hnc HNC-21, HNC-22 Connection Manual

HNC-21/22

HNC-21/22 CNC

CNC

CNC Device

Device

Connection

Connection Manual

Manual

Wuhan

Wuhan Huazhong

Huazhong

Huazhong Numerical

V

2.0

V

2.0

V

V 2.0

2.0

20

10/11

20

10/11

20

20 10/11

10/11

Numerical

Numerical Control

Control

Control Co.

Co.

Co. Ltd

Ltd

HNC-21/22 Connection Manual

Preface

This connection manual is for HNC-21/22 unit. It is recommended that the operator

read this manual before operating the machine.

The organization of this manual:

(1) Precaution

(2) Connection

(3) Parameters

(4) Commissioning

(5) Typical Design

(6) Appendix

i

HNC-21/22 Connection Manual

Introduction

1.

HNC-

1.

1. HNC-

HNC-21/22 (HNC- 21 /TD, HNC- 21 /M D, HNC-22/TD, HNC-22/MD ) possesses the

advanced open-structure, built-in industrial control computer, and high-performance

32-bit CPU. T here are 8.4’(HNC-21)/10.4’(HNC-22) LCD and standard panel for

machine tool engineering. It integrates feed axis interface, spindle interface,

handwheel unit interface, and built-in PLC ( Programmable Logic Circuits ) interface

as a whole. It supports the program storage form, and also supports the program

exchange through USB , DNC (Direct Numerical Control ) , Ethernet. According to its

high performance, compact structure, being easy to use, reliability, and reasonable

price, the Device is mainly suitable for numerical control of turning machines, milling

machines, and machining centers .

- Maximum coordinate axes: 6;

21/22

HNC-

21/22

HNC- 21/22

21/22

- Compatible with various pulsed AC servo drives, step motor drives;

- Standard panel for machine tool engineering is used . N o PLC input/output

interfaces are taken up. The color of machine control panel and the name of key

on the panel can be customized for different users.

- T here are 40 bit (extended to 60 bit) input interfaces , 32 bit optical isolated

output interfaces (extended to 48 bit), handwheel unit interface, analog spindle

control interface and spindle encoder interface.

- With 8.4’(HNC-21)/10.4’(HNC-22) LCD (the resolution is 640 × 480 ) , it is easy to

display the alarm message and simulation of tool - path.

- The program is written in ISO G code, compatible with any common CAD/CAM.

It can implement the linear interpolation, the circular interpolation, the helical

interpolation, the canned cycle, the rotation, the scale, the mirror image, the tool

compensation, the macro-program , etc.

- Machining a specified segment incrementally is especially suitable for machining

the compl icate moulds .

- The breakpoint can be saved and resumed , which provides the convenience and

safety for customers.

ii

HNC-21/22 Connection Manual

- T he backlash and the uni-/ bi - directional pitch error compensation can improve

the machining precision effectively.

- It can save G code program up to 2GB.

- The data can be exchanged through RS232 or Ethernet .

- Flash RAM: 2GB is used to save the program (no cell is required).

- RAM: 32MB is used as a buffer for machining program .

Note: the default configuration of Flash RAM and RAM would not be notified

once again, if the size is increased.

- The dimension of device is 420 × 310 ×

2.

DNC

unit

2.

2. DNC

DNC

DNC unit

(optional)

unit

(optional)

unit (optional)

(optional)

11

0 mm ( W × H × D).

DNC unit is a unit for interface switcher, which are DNC (RS-232) interface, PC

keyboard (PS2) interface, Ethernet interface .

Since there are DNC (RS-232) interface, PC keyboard (PS2) interface, and USB

interface on HNC-21, DNC unit is mainly used on HNC-22.

3.

Handwheel

3.

Handwheel

3.

3. Handwheel

Handwheel unit

unit

(optional)

unit

(optional)

unit (optional)

(optional)

- S tandard four -wire m anual pulse generator

- Four-axis switch

- Three kinds of magnification switch

- Emergency stop button

- Handwheel enabl e button

- Pilot lamps

4.

I/O

4.

I/O

4.

4. I/O

I/O Terminal

Terminal

Terminal Board

Board

The I/O terminal board is connect ed to the optically isolated PLC inputs and outputs

through cables to facilitate wiring, commissioning and maintenance for the control

cabinet.

- 20-bit PLC inputs or 16-bit PLC outputs

- P ilot lamp on e ach input or output interface

- Both NPN and PNP interfaces are provided .

iii

HNC-21/22 Connection Manual

5.

Relay

5.

Relay

5.

5. Relay

Relay Terminal

Terminal

Terminal Board

Board

Board (optional)

(optional)

I t is connect ed to the optically isolated PLC outputs through cables to facilitate wiring,

commissioning and maintenance for the control cabinet.

- 8 -bit PLC direct terminal out puts + 8-bit relay normally open contact point

outputs

- Two independent double-pole relays. Both normally open + normally closed

contact points are supported.

- P ilot lamp on e ach input or output interface .

II 图形符号系统第 1 页共 1 页

6.

Safety

6.

Safety

6.

6. Safety

Safety Placard

Placard

: m ust do.

; especially important

: line or boundary

: signal direction

: point connected

: cable bunched/diverged

: shielding layer

: passive NO and NC

: plug and socket

: encoder

【】

: s h all not be done.

: default, initia l setting

: a set of cable

: exchange

: terminal

: cable bunched/diverged

: grounding

: coil

: transducer

: motor

: pilot lamp

: gearbox

iv

: mechanical linkage

HNC-21/22 Connection Manual

Table

Table of

Preface .................................................................................................................................................................... i

Introduction ............................................................................................................................................................ ii

Precaution

1

Precaution

1

1 Precaution

Precaution

To

protect the user and prevent damage to the machine, please read the following

precautions before attempting to use the machine.

1

1. Precaution

1.1

Safety

1.1

Safety

1.1

1.1 Safety

Safety

1.1.1

1.1.1 Transportation

1.1.2

1.1.2 Installation

Transportation

Transportation and

The product should be transported properly according to its weight.

The number of products stacked must not be more than what stipulated.

Do not climb up or stand on the product. Do not stack heavy things on it.

Dragging its cable to move or lift the product is not allowed.

Protect the front panel and screen from impact and cut.

Keep damp-proof while storing and transporting.

Let us know in time if the product has been stored overtime.

Installation

Because its casing is not of waterproof design, the product sh all be installed in a cabinet to prevent from being rained on or directly sun-scorching.

and

Storage

and

Storage

and Storage

Storage

There sh all be enough space as required between the product and the cabinet case or other devices.

The product sh all work in the environment with good ventilation, without inflammable air, and without the erosion by corrosive material such as abrasive, oil-mist, metal powder etc. Any conductor as metal or machine oil is prohibited to get into the product.

Do not put the product near any inflammable or explosive matter.

The installation sh all be firm and without v ibration. Do not throw or strike the product while installing. Neither a ny colliding against n or loading on the product is allowed.

2

1. Precaution

1.1.3

1.1.3 Wiring

Wiring

Workers undertaking wiring or inspection must be qualified to do the jobs.

The NC device must be grounded reliably . T he earth-resistance must be less than 4 ohm. Do not take the neutral as a ground . O therwise , the system may not work normally and stably because of interference.

Wiring s hall be correct and firm to avoid wrong operation.

Do not transfer either the position signal from NC device to servo driver unit or the position feedback signal from position frequency converter to servo driver unit and NC device through terminals or sockets . O therwise , the NC device may not work owing to interference.

Any voltage at terminals must have its correct value and polarities (+, -) as mentioned in the manual . O therwise , the short circuit or permanent damage to the machine may occur.

The surge-absorbed diode of DC relay controlled by PLC output signal from NC device must be wired as shown in F igure 1-1 to prevent the damag e t o device.

A

perso n n el’s hands must be kept dry while touching the plugs or switches to

avoid getting an electric shock or resulting in device damage.

Any tear on electric wires is not allowed. The wires sh all not be squeezed to avoid leakage or even short-circuit.

It is absolutely not allowed to insert or pull out any plug or open the NC cabinet door with the power supply on.

1.1.4

1.1.4 Commissioning

1.1.5

1.1.5 Operation

Commissioning

Before putting the device in motion, check the parameter setting at first. Incorrect settings would lead to unexpected results.

Set parameter in its permissible range. Oversetting may lead to unstable operation or even the damag e to the device.

Check if the cables of servomotor and the encoder wires are corresponding to each other.

Operation

PLC output

Relay coil

DC+24V

Figure 1 1 the surge-absorbed diode

3

1. Precaution

Personnel to operate the device must be competent for their work.

Before plugging in to get the main source, make sure that the main switch is off to avoid accidental start -up .

While doing electrical design, it sh all take into account that the emergency stop button of NC device could cut the power supplies for servo motion, spindle motion and motions of all other moving parts when the system accidents occur. For example, cut off the power supply (section 2. 9 for details ).

While designing or modifying the PLC programs, make sure that the operation signal has been off before the reset alarm signal . For example, the spindle rotation signal must be off before resetting the spindle alarm signal .

Do not refit the device.

To

prevent from or reduce the influence of electromagnetic interference on NC

device, refer to section 2.10 E lectromagnetic Compatibility Design.

To

reduce the electromagnetic interference, a low-pass filter can be added i f

there are electronic devices .

Do not turn on and off the system frequently . T he interval between on and off operations must be at least 3 minutes.

T he operator’s hands must be kept dry, clean and no greasy dirt during operation . It is suggested to keep the clear protection film on the panel.

Do not press the keys hard . It is not allowed to strike at the keyboard with wrench or other sharp-edged and hard articles.

Operators shall not leave the machine while operating the devices.

1.1.6

1.1.6 Maintenance

Maintenance

Power supply sh all be turned off before checking, replacing or installing parts or elements.

When short-circuit or overload happens, do not turn on the power again un less checking and fixing the breakdown.

When alarm has happened, do not restart the device un less the accident is cleared off.

Do not install or operate the device if it is damaged or lack of p arts and elements.

The aging of electrolytic capacitors may lead to low performance. damages arising from there, the electrolytic capacitors should be replaced, under the normal operation conditions, every ten years. Please c ontact with us at any time to solve the relevant problems.

To

avoid the

4

1. Precaution

1.1.7

1.1.7 Waste

1.1.8

1.1.8 General

Waste

Waste Treatment

Treat the wastes as ordinary industrial wastes.

General

General Instructions

While putting the device in operation, install the cover plate and safety equipment perfectly and operate the device as mentioned in manuals.

Read over chapter 2.10 Electrical Design in detail and notice all the emphasized points.

Treatment

Instructions

5

1. Precaution

1.2

Unpacking

1.2

Unpacking

1.2

1.2 Unpacking

Unpacking and

and

and Checking

Checking

1.2.1

1.2.1 List

After unpacking, please make sure that :

- The product is what you ordered.

- No damage occurs during transportation.

- The received components included the accessories are complete and without

Please Contact us in time if any problem exists .

1.2.2

1.2.2 Product

The following is the description of HNC- 21 .

List

damage.

Product

Product Type

21: NC of standard type 22: NC of advanced type

Type

HNC

HNC –

–

– 21

21

21 M

Unit Type M: Milling

T:

Turning

M

D

–

M

D

M D

D –

32

–

32

– 32

32 –

Storage Size

MB

–

H

–

– H

02

H

02

H 02

02

Memory Size Flash RAM – MB Hard disk -- GB

T

ype of feed axis

D: pulse interface for pulse servo or step per motor driver

Figure 1 2 Description of HNC-21

6

Memory type: F: Flash RAM H: IDE hard disk

1.3

Esc

Tab

GECYBZ

QRFH

S T

％

SP

\:;

[8]^

6 7

2 3 4

BS

Enter

Upper

-

=+/

0

.

Del

Alt

Pgdn

+X

+Z

快进

-X

+4TH -Y

-4TH+Y-Z

循环启动

进给保持

V

J K

W L

P N

O

X

A

D

M

"

5

#

1

*

9

Pgup

+-

100％

- +

快速修调主轴

制动

刀具松/紧主轴修调

+-

100％

进给修调主轴

反转

主轴定向

回零

1000

冷却开停

主轴正转机床锁住主轴

停止

主轴冲动

换刀允许

I

U

主轴停止

主轴冲动

换刀允许

主轴正转

主轴定向

冷却开停

F5F4 F6

主轴反转

主轴制动

进给修调

-

快速修调

- +

+

100％

-Z

-X

刀具松/紧主轴修调

-

F8F7 F9

+

100％

+4TH

F10

+X

-4TH+Y

快进

+Z-Y

PgDn

EnterAlt

SP

[8]^

6 75

#

+

PgUp

*9/

.

0

Upper

Shift

Del

=

-

BS

R

W

:1"

2 3

;

I

U

M

D

V

J K

H

S T

4

\

％

P

L

F

Q

O

N

Tab

CXA B

Y Z G

E

Esc

a ） HNC - 21

b ） HNC - 2 2

Dimensions

1.3

Dimensions

1.3

1.3 Dimensions

Dimensions

1. Precaution

Figure 1 3 Dimension of HNC-21/22

7

1. Precaution

Esc

Tab

GECYBZ

Q

RFH

S T

％

SP

\:;

[8]^

6 7

2 3 4

BS

Enter

Upper

-

=+/

0

.

Del

Alt

Pgdn

+X

+Z

快进

-X

+4TH -Y

-4TH+Y-Z

循环启动

进给保持

V

J K

W L

P N

O

X

A

D

M

"

5

#

1

*

9

Pgup

+-

100％

- +

+-

100％

I

U

100

1 5

1.4

Installation

1.4

Installation

1.4

1.4 Installation

Installation

Figure 1 4 Dimension of Installation (HNC-21 as an example)

Please note the following items when designing the cabinet (control cabinet, console,

and pendant box) .

1. As shown in Fig ure 1-4 , it needs to have at least a 100mm-space between NC

device and the rare wall of the cabinet to facilitate plugging the cables and heat

radiation .

2. The cabinet structure must be of IP54 protection class. S ome requirements

should be met :

1) The material used to make the cabinet must bear any mechanical, chemical,

or heat stress and the moisture influence normally happened .

2) It needs to stick the adhesive tape along the door crack to eliminate the

gap .

3) The cable entrances must be sealed properly, so that it can be unsealed

easily if necessary .

4) Fans or heat exchanger must be equipped to radiate the heat from cabinet .

5) If fans are used, the air filters are required at both inlets and outlets .

6) Be careful not to let the dust come into the cabinet through heat dissipation

holes. Dust or other materials such as cutting lubricant, mist can get into the

device and attach itself to circuit board to make the insulation aging and

even lead to circuit damage. Therefore, it needs to know the environment

and the direction of air discharge; the warm air stream should be directed

8

1. Precaution

Air flow

NC cabinet

Machine tool

against the pollution source, as shown in Fig ure 1-5.

Figure 1 5 Air flow direction in NC cabinet

3. Temperature in the cabinet shall not be higher than 50 ℃ . Alternatively, more

effective steps shall be applied to dissipate the heat.

4. The control panel must be placed where the coolant or other liquid does not

reach .

5.

To

reduce electromagnetic interference, k eep cables or electric components

having supply voltage higher than 50V apart from NC device at least 100mm .

6. The NC device should be installed where the commissioning and maintenance

can be done conveniently .

9

1. Precaution

1.5

Environmental

1.5

Environmental

1.5

1.5 Environmental

Environmental Requirement

Requirement

1.5.1

1.5.1 Weather

The NC device works normally in the environment shown as follows.

- A mbient temperature : 0 ~ 40 ℃

- R elative humidity : 30% ~ 95% ( without dew )

- A tmospheric pressure : 86 ~ 106k Pa

1.5.2

1.5.2 Elevation

The NC device works normally with an elevation of less than 1000 m.

1.5.3

1.5.3 Transportation

It is proper to transport and store the NC device within a temperature range of

(-40 ℃ ~ +55 ℃ ). The device can survive up to 70 ℃ in a short-term, less than 24

hours, transportation or storage. It is necessary to adopt moisture-proof, shockproof

and impact-resistant measures to avoid damage .

Weather

Weather Condition

Elevation

Transportation

Transportation and

Condition

and

Storage

and

Storage

and Storage

Storage

1.5.4

1.5.4 Mechanical

The NC device sh all be installed far from any shock resource to prevent from the

influence of shock, impulse and impact. If the device has to be installed near these

resources, additional measures are necessary to ensure the NC device against

resonance, and the vibration amplitude must be less than 0.05mm (frequency range:

5-55 Hz) .

1.5.5

1.5.5 Environmental

While transporting, storing or operating, keep the NC device out of the strong

microwave radiation and the strong electromagnetic interference. Do not let

excessive pollutants (dust, acid, corrosive gas, salty matter) intrude into NC device.

The device should not work in an environment accompanied with strong vibratio n.

10

Mechanical

Mechanical Environment

Environmental

Environmental Pollution

Environment

Pollution

HNC- 21/22 Connection Manual

2

Connection

2

Connection

2

2 Connection

Connection

Thi s chapter would introduce:

-

Total

connection diagram

- I nterface

- Power supply connection

- Connection to DNC

- Connection to computer

- I/O on NC device

- Connection to handwheel unit

- Connection to spindle device

- Connection to feed drive

- Design of E-Stop and Overtravel Released

- Design of Electromagnetic Compatibility

11

2. Connection

Power s

upply

Keyboard

XS1

XS

30 -

XS3

5

XS2

XS

8

XS3

XS

9

XS5

XS

10 - XS12

XS

7

XS20 - XS22

On-off input

Feed device

On-off output

USB

Ethernet

RS232

Handheld unit

Spindle unit

2.1

Total

2.1

Total

2.1

2.1 Total

Total Connection

This section shows the total connection diagram of HNC-21/22.

Connection

Connection Diagram

Diagram

[Note]

(1) As it is shown Fig ure 2 - 1, HNC- 21/22 controls various types of feed units

(2) PLC I/O (maximum: 60/48) can be connected through XS10-XS12 (input),

(3) The interface to connect to the third axis on HNC-21 or the fourth axis on

(4) The interfaces XS12 and XS22 which provide 20/16 I/O are optional.

(5) Ethernet interface XS3 is optional.

Figure 2 1

through XS 30 -XS3 5. Up to six different types of feed device can be connected.

XS20-XS22 (output).

HNC-22 is optional.

Total

Connection Diagram of HNC-21/22

12

2.2

Interface

2.2

Interface

2.2

2.2 Interface

Interface

2. Connection

2.2.1

2.2.1 NC

Th is section shows the interface of HNC-21.

NC

Device

NC

Device

NC Device

Device

Figure 2 2 Interface of HNC-21

Figure 2 3 Interface of HNC-22

13

2. Connection

RS232 switcher

PC keyboard switcher

Ethernet switcher

RS232 Interface

PC keyboard interface

Ethernet Interface

Ethernet switcher

RS232 switch er

PC keyboard switcher

XS1: Power supply interface XS2: Keyboard interface

XS3: Ethernet interface XS5: RS232 interface

XS7: USB interface XS8: Handwheel unit interface

XS9: Spindle control interface X10~X12: PLC inputs interface

X20~X22: PLC outputs interface X30~X35: feed axis control interface

2.2.2

2.2.2 DNC

There are RS232, PC keyboard and E thernet interfaces on DNC unit . The following

Fig ure 2-4 shows the interface of DNC unit .

As it is shown in Figure 2-4, the interfaces are used to connect with PC or other

devices, and the switchers are used to connect with HNC-21/22. The interfaces on

DNC unit correspond with the interfaces shown in Figure 2-2 or Figure 2-3.

DNC

DNC unit

unit

unit (optional)

(optional)

Figure 2 4 Interface of DNC unit

2.2.3

2.2.3 Handwheel

As it is shown in Figure 2-5, t he handwheel unit is equipped with the emergency stop

button, pilot lamps, axis switch (OFF, X,

and the manual pulse generator. It is connected to XS8 of HNC-21/22.

14

Handwheel

Handwheel unit

unit

unit (optional)

(optional)

Y,

Z), m agnification switch (X1, X10, X100) ,

DB25 PIN

Figure 2 5 Interface of Handwheel unit

2. Connection

2.2.4

2.2.4 I/O

There are two kinds of I/O terminal boards – input terminal boards and output

terminal boards. They are usually used as a switcher unit to connect XS 10, XS11,

XS12, XS20, XS21, and XS22 of HNC-21 /22 .

Each input terminal board or output terminal board contains both NPN and PNP

terminals.

E ach input terminal board contains 20 bit input terminals . Each output terminal

board contains 16 bit output terminals, 2 bit emergency-stop terminal, and 2 bit

overtravel terminal.

- I nput terminal board

I/O

Terminal

I/O

Terminal

I/O Terminal

Terminal Boards

Boards

Boards (optional)

(optional)

15

2. Connection

- O utput terminal board

Figure 2 6 Input terminal board

Figure 2 7 Output terminal board

16

2.3

DC

24V ≥50W

+24V

24V GND

External supply

2

Casing ground

HNC-21

AC

24V ≥100W

XS1

1

5

2

AC 24V

External supply

1

4

6

Power

2.3

Power

2.3

2.3 Power

Power Supply

Supply

Supply Connection

Connection

2. Connection

2.3.1

2.3.1 General

If the external supply 1 is of AC 24V, an independent power supply for NC device is

suggested to use (refer to Fig ure 2 -8 ) .

General

General Requirement

NC device (External supply 1) : AC24V , or DC24V/100W;

PLC power (External supply 2): DC24V, no less than 50W;

Cables: Shielded cables or twisted cables ;

Requirement

Figure 2 8 Power Supply 1

It is suggested to use a switch supply of DC 24V for the external supply 2. It is

proper to increase the supply capacity in case there are many DC 24V relays

controlled by PLC outputs, or to have an additional power supply, having a common

ground with the external supply 2. If the brake of Z axis (spindle) and

electromagnetic valves also require DC 24V supply , try to use another supply (not

the external supply 2) to prevent NC device from interference induced by loads with

large inductance .

I f the external supply 1 is of DC 24V , it is allowed to have a shared switching supply,

having capacity of no less than 1 45 W for both the external supply 1 and the external

supply 2 (refer to Fig ure 2 -9 ) .

17

2. Connection

Casing ground

HNC - 21 /22

DC24V

≥ 1 5 0W

XS1

1, 2

4, 5

6

+24V

24V G ND

External supply

As shown in Fig ure 2 -10 , the external supplies 1 and 2 provide power for PLC

elements and manual pulse generator of handwheel unit through the interface XS8

on NC device .

Figure 2 9 Power Supply 2

2.3.2

2.3.2 Grounding

- Protective Grounding

Grounding

T he ground wire of power supply (pin 6 of XS1) is connected with PE

interface of NC device. An additional copper ground wire at le ast 2.5 mm

shall be taken as the ground wire and connected with PE interface of NC

unit , since the ground wire of the power cable is thin.

- Signal Grounding

The pin 4 of XS1 (DC 24VG) is connected to pin 1, 2, 14, and 15 of XS10,

XS11, XS12, XS20, XS21, and XS2 2 . Moreover, t o reduce the current

passing the pin 4 (DC 24V G ) of XS1 and to raise the anti-interference ability

of PLC signals , those pins (1, 2, 14, 15) sh all be connected to the ground of

external supply DC 24V (Figure 2-10).

2

18

2. Connection

HNC -21/22

Int ern al

circuit

Handhe ld un it

+24V

+

24V

+24V

24V G ND 24V G

24V

24V G ND

24V G

XS10

, 11

,12

XS20 ,21

,22

XS8

Ext

ern al

supply 2

DC24V ≥

50W

XS1

2

4

6

+5V

5V G

3

,16

1,14 2,15

25

13

1,14 2,15

P ower s upply 2

DC 24V ≥ 1 50W

Figure 2 10 Signal grounding

In case some electrical components (such as relays, pilots in buttons,

approach switches, and Hall switches) to control or receive signals from

I/O have their independent power supply, the supply should have common

ground with the supply of these inputs and outputs, Otherwise , NC device

can not control those electrical components or receive signal from th o se

component s reliably .

19

2. Connection

XS5

XS3

XS2

HNC - 21/22

DNC

unit

XS5’

XS3’

XS2’

NC device

Keyboard switcher

Ethernet

switcher

RS232

switcher

1 DATA

3 GND

4 VCC

5 CLOCK

1 TX _ D1+

2 TX_D1 -

3 RX_D2+

4 BI_D3+

5 BI_D3 -

6 RX_D2 -

7 BI_D4+

8 BI_D4 -

2 RXD

3 TXD

5 G ND

HNC - 21 /22

DNC unit

XS2

XS3

XS5

DATA 1

GND 3

VCC 4

CLOCK 5

TX _ D1+ 1

TX_D1 - 2

RX_D2+ 3

BI_D3+ 4

BI_D3 - 5

RX_D2 - 6

BI_D4+ 7

BI_D4 - 8

RXD 2

TXD 3

GND 5

XS5 ’

C

able length

<1

m

2.4

Connection

2.4

Connection

2.4

2.4 Connection

Connection to

to

DNC

to

DNC

to DNC

DNC unit

unit

DNC unit is a unit for interface switcher, which are DNC (RS-232) interface, PC

keyboard (PS2) interface, Ethernet interface .

Since there are DNC (RS-232) interface, PC keyboard (PS2) interface, and USB

interface on HNC-21, DNC unit is mainly used on HNC-22.

The following figure is the connection between DNC unit and NC device.

Figure 2

11

Connection between DNC and NC unit

The distance between DNC unit and NC device should not be longer than one meter.

The following figure shows the detailed connection between DNC and NC unit.

Figure 2 12 Detailed connection between DNC and NC unit

20

2. Connection

PC

NC device

2 RXD

3 TXD

5 GND

XS5

RXD 2

TXD 3

G ND 5

RS232

C able length <15m

PE

PC

DNC unit

NC device

2 RXD

3 TXD

XS5

RXD 2

TXD 3

XS5’

2 RXD

3 TXD

XS5

RXD 2

TXD 3

<15

m

C abin et

<1

m

PE

5 GND

GND 5

5 GND

GND 5

2.5

Connection

2.5

Connection

2.5

2.5 Connection

Connection to

HNC-21/22 can be connected to PC by using RS232 or Ethernet interface, so that

the data can be shared and exchanged. The operator can directly use the interface

XS3 or XS5 on NC device, or use the optional DNC unit to connect NC device with

PC.

to

Computer

to

Computer

to Computer

Computer

2.5.1

2.5.1 RS232

RS232

RS232 Interface

Interface

Figure 2 13 Connect with PC by RS232 (no DNC unit)

Figure 2 14 Connect with PC by RS232 (with DNC unit)

2.5.2

2.5.2 Ethernet

It is easy and reliable to connect NC device with the computer through E thernet

interface . The operator can use the cable to directly connect with PC ( Fig ure 2 -15,

Figure 2-16 ) , or use an HUB t o connect with any computer in local area network

(Fig ure 2 -17, Figure 2-18 ). The connection can be made either through Ethernet

interface at the rare of NC device, or through the interface of DNC unit .

Note:

1. The special network cables sh all be used while wiring.

2. The type of Ethernet interface is RJ45 .

Ethernet

Ethernet Interface

Interface

21

2. Connection

PC

HNC-21

NC device

HNC

- 21/22

1 TX _ D1+

2 TX_D1 -

3 RX_D2+

4 BI_D3+

5 BI_D3 -

6 RX_D2 -

7 BI_D4+

8 BI_D4 -

XS3

TX _ D1+ 1

TX_D1 - 2

RX_D2+ 3

BI_D3+ 4

BI_D3 - 5

RX_D2 - 6

BI_D4+ 7

BI_D4 - 8

Ethernet

<50

m

PC

HNC - 21 /22

DNC unit

NC device

C abin et

1

2

3

4

5

6

7

8

XS3

TX_D1+ 1

TX_ D1- 2

RX_D2+

3

BI_D3+

4

BI_ D3- 5

RX_ D2- 6

BI_D4+

7

BI_ D4- 8

Ether net

<50m

1 TX _ D1+

2 TX_D1 -

3 RX_D2+

4 BI _D3+

5 BI_D3 -

6 RX_D2 -

7 BI_D4+

8 BI_D4 -

TX _ D1+ 1

TX_D1 - 2

RX_D2+ 3

BI_D3+ 4

BI_D3 - 5

RX_D2 - 6

BI_D4+ 7

BI_D4 - 8

XS3 ’

<1

m

HUB

HNC - 21

NC device

HNC -21/22

1 TX _ D1+

2 TX_D1 -

3 RX_D2+

4 BI_D3+

5 BI_D3 -

6 RX_D2 -

7 BI_D4+

8 B I_D4 -

XS3

TX _ D1+ 1

TX_D1 - 2

RX_D2+ 3

BI_D3+ 4

BI_D3 - 5

RX_D2 - 6

BI_D4+ 7

BI_D4 - 8

interface

<50

m

- U sing cables

Figure 2 15 Use cables to connect with PC by Ethernet interface (no DNC unit)

Figure 2 16 Use cables to connect with PC by Ethernet interface (with DNC unit)

- U sing HUB

Figure 2 17 Use HUB to connect with PC (no DNC unit)

22

2. Connection

HUB

HNC - 21 /22

DNC unit

NC device

Cabinet

1

2

3

4

5

6

7

8

XS3

TX _ D1+ 1

TX_D1 - 2

RX_D2+ 3

BI_D3+ 4

BI_D3 - 5

RX_D2 - 6

BI_D4+ 7

BI_D4 - 8

<50

m

1 TX _ D1+

2 TX_D1 -

3 RX_D2+

4 BI_D3+

5 BI_D3 -

6 RX_D2 -

7 BI_D4+

8 BI_D4 -

TX _ D1+ 1

TX_D1 - 2

RX_D2+ 3

BI_D3+ 4

BI_D3 - 5

RX_D2 - 6

BI_D4+ 7

BI_D4 - 8

XS3 ’

<1

m

Figure 2 18 Use HUB to connect with PC (with DNC unit)

23

2. Connection

IF=5~9mA

24V G ND

+5V

NPN i nput : 24V G ND

24V G ND

+ 2 4V

IF=5~9mA

+ 24V

+5V

PNP i nput : 24V

24V G ND

2.6

PLC

2.6

PLC

2.6

2.6 PLC

PLC I/O

Built-in I/O (40/32 bit, extended to 60/48 bit) on HNC-21/22 unit are connected to I/O

terminal board or output relay.

I/O

Interface

I/O

Interface

I/O Interface

Interface

2.6.1

2.6.1 Input

(1) E quivalent circuit

Input

Input interface

interface

Figure 2 19 Equivalent circuit of NPN input interface

(2) T echnical parameters

24

Figure 2 20 Equivalent circuit of PNP input interface

Note

:

Note

:

Note

Note :

:

- The type of the input interfaces on HNC-21/22 unit is NPN.

- The input terminal board includes two types of input terminal: NPN and

PNP.

- The optically coupled technique is adopted. The highest isolated voltage is

2. Connection

IF=5

～ 9mA

+ 2 4V

NPN input : 24V GND

a ） NP N input

N

24V G ND

IF=5～9mA

+ 24V

PNP input : 24V

b ） PNP input

P

24V GND

2500V RMS (one minute).

- The supply voltage is 24V.

- Turn-on current IF=5~9mA.

- The leak current≤0.1mA

- Filtering time is approximately 2msec.

Note:

Note: The power supply of a ny active switch units (such as non-contact switch,

Hall switch etc.) must be DC24V .

(3) Typical application of circuit

- Connection to external passive switches or relay contacts;

As it is shown in Figure 2-21, NPN or PNP input terminal can be used. One

contact is connected to the input interface, and the other contact is

connected to 24V (NPN input), or 24VG (PNP input).

Figure 2 21 Connection to passive switch or relay contacts

- Connection to external active switches

Selecting NPN or PNP input depends on the output type of module. Please

refer to the description of components, if necessary.

a) NPN input terminal shall be selected for NPN output type of the module

(Figure 2-22 a).

b) PNP input terminal shall be selected for PNP output type of the module

(Figure 2-22 b).

25

2. Connection

I F=5～

9mA

+

24V

a ） NP N input

N

24V GND

+

24V

b ） PNP input

P

IF=5

～

9mA

24V

GND

14:24VG 15:24VG 16:X2.3 17:X2.1 18:X1.7 19:X1.5 20:X1.3 21:X1.1 22:X0.7 23:X0.5 24:X0.3 25:X0.1

1

13

14

25

1 :

24VG

2 :

24VG 3 :NC 4 :

X2.2 5 :

X2.0 6 :

X1.6 7 :

X1.4 8 :

X1.2 9 :

X1.0 10 :

X0.6 11 :

X0.4 12 :

X0.2 13 :

X0.0

XS10

（

DB25 PIN

）

14

:

24VG 15

:

24VG 16

:

X4.7 17

:

X4.5 18

:

X4.3 19

:

X4.1 20

:

X3.7 21

:

X3.5 22

:

X3.3 23

:

X3.1 24

:

X2.7 25

:

X2.5

1

13

14

25

1 :

24VG 2 :

24VG 3 :NC 4 :

X4.6 5 :

X4.4 6 :

X4.2 7 :

X4.0 8 :

X3.6 9 :

X3.4 1 0 :

X3.2 11 :

X3.0 12 :

X2.6 13 :

X2.4

XS11

（

DB25 PIN

）

14

:

24VG 15

:

24VG 16

:

X7.3 17

:

X7.1 18

:

X6.7 19

:

X6.5 20

:

X6.3 21

:

X6.1 22

:

X5.7 23

:

X5.5 24

:

X5.3 25

:

X5.1

1

13

14

25

1 :

24V

G

2 :

24VG 3 :NC 4 :

X7.2 5 :

X7.0 6 :

X6.6 7 :

X6.4 8 :

X6.2 9 :

X6.0 1 0 :

X5.6 11 :

X5.4 12 :

X5.2 13 :

X5.0

XS12

（

DB25 PIN

）

Figure 2 22 Connection of active input switch

(4) Pin of PLC input interface

� Input interface on NC device

Figure 2 23 Interface of XS10, X11 and XS12

Table 2 1 Description of XS10, XS11 and XS12

Signal Description 24VG External switch power DC24V Ground X0.0~X7.3 PLC input (60 bit)

� Interface of input terminal board

26

Figure 2 24 Input terminal board

25

:

NI1 24

:

NI3 23

:

NI5 22

:

NI7 21

:

NI9 20

:

NI11 19

:

NI13 18

:

NI15 17

:

NI17 16

:

NI19 15

:

24VG 14

:

24VG

13

:

NI0 12:NI2 11

:

NI4 10

:

NI6 9

:

NI8 8

:

NI10 7 :NI12 6

:

NI14 5

:

NI16 4

:

NI18 3

:

NC 2

:

24VG 1

:

24VG J1（

DB25/F

）

2. Connection

Figure 2 25 Interface of J1 on input terminal board

Table 2 2 Description of input J1 and J2

Interface Signal Description

J1 (DB25/F)

J2

24VG External switch power DC24V Ground NI0~NI19 PLC input +24V GND

External switch power DC24V

N0~N19 NPN input terminal P0~P19 PNP input terminal

Note:

Note: NPN and PNP can be used on the same bit.

2.6.2

2.6.2 Output

Output

Output interface

interface

27

2. Connection

IL≤ 100mA

+24V

+5V

24V G

round

L

IL≤ 100mA

+24V

+5V 24V

Ground

L

(1) E quivalent circuit

- NPN output interface

Figure 2 26 Equivalent circuit of NPN output interface

- PNP output interface

Figure 2 27 Equivalent circuit of PNP output interface

Note

:

Note

:

Note

Note :

:

- The type of the output interfaces on HNC-21/22 unit is NPN.

- The output terminal board includes NPN and PNP input terminal.

(2) T echnical parameters

- The optically coupled technique is adopted. The highest isolated voltage is

2500V RMS (one minute).

- The supply voltage is 24V.

- The maximum output current is 100mA.

(3) Typical application of circuit

- Drive a LED

NPN or PNP output terminal can be used to drive a LED.Aresistance about

28

10mA is connected in series to control the current flowing through LED .

IL=10mA

+24V

2.5k

24V

G

ND

a ） NPN output

IL=10mA

P

2.5k

24V G

ND

b

） PNP output

N

+24V 24V

G ND

a ） NPN output

b ） PNP output

N

P

reheating

resistanc e

+24V

24V GND

P

reheating

resistance

I L≤1 0

0mA

IL≤

1 0

0mA

Figure 2 28 Using PLC output to drive LED

- Drive a filament pilot lamp

2. Connection

NPN or PNP output terminal can be used to drive a filament pilot lamp.

preheating resistance is required to reduce the current shock while turning

the pilot on . The ohm value of the resist ance should be large enough to

keep the pilot off .

Figure 2 29 Using PLC output to drive a filament pilot lamp

- Drive an inductive load (such as relay)

NPN or PNP output terminal can be used to drive an inductive load.

flywheel diode sh all be connected in parallel with the coil of the relay to

A

protect the output circuit from interference (some relays have been

equipped with flywheel diodes) .

Note:

Note: The voltage of coil shall be DC24V.

29

2. Connection

IL≤ 100mA

+24V

F

lywheel

diode

24V GND

a ） NPN output

IL≤

1

0 0mA

P

24V G

ND

b ） PNP output

N

KA

R elay coil

F

lywheel

diode

KA

R elay c oil

25

:

Y0.1 24

:

Y0.3 23

:

Y0.5 22

:

Y0.7 21

:

Y1.1 20

:

Y1.3 19

:

Y1.5 18

:

Y 1.7 17

:

NC 16

:

NC 15

:

24VG 14

:

24VG

13 :

Y0.0 1 2:

Y0.2 11 :

Y0.4 10 :

Y0.6 9 :

Y1.O 8 :

Y1.2 7 :

Y1.4 6 :

Y1.6 5 :NC 4 :NC 3 :NC 2 :

24VG 1 :

24VG

XS20 （

DB25 PIN

）

25

:

Y 2 .1 24

:

Y 2 .3 23

:

Y 2 .5 22

:

Y 2 .7 21

:

Y 3 .1 20

:

Y 3 .3 19

:

Y 3 .5 18

:

Y 3 .7 17

:

NC 16

:

NC 15

:

24VG 14

:

24VG

13 :Y2 .0 1 2:

Y

2 .2 11 :Y2 .4 10 :Y2 .6 9 :Y3 .O 8 :Y3 .2 7 :Y3 .4 6 :Y3 .6 5 :NC 4 :NC 3 :NC 2 :

24VG

1 :

24VG

XS2

1

（

DB25 PIN

）

25

:

Y 4 .1

24

:

Y 4 .3

23

:

Y 4 .5

22

:

Y 4 .7

21

:

Y 5 .1

20

:

Y 5 .3

19

:

Y 5 .5

18

:

Y 5 .7

17

:

NC

16

:

NC

15

:

24VG

14

:

24VG

13 :Y4 .0 1 2:

Y

4 .2 11 :Y4 .4 10 :Y4 .6 9 :Y5 .O 8 :Y5 .2 7 :Y5 .4 6 :Y5 .6 5 :NC 4 :NC 3 :NC 2 :

24VG

1 :

24VG

XS2

2

（

DB25 PIN

）

Figure 2 30 Using PLC output to drive an inductive load

(4) Pin of PLC output interface

� Output interface on NC device

Figure 2 31 Interface of XS20, XS21 and XS22

Table 2 3 Description of XS20, XS21 and XS22

Signal Description 24VG External switch power DC24V Ground Y0.0~Y5.7 PLC output (48 bit)

� Interface of output terminal board

30

Figure 2 32 Output terminal board

25:NO1 24:NO3 23:NO5 22:NO7 21:NO9 20

: NO1 1

19

: NO1 3

18

: NO1 5

17 : ESTOP3

16

: OTB S2

15

: 24V G

14

: 24V G

13:NO0 12:NO2 11:NO4 10:NO6 9 :NO8 8

: NO1 0

7

: NO1 2

6

: NO1 4

5

: NC

4 : ESTOP1

3

: OTB S1

2

: 24V G

1

: 24V G

J1

（

DB25 /M

）

2. Connection

Figure 2 33 Interface of J1 on output terminal board

Table 2 4 Description of output J1 and J2

Interface Signal Description

24VG External switch power DC24V Ground NO0~NO15 PLC output

J1 (DB25/M)

J2

ESTOP1 ESTOP3 OTBS1 OTBS2 +24V GND

Emergency stop

O vertravel released

External switch power DC24V

NC Not connection N0~N15 NPN output terminal ES1, ES3 Emergency stop P0~P15 PNP output terminal

Note:

Note: NPN and PNP can be used on the same bit.

31

2. Connection

Cabinet

F

ield on-off input module

～

12

1 , 2 , 14 , 15

24V GND

X0.0 ～

X7.3

4 … 13

16 … 25

HNC -21/22

External supply 2 ： +24V

P ower of on - off signal

24V GND

<15 m

C ommon GND

C

C abinet

abinet

XS 2 0～2 2

1 , 2 , 14 , 15

24V GND

Y0.0 ～ Y5.7

6 … 13

1 8 … 25

HNC

- 21

/22

External supply 2 ： +24V

P ower of on - off signal

+24V

<15 m

+

-

P

ilot lamp, relay,etc

External supply +24V

External supply 24V GND

2.6.3

2.6.3 Direct

The external I/O signal can be directly connected to X S 10 , X S

Direct

Direct Connection

Connection

Connection to

to

NC

to

NC

to NC

NC device

device

11

, XS12, XS20, XS21,

or XS22 o f HNC-21 /22. It is widely used when I/O ports are less required and NC

device is installed in the control cabinet. This way of connection is simple and cost

effective . However, i t is not convenient to assemble or disassemble cables , and n o

PNP I/O terminals are available to use.

Figure 2 34 Connection between PLC input and NC unit

Figure 2 35 Connection between PLC output and NC unit

32

2. Connection

HNC - 21 /22

XS10

DB25/F

E - stop &

Overtravel

released

XS 11

DB25/ F

DC24V ≥ 50W

XS 12

DB25/ F

XS 20

DB25/ M

On-off outputs

P

P endant box

endant box

Cabinet

XS 21

DB25/ M

XS 22

DB25/ M

On-off input s

≤ 15 m

J1

J2

DB25/F

+24

GND

NC

N 0 ～ N 19

+24

GND

NC

P0 ～ P 19

Input terminal board

NPN

PNP

X0.0 ～ X2.3

≤ 15 m

J1

J2

DB25/F

+24

GND

NC

N0 ～ N 19

+24

GND

NC

P0 ～ P 19

Input terminal board

NPN

PNP

X2.4 ～ X4.7

≤ 15 m

J1

J2

DB25/F

+24

GND

NC

N0 ～ N 19

+24

GND

NC

P0 ～ P 19

I

nput terminal board

NPN

PNP

X5.0 ～ X7.3

≤ 15 m

J1

J2

DB25/ M

Output terminal board

+24

GND

NC

P0 ～ P 1 5

NC

ES1

OT1

+24

GND

NC

N0 ～ N 1 5

NC

ES3

OT2

NPN

PNP

Y0.0 ～ Y1.7

≤ 15 m

J1

J2

DB 25/ M

Output terminal board

+24

GND

NC

P0 ～ P 1 5

NC

ES1

OT1

+24

GND

NC

N0 ～ N 1 5

NC

ES3

OT2

NPN

PNP

Y2.0 ～ Y3.7

≤ 15 m

J1

J2

DB25/ M

Output terminal board

+24

GND

NC

P0 ～ P 1 5

NC

ES1

OT1

+24

GND

NC

N0 ～ N 1 5

NC

ES3

OT2

NPN

PNP

Y4.0 ～ Y5.7

External supply 2

On - off I/O power

+24V

GND

2.6.4

2.6.4 Co

Co

nnection

Co

nnection

Co nnection

nnection to

to

NC

to

NC

to NC

NC device

device

device through

through

through I/O

I/O

terminal

I/O

terminal

I/O terminal

terminal board

board

As it is shown in Fig ure 2-36 , XS10 , XS11 a nd XS1 2 of HNC-21/22 are connected to

J1 on the input terminal board, and X S20 , XS21 and XS2 2 are connected to J1 on

the output terminal board. NPN or PNP inputs/outputs are connected to J2 on the

terminal boards.

This way of connection is used when NC device and strong-current circuit are

installed in the different cabinets . I t is convenient for the circuit installation ,

commissioning and maintenance .

The relationship between J1 and J2 on the input terminal board is shown as below:

Figure 2 36 Connection to NC device through I/O terminal board

33

2. Connection

……

1

2

J1

1

2

3

……

24

25

24

25

≤ 15 m

XS10 ～ XS12 XS20 ～ XS2 2

HNC - 21 /22

Terminal board

……

Table 2 5 Relationship between J1 and J2 on the input terminal board

J1 DB25 PIN

J2 GND

24VG

(1,2,14,15)

NI0

(13)

N0 P0

NI1

(25)

N1 P1

…… NI18

……

N18 P18

NI19

(4)

(16) N19 P19

The relationship between J1 and J2 on the output terminal board is shown as below:

Table 2 6 Relationship between J1 and J2 on the input terminal board

J1DB25

J2 GND

24VG

(1,2,14,15)

NO0

(13)

N0 P0

NO1

(25)

N1

P1

…

NO14 … … …

NO15

(6)

(18) N14 P14

N15

P15

ESTOP1

(4)

ES1 ES3 OT1 OT2

ESTOP3

(17)

OTBS1

(3)

OTBS2

(16)

Each PLC input/output on terminal board contains both NPN and PNP terminal and

its LED to make the commissioning and fault detection easier.

The following figure shows the c onnection between J1 on I/O terminal board and

XS10, XS11, XS12, XS20, XS21 , and XS22 of HNC-21/22.

Figure 2 37 Connection between I/O terminal board and NC device

2.6.5

2.6.5 Description

Description

Description of

of

PLC

of

PLC

of PLC

PLC Address

Address

In NC system, PLC inputs are defined as X , and the PLC outputs are defined asY.

One byte is composed of 8 bits. For the information about I/O interface (XS10, XS11,

XS12, XS20, XS21, XS22) of HNC-21/22, please refer to the chapter 2.6.1 and

2.6.2.

The following table shows PLC inputs/outputs of HNC-21/22.

34

Table 2 7 PLC inputs/outputs of HNC-21/22

No. X/Y address Interface Descriptions

PLC inputs PLC inputs PLC inputs

two interfaces of X4.0~X4.7 are connected in parallel. PLC inputs inputs for the button at the first row of MCP

inputs for the button at the second row of MCP inputs for the button at the third row of MCP

1

2

X0.0 ～ X2.3

X2.4 ～ X4.7

X5.0 ～ X7.3 X30.0 ～ X31.6 X32.0 ～ X33.5 X34.0 ～ X35.6

XS10

XS11 , XS8

XS12

MCP

PLC outputs PLC out puts PLC outputs

two interface of Y3.4~Y3.7 are connected in parallel. PLC outputs

Spindle analog voltage outputs outputs for the pilot of button at the first row of MCP outputs for the pilot of button at the second row of MCP outputs for the pilot of button at the third row of MCP

1

2

3

Y0.0 ～ Y1.7

Y2.0 ～ Y3.7

Y4.0 ～ Y5.7 Y28.0 ～ Y29.7 Y30.0 ～ Y31.6 Y32.0 ～ Y33.5 Y34.0 ～ Y35.6

XS20

XS21 , XS8

XS22

XS9

MCP

2. Connection

35

2. Connection

14 : 24V G ND 15 : 24V G ND 16 : + 24V 17 : ESTOP3 18 : X4.7 19 : X4.5 20 : X4.3 21 : X4.1 22 : Y3.7 23 : Y3.5 24 : HA 25 : + 5V

1

13

14

25

1 : 24VG 2 : 24VG 3 : + 24V 4 : ESTOP2 5 : NC 6 : X4.6 7 : X4.4 8 : X4.2 9 : X4.0 10 : Y3.6 11 : Y3.4 12 : HB 13 : 5V G

XS8 （ DB25 PIN ）

2.7

Connection

2.7

Connection

2.7

2.7 Connection

Connection to

to

Handwheel

to

Handwheel

to Handwheel

Handwheel Unit

Unit

2.7.1

2.7.1 Handwheel

Handwheel unit is connected to HNC-21/22 by XS8 (DB25 pin).

Handwheel

Handwheel Interface

Signal Description +24V, 24V G ND P ower supply DC24V ESTOP2 , ESTOP3 Emergency stop on the handwheel unit X4.0 ~ X4.7 I nputs on the handwheel unit Y3.4 ~ Y3.7 O utputs on the handwheel unit HA P hase HB P hase B on the handwheel unit +5V , 5V G ND Handwheel power supply DC5V

Interface

Figure 2 38 Interface of XS8

Table 2 8 Interface description of XS8

A

on the handwheel unit

The inputs/outputs of axis selection, override selection, enab le button, and pilots of

handwheel unit are on X4.0

handwheel unit .

Notes:

Notes: If no handwheel unit is used or there is no emergency stop button on the

handwheel unit, pin 4 and pin 17 of XS8 shall be short circuited by DB25 male plug .

36

X4.7 ( 8 bits ) and Y3.4

～

Y3.7 ( 4 bits ) of XS8 on the

～

2. Connection

2.7.2

2.7.2 Connection

Connection

Connection to

to

Standard

to

Standard

to Standard

Standard Handwheel

Handwheel

Handwheel Unit

Unit

T he interface of standard handwheel unit provided by our company is DB25 pin,

which can be directly connected to XS8 on HNC-21/22 device. The following table

shows I/O interface for the handwheel unit on HNC-21/22.

Table 2 9 I/O interface for the handwheel unit on HNC-21/22

Pin Signal Description

13 5V GND 25 +5V 12 HB Phase B from MPG

24 HA Phase 11

23 Y3.5 Undefined (Reserved for the pilot of feed hold button) 10 Y3.6 P ilot lamp of handwheel unit 22 Y3.7 U ndefined

9 X4.0 Axis selection: X

21 X4.1 Axis selection: Y

8 X4.2 Axis selection: Z

20 X4.3 Axis selection: 4

7 X4.4 Override selection: X1

19 X4.5 Override selection: X10

6 X4.6 Override selection: X100

18 X4.7 Undefined

5 NC

17 ESTOP3

4 ESTOP2

3,16 +24V

1,2,14,15 24V G ND

Y3.4 Undefined （ Reserved for the pilot of cycle start button ）

Power supply DC5V for MPG on the handwheel unit

It

is

provided

It

is

provided

It

It is

is provided

provided by

A

P in of emergency stop (ESTOP) button on the handwheel unit

(Pin

4

and

(Pin

4

(Pin 4

4 and

is

provided

It

is

provided

It is

is provided

provided by

and

and 17

(Pin

Power supply DC24V for some modules of the handwheel unit

It

by

by HNC-21/22.

from MPG

17

should

17

should

17 should

should be

by

by HNC-21/22.

HNC-21/22.

be

short

be

short

be short

short circuited,

HNC-21/22.

circuited,

circuited, if

if

there

if

there

if there

there is

is

no

ESTOP

is

no

ESTOP

is no

no ESTOP

ESTOP button.)

button.)

If the handwheel unit is not used , pin 4 (ESTOP2) and pin 17 (ESTOP3)

of XS8 should be short circuited by DB25 male plug. Otherwise, the re

would be an alarm message caused by the non-working emergency stop

button on the machine control panel of NC unit . For more detailed

information, please refer to chapter 2.10.

37

2. Connection

24V G ND

ESTOP 2

+24V

H B

+5V

+5V GND

A

pi lot

Axis X

Axis Y

Axis Z

4th axis

X1

X10

X100

HNC - 21 /22

Handheld unit

XS 8

1 3 5VG

25 +5V

1 2 HB

24 HA

1 1 Y3.4

23 Y3 .5

1 0 Y3.6

22 Y3.7

9 X4.0

21 X4.1

8 X4.2

20 X4.3

7 X4.4

1 9 X4.5

6 X4.6

1 8 X4.7

5 NC

1 7 ESTOP3

4 ESTOP2

1 6 +24V

3 +24V

1 5 24V G ND

2 24V G ND

1 4 24V G ND

1 24V G ND

+5V

GND

A

B

MPG

ESTOP

X

Y

Z

4

X1

X10

X100

Axis

override

Enabled

pilot

ESTOP 2

PE

X P8

Figure 2 39 Connection to Standard Handwheel Unit

2.7.3

2.7.3 Connection

Connection

Connection to

to

Customized

to

Customized

to Customized

Customized Handwheel

Handwheel

Handwheel Unit

Unit

Please r efer to I/O design of the standard handwheel unit (such as axis selection,

override selection, and pilot lamps etc), while customizing a handwheel unit.

If there is no emergency stop button on the handwheel unit , pin 4

(ESTOP2) and pin 17 (ESTOP3) of XS8 should be short circuited by

DB25 male plug. Otherwise, there would be an alarm message caused

by the non-working emergency stop button on the machine control panel

of NC unit. For more detailed information, please refer to chapter 2.10 .

The type of I/O is NPN with DC24V. Please refer to section 2.6.

The specification of MPG (Manual Pulse Generator) is DC5V, TTL level,

phase-A output, and phase-B output.

38

2. Connection

15 : GND 14 : AOUT2 13 : 5VG 12 : +5V 11 : SZ - 10 : SB - 9 : SA -

8 : GND 7: GND 6 : AOUT1 5 : 5VG 4 : +5V 3 : SZ+ 2 : SB+ 1 : SA+

XS9 （ DB15 PIN ）

2.8

Connection

2.8

Connection

2.8

2.8 Connection

Connection to

Different kinds of spindle can be connected to HNC-21/22 by XS9 to implement CW

rotation, CCW rotation, spindle orientation, speed regulation etc. Spindle encoder

can also be connected to implement threading of turning and grid tapping of milling.

to

Spindle

to

Spindle

to Spindle

Spindle device

device

2.8.1

2.8.1 Relevant

2.8.1.1

2.8.1.1 Spindle

As it is shown in Figure 2-40, XS9 includes the spindle speed analog voltage outputs

and spindle encoder feedback inputs.

Relevant

Relevant Interfaces

Spindle

Spindle Interface

Signal Description SA+ , SA- Spindle encoder phase A SB+ , SB- Spindle encoder phase B SZ+ , SZ- Pulse Z of spindle encoder +5V , 5VG P ower supply: DC5V AOUT1 S AOUT2 GND

Interfaces

Interface

Interface XS9

XS9

Figure 2 40 Interface of XS9

Table 2 10 Description of XS9

pindle analog output: -10V~ +10V S pindle analog output: 0~ +10V A nalog output grounding

The characteristics of signals:

- Spindle speed analog voltage signal

V

oltage: AOUT1: -10V~+10V

AOUT2: 0V~+10V

L oad current: max.10mA

- Spindle encoder interface

39

2. Connection

P ower supply: +5V, max.200mA

Encoder signal: RS422 level

E nsure the type of spindle analog output interface, before it is connected

to the spindle frequency converter drive or spindle servo drive . If it is

-10 V ~ +10V, AOUT1 (pin 6) and GND should be used. If it is AOUT2 (pin

14) and GND should be used.

2.8.1.2

2.8.1.2 I/O

PLC inputs/outputs are required to control spindle start -up and stop , receive signals

about the various st atus and alarm messages, when the spindle device is connected

to NC unit .

The definitions of PLC inputs/outputs relevant to spindle control are listed as below,

which would be mentioned in the typical design (Chapter 5).

I/O

related to

S ignal

Spindle gear 1 X2.0 X2.0 Spindle gear 2 X2.1 X2.1 17 Spindle gear 3 X2.2 4 Spindle gear 4 X2.3 16 Spindle alarm X3.0 X3.0 Spindle speed arrived X3.1 X3.1 23 Zero spindle speed X3.2 10 S pindle orientation X3.3 22

System rest Y0.1 Y0.1 Spindle enable Y0.3 Y0.3 24 Spindle CW rotation Y1.0 Y1.0 9 Spindle CCW rotation Y1.1 Y1.1 21 Spindle mode switch/brake Y1.2 Y1.2 8 Spindle orientation Y1.3 20 Spindle gear 1 Y1.4 Y1.4 7 Spindle gear 2 Y1.5 Y1.5 19 Spindle gear 3 Y1.6 6 Spindle gear 4 Y1.7 18

to

Spindle

to

Spindle

to Spindle

Spindle

Table 2

11

I/O related to spindle control

Register X/Y

Milling Turning

Inputs

Outputs

Interface P in

XS10

XS11

XS20

5

11

25

2.8.2

2.8.2 Spindle

The spindle start and stop are controlled by PLC. The following table shows I/O

40

Spindle

Spindle Start

Start

Start and

and

Spindle

and

Spindle

and Spindle

Spindle Stop

Stop

2. Connection

related to spindle start and stop in the standard PLC of milling and turning.

Table 2 12 I/O related to spindle start and stop

Signal

Spindle speed arrived X3.1 X3.1 Zero spindle speed X3.2 10

Spindle enable Y0.3 Y0.3 Spindle CW rotation Y1.0 Y1.0 9 Spindle CCW rotation Y1.1 Y1.1 21

Y1.0 and Y1.1 are to control spindle CW/CCW rotation and stop. Usually, they are

set as on. If Y1.0 is on, the operator can control the spindle CW rotation. If Y1.1 is on,

the spindle CCW rotation can be controlled. If none of them is on, the spindle stops

rotation. Y1.0 and Y1.1 are used as the enable signal of spindle unit, when some

spindle frequency converter or spindle servo is used .

The direction of some spindle rotation depends on the polarity (positive/negative) of

Register X/Y

Milling Turning

Inputs

Outputs

Interface P in

XS11

XS20

23

24

spindle speed signal. I n this case, spindle CW signal can be used as spindle enable

control, and the spindle CCW signal is not used.

Some spindle unit contains spindle speed arrived and zero spindle speed, so that

they are used to monitor the spindle rotation by PLC.

Y0.3 can be used, when the individual spindle enable (enable control) is required.

2.8.3

2.8.3 Spindle

As it is shown in Table 2-4, AOUT is to control spindle revolution. The output range is

0V~+10V. Y0.2 and Y0.3 control the direction of spindle rotation.

Two analog outputs of XS9 are used to control the spindle speed in HNC-21/22 .

AOUT1( output range: - 10V ~ +10V) is used for spindle motors with drivers or

frequency converters with bipolar speed command input , and the enabl e signal is

used to control spindle start and stop. Another output, AOUT2 (output range: 0 ~ +10V)

Spindle

Spindle Speed

Speed

Speed Control

Control

is used for those driver units or frequency converters with unipolar speed command

41

2. Connection

input , and spindle CW and CCW rotation signals are used to control the spindle CW

and CCW rotation, respectively.

The corresponding spindle speed control signals in register are Y[28] and Y[29].

Y[28] is lower 8 bits, and Y[29] is higher 8 bits. In PLC program, the data from the

register are transferred to analog voltage signal by D/A circuit, and outputted through

pin 6, 7, 8, 14, and 15 of XS9 (pin 7, 8, and 15 are GND).

The correspondence between Y[ 28], Y[29] ( digital value) and analog voltage is

shown as below:

Table 2 13 Correspondence between outputs of digital value ( hex ) and analog voltage

Digital

Analog voltage

P in 6 -10V ~ 0V 0V ~ +10V

Pin 14 0V ~ +5V +5V ~ +10V

2.8.4

2.8.4 Spindle

There are three ways to control the spindle orientation .

1. Use a spindle motor with driver including spindle orientation function.

Spindle

Spindle Orientation

The relevant input/output signals were defined in standard milling machine PLC

program as listed below.

Signal Register X/Y (milling) Interface Pin

Spindle orientation done

Spindle orientation Y1.3 XS20 20

T he spindle orientation command is sent by PLC, i.e. Y1.3 is on. Then, X3.3 is

Orientation

Orientation Control

Table 2 14 I/O related to spindle orientation

-0x7FFF ~ 0x0000 ( -32767 ~ 0 )

Control

Inputs

X3.3 XS11 22

O utputs

0x0000 ~ 0x7FFF

( 0 ~ 32767 )

sent back after the spindle orientation is done.

2. Use a spindle servo, working in positioning mode .

T he spindle is controlled as the spindle servo. I t can be positioned at any angle

by writing PLC program.

42

3. Use the mechanic method .

Depending on the different situation, operators can define the related PLC I/O

by themselves and write PLC programs.

2. Connection

2.8.5

2.8.5 Spindle

Spindle gear can be controlled by PLC. The following table shows I/O related to

spindle gear control in the standard PLC of milling and turning.

When spindle frequency converter or spindle servo is employed, the value of spindle

speed command (analog voltage) should be set in PLC program depending on

different gears .

Spindle

Spindle Gear

Signal

Spindle gear 1 OK X2.0 X2.0 Spindle gear 2 OK X2.1 X2.1 17 Spindle gear 3 OK X2.2 4 Spindle gear 4 OK X2.3 16

Spindle gear 1 Y1.4 Y1.4 Spindle gear 2 Y1.5 Y1.5 19 Spindle gear 3 Y1.6 6 Spindle gear 4 Y1.7 18

Gear

Gear Control

Control

Table 2 15 I/O related to spindle gear control

Register X/Y

Milling Turning

Inputs

O utputs

Interface Pin

XS10

XS20

5

7

When the turning machine is at manual gear control mode, the current spindle gear

should be automatically set, by the actual spindle rotation from spindle encoder in

PLC program, to regulate the spindle speed command (analog voltage) .

As for automatic spindle gear control , please refer to PLC Programming Manual.

The

relevant

The

relevant

The

The relevant

relevant PLC

functions

functions .

2.8.6

2.8.6 Connection

The spindle encoder can be connected by XS9 to implement thread cutting, tapping

etc. Two types of output of spindle encoder can be connected: one type of output is

the difference TTL square-wave , and the other type of output is single-polar TTL

square-wave .

Connection

Connection to

PLC

PLC programs

.

programs

programs are

to

Spindle

to

Spindle

to Spindle

Spindle Encoder

are

required

are

required

are required

required to

Encoder

to

support

to

support

to support

support the

the

above

the

above

the above

above mentioned

mentioned

43

2. Connection

Contact power

HNC-21/22

XS20

U

V

W

O8

O9 Y1.

0 Y1.1

KA3

KA4 +24V

KM3

KM4

Contact power

U11

V11

W11 U1

V1

W1

S

pindle motor

RC1

Arc extinguisher

Generally , the difference encoder is recommended to ensure the reliability of

long-distance transmission and anti- interference ability . For the detailed connection,

please refer to Figure 2-44.

The specification of spindle encoder:

- P ower: +5V (within 200mA, use external power supply if it is higher than 200mA)

- TTL level output

- Difference outputs: A, B, Z

The co m monly used spindle encoder is: LEC- □ BM-G05D ( L, H )

2.8.7

2.8.7 Connection

If AC induction motor without regulation device is taken as spindle motor, the

auxiliary relay and contact are controlled by the outputs of NC device. T hen, the

spindle rotation (CW and CCW) and stop can be controlled. As it is shown in Figure

2-42, KA3 and KM3 are to control the motor CW rotation. KA4 and KM4 are to

control the motor CCW rotation.

Spindle gear can be added to implement step speed r egulation. An external spindle

encoder can be used to implement thread cutting or grid tapping .

Note:

Note: The single-phase arc-extinguisher of contact is not shown in the figure.

Connection

Connection Example

Example

Example ―

―

AC

―

― AC

Induction

AC

Induction

AC Induction

Induction Motor

Motor

Figure 2 41 Connection example — Three-phase AC Induction Motor

44

2. Connection

AOUT1

AOUT2

GND

HNC -21/22

XS

9

6

14

7 15

8

I/O

C

ontrol and st atus feedback

Such as spin dle C W/CCW rotation,

spin

dle speed arrived, alarm, etc.

XS 10 ～ XS1 2 ,XS20 ～ XS2 2

PE

Spindle motor

with drive unit

S peed control interface

-10～ +10 V or

0～+10V

S

peed

control

signal

10

～ +1 0V

0

～ +1 0V

SZ-

+5V

GND

11

4

12

5

13

SA+

SA-

SB+

SB-

SZ+

1

9

2 10

3

<15m

PE

2.8.8

2.8.8 Connection

Connection

Connection Example

Example

Example ―

―

Spindle

―

Spindle

― Spindle

Spindle motor

motor

motor with

with

with driver

driver

Generally, the servo drive includes AC frequency converter and spindle amplifier.

The non-step spindle regulation can be done within the reasonable range. AOUT on

XS9 is used to define the speed of spindle motor with driver. Spindle start and stop

(or CW and CCW rotation) can be controlled by I/O (XS20, XS21).

If AC frequency converter spindle is used, a mechanical gear can be used to get a

better low speed-torque and a broader speed regulation. For more detailed

information, please refer to chapter 2.8.5.

If the spindle amplifier is used, a broader speed regulation and a better low

speed-torque can be got.

Figure 2 42 Connection to spindle motor with driver – without feedback

As it is shown in Figure 2-44, the spindle speed/position information feedback from

the spindle motor with driver unit (Figure 2-43) or an external encoder (Figure 2-44)

to XS9 on NC unit can be used for thread cutting or tapping .

45

2. Connection

AOUT1

AOUT2

GND

HNC-21 /22

XS

9

6

14

7 15

8

I/O

C o ntrol a nd status feedback

Such as s pindl e CW /CCW rotation, spindle speed arrived, alarm, etc.

XS 1 0 ～ XS1 2 ,XS20 ～ XS2 2

PE

Spindle motor

with drivers

S

peed control interface

-10～ +

10V

or

0～+10V

S

peed

control

signa l

10

～ +

10V

0～+10V

SZ -

GND

11

4

12

5

13

SA+

SA -

SB+

SB -

SZ+

1

9

2 10

3

Z-

0V

A+

A-

B+

B-

Z+

SZ -

GND

SA+

SA -

SB+

SB -

SZ+

F

eedback

interface

<15m <15

m

PE

AOUT1

AOUT2

GND

HNC-21 /22

XS

9

6

14

7 15

8

I/O

C

ontrol and status feedback

Such as spindl e CW/ CCW rotation,

spindle speed a rrived, alarm, etc.

XS 10 ～ XS1 2 ,XS20 ～ XS2 2

PE

Spindle motor

with drivers

S

peed con trol in terface

-10～ + 10V

or

0

～ +1 0V

S

peed

control

signal

10

～ +1 0V

0

～ +1 0V

SZ-

+5V

GND

11

4

12

5

13

SA+

SA-

SB+

SB-

SZ+

1

9

2 10

3

Z-

+5V

0V

A+

A-

B+

B-

Z+

SZ -

+5V

GND

SA+

SA -

SB+

SB -

SZ+

S pindle

encoder

<15m <15m

PE

Figure 2 43 Connection to spindle motor with drivers - feedback from spindle motor

Figure 2 44 Connection to spindle motor with drive – feedback from external spindle

2.8.9

2.8.9 Parameters

Parameters

Parameters related

The parameters related to spindle device are in machine parameters:

Parameters Value S pindle encoder revolution 1024 D irection of spindle encoder ( 32 : positive, 33 : negative) 32/33

46

encoder

related to

to

Spindle

to

Spindle

to Spindle

Spindle device

device

2. Connection

47

2. Connection

15

:

DIR+

14

:

CP+

13

:

GND

12

:

+5V

11

:

Z -

10

:

B -

9

:

A -

8 :

DIR

-

7:

CP

- 6 :NC 5 :

GND

4 :

+5V 3 :Z+ 2 :B+ 1 :A+

XS30 ～ XS3

5

（ DB 15

）

2.9

Connection

2.9

Connection

2.9

2.9 Connection

Connection to

HNC- 21/22 units use the pulse axis control interface with pulse+direction,

bidirectional pulse, or hermite pulse, and feedback interface to control the servo

drive and step drive unit with pulse command.

to

Feed

to

Feed

to Feed

Feed Drive

Drive

2.9.1

2.9.1 Interface

There are six pulse axis interfaces (XS30~ XS3 5) on HNC-21/22.

(1) Signal Definition

Interface

Interface Description

Description

Figure 2 45 Interface of XS30~XS35

Table 2 16 Description of XS30~XS35 Signal Description A+, A- feedback signal of encoder phase A B+, B- feedback signal of encoder phase B Z+, Z- feedback signal of encoder pulse Z +24V, 24VG Power : DC 5 V CP+, CP- command pulse output (phase A) DIR+, DIR- command directional output (phase B)

(2) T echnical Specification

- Maximum pulse frequency: 800KHZ

- Power supply of encoder: +5V@150mA

- Encoder signal: RS422 level

(3) E quivalent circuit

- Pulse command output

48

2. Connection

VCC

CP(DIR

)

CP

- (

DIR-)

CP+(DIR+)

+5V

A+

(

B+ , Z+)

A(B , Z )

100

+

-

10K

A -

( B-, Z-)

XS30

XS2 0 ～ X S22

XS1 0 ～ X S12

Outputs (status information of dr iver)

Inputs (status in formation of d rive r )

XS31

XS32

XS33

HNC - 21/22

S

tepper motor

1

S tepp er d rive 1

M otor power

S

tepper motor

3

S tep per m otor 2

S te pper driv e 2

Motor power

Stepp er m otor 4

S tep per d rive 3

M otor power

S tepper drive 4

M ot or power

pulse

Figure 2 46 Equivalent circuit of pulse command output

- Encoder feedback Input

Figure 2 47 Equivalent circuit of encoder feedback input

(4) Pulse type

The type of pulse output (pulse+direction, bidirectional direction, and alternating

pulse) can be set by parameters. For more detailed information, please refer to

Chapter 3.

Table 2 17 Pulse Type

CP DIR

mode 1 pulse direction mode2 positive pulse negative pulse mode3 phase A phase B

2.9.2

2.9.2 Connection

Connection

Connection to

to

Stepper

to

Stepper

to Stepper

Stepper Motor

Motor

Motor Drive

Drive

Drive Unit

Unit

Up to six step motor drives can be connected to HNC-21/22 through XS30~XS35.

Figure 2-48 shows the overall connection to stepper motor drives. Figure 2- 49

shows an example of the connection to SH-50806A (five phases step motor)

49

2. Connection

CP+

CP -

DIR+

HNC - 21/22

XS 30 — XS35

14

7

15

CNI/F

Steppe r drive unit

3

4

5

CW+

CW-

CCW+

Shielding

D rive transformer

AC 1P

380/ 80

M otor power

D rive power

S tepper motor

DIR -

8

6

CCW -

AC80 AC80

A + A - B+ B - C+ C - D+ D - E+ E - FG

SH-50806A

13

GND

CP+

CP -

DIR+

-

21 /22

XS

30

～ XS35

14

7

15

CNI/F

Stepper drive

unit

3

4

5

CW +

CW -

CCW+

Shielding

D rive

transformer

AC 1P

380/80

M otor power

Encoder feedback

D r ive power

S tepper

motor

DIR-

A+

A

-

8

1 9

6

CCW-

B+

B

-

Z+

2 10

3 Z

-

+5V

11 12

AC80 AC80

A + A - B+ B - C+ C - D+ D - E+ E -

FG

SH-50806A

+5V

4

GND

5 GND

1

3

O ptical encoder

Shie lding

SH - 50806A

Figure 2 48 Overall connection to stepper motor drive

Figure 2 49 Connection to SH-50806A (five-phase stepper drive unit)

If it is required, an external encoder is used to be a closed loop to prevent the

step-out of stepper motor.

If I/O signals are used in stepper drive unit, the detailed connection can be referred

to the relevant manual of drive unit. I f DC24V is an independent power supply, it

shall be grounded with DC power of I/O. An auxiliary relay is required if I/O interfaces

of step motor drives and NC unit’s are not matched.

When using stepper drive unit, the related parameters are shown as below (for

detailed information, please refer to Chapter 3 and Chapter 4).

50

Figure 2 50 the closed loop between NC unit and stepper drive unit

- Servo parameters

XS30

XS20～ XS22

XS10～ XS12

Output s (se rvo contr ol signal , axi s br ake c ontrol)

Inputs (

S ta tus infor matio n of serv o )

XS31

XS32

XS33

HNC - 21/22

S

ervo motor

1

S

ervo drive

1

M otor power

E ncoder

feedback

Servo motor

3

S ervo driv e 3

Motor power

E ncoder

feedback

S

ervo

motor 2

S

ervo driv e 2

M otor power

Encoder

feedback

S erv o mo tor

4

Servo dr ive

4

M otor power

E ncoder

feedback

P ulse

P osition feedback

P ulse

P osition

Position

2. Connection

Parameters

Parameters Value

Value

Servo Type (45: with feedback, 46: without feedback) 46 Stepper motor pulses ≥ 4 Stepper motor (1: yes, 0:no) * 1

- Machine parameters

Parameters

Parameters Value

Value

Pulse output (0: uni-direction; 1: bi-direction; 2: p hase AB) 0 /1/2

2.9.3

2.9.3 Connection

Connection

Connection to

to

Servo

to

Servo

to Servo

Servo with

with

with pulse

pulse

pulse command

command

Up to six servos can be connected to HNC-21/22 through pulse interface of

XS30~XS35. Figure 2-51 is the overall connection between NC device and servo

with pulse command. Figure 2-52 and 2-53 are the two examples of connection to

servo with pulse command.

Figure 2 51 Overall connection between NC device and Servo with pulse command

The following list is the basic conceptions related to servo with pulse command:

1. Position closed loop is constructed within servo driver rather than NC device .

2. Position feedback signals of pulse interfaces are only used for position

monitoring, not for position closed loop .

3.

To

construct fully closed loop control, a servo driver with fully closed loop

51

2. Connection

CP+

CP -

DIR+

HNC-21 /22

XS 30～XS35

14

7

15

CNI/F

Servo drive unit

3

4

5

PULS+

PULS-

SIGN+

Shielding

DC24V

Inputs

XS 1 0 ～ XS 12

Servo

transformer

AC 3P

380/200

M otor power

E

ncoder

feedback

Servo power

S ervo motor

DIR-

A+ A-

8

1

9

6

21

22

SIGN-

OA+

OA -

B+

B-

Z+

2

10

3

48

49

23

OB+

OB -

OZ+ Z-

GND

11

13

24

13

OZ -

GND

S ervo control power

L1 L2 L3

r t

U V W

PE

CN SIG

7 8

9

29

34

35

36

37

41

COM+

CCWL

SRV - ON

SRV-RDY+

ALM+

ALM -

COM -

SRV-RDY

-

CWL

25

+24V

24V GND

E nab led

relay

Panasoni c

MSDA10

3D 1A

Panasonic

MS

M A10

2D

1 C

≤ 15 m

*

Notes

interface is necessary .

4. For the parameters of s ervo dri ve unit, please r efer to the related manuals of the

servo driver .

Notes:

Signal ready (SRV-RDY -, SRV-RDY+) and signal alarm (ALM-, ALM+) are closed,

when the drive unit is working normally. I f the signal is the relay terminal output in the

drive unit, the same kind of signals of several drive units are connected in series.

Then, it only takes one bit of PLC input.

For the treatment about “ fault chain ” during the connection of servo drive unit, please

refer to chapter 5.2.4.4.

52

Figure 2 52 Connection to Panasonic MINASA

2. Connection

CP+

CP -

DIR+

HNC-21 /22

XS 30～XS35

14

7

15

1CN

Servo drive unit

7

8

11

PULSE

*PULSE

SIGN

Shielding

DC24V

Inputs

XS 1 0 ～ XS 12

S ervo

transformer

AC 3P

380/200

M otor power

E ncoder

feedback

S ervo power

S ervo motor

DIR-

A+

A-

8

1

9

12

33

34

* SIGN

PAO

*PAO

B+

B-

Z+

2

10

3

35

36

19

PBO

*PBO

PCO

Z-

GND

11

13

20

1

*PCO

SG

R S T

PE

r t

U V W

PE

2CN

47

42

43

40

30

29

32

31

+24V N- OT S- ON

SRV-RDY+

ALM+

ALM -

SRV-RDY

-

P

- OT

50

+24V

24V GND

E nabl ed relay

Yasuka wa

SGDB-30ADG

Yasukawa SGMG

- 30A2 ABG

18NM

no keys

≤ 15 m

* Note

Servo rea dy

S er

vo alarm

S ervo con tr ol power

Figure 2 53 Connection to Yasukawa SGDB

The parameters related to servo drive unit are shown as below (for more detailed

information, please refer to Chapter 3 and Chapter 4).

-

Servo

-

Servo

-

- Servo

Servo parameters

parameters

Parameters

Parameters Value

Value

Servo Type (45: with feedback, 46: without feedback) 45 Motor revolution 2500 Stepper motor pulses 0 E-gear(NC) 1 E-gear(Servo) -1 Stepper motor (1: yes, 0:no) 0

-

Machine

-

Machine

-

- Machine

Machine parameters

Parameters

Parameters Value

parameters

Value

Pulse output (0: uni-direction; 1: bi-direction; 2: p hase AB) 0 /1/2

53

2. Connection

2.10

2.10 Design

There is an E-stop (emergency stop) button on both machine control panel of

HNC-21/22 and handwheel unit.

- I t is used to s top NC machine immediately or turn off the main supply of power

- E-stop button shall be pressed, if there is an alarm message. Do not release

There is an overtravel released button on the control panel of HNC-21/22. It is used

to release the overtravel, if the overtravel limit switch is pressed.

No. Signal S ignal description Interface P in I nterface

Design

Design of

devices (such as servo drivers), if there is an emergency .

E-stop button until the alarm has been fixed. This E-stop button and one

normally open contact of auxiliary relay controlled by related circuits should be

connected to the inputs of HNC-21/22, so that the system reset signal can be

used.

Table 2 18 Signals related to E-stop and overtravel released.

of

E-Stop

of

E-Stop

of E-Stop

E-Stop and

and

and Overtravel

Overtravel

Overtravel Released

Released

description

I nterface

type

1 ESTOP2

2 ESTOP3

3 ESTOP1 4

4 OTBS1

5 OTBS2 16

It is recommended to use the design of the internal and external circuit (Figure 2-54).

In the following figure, t he bold lines show the emergency stop circuit, while the thin

lines are the overtravel rel eased circuit. KA is a n auxiliary rela

supply for servo , spindle etc . It is suggested that one of the normally open contacts

of KA is connected to PLC input of PLC to produce an external operation enabl e

signal.

E-Stop loop terminal

O vertravel Released terminal

XS8

XS20

4

17

3

Handwheel

unit

Y0.0 ~ Y1.7

outputs

y,

controlling the power

DB25

54

2. Connection

XS 20

4

17

ESTOP3

ESTOP2

HNC - 21 /22

H andheld unit

XS8

4

17

E-stop button

ESTOP3

ESTOP1

E - stop button

3

16

OTBS2

OTBS1

O

vertravel released

button

24V GND

+24V

Axis1

+

Overtravel limit switch

Axis1 - Ov ertr avel limi t switch

Axis 2+ Overtravel limi t swi tch

Axis 2 - Overtravel limit switch

Axis 3+

Overtra

vel limit switch

Axis 3 - Overtravel limit switch

Axis 4+ Overtravel limit switch

Axis 4 - Overtravel limit switch

KA

Figure 2 54 Recommended connection to E-stop and Overtravel released signal

Except for the emergency stop button from the machine control panel and

handwheel unit, more than one E-stop button can be used if necessary. The

normally closed contacts of each emergency stop button are connected to the

emergency stop circuit in series . Generally, E-stop b uttons are released and its

contacts are closed . While E-stop button is pressed, the contacts are open and the

auxiliary relay (KA) controlled by the emergency stop circuit is turned off. The power

supply of motion components (such as feed motor, spindle motor, tool

magazine/turret motor etc.) is turned off. Meanwhile, a group of normally open

contacts of the auxiliary relay (KA) connected at PLC input send the alarm signal of

emergency stop. This signal is taken as the system reset signal, when the

emergency stop button is on.

In the system, t he normally closed contacts of the positive/negative overtravel limit

switch on each axis are connected to the overtravel loop of NC device in series .

Meanwhile, one normally open contact from each overtravel limit switch is

connected to PLC input. Then, the status of each overtravel limit switch can be

monitored. Generally, the overtravel limit switch is released. If the overtravel limit

switch is pressed by the operator, its normally closed contacts are off, and the

overtravel circuit of NC device is disconnected. Meanwhile, the auxiliary relay (KA)

55

2. Connection

of emergency stop circuit is turned off, and the power supply of motion components

is off automatically. The normally open contacts of the overtravel limit switch

connected at PLC input send the overtravel alarm signal to the system (the relevant

axis and the direction of overtravel). And the pilot lamp on the overtravel released

button is on.

If there is an overtravel, same as the emergency stop alarm, the auxiliary relay (KA)

is powered off, and one group of normally open contacts from the auxiliary relay (KA)

would send the emergency alarm signal through PLC inputs. PLC cannot monitor

the normally open contacts of the auxiliary relay (KA), but also the status of normally

open contacts of every overtravel limit switch. Thus, the emergency alarm and the

overtravel alarm can be distinguished.

When the overtravel occurs, NC device are stopped and the system shows the

alarm message.

To

release the overtravel, the following steps can be done:

1) P ress the overtravel released button to reset system. Do not release this button

until the overtravel is released.

2) Press the axis key with the correct direction to release the overtravel limit switch.

Then, the pilot lamp on the overtravel released button is off.

3) Release the button.

Suggestion for design:

PLC programs are required to implement the above mentioned contents such as

system r eset signal, turning on and off the pilot lamp of overtravel rel eased button,

and checking the overtravel axis and its direction. For more detailed information,

please r efer to PLC Design Manual.

When the operator is writing PLC program s, please ensure that the axis would not

move if the overtravel is re leased in the wrong direction . The axis m oves only when

its overtravel is re lease d in the correct direction . O therwise , a serious damage to the

ballscrew w ould happen. For more detailed information, please refer to PLC Design

Manual.

56

2. Connection

2.11

2.11 Design

NC device shall be accorded with the requirement of electromagnetic compatibility in

JB/T 8832-200 1 ( General requirements for numerical control systems of machine

tools ).

Electromagnetic Compatibility (EMC) refers to

- EMI ( electromagnetic interference ) level of electrical equipments sh all not be

- T he anti-interference ability of device shall be strong enough to e nsure working

2.11.1

2.11.1 EMC

EMC of NC device contains four elements:

- Voltage interruption and Temporary downwards voltage

Design

Design of

higher than the permitted level in the expected working environment .

normally in the expected working environment .

EMC

EMC of

NC system can work even if one of the following situations happens: AC power

of

Electromagnetic

of

Electromagnetic

of Electromagnetic

Electromagnetic Compatibility

of

NC

of

of NC

Device

NC

Device

NC Device

Device

Compatibility

supply is interrupted for the half of cycle during any cycle; the time of voltage

dr opping is not more than one cycle, and the value is decreased to 40% rating.

- Anti-interference test with high-speed transient pulses

a) NC system can work, even if the peak of voltage pulses of 2KV and the

repetition rate of 5KHz are set between its AC power supply terminal and

the protection grounding.

b) NC system can work, even if the peak of voltage pulses of 1KV and the

repetition rate of 5 KHz are appended to I/O signal cables, data cables and

control cables through coupling clips.

- Anti-interference test with surge voltage

NC system can work even if a surge voltage of 10KV has been appended to AC

power supply, or a surge voltage of 2KV is overlapped across AC supply ground

terminal.

- A nti-interference test with static discharge

NC system can work, even if the touch discharge voltage of 6KV or the air

discharge voltage of 8KV is imposed where the operators often touch.

57

2. Connection

2.11.2

2.11.2 Grounding

There are three kinds of grounding: protection grounding (safety grounding), working

grounding (working grounding), shield grounding (shield grounding).

2.11.2.1

2.11.2.1 Safety

To

prevent persons and equipments from thunderstroke, electrical leakage, and

static discharge, a ground, called protection ground, is connected to case or chassis.

It should be connected firmly with the real earth. F or the basic requirements of

protection ground , please r efer to Section 8.2 in “ GB5226.1-2008 (Electrical safety

of machinery-Electrical equipment of machines-Part 1: General requirements) ” .

- G rounding type of TT (Figure 2-55) or TN-S (Figure 2-56) is recommended for

machine tool NC systems. TN-C type (Figure 2-57) is not allowed to use.

Grounding

Safety

Safety Grounding

Grounding

L1 L2 L3 PE

Supply ground

Operator ’ s electric unit

Ground of electric unit

T T

The outer conductive part of electrical equipment is connected to ground directly. This ground is independent from the supply ground .

One point of the supply is connected to ground directly.

Figure 2 55 TT type

58

Device in

electric unit

Case or other

conductive part

Operator ’ s electric unit

Ground of electric unit

Device in

electric unit

2. Connection

L1 L2 L3 N PE

Supply ground

T N-S

One point of the supply is connected to ground directly .

Operator ’ s electric unit

The neutral is separate from the protection earth (PE) .

The outer conductive part of electrical equipment is connected to supply ground directly.

Case or other

conductive part

Figure 2 56 TN-S type

Device in

electric unit

Supply ground

Operator ’ s electric unit

Case or other

conductive part

Operator ’ s electric unit

L1 L2 L3 PEN

Grounding

Operator ’ s electric unit

Note

Note :

The neutral and the protection earth (PE) are combined.

T N- C

The outer conductive part of electrical equipment is connected to supply ground directly.

One point of the supply is connected to ground directly .

Figure 2 57 TN-C type

:

It would be better not to lay a neutral in control cabinet. If it is used , identify the neutral distinctively by N in installation diagrams, in schematic diagrams, and on terminal boards . It is not allowed to either co nnect neutral to ground within the control cabinet or use a common terminal PEN ( it refers to the terminal connecting neutral N to protection earth PE) .

59

2. Connection

PE

Grounding

bus

X-axis

motor

Control cabinet

Servo supply

源

Servo driver X

Servo driver Y

Servo drive Z

Supply Transducer

Y

- axis

motor

Z

- axis

motor

Spindle

motor

- Essentials of safety grounding design

a) P rotection ground terminals shall be used in electric unit. It can be marked

as or yellow-green double-colored sign. It is not allowed to r eplac e the

protection ground terminal with a screwed joint on outer case or chassis .

b) T he protection ground terminal shall be connected to case, chassis etc . The

continuity of protection ground circuit sh all be met the criterion of

GB5226.1-2008 Section 8.2.

c)

A

ground ing bus ( the recommended thickness ≥ 3mm copper bar) shall be

connected to earth . T he grounding resistance must be less than 4 Ω .

d) As it is shown in Figure 2-58, the protection ground terminals of electric unit

should be connect ed to the ground bus with the shortest and thickest

yellow-green double-colored wires.

Figure 2 58 Example of Protection Ground

e) Do not loop the protection ground wire . Figure 2-59 and Figure 2-60 show

the correct connection of safety grounding and the wrong connection of

safety grounding, respectively.

60

2. Connection

1 2 3

Grounding

bus

Figure 2 59 Correction connection of protection ground

1 2 3

Grounding

bus

Figure 2 60 Wrong connection of protection ground

1 2 3

Grounding

bus

Grounding

Servo drive

(Transducer)

bus

Servo drive

(Transducer)

M

Grounding

bus

M

f) C onnecting the outer case to earth is the most effective measure to restrain

the static discharge interference. In case of discharging, the current flows

along outer case to earth directly, and the internal circuits would not be

affected.

g) Connecting the case to earth plays a role of shielding to reduce the

electromagnetic interference among equipments .

2.11.2.2

2.11.2.2 Working

Working

Working Grounding

Grounding

It refers to the reference potential (0V) for electrical signals. The working ground

shall be connected correctly. Otherwise, it would even produce the interference,

such as common ground reluctance interference, ground loop interference,

common-mode current radiation, etc . There are four modes of working grounding:

floating grounding, single-point grounding, multi-point grounding, and mixed

grounding .

- Floating grounding

As it is shown in Figure 2-61, the working ground is insulated from metal case. It

is floated to protect i nternal circuits from external common-mode interference .

61

2. Connection

case

Working ground Metallic cover

Protection ground

Shielding ground

1

2

3

1

2

3

Noise ground

Digital ground

1

2 3 1 2

3

1 2

3 1 2

3

Analog ground

Metallic ground

(a) Single - point series (b) Single - point parallel

( c) Single - point mi xed

Figure 2 61 Floating Grounding

- Single-point grounding

Only one physical point is defined as reference ground in single-point grounding.

All other points in the circuit or equipment, which need to be grounded, are

connected to this point . If a system includes many devices, the ground of each

device is independent. The in ternal circuit of every device has its own

single-point ground. Then, the grounds of every device in this system are

connected to the unique r eference point of the system . There are three types of

single-point grounding : series, parallel, and mixed .

Figure 2 62 Single-point Grounding

Single-point grounding is simple and easy to install, and its wiring is similar to

circuit diagram. The drawback is its long ground wire. When system frequency is

rather high, the ground reluctance increases, and the common ground

reluctance interference is produced . Meanwhile , the high frequency

tremendously increases the mutual interference among two grounds, or between

the ground and other wires, induced by capacitive or inductive coupling .

- Multi-point grounding

62

2. Connection

Connecting all the grounding points of equipment (or a system) directly to the

nearest grounding plane is referred to as multi-point grounding. It makes ground

wires as short as possible. The equipment chassis, the special ground wire, or

even the frame of the equipment may be taken as the grounding plane .

2 4

1

Figure 2 63 Multi-point Grounding

3

Multi-point grounding is simple to install, and it greatly reduces the

high-frequency stationary wave phenomena appeared in grounding wires.

However, it requires more maintenance on t he wire in grounding loops of

multi-point grounding system. Some factors such as erosion, shock, and

temperature variation would increase the system reluctance and decrease the

grounding effect iveness.

- M ixed grounding

Based on the analysis of system, connect the points which require the nearest

ground ing (or high frequency grounding through by-pass capacitors ) , directly to

the grounding plane. The single-point grounding is used to the rest of points.

- Essentials of working grounding design

a) Do not make any closed loop while designing the ground, because the

closed loop would induce an electromagnetic force (EMF) by the effect of

the external electromagnetic field , and then a current is produced . The

voltage drop of this current on the ground reluctance may result in the

common-reluctance .

b) The isolation measures, such as optoelectrical coupling, isolation

transformer, relay, and common-mode choke, are recommended to cut off

the grounding loops among devices or circuits, and to check the

common-reluctance coupling interference induced by the grounding loops .

c) Each circuit in the equipment, such as analogue circuit, digital circuit, main

circuit, interference circuit etc., sh all be equipped with its own ground

(sub - ground), and connected to the general ground finally .

d) Generally, the l ow frequency circuits (f<1MHz) use dendriform emanant

63

2. Connection

single-point grounding. The length of ground wire sh all not be longer than

one twentieth of the wave length of high frequency current of the ground

wire (i.e. λ =c/f, 1< λ <20, c : light speed). For the longer ground, it needs to

make their reluctance, especially inductance, as low as possible, for

example, increase the width of ground wires, use conductors having

rectangular cross section instead of round one as the ground wires, etc .

e) Generally, the h igh frequency circuits (f>1MHz) use multi-point grounding or

mixed grounding. For example, the circuit boards and chassis of industrial

control computer often use multi-point grounding .

f) The floating grounding (working ground is insulated from the metal case) is

only suitable for the small -scale equipments ( the distribution of capacity

between circuits and the case is small ) or the low speed circuits (its

frequency is low) . For the large-scale equipments with complex circuits and

higher frequency, the floating grounding is not used.

g) In case there are a few electrical devices (or electrical units) equipped in the

control cabinet, the working ground, the protection ground, and the shielding

ground are connected to the central ground of the cabinet (grounding bus) .

T hen , they are connected to the earth to keep the cabinet, the devices, the

case, the shield, and working ground at the same potential level .

2.11.2.3

2.11.2.3 Shield

To

check the interference, the shields of cables and transformers should be

grounded. The relevant ground wires are called shield ground wires . In a network

with low-reluctance, conductors with low-resistance are used to reduce interferences.

Therefore, the low-reluctance network (such as the case or the grounding board) is

often taken as the reference level of high-frequency signals in electrical equipments.

These points are labeled with symbol . The connection of common reference

potential point sh all be taken at an independent point as close as possible to PE

terminal and connected directly to ground or to its own external (no interference)

earth. The terminals labeled with are generally treated as shield grounds .

Shield

Shield Grounding

Grounding

- Essentials of shield grounding design

64

2. Connection

US

Step

per Motor

controller

（ NC device ）

24V DC

(+) (

- )

Step Motor

Drive

CP +

CP -

DIR+

DIR

-

a) For the l ow-frequency circuits (f<1MHz) , it is usually single- ended ground ing .

The shielded cables sh all be single- ended grounded . The single- ended

grounding plays the role of both active and passive shielding against

electrical fields. However, no shielding role against magnetic fields exists .

(a) grounding at input end (b) grounding at output end

Figure 2 64 Shield grounding for low-frequency circuits

b) Single-point grounding is used , when the cable length L<0.15 λ (where λ =c/f).

In the power supply or load circuits, no matter what single-core or

multiple-core shielded cable, is connected to the ground at one end, and the

other end is insulated from the ground. The grounding point is the shield

ground. The best way of grounding the shielded cables is the grounding at

output end without a loop. Grounding at the input end can also work .

Figure 2 65 Example of single-point shield grounding

c) For the h igh-frequency circuits (f>1MHz) , it usually uses the double-ended

ground ing. T he shield of shielded cables sh all be double-ended grounded.

Double-ended grounding plays the role of shielding against both electric

fields and high-frequency magnetic fields. The shield of shielded power

cables sh all also be double-ended grounded .

65

2. Connection

Metallic case

Noise

filter

Frequency converter

Noise

filter

M

>30cm

Signal line

Controller

Figure 2 66 Double-ended grounding of shielded cable

Servo d river

A A B B Z Z

Servo motor

S

Optical encoder

Figure 2 67 Double-ended grounding for encoder cables

d) When the cable length L>0.15 λ ( λ =c/f), the multi-point grounding shall be

used. Grounding the cable shield at intervals of 0.05 λ or 0.1 λ is

recommended (at least to ground both ends of the shield) to decrease the

ground reluctance and reduce the interfere nce induced by ground potential .

e) It is recommended to use shielded twisted pair to transmit signals between

NC device and servo drivers or frequency converter. In this case,

double-ended grounding is used.

f) The shield of input signal cables sh all be grounded just where it enters the

device case . And the external interference signal is directly grounded to the

entrance of device case , rather than be grounded within the case to let it

rush into the device .

g) For the circuit with high input or output reluctance, especially in the

environment with the high static voltage, the double shielded cables can be

used. In this case, the in ternal shield is grounded at the source end, and the

external shield is grounded at the load end .

h) Avoid the so called “ pigtail ” effect w hile grounding the shield.

To

shield of multiple-core cables, the special metal clips are used .

66

ground the

2. Connection

2.11.3

2.11.3 Check

A

good environment of power network is one of the key points to ensure safe and

reliable work to equipments. There are three measures commonly used to check the

network interference .

2.11.3.1

2.11.3.1 Supply

The supply filter can check the network interference from coming into the equipment .

It can also check the interference of equipment from pollut ing the network .

- Essentials of supply filter design

1) The filter is installed where AC supply lines enter the cabinet. Do not make

2) In case the supply lines must be connected to the filter through fuses and

3) It is better to fix and connect the metal case of the filter directly onto the

Check

Check Interference

Supply

Supply Filter

the long distance of connection between AC supply lines and supply filter ,

which is to check the radiating interference from cabinet.

switches , the wires sh all be shielded .

Interference

Interference from

Filter

from

from Power

Power

Power Network

Network

metal cabinet, being as close as possible to the ground point on the cabinet .

4) The input and output lines of the filter sh all be laid separately. Do not lay

them in parallel, especially not bundle up them together . Otherwise, the

interference from the input lines would be directly coupled to the output lines

without through the filter.

5) Use the double-twisted wires for the filter output wires t o strengthen the

anti-interference ability .

6) In case there is much high voltage pulse interference in the power network,

the filter having better attenuation in a broader frequency band or connecting

to the ferrite ring filter in series is recommended to obtain better filtering

effect .

7) The current through the filter sh all not be more than its maximum rating.

Otherwise , the inductance will decrease much and the filter will not effect,

because of the saturation in magnetic cores .

67

2. Connection

2.11.3.2

2.11.3.2 A

A

bsorbent

A

bsorbent

A bsorbent

bsorbent F

F

ilter

F

ilter

F ilter

ilter

Absorbent filter can check the inference of rapid transient pulse s series in the

transmission lines . It is made of the energy consumption component . The ferrite

absorbent filter is commonly used. It absorb s the interference energy in a given

frequency band and converts to heat loss to make the filtering effect .

- Essentials of interference filter made of ferrite rings design

1) The cables sh all be nestled closely to the inner wall of the ring (no large gap

is allowed) to concentrate the most possible magnetic flux within the ring

body . Thus, the filtering effect is improved.

2) Let both AC and DC supply lines pass through the ferrite rings to check the

interference of rapid transient pulse series .

3) Pass the wire s through the ferrite rings with the same direction and same

turns. The more the turns are , the better the filtering effect is . Generally, 4~5

turns are taken at the input side of power equipments (servo drivers or

frequency converters) . If the wires are quite thick, then more than two ferrite

rings can be used, the total turns is 4~5. However, the turns at output side

shall be less than 4.

5 turns 4 turns

L

1

L

2

L

3

PE

Ground bus

Figure 2 68 Filter circuit for servo driver or frequency converter

Note:

Note: In Figure 2-68, the s upply filter sh all be only put at the input side of

Supply filter

L

U

1

L

V

2

L

W

3

Servo driver

(Transducer)

M

servo driver (or frequency converter ), instead of its output side. The ground

wire can also not be turned through the ring. I n some cases , the ground wire

not passing through the ring makes the effect of filtering better.

68

2. Connection

2 turns

L

1

L

2

L

3

P E

2 turns

Servo Driver

L

1

L

(Frequency converter )

2

L

3

Figure 2 69 Two magnetic rings connected in series

4) EMC filter, constructed by connecting the magnetic ring and the supply filter

in series, possesses better filtering effect .

5) While using the magnetic ring to check the common-mode interference in DC

supply and signal wires, it is better to pass either the positive and negative

lines or signals through the ring. Then, t he ring is not easy to be saturated .

Magnetic ring

+

-

DC supply

Device

-

DC supply

+

Device

-

(a) checking common-mode interference (b) checking difference -mode interference

Figure 2 70 Filtering circuit for DC supply

6) If the load reluctance using the magnetic ring or magnet ring is high, then the

magnetic ring will not be effective. The reason is that the reluctance of the

ring is only hundreds of ohm when the frequency is hundreds of mega - Hz.

Therefore, the ring is suitable for the circuits with low reluctance. Adding

capacitors in parallel after the ring to construct a filter similar to L-C type

would decrease the load reluctance much to improve the filtering effect .

L

1

L

2

L

3

Figure 2 71

A

typical circuit to check the transient pulse interference for AC supply

69

2. Connection

(a) simple isolation transformer

(b) isolation transformer with shield (c) super (m ultilayer) isolation transfo rmer

Pri mary

Sec ondary

case

Pri mary

Sec ondary

Pri mary

2.11.3.3

2.11.3.3 I

I

solation

I

solation

I solation

solation

T

ransformer

T

ransformer

T

ransformer

The isolation transformer, a commonly used device to check the interference from

supply, acts basically the role of implementing the electrical isolation between

circuits. It prevents equipments from being disturbed by currents flowing in ground

loops. It reduces the common-mode interference to a certain extent. It works well in

check ing the transient pulse series and the thunderstroke surge interferences

Generally, t here are three types of isolation transformers: simple isolation

transformer, isolation transformer with shield, and super (multilayer) isolation

transformer .

- Essentials of isolation transformer design

1) The isolation transformer with shield is widely used. The supper isolation

transformer is used only under special conditions .

2) Shield sh all be grounded directly and with short and thick connection wires.

Otherwise, it won ’ t work well in check ing the high frequency common-mode

interference .

3) Separate the primary and secondary wires of isolation transformer . Do not

lay them in parallel, especially not bundle up them together. It is better to use

double-twisted wire for the secondary output line to improve the ability of

anti-interference from magnetic fields .

70

Figure 2 72 Isolation Transformer

2. Connection

4) The isolation transformer works quite well in check ing the high-voltage pulse

surged by the thunderstroke. With an additional surge blocked device, the

AC supply transformer works as an anti-thunderstroke transformer .

5)

A

collocation of isolation transformer and magnetic rings checks effectively

the interference induced by high speed transient pulse series .

Lightening rod

Input

Surge absorber

Static shield

C

Output

Figure 2 73 Anti-thunderstroke T ransformer

In Fig ure 2 -73 , the lightening rod is a gas discharge tube . The surge absorber is a

voltage sensitive resistance. The transformer with shield and capacitance at its

secondary side can check the remaining common-mode interference in surging.

As for the under-voltage, overvoltage, and voltage undulation of the power network

during a quite long period, an AC voltage stabilizer shall be used to provide the

supply for NC device.

L1 L2 L3 N

AC

voltage

stabilizer

PE

Machine tool

NC system

Other equipment s s

Figure 2 74 AC Voltage Stabilizer

71

2. Connection

2.11.4

2.11.4 Anti-Interference

There are many ways to prevent signals from interference. Laying the power lines

and the signal wires separately, selecting proper grounding type, employing required

wires etc., are the common and effective ways to prevent signals from interference.

In addition, some methods depended on signal type may also be us ed. The ways to

check interference for both analogue and digital signals are introduced below .

2.11.4.1

2.11.4.1 Check

1. Because of being apt to be disturbed, the analog signal wires sh all have been

shielded and be laid as shortly as possible .

Anti-Interference

Check

Check Interference

Speed regulation

Interference

Interference in

in

Analog

in

Analog

in Analog

Analog Signals

Signals

Frequency

converter

(the common end of analogue signals ）

No connection to earth (floating potential)

Figure 2 75 Speed Regulation of Frequency converter

2. While servo drive or frequency converter is connected to the device with analog

output ( NC device ) , there would be a wrong action caused by the interference

from the device with analog output, the servo drive, or frequency converter. In

this case, the capacitors with ferrite rings can be connected to the device with

external analog output signal to check the interference .

Passing or winding 2-3 turns in the same direction

Servo driver

NC device

Figure 2 76 F iltering circuit for analogue signal wires

3. R-C lowpass is used to the analog signal s with slow variation.

C

0.022uf/50v

Ferrite ring

( Frequency

converter)

72

2. Connection

R

Transducer

Figure 2 77 RC Lowpass

4. Use the current transmission line instead of the voltage transmission line . Then,

the current is converted to voltage signal again by t he parallel resistance at the

end of long transmission wires. In this case, the wires sh all be shielded and

single-end grounded .

D/A

Interference

Interference in

in

in Digital

2.11.4.2

2.11.4.2 Check

1.

A

resistance connected in series or a lowpass filter can be used to check the

Check

Check Interference

NC device

Figure 2 78 C urrent T ransmission of Analogue S ignal

C

R

Digital

Digital Signals

Amplifier

Servo driver

Transducer

Signals

o r

wave oscillation of digital signals caused by the improper cabling and a large

loop of signal wires.

R

Circuit 1

(a) Inserting a damping resistance in series

Figure 2 79 Checking the digital signal oscillation

2. H igh frequency decoupling capacitors should be set at the connector ends of

i nput/output transmission wires. Generally, the frequency of I/O signals is lower

than the clock

connected between I/O and the ground should ensure that I/O signals can work

normally and filter high clock frequency and its harmonics . C apacitance should

be connected between I/O wires and the ground wires.

3.

A

data circuit filter equipped at signal wires can check the high frequency

’

s . The selection of a high frequency decoupling capacitance

Circuit 2

Circuit 1

(b) Inserting a lowpass filter

Bead

C

Circuit 2

73

2. Connection

common-mode interference effectively. The filter is compose d of ferrite rings or

hollow capacitors . For example, the cable can be equipped a ferrite ring near

the transformer . The best way is to use a connector with filter. E ach socket of

this kind of connector contains a filter composed of a ferrite bead and hollow

capacitor .

4. The output signals coming from the optical encoder, electronic hand-wheel, and

raster ruler etc at the receiving end are connected to the capacitances in parallel,

which can check the interference with high frequency.

A

Position

loop board

(NC device)

A

B

Z

Optical encoder output

0V

Figure 2 80 C onnect ion with c apacitance in parallel

5. R educe the input reluctance of sensitive circuits.

6 × C (ceramic) C : 1nf~0.1uF

A

capacit ance or a resist ance

with low ohm is connected in parallel to the input side of a CMOS circuit , which

can reduce the static electricity interference . For the differential transmission of

digital signal, a capacit ance and a resist ance are connected in parallel to the

input side of digital signals , which can improve the anti-interference ability .

NC device

R

C

T

R

51~200 Ω

T

:

C

47~220PF

T

:

Figure 2 81 Reducing I nput R eluctance

2.11.5

2.11.5 Prevention

Prevention

Prevention of

of

Producing

of

Producing

of Producing

Producing Interference

Interference

Besides checking the interference coming from outside, it also needs to take proper

measures to reduce the interference from NC unit. Shielding and the absorbent

circuit for inductive load are recommended .

74

2. Connection

2.11.5.1

2.11.5.1 Shielding

Shielding is the most effective and frequently adopted method . The shield technique

has been applied to check the electromagnetic interference propagated in the air, i.e.

to cut off the route the interference moves along. Generally, use the metallic or

magnetic material t o separate the in ternal and external field of the shielded body

from each other .

Shielding is in principle divided into electrical field shielding, magnetic field shielding,

and electromagnetic field shielding .

1. Electrical field shield ing

If the interference is from the high-voltage and low-current, its radiation field is

mainly electrical. The electrical field shielding is to check the interference

induced by the electrical field coupling between the interference source and the

sensitive equipment s.

Shielding

Note:

Note: Good g rounding is the prerequisite for the metallic plate producing

electrical field shielding . No grounding or bad grounding may result in even more

serious interference than that of the situation with out the metallic plate equipped .

- Essentials of Electrical field shielding design

a. Ground ing firmly with the metallic outer cases of power equipments (such as

servo drivers, frequency converters , step per drivers, switching supply ,

motors) is to construct active shielding .

b. Grounding firmly with the outer cases of sensitive equipments ( such as NC

devices etc.) is to construct passive shielding .

c. Keep the power equipments far away from the sensitive equipments.

Generally, the equipment with strong current should be more than 30cm (at

least 10cm) far away from the equipment with light current in the same

cabinet .

d. Keep the power wire s with high-voltage and large-current separate from the

signal wire s . For example, use the independent slot, and keep more than

75

2. Connection

30cm (at least 5~7.5cm) far away. Try to avoid laying the wires in parallel.

Do

not

tie

Do

not

Do

Do not

not tie

those

tie

those

tie those

those two

two

kinds

two

kinds

two kinds

kinds of

of

wires

of

wires

of wires

wires up

up

up .

.

e. Lay the signal wires as close as possible to the ground wires (or ground

plate) , or use the ground wires to surround them .

f. The prerequisite for the shielded cables providing the passive and active

M

ore

shield is that the shielding is grounded. M

M

M ore

electrical

ore

electrical

ore electrical

electrical field

field

field coupling

coupling

would

would be

be

produced

be

produced

be produced

produced ,

,

if

the

,

if

the

, if

if the

the shielding

shielding

shielding is

is

not

is

is not

grounded

not

grounded

not grounded

grounded .

g. I f the power wires cannot be laid separately from the signal wires, the power

wires sh all be shielded and grounded reliably .

2. Magnetic field shieldi ng

If the interference source is with low-voltage and large-current, its radiation is

mainly of magnetic field. The magnetic field shielding is to check the interference

induced by the magnetic coupling between the interference source and t he

sensitive equipment. It is characterized as the low magnetic resistance of the

material with high magnetic conductibility, which can bypass the flux and reduc e

the strength of magnetic field in the shield a lot .

- Essentials of Magnetic field shielding design

a. Use the material with high magnetic conductibility, such as permalloy, and

increase the thickness of shield properly .

b. Do not set the shielded items near the shied . Try t o reduce the flux flowing

through the shielded objects,

c. Pay attention to the structure design of shield. For shield a stronger field, the

double-layer magnetic shielding can be employed .

d. Reduce the loop area of the interference source and the sensitive circuit. The

best way is to use the twisted wires or the shielded wires and make the

signal wire and the ground wire (or carr ier loop) twist ed together, which

mak es the shortest distance between them .

e. Increase the distance between the interference source and the induced

circuits to make their mutual inductance as less as possible .

f. If possible, l ay the circuit of the interference source perpendicular (or

76

2. Connection

approximately) to the induced circuit , which gr eatly reduce s the magnetic

coupling between them .

g. K eep the sensitive equipments at least 30cm away from the interference

source (such as power equipments, transformers) .

3. Electromagnetic field shieldin g

Electromagnetic field shielding is to check the interference from the

electromagnetic field coupling when the interference source is far away from the

sensitive equipment. It must shield both the electrical and the magnetic fields.

The materials with l ow resistance and good conductibility are usually used . The

electromagnetic waves are reflected and absorbed when they are reached the

metallic surfaces. The electromagnetic energy is then reduced a lot, so that the

shielding takes effect .

- Essentials of shielding box design

A. Structural Material

a) Plates made of copper, iron, aluminum or zinc-coated iron with the

thickness around 0.2~0.8 mm is generally taken as the shielding materials.

These plates shield the electrical field, the high frequency magnetic field,

and the electromagnetic fi eld effectively (over 100dB) .

b) The ferromagnetic material with high-conductibility is not used to make a

case, but on the components requiring the low-frequency magnetic

shielding.

c) For the plastic case, spray its inner surface with a conducting layer, or add

the metallic powder or fiber with high-conductivity during molding to make a

plastic case conductive.

B. Overlap joint

The electrical continuity of cases is the critical factor of shielding

effectiveness of the shell . Thus, decreasing the electrical dis continuity of

the shell is to limit the electromagnetic field leakage and radiation from the

base plate and cabinet.

77

2. Connection

a) Make the best overlap joint at any gaps and dis continuity area of chassis

and c abinet.

b) Ensure that the corresponding metallic contacts are connected firmly at any

gap of joint to prevent from the leak age and radiati on of electromagnetic

field .

c) Weld the gaps of joints if possible . I n the limited condition, dot welding, close

riveting, or s c rew fixing is used .

d) Any fix ture sh all be strong enough to keep surfaces contact to each other

under stress, shock, and vibration .

e) The material made of c onductive liner o r finger setting bolt spring sh all be

used at any uneven gap of joint or the removable panel .

f) Be sure there is no insulated protective layer (such as paint, plastic film) on

the metallic surface where the liner is used .

g) When the moving contact is required, u se finger setting bolt spring , rather

than grid liner, and keep the pressure of the finger setting bolt spring .

Note:

Note: There are some kinds of liners , such as radiofrequency metallic grid liner,

copper-coated alloy liner, conductive rubber liner, conductive covering cloth liner,

and foamed liner .

C. Inlets and Outlets

Generally, there are lead-in and lead-out of the supply lines and contro l

wires in the chassis . There are also some operational keys on the panel,

the interface for screen, vent etc. All of these ma y lead to serious leakage of

electromagnetic waves .

a) Pay attention to the reduction degree of t he whole shielding effect , when the

cables are through the case .

A

typical unshielded cable decreases more

than 30dB of shielding effect , when it is p assing through a shielded body .

b) All the supply lines sh all pass through filter boxes while entering into the

case .

c) Any signal or control wire s sh all pass through a proper filter while coming

in to or going out of the case .

78

2. Connection

d) A dd metallic caps on fuses and sockets etc.

e) Use conductive liners , washers and nuts to prevent the leakage of toggle

switches .

f) The cellular plate is used to shield the vent where the shielding, ventilation,

and strength are strongly required and the weight is not limited harshly. It is

better to weld the cellular plate firmly to prevent the electromagnetic

leakage .

g) It is better to shield indicators/screens in the rear, and filter all the lead -wire s

with the hollow capacitors. If it is hard to implement those measures , use the

metallic net or the conductive glass connected to the case to shield in front

of these indicators or screens ( t he shield glass embedded with metallic

thread, or the glass or clear plastic coated with clear conductive film is

recommended .).

2.11.5.2

2.11.5.2 A

While being turned off, the inductive loads, such as relays, contactors,

electromagnetic valves, and motors, would produce intensive pulse interferences

and hinder other circuits from working normally. A n absorber circuit is required to

check the transient interference. Figure 2-82 shows the schematic diagrams of the

absorber circuits .

Note:

Note: According t o different requirements , the ends of inductive load can be

connected in parallel to the absorber circuits, such as resist ance , voltage-sensitive

resist ance , voltage reference diode, etc. However, R - C ( arc extinguisher) circuit is

recommended because of its good absorbe nt effect. The extinguisher should be

installed as close as possible to the inductive load .

A

bsorbe

A

bsorbe

A bsorbe

bsorbe r

r

C

r

C

r C

C ircuit

ircuit

ircuit for

for

for I

I

nductive

I

nductive

I nductive

nductive L

L

L oad

oad

79

2. Connection

+24V

IN4001

MC1413

Output

Interface

(a) The shunt diode for DC relay coil

J

KM

J

R

50 Ω ~1 K

（

C

R

(b) The shunt R - C (arc extinguisher) for coils of AC relay, contactor, and electromagnetic valve .

Arc Extinguisher

M 3~

C （ 0.1uf~2uf ）

Arc Extinguisher

）

( c ) T he arc extinguisher for AC three-phase AC induction motor

Figure 2 82 Absorber components for inductive loads

2.11.6

2.11.6 Summary

- The control cabinet must be made of cold-rolled steel plates.

Summary

Summary of

of

Design

of

Design

of Design

Design Guide

Guide

To

keep the

electromagnetic consistency of cabinet, the single-body structure or welding is

recommended .

- The cabinet is made of zinc-coated steel plate to improve the grounding effect of

the system .

- In cabinet, each component is installed and laid separately according to the

power level (strong or light).

- The shield layer of all the shielded cables sh all be grounded at their entrance

into the cabinet .

- The power wires and feedback wires of every feed drive motor or spindle motor

with drive sh all be connected to the drive unit directly, not through the terminals .

80

2. Connection

- Use the shielded cables for the signal wires with the light current , such as the

position feedback wires, the command given wires, and the communication

wires. The cross section area of every single lead sh all not be less than 0.2 mm

It is better to use t he double-twisted, double-shielded cable s.

- The twisted multiple core wire s are recommended for the power supply cables in

the shielded cables of I/O terminal boards and encoder feedback, to raise the

anti-interference ability of signal supply and relevant components .

- The case of each component must be grounded reliably .

-

A

reliable common ground is required among component s .

Fig ure 2 -83 shows a n example of comprehensive electromagnetic compatibility

design for a system including NC device, driver, AC induction motor, contactors and

valves. The logic control components (such as air switches, contactors, relays) and

their circuits are omitted .

2

.

81

2. Connection

HNC-21 /22

G

rounding bar

Isolation transformer

L ow - pass

～

L1

L2

L3

PE

*1

*4 *3

*3

*

2

* 6

*

5

* 3

* 6

* 7

*7

Low -

pass

* 8

* 8 *5

KM1

* 7 *7

* 9

*7

* 7 *10

*

10

*10

D rive unit

I/O

terminal

board

* 7

*11

*

11

* 11

*10

Co mmand

feedback

Power

feedback

C

ontrol power

D rive power

Supply for contactors

DC24V

AC24V

Asynch.

motor

D rive motor

*

5

YV

～

* 9

* 7 + -

valve

DC v alve supply

Note:

1. T he system should be connected reliably to ground and PE ground b ar in the

2. Grounding with the high-voltage (2000V) ceramic capacitances at the entrance

3. Wind the wire through the magnetic ring 4-5 turns .

82

Figure 2 83 C omprehensive electromagnetic compatibility design

control cabinet as close as possible . The grounding resistance must be less

than 4 ohm.

of power wires to cabinet (before the main air switch) with 3 phases reduces the

interference (pulse, surge) propagated along the supply cable obviously .

2. Connection

4. The ground ing bar is made of copper plate not less than 3mm high. Good

contact and perfect conductibility are required .

5. RC extinguisher is us ed for large inductance loads (AC contactor coils, 3-phase

AC induction motors, AC electromagnetic value coils, etc.) to absorb

high-voltage back electromagnetic force and to check the interference .

6. Isolation transformers are used for servo supply, control supply and supply for

NC systems .

7. The shell of components and their shield sh all be grounded reliably. The ground

wires of some important components and the ground wires among the control

cabinet s sh all not be less than 2 .5 mm

2

.

8. Some important components, such as AC supply for NC system, sh all work with

low-pass filters to reduce the high-frequency interference from industrial

frequency supply .

9. If the power of NC unit is DC24V, the power supply can be shared with I/O

switches . The switching supply is suggested . However, an independent source

is requir ed to supply DC coils of valves and brakes .

10. Adding hollow ferrite cores at both ends of shielded cables, especially for the

position feed back cables and the command given cables, can effectively raise

the reliability of signal transmission .

11.

The shield layer of shielded cables must be thick and dense, with out gap or

crevice. Each wire must be multiple-core, no t less than 0.2 mm

2

. Several wires

connected in paralle l are used for the signal power cables (generally, supply

wire and supply ground wire use their own three wires connected in parallel ,

respectively.). It is better to use double-twisted and double-shielded cables .

83

HNC- 21/22 Connection Manual

3

Parameters

3

Parameters

3

3 Parameters

Parameters

This chapter mainly describes the settings of parameters on HNC-21/22.

- Overview

- Setting Parameters

- Description of Parameters

84

3.1

Axis 0~5

M achine parameter

A xis parameter

Servo parameter

Axis compensation parameter

PMC

user parameter

DNC

parame ter

Q uadrant transition parameters

Parameter

index

Axis 0~5

Axis 0~5 Axis 0~5

Overview

3.1

Overview

3.1

3.1 Overview

Overview

3. Parameters

Before

Before parameter

understood,

understood, as

result

result .

The

The modified

Thus,

Thus, NC

Description of common terminology and buttons:

1. T he index of parameters is shown in Figure 3-1.

parameter

parameter updating,

as

as incorrect

.

modified

modified parameters

NC

device

NC

device

NC device

device shall

updating,

updating, its

incorrect

incorrect parameter

parameters

parameters would

shall

shall be

its

function

its

function

its function

function and

parameter

parameter setting

would

would be

be

restarted

be

restarted

be restarted

restarted once

and

and original

setting

setting or

be

effective

be

effective

be effective

effective only

once

the

once

the

once the

the parameter

or

or updating

parameter

parameter s

original

original setting

updating

updating may

only

only if

setting

setting sh

may

may cause

if

NC

if

NC

if NC

NC device

s

are

s

are

s are

are modified.

sh

sh all

cause

cause the

device

device is

modified.

all

be

all

all be

is

clearly

be

clearly

be clearly

clearly

the

serious

the

serious

the serious

serious

restarted.

is

restarted.

is restarted.

restarted.

2. Screen: An area to display and modify the parameter values .

3. Buttons:

F1 ~ F10 : press one of these keys to implement the specific operation.

Enter : It is to confirm the operation.

,

↑

↓

Pgup , Pgdn : Press this key to move up /down one page .

,

←

→

Figure 3 1 Index of Parameters

: It is to move the cursor.

85

3. Parameters

3.2

Setting

3.2

Setting

3.2

3.2 Setting

Setting Parameters

To

edit a certain parameter, the operator must input the correct password first. Those

parameters are divided into three groups: CNC vendor, Machine tool’s vendor and

the operator. Users from different group have different password. If the password is

wrong or the privilege is low, then the parameter is not allowed to modify. For more

detailed information, please refer to HNC-21/22 operation manual.

Parameters

86

3.3

Description

3.3

Description

3.3

3.3 Description

Description of

of

Parameters

of

Parameters

of Parameters

Parameters

3. Parameters

3.3.1

3.3.1 Machine

Spindle encoder RPM [CNC manufacturer]

Turret direction [Operator]

D iameter/Radius [Operator]

Machine

Machine Parameters

Value : -32768~32767. The default value is 1024 .

Description : The number of pulse per revolution of spindle s ending from

Value : 0, 1 . The default value is 0.

Description : 0: the positive direction of axis X is downward.

Value : 0, 1 . The default value is 1.

Description : diameter/radius programming

Parameters

the encoder to NC unit.

1: the positive direction of axis X is upward.

0: radius programming

1: d iameter programming

Metric/Inches [Operator]

Value : 0, 1 . The default value is 1.

Description : measurement unit

0: unit of dimension is thousandth of an inch

1: unit of dimension is thousandth of a mini-meter

Power-off protection [Operator]

Value : 0, 1 . The default value is 1.

Description : 0: Power-off protection is disabled.

1: Power-off protection is enabled.

87

3. Parameters

Decimal number for inches [Operator] (only used i n HNC-21/22 v7.11)

Value : 0, 1 .

Milling: the default value is 0.

Turning: the default value is 1.

Description : 0: the number of digits is four in inch measurement.

1: the number of digits is five in inch measurement.

Storage device [Operator] (only used in HNC-21/22 v7.11)

Value : 0, 1 . The default value is 1.

Description : 0: Floppy disk, 1: USB

System time [Operator]

Value : 0, 1 . The default value is 0.

Description : 0: enabled, 1: disabled

PMC axis [Operator]

Value : 0, 1 . The default value is 0.

Description : 0: disabled, 1: enabled

Spindle encoder direction [Operator]

Value : 32, 33. The default value is 32.

Description : 32: +; 33: -.

Tool

offset type [Operator] (not used in HNC-21/22 v7.11)

Value : 0, 1 . The default value is 0.

Description : 0: the type of tool offset is absolute .

1: the type of tool offset is incremental .

Tool

wear -off accumulation [Operator] (not used in HNC-21/22 v7.11)

Value : 0, 1 . The default value is 0.

Description : 0: no, 1: yes

88

3. Parameters

revolution each for pulses

m) (revolution each at degree or distance moving

equivalent pulse External

)(equivalent pulse External

µµ=m

T he number of digits after the decimal point of coordinates value (not used in

HNC-21/22 v7.11)

Value : 0, 1 . The default value is 0.

Description : 0: the number of digits is three in metrics measurement, and

the number of digits is four in inch measurement.

1: the number of digits is four in metrics measurement, and

the number of digits is five in inch measurement.

Disk name of USB (not used in HNC-21/22 v7.11)

Value : 0, 1 . The default value is 1.

Description : 0: A, 1: D, 2: E, 3:

3.3.2

3.3.2 Axis

In this section, Axis 0 is taken as an example.

External pulse equivalent( μ m ) / External pulse equivalent [machine manufacturer]

Axis

Axis Parameters

Value : -32768~32767.

Description : It is the actual pulse equivalent of the coordinate axis, i.e. each

Parameters

Milling: t he default value is 1 /1 .

Turning: the default value is -2/5.

position unit corresponding to the moving distance or turning

degree of actual coordinate axis, namely the electronic gear

ratio of the system .

It is used to set the gear ratio. It can also be used to set the

F,

4: G

motor direction by changing the sign of electronic gear ratio .

Take

the servo motor encoder with 1000 p/r as an example, the

lead screw is 6mm, and the gear reduction ratio is 2:3. Then,

External pulse equivalent( μ m ) is 6mm*2/3=4mm (i.e. 4000 μ m ),

4000/10000=2/5.

External pulse equivalent( μ m ) is 2 and External pulse

equivalent is 5, which equals to 4/10.

89

3. Parameters

Positive software limit position [machine manufacturer]

Unit: μ m or 0.001 °

Value : -2147483648~2147483647. The default value is 8000000.

Description : One axis’s positive software limit position in M.C.S . It is only

valid after the reference point return.

Negative software limit position [machine manufacturer]

Unit: μ m or 0.001 °

Value : -2147483648~2147483647. The default value is -8000000.

Description : One axis’s positive software limit position in M.C.S . This is

only valid after the reference point return.

REF direction [machine manufacturer]

Value : [+], -. The default value is +.

Description : The initial movement direction when approaching the

reference point . The tool would move towards the opposite

direction, if the reference point switch is pressed while

sending the reference point return command.

REF point position [machine manufacturer]

Unit μ m or 0.001 °

Value : -2147483648~2147483647. The default value is 0.

Description : Generally, MCS origin is set as the reference point return. I t is

usually set as 0.

REF point offset [machine manufacturer]

Unit μ m or 0.001 °

Value : -32768~32767. The default value is 0.

Description : The certain distance the tool is moved after the pulse Z is

found. Then, the reference point is set.

90

hnc HNC-21, HNC-22 Connection Manual

Preface

Introduction

Table of Contents

Precaution

Safety

Installation

Wiring

Commissioning

Operation

Maintenance

Waste Treatment

General Instructions

List

Product Type

Dimensions

Installation

Environmental Requirement

Weather Condition

Elevation

Mechanical Environment

Environmental Pollution

Connection

Interface

NC Device

General Requirement

Grounding

RS232 Interface

Ethernet Interface

Input interface

Output interface

Handwheel Interface

Relevant Interfaces

Interface Description

Grounding

Safety Grounding

Working Grounding

Shield Grounding

Supply Filter

Anti-Interference

Shielding

Parameters

Overview

Setting Parameters

Machine Parameters

Axis Parameters