E21 Operation Manual

E21 Operation Manual

Contents 

Preface...................................................................................................................... 

Chapter 1 Product Overview .............................................................................

1.1 Product introduction .....................................................................................

1.2 Operation panel ............................................................................................. 

1.3 Displayer.............................................................................................................

Chapter 2 Operation Instruction ....................................................................... 

2.1 Basic operation procedure ...........................................................................

2.2 Programming .................................................................................................... 

2.2.1 Single-step programming .........................................................................

2.2.2 Multi-step programming............................................................................

2.3 Parameter setting.............................................................................................. 

2.4 Manual movement ..........................................................................................

Chapter 3 

Alarm ...........................................................................................................................

Appendix Common fault and troubleshooting..............................................

Preface 

This manual describes operation of E21 numerical control device and is meant for  operators who are instructed for operation of the device. 

Operator shall read through this  manual and know operation requirements before using this device. 

Copy right is preserved by ESTUN. It is not allowed to add or delete part or all of the  manual content without ESTUN’s consent. 

Do not use part or all of manual content for the third  party’s design. 

E21 device provides complete software control and has no mechanical protection device  for operator or the tool machine. 

Therefore, in case of malfunction, machine tool must provide  protection device for operator and external part of the machine tool. 

ESTUN is not responsible  for any direct or indirect losses caused by normal or abnormal operation of the device. 

ESTUN preserves the right to modifying this manual in the event of function adding or print  error

Chapter 1 

Product Overview 

1.1 Product introduction 

This product is equipped with press brake machine dedicated numerical control device  which is applicable to various users. 

On the basis of ensuring work precision, the cost of  numerical control bending machine is reduced significantly. 

Features of this product are listed below: 

• Positioning control of back gauge.

• Intelligent positioning control. 

• Unilateral and bidirectional positioning which eliminates spindle clearance effectively. 

• Retract functions.

• Automatic reference searching. 

• One-key parameter backup and restore. 

• Fast position indexing. 

• 40 programs storage space, each program has 25 steps. 

• Power-off protection. 

1.2 Operation panel  Operation panel is shown in Figure 1-1.

Functions of panel keys are described in Table 1-1.

1.3 Displayer

E21 numerical control device adopts 160*160 dot matrix LCD displayer. The display area is  shown in Figure 1-2.

Title bar: display relevant information of current page, such as its name, etc. 

Parameter display area: display parameter name, parameter value and system  information. 

Status bar: display area of input information and prompt message, etc.

Chapter 2 Operation Instruction

2.1 Basic operation procedure

Basic switch over and operation procedure of the device is shown in Figure 2-1.

2.2 Programming 

The device has two programming methods, which are single-step programming and  multi-step programming. User can set up programming according to actual demand.

2.2.1 Single-step programming

Single-step programming is generally used for processing single step to finish work piece  processing. 

When controller is power on, it will automatically enter single-step program page. 

Operation steps  Step 1 After starting up, the device will enter setting up page of single-step program  automatically, as shown in Figure 2-2.

Operation steps

Step 1 After starting up, the device will enter setting up page of single-step program  automatically, as shown in Figure 2-2.

Table 2-2 Operation steps of single step example

2.2.2 Multi-step programming

Table 2-3 Multi-step parameter setting range

Parameter name	Unit	Setting range	Remarks
Step number of program	-	0~25	Set up total processing step number of this program
Preset work piece number	-	0~9999	Number of work piece to  be processed,  decreasing piece when  more than zero; negative increasing count.
Current work piece number	-	0~9999	Number of finished work  piece
Concession delay	s	0~99.99	Time between retract  signal and concession  execution.
Holding time delay	s	0~99.99	Time between  concession signal and  end pressurize output
X	mm/inch	-	Current position of X  axis, can’t be modified;
Y	mm/inch	-	Current position of Y  axis, can’t be modified;
X target position	mm/inch	0~9999.999	Program position of X  axis;
Y target position	mm/inch	0~9999.999	Target position of Y axis;
concession distance	mm/inch	0~9999.999	Distance of X axis concession;
Repeat times	-	1~99	Repeat times required by  this step.

Range of programming constant setup is shown in Table 2-5.

Table 2-5 Range of programming constant setup

Parameter name	Unit	Range	Default	Remarks
X-tea.in	mm	0~9999.99	10	In teach enable, input current  position of X axis
Y-tea.in	mm	0~9999.99	10	In teach enable, input current  position of Y axis
mm/inch	-	0 or 1	0	0: mm, 1: inch
中文/English	-	0 or 1	0	0: Chinese, 1: English
Release Time	s	0-99.99	0.3	Continue time of unloading output  after starting the system
Pulse Time	s	0.000-1.000	0.020	The duration of the pulse signal.
Version	-	-	-	Software version information, V  refers to version. 1: indicates version number. 0: indicates version level.

Step up parameter, parameter setup range is shown in Table 2-6.

Parameter Name	Unit	Range	Default	Remarks
X-digits	-	0~3	1	Decimal point displayed by X  axis position parameter
Y-digits	-	0~3	2	Decimal point displayed by Y  axis position parameter
X-safe	mm	0~9999.999	10	X axis keeps low speed in this  range
Y-safe	mm	0~9999.999	5	Y axis keeps low speed in this  range
Step delay	s	0~99.99	0.5	Interval between valid change  step signal and change step  operation executed

2.4 Manual movement 

In single-step mode, axis movement can be controlled by pressing key manually. This  method helps user to adjust machine tool and work piece.

Step 1 On single step parameter setup page, press or to enter manual page,  as shown in Figure 2-10.

Table 3-1 Alarm number and alarm message 

Alarm number	Alarm name	Alarm description
A.01	Count reached prompt	Count reaches preset value
A.02	XPos < minimum	X position value is less than minimum value
A.03	XPos > maximum	X position value is more than maximum value
A.04	YPos < minimum	Y position value is less than minimum value
A.05	YPos > maximum	Y position value is more than maximum value
A.06	X out of lmt.	X position value is out of the limited value.
A.07	Y out of lmt	Y position value is out of the limited value.
A.11	Count reached shut-down	When count reaches preset value, system  shut down automatically.
A.12	Beam is not on upper  dead point	In single step and multistep mode, slider is  not on upper dead center.
A.13	X Un-teachIn	Reset the teach function of X-axis
A.14	Y Un-teachIn	Reset the teach function of Y-axis
A.21	Oil pump not started	Oil pump signal loss
A.22	Encoder failure	Encoder voltage is too low.
A.25	Drive mode err	Neither the drive mode of X-axis and Y-axis is  double-frequency converter, please check it.
A.41	Parameter storage error	-
A.42	Abnormal power failure	-
A.43	System self-checking error	-

Appendix Common fault and troubleshooting

Fault phenomena	Trouble shooting
When power on, the device will not display.	The electrode of power supply terminal is  connected error; please see the  information of power nameplate. Voltage is too low.  Electrical outlet is not connected.
When X axis programming is operating, the  back gauge motor does not move, but Y AXIS  motor moves.	Two motors are reversed. Reconnect.
When program is operating, motor does not  move.	Check whether mechanical part has been  locked or slider returns to upper dead  center. Check whether the motor wiring is  connected well.
Motor can’t switch from high speed to low  speed.	Check whether high-low speed signal has  been sent or motor power is too small. Check whether the parameter of distance  conversion is correct.
When the device is in multi-step programming,  the program can’t change step.	Check when slider is on upper dead center,  START terminal is connected to +24V or not.
When the device is in multi-step programming,  the program can’t count.	Check when slider is on upper dead center,  START terminal is connected to +24V or not.
When programming is operating, the device loses control.	Check whether encoder cable is connected or not. Check whether the motor-direction wiring is correct (X+、X-、Y+、Y-).
When programming is operating, the device actual position will not display or change.	Check whether encoder wiring is correct or  encoder cable is connected well.