindle encoder 2
(It can be used as the 2nd MGP)
Used for communication between
CNC and remote I/O unit
Used for communication between
CNC and servo drive uni
Connect to MPG
Connect to the 2nd spindle
Feed axis interface (connect to
the 1～4 axes servo drive unit)
Output interface from CNC
to machine tool
Connect to spindle servo
drive unit/invertor/the 5th
axis servo drive unit
Input interface from
machine tool to CNC
Connect to machine tool panel
8
Power supply interface
Fig. 1-2-1 The layout of GSK988T mainframe rear cover interfaces
Note: These interfaces are compatible with GSK988T-H system. See Fig.1-2-1
Chapter I Installation Layout
ENCODER ENCODER 2
CN21
CN22
AXIS 2AXIS 1
MPG
CN31
AXIS 3
GSKLINK(A)
CN53
AXIS 4
CN14CN13CN11 CN12
GSKLINK(B)
CN52
SPINDLE 2
CN41
MACHINE PANEL
CN54
AXIS 5 SPINDLE
CN15
INPUT OUTPUT
+24V
0V
-12V
0V
+12V
0V
+5V
+5V
+5V
CN61CN62
CN1
Fig. 1-2-2 The layout of GSK988T-H mainframe rear cover interfaces
Fig. 1-2-3 The layout of GSK988T front panel interfaces
9
GSK988T Turning CNC System User Manual (Volume Ⅱ)
1.2.2 General Connection Diagram
GSK 988T
10
Fig. 1-2-4 GSK988T connection diagram
Chapter I Installation Layout
1.3 GSK988T Installation
1.3.1 Conditions of Electric Cabinet Installation
¾ Prevent the entry of dust, coolant and organic solution.
¾ The distance between CNC rear cover and the cabinet should not be less than 20cm.
Ensure that the temperature difference (outside and inside the cabinet) will be less than
10℃ in case of temperature rising in the cabinet.
¾ A radiator fan can be installed inside the cabinet to ensure ventilation.
¾ The display panel should be installed in proper place to avoid the coolant ejection.
¾ The interference of external electrical equipments to the CNC should be taken into
consideration and be reduced to the greatest extent.
1.3.2 System Grounding Requirements
The following grounding systems are for CNC machine tool:
¾ Signal ground
It provides the reference voltage of telecommunication system (0V).
¾ Frame ground
It is used for the sake of safety. The shell of frame unit, panel and the interface cables
shield should be connected together. It can also suppress the internal and external
noise.
¾ System ground
It is used to connect the devices and the frame ground with the ground.
Note 1: The connection between signal and frame ground in the CNC control unit is only made at one
place.
Note 2: Use the AC power line with grounding wire to ensure grounding during power supply.
1.3.3 Interference Prevention Methods
Measures such as shielding electromagnetic radiation, absorbing impulse current and
filtering power noise are taken into CNC design, which, to some extent, protects the CNC to
external interference. To ensure a steady working of CNC, it is necessary to take following
measures during CNC installation:
① Keep CNC far away from the interference source (such as inverter, AC contactor, static
generator, high pressure generator and sectioning for power line, etc.)
② The power to CNC should be supplied via insulation transformer; the machine installed
with CNC should be grounding; the CNC and drive unit should be connected with
independent grounding wire via grounding point.
③ Interference suppression: connect the RC circuits parallelly at two ends of the AC coil;
the RC circuit should be installed to the inductive load as near as possible; fly-wheel
diode should be inversely connected in serial at two ends of the DC coil ; surge absorber
should be connected in parallel at the winding head of AC motor (see Fig. 1-3-1).
11
GSK988T Turning CNC System User Manual (Volume Ⅱ)
Fig. 1-3-1
④ The outgoing cable of CNC is twisted shielded cable or shielded cable; the shielding
layer of the cable is single-end earthed at CNC side; the signal line should be as short
as possible.
⑤ To reduce the interference between CNC signal cables and high-voltage cable, the
following principles should be followed when wiring:
Group Cable type Group Cable type
AC power line DC coil (24VDC)
A
C
Wiring Requirements:
¾ The cable should be twisted pair.
¾ Bundle the cables of group A separately from the cables in groups B, C, and the distance
should be no less than 10cm; or, make electromagnetic shielding for the cables in group A.
¾ Bundle the cables of group C separately from the cables in group A, and the distance should
be no less than 10cm; or, make electromagnetic shielding for the cables in group C; the
distance between group C cables and group B cables should be no less than 10cm.
¾ Bundle the cables of group B separately from the cables in group A; or, make
electromagnetic shielding for the cables in group B; cables in group B should be bundled
separately from the group C cables as far as possible.
Cables between CNC and servo
AC coil DC relay (24VDC)
Cables between CNC and high-voltage
AC contactor
drive unit
B
electric cabinet
Cables between CNC and machine tool
12
Chapter II Interface Signal Definition and Connection
CHAPTER Ⅱ INTERFACE SIGNAL DEFINITION AND
CONNECTION
2.1 Connection with Drive Unit
2.1.1 Definition of the Drive Interface
1：nCP+
2：nDIR+
3：nPC
4：+24V
5：nALM
6：nSET
7：nEN
Fig. 2-1-1 CN11, CN12, CN13 and
CN14 interfaces (15 pins, D-type
注：n 代表 1、2、3 或 4, 以下相同;
female)
Note: CN1 is the 1st servo axis interface, CN2 is the 2nd one, CN3 the 3rd one, and CN4 the 4th one. Each
controlled axis outputs the corresponding servo axis interface, which is set by parameter NO.1023.
9： nCP-
10：nDIR11：0V
12：+5V
13：+5V
14：0V
15：0V
Signal Description
nCP+、nCP-
nDIR+、nDIR-
nPC Zero point signal
nALM Drive unit alarm signal
nEN Axial enable signal
nSET Pulse inhibition signal
nRDY Servo ready signal
Command pulse signal
Command direction signal
2.1.2 Signal Instruction
(1) Command pulse signal and nCP and command direction signal nDIR
nCP+ and nCP- are command pulse signals, nDIR+ and nDIR- are command direction
signals, the two groups of signals all are difference (AM26LS31) output, the external is suggested
to use AM26LS32 for receiving, refer to the following Fig.2-1-2 about the internal circuit:
Fig. 2-1-2 Internal circuit of nCP and nDIR
(2) Drive unit alarm signal nALM
The drive alarm level is low or high, which is set by 0 bit of parameter 1816; refer to Fig.2-1-3
for the internal circuit.
13
GSK988T Turning CNC System User Manual (Volume Ⅱ)
Fig. 2-1-3. Internal circuit of nALM
Input circuit of this type requires that the drive should provide the signal through the methods
in the following Fig. 2-1-4:
Method 1: Method 2:
Fig. 2-1-4. Methods of the drive unit providing signals
(3) Servo ready signal nRDY
nRDY signal is connected to the servo drive unit ready signal. See Fig. 2-1-5.
(4) Axial enable signal nEN
When CNC is running normally, nEN signal output is valid (nEN signal connects with 0V),
and the drive or the emergency stop alarms, CNC switched off, nEN signal outputs (nEn signal
cuts off 0V). About the internal interface circuit, refer to the following Fig. 2-1-6:
Fig. 2-1-5 Internal circuit of nRDY
Fig. 2-1-6. Internal circuit of nEN
(5) Pulse inhibition signal nSET
nSET signal indicates the servo input inhibition. To improve the anti-interference ability
between CNC and the drive, the signal is low-level when CNC outputs the pulse signal, if there
14
Chapter II Interface Signal Definition and Connection
isn’t any pulse signals, it is high level; refer to the following Fig. 2-1-7 about the internal interface
circuit:
Fig. 2-1-7 Pulse forbidden signal circuit
(6) Zero point signal nPC
Take one-rotation signal of motor encoder or proximity switch signal as zero signals. About
the internal connection circuit, refer to Fig. 2-1-8:
Fig. 2-1-8 Zero point signal circuit
① The illogram of PC signals provided by user is shown in Fig. 2-1-9:
Fig. 2-1-9 Signal illogram
Note: During machine zero return, after releasing the deceleration switch, CNC determines the position of
the reference point through detecting PC signal jumping, and the rising edge check and the falling
edge check are both valid.
② Refer to Fig. 2-1-10 for the connection method of taking one NPN-type Hall unit as the
deceleration signal:
15
GSK988T Turning CNC System User Manual (Volume Ⅱ)
Fig. 2-1-10 Connection with NPN-type Hall unit
③ Refer to the following Fig. 2-1-11 about the connection method of taking one Hall unit in
PNP type as one deceleration signal:
Fig. 2-1-11 Connection with Hall unit in PNP type
2.1.3 Connection with the Drive Unit Interface
The connection between GSK988T system and GSK DA98B drive unit is shown in the
following figure.
16
Chapter II Interface Signal Definition and Connection
Fig. 2-1-12 Connection between GSK988T and DA98B
The connection between GSK988T and GSK DAT2000C drive unit is shown as follows:
Fig. 2-1-13 Connection between GSK988T and DAT2000C drive unit
17
GSK988T Turning CNC System User Manual (Volume Ⅱ)
2.2 Connection with the Spindle
The spindle interface of GSK988T is CN15 (the fifth axis · spindle interface). It is equipped
with the function of pulse output and analog voltage output, and can be adopted with the servo
th
spindle drive unit or the common spindle Inverter, or taken as an independent 5
servo axial
interface. Moreover, GSK988T system is also equipped with the 2nd spindle interface CN41 (refer
to following chapters for details), and it can output 0~+10V analog voltage for extending the 2
nd
spindle or the power unit.
2.2.1 The 5th Axis · Spindle Interface Definition
1：SCP+
2：SDIR+
3：GND
4：SALM
5：X5.0(VPO)
6：X5.1(SAR/PAR)
7：SRDY
8：X5.2(ZSP)
9：GND
10：SPC
11：+24V
12：AGND
13：SVC
Fig. 2-2-1 CN15 servo spindle interface (25 cords, D type female)
14：SCP15：SDIR16：GND
17：+24V
18：SSET
19：SEN
20：Y5.0(VP)
21：Y5.1(TAP)
22：Y5.2(SFR)
23：Y5.3(SRV)
24：GND
25：AGND
18
Chapter II Interface Signal Definition and Connection
Signal
Definition
SCP+, SCP-
SDIR+,SDIR-
SALM Drive unit alarm signal /
SRDY
SSET
SEN
SPC
SVC
AGND
X5.0 (VPO)
X5.1 (SAR/PAR)
X5.2 (ZSP)
Y5.0 (VP)
Y5.1 (TAP) Address of PLC signal, binary output
Y5.2 (SFR)
Y5.3 (SRV)
+24V
GND
Command pulse signal
Command direction signal
Servo ready signal
Pulse forbidden signal
Axial enable signal
Zero point signal
0~+10V analog voltage output
Analog voltage output ground
Address of PLC signal, binary input
Address of PLC signal, binary input
Address of PLC signal, binary input
Address of PLC signal, binary output
Address of PLC signal, binary output
Address of PLC signal, binary output
+24V
0V (binary input & output signal ground ) /
Explanation
Function Defined by Standard
Spindle speed/position status signal
Spindle position/speed reaching signal
Spindle output at zero speed signal
Spindle speed/position switch signal
Spindle speed loop gain selection
signal 2 (used for tapping)
PLC Address
/
/
/
/
/
/
/
/
Spindle CW signal
Spindle CCW signal
/
2.2.2 Signal Instruction
In the 5th axis • spindle interface, the internal circuits of SCP+, SCP-, SDIR+, SDIR-, SALM,
SRDY, SSET, SEN are consistent with that of the similar signal in the drive interfaces CN11,
CN12, CN13, CN14. Refer to section 2.1.2.
(1) Zero point signal SPC
SPC signal is valid at low level. It is different with the nPC signal in CN11, CN12, CN13,
CN14 interfaces (high-level nPC signal is valid). The internal circuit of SPC is shown in Fig. 2-2-2:
Fig. 2-2-2 Internal circuit of SPC
(2) Signals X5.0, X 5.1, X 5.2, X 5.3, X5.4
Signals X5.0, X 5.1, X 5.2, X 5.3, X 5.4 are the PLC signal addresses; binary input; the
internal circuit is shown in Fig.2-2-3.
19
Loading...