Estun E21 User manual

E21 Installation Manual
(Version: V1.09)

E21 Installation Manual
Contents
Preface ........................................................................................................... 1
Chapter 1 Specification............................................................................................. 3
1.1 Display............................................................................................................. 3
1.2 Internal memory............................................................................................... 3
1.3 Electrical specification..................................................................................... 3
Chapter 2 Installation ................................................................................................ 5
2.1 Announcements before installation................................................................. 5
2.2 Installation space and direction....................................................................... 5
2.3 Installation environment .................................................................................. 5
2.4 Installation dimension...................................................................................... 6
2.5 Installation layout............................................................................................. 7
2.5.1 Layout of rear panel ..............................................................................................7
2.5.2 Rear panel port description...................................................................................7
2.5.3 Overall wiring scheme...........................................................................................9
2.5.4 Electrical wiring scheme......................................................................................10
2.6 Definition of device interface......................................................................... 11
2.6.1 Definition of power interface................................................................................ 11
2.6.2 Definition of input interface.................................................................................. 11
2.6.3 Definition of external output interface..................................................................12
2.6.4 Definition of encoder interface.............................................................................13
2.6.5 Definition of communication interface .................................................................13
Chapter 3 Parameter Description of Machine Tool.............................................. 14
3.1 Enter parameter page.................................................................................... 14
3.2 Parameter Description................................................................................... 15
Chapter 4 Diagnosis................................................................................................ 22
4.1 Enter diagnosis page..................................................................................... 22
4.2 Input diagnosis .............................................................................................. 22
4.3 Output diagnosis............................................................................................ 23
4.4 Keyboard diagnosis....................................................................................... 23
4.5 FRAM diagnosis............................................................................................ 24
4.6 Encoder diagnosis......................................................................................... 24
4.7 LCD diagnosis............................................................................................... 25

E21 Installation Manual
4.8 Communication diagnosis............................................................................. 25
Chapter 5 Commissioning ...................................................................................... 26
5.1 Preparation before Commissioning............................................................... 26
5.2 Procedure...................................................................................................... 26
5.2.1 System parameter setting ...................................................................................26
5.2.2 Action commissioning..........................................................................................27
5.2.3 Precision commissioning.....................................................................................27
5.2.4 Counting commissioning.....................................................................................28
5.2.5 Retreat commissioning........................................................................................28
5.2.6 Teach function commissioning ............................................................................28
Chapter 6 Maintenance............................................................................................ 29
6.1 Instructions to maintenance .......................................................................... 29
6.2 Routine inspection......................................................................................... 29
6.3 Periodic inspection ........................................................................................ 30
Chapter 7 Appendix................................................................................................. 32
7.1 External power description............................................................................ 32
7.2 Grounding design.......................................................................................... 32
7.2.1 Ground classification in equipment cabinet.........................................................32
7.2.2 Equipment grounding design...............................................................................33
7.3 Protective measures...................................................................................... 34
7.3.1 Measures to ensure electromagnetic compatibility..............................................34
7.3.2 Instructions to E21 electromagnetic capability installation...................................36
7.3.3 Install freewheeling diode on relay......................................................................36
7.4 Demonstration of AC Asynchronies motor wiring.......................................... 37

E21 Installation Manual
1
Preface
Target reader
This manual guides the following operators to install, configure and maintain the E21
press break numerical control device:
Machine tool operators
Installation and maintenance personnel
Range of application
Installation and maintenance personnel can install and operate this device properly by
referring to this manual.
Regulation
The design of E21 press brake machine numerical control device complies with the
following grade standard:
Grade standard of EMC test:
-GBT 17626.2-2006 Electromagnetic compatibility (EMC) - Testing and
measurement techniques - Electrostatic discharge immunity test.
Grade 3; contact discharge ±4KV; air discharge ±8KV.
-GBT 17626.4-2008 Electromagnetic compatibility - Testing and measurement
techniques - Electrical fast transient/burst immunity test
Grade 3; power port ±2KV; communication port ±1KV.
-GBT 17626.3-2006 Electromagnetic compatibility - Testing and measurement
techniques - Radiated radio-frequency electromagnetic field immunity test
Grade strength: 10V/m; criteria: Grade A.
-GB/T 17626.8-2006 Electromagnetic compatibility(EMC) - Testing and
measurement techniques - Power frequency magnetic field immunity test
30A/m; 50～60HZ; criteria: Grade A.
-RE Test, reference standard EN55011
Execute CLASS A standard.
Environmental test standard

E21 Installation Manual
2
-Low temperature; refer to JB-T 8832-2001 General requirements for
numerical control device of machine tools, 0 ℃, 2hours. Low temperature
store -20℃. Criteria: normal start up, normal operation.
-High temperature, refer to JB-T 8832-2001 General requirements for
numerical control device of machine tools, 40 ℃, 2hours. High temperature
store 55℃. Criteria: normal operation.
-Constant temperature wet, refer to JB-T 8832-2001 General requirements for
numerical control device of machine tools, 40 ℃, humidity 93%~95%, 2 hours.
Criteria: normal operation.
-Vibration impact, refer to JB-T 8832-2001 General Requirements for numerical
control device of machine tools.
Personnel
Only authorized and properly trained person is allowed to operate this equipment.
Any person without necessary training is not allowed to use this control system, not
even for temporary use.
Area of responsibility distributed for personnel participating in installing, operating
and servicing equipment shall be stipulated explicitly and be confirmed eligible.

E21 Installation Manual
3
Chapter 1 Specification
1.1 Display
LCD display
Dimension of display window: 54.38mm*54.38mm
Dot matrix: 160*160
Status light
Green indicates running
Red indicates stop
1.2 Internal memory
Capable of storing 40 programs, each program includes 25 steps at most.
1.3 Electrical specification
POWER
Input voltage: DC24V±10%
Rated current: 1A
INPUT
Input voltage: DC24V±10%
Maximum input current: 10mA
OUTPUT
External voltage: DC24V±10%
Maximum current: 70mA
Encoder power
Output voltage: DC12V±5%
Allowable maximum output current: 500mA
Absolute temperature
Working temperature: 0～40℃

E21 Installation Manual
4
Storage temperature: -20～55℃
Encoder specification
Power supply: DC 12V
Incremental encoder: single-ended output, with Z/C phase
Output: voltage-type

E21 Installation Manual
5
Chapter 2 Installation
2.1 Announcements before installation
Power supply must be off during installation and wiring.
Serious damage to the equipment may be caused by misconnection of power
supply terminals, improper connection of in-out lines and output line short circuit.
Therefore, before turning on the power supply, check the connection of input output
grounding and power supply wire.
Grounding terminal of E21 digital control device must be grounded in correct way,
with low impedance lower than 0.3Ω.
Do not dismantle the device without authorization so as to avoid malfunction.
Electrical components inside the digital device are very sensitive to static electricity,
therefore do not put foreign matters or make them fall to the inside of digital control
device or touch the control circuit.
Please install E21 digital control device in safe region. Avoid high temperature, and
direct sunlight, moisture and splash of oil drops or water.
Do not use this device in place of high temperature, moisture condensation, dust,
oil smoke, conductive dust, corrosive gas or flammable gas.
2.2 Installation space and direction
Generally, E21 bending machine digital control device is embedded on control panel,
keep a distance of 65mm from its neighboring components and damper (shell) on up
and down, right and left, to facilitate operator install and maintain the device.
2.3 Installation environment
Place free from water, vapor, dust or oily dust.
Place free from flammable, explosive or corrosive gas.
Place free from interference of strong electromagnetism or noise.
Ambient temperature is between 0℃- 40℃. When ambient temperature is over
40℃, please put it in well-ventilated place.
Relative humidity is under 90%RH.

E21 Installation Manual
6
2.4 Installation dimension
The installation method is panel mounting. Installation dimension and drawings are
shown in Figure 2-1.
Unit: mm
4-M4 pressure riveting screws
High 8 mm
Figure 2-1 Panel Installation Dimension

E21 Installation Manual
7
2.5 Installation layout
2.5.1 Layout of rear panel
Rear panel block diagram is as shown in Figure 2-2, consisting of power port
(POWER), input port (INPUT), output port (OUTPUT), encoder port (X, Y), and
communication port (COMM).
Figure 2-2 Rear panel layout
2.5.2 Rear panel port description
Rear panel port description is as shown in Table 2-1.
Table 2-1 Rear panel port description
Socket number
External port name
External port description
CN1
POWER
Input terminal of the device power.
CN3
OUTPUT
13 pin. 24VDC, maximum drive capability 70mA,
opto-coupler isolation, maximum withstanding
voltage 40V.

E21 Installation Manual
8
Socket number
External port name
External port description
CN2
INPUT
7 pin. 24VDC, maximum load 10mA,
opto-coupler isolation, maximum withstanding
voltage 40V.
CN5
X-ENCODER
Incremental encoder is 12V single-ended
output, with pulse frequency up to 100KHz.
Meanwhile, the port supplies power externally
(as input power of encoder). The rated voltage is
12V, rated current 150mA, and ripple voltage no
higher than 100mV.
CN6
Y-ENCODER
Incremental encoder is 12V single-ended
output, with pulse frequency up to 100KHz.
Meanwhile, the port supplies power externally
(as input power of encoder), rated voltage 12V,
rated current 150mA, ripple voltage no higher
than 100mV.
CN4
RS232
For updating the device software.

E21 Installation Manual
9
2.5.3 Overall wiring scheme
Overall wiring scheme is as shown in Figure 2-3.
Figure 2-3 Overall wiring schemes

E21 Installation Manual
10
2.5.4 Electrical wiring scheme
Electrical wiring scheme is as shown in Figure 2-4.
PG
12V single-point
incremental encoder
white 12V
black 0V
red PA
green
PB
yellow PC
Encoder cable
shield layer
shell
PG
12V single-point
incremental encoder
white 12V
black 0V
red PA
green
PB
yellow PC
shell
Y-ENCODER
2,7 5 4 3
1,6
8,9
X-ENCODER
2,7 5 4 3
1,6
8,9
Shell
grounding
Shell grounding terminal
POWER
24V 0V
24V switch
power
COM1
START
START
24V
… …
COM2
24V
Encoder cable
shield layer
Figure 2-4 Electrical wiring schemes
It is recommended to use the relay which contains diode on coil, avoid high voltage
damage the circuit when cutting inductive load.
Shield layer of the encoder cable shall be connected to ground, which is the metal
housing of the product, with low resistor.

E21 Installation Manual
11
2.6 Definition of device interface
2.6.1 Definition of power interface
Definition of terminal is as shown in Table 2-2.
Table 2-2 Description of power terminal
Terminal No.
Signal
Description
1
24V
Input terminal of device power, connect to DC +24V.
2
0V
Input terminal of device power, connect to DC 0V.
3
PE
PE
2.6.2 Definition of input interface
Pin definition is as shown in Table 2-3.
Table 2-3 Definition of external output terminal
Terminal No.
Signal
Description
1
Start
Step change signal, DC +24V signal input, connect to upper
dead point signal generally, beam return to upper dead
point, +24V signal is connected, system receive step change
signal, system callout the next program and execute the
program.
2
Press
Back gauge retraction, signal, DC +24V signal input, avoid
interfering work piece by gauge device during work.
System X/Y axis positioning is finished, and slider gets away
from upper dead point. When slide just press against sheet,
retraction signal is connected. Back gauge will yield some
distance to direction of up counting (yield distance is
determined by program retraction value), avoid interference
by back gauge and work piece. When bending is finished
and slide return, back gauge will return from yield position.
3
X-EOT
X-axis reference point signal, DC +24V signal input, connect
to rear limit signal generally. When gauge touches reference
point switch, +24V signal is connected.

E21 Installation Manual
12
Terminal No.
Signal
Description
4
Y-EOT
Y-axis reference point signal, DC +24V signal input, connect
to low limit signal of Y-axis block generally. Block touches
reference point switch, +24V signal is connected.
5
Count
Retain
6
NC
Retain
7
MRDY
The pump signal must be connected to DC 24V when the
machine is normally running.
8
NC
Retain
9
COM1
Common port of system input signal must be connected to
0V of I/O power.
2.6.3 Definition of external output interface
Terminal definition is as shown in Table 2-4.
Table 2-4 Definition of external output terminal
Terminal No.
Signal
Description
1
X――
X axis high speed reversal
2
X―
X axis low speed reversal
3
X＋
X axis low speed forward
4
X＋＋
X axis high speed forward
5
XIP
X axis in position
6
Y――
Y axis high speed reversal
7
Y―
Y axis low speed reversal
8
Y＋
Y axis low speed forward
9
Y＋＋
Y axis high speed forward
10
YIP
Y axis in position
11
SRDY
System is ready to output
12
EH
End of holding time
13
ER
End of decompression
14
IN24V
Connect 24V+ of external IO power

E21 Installation Manual
13
Terminal No.
Signal
Description
15
COM2
Common port of system output signal must connect to 0V of I/O
power supply.
2.6.4 Definition of encoder interface
Encoder interface is DB-9 plug (female), definition of terminal is as shown in Table 2-5.
Table 2-5 Definition of encoder terminal
Communication mode
Incremental encoder terminal
Pin No.
3
4
5
1, 6
8, 9
2, 7
Signal definition
C
B
A
GND
NC
12V
[Note] GND of encoder cable can be connected to any pin among 1, 6, 8, and 9.
VCC of encoder cable can be connected to either 2 or 7.
2.6.5 Definition of communication interface
The device has integrated RS232 and RS485 serial interface, and the port adopts
DB-9 plug (male).
[Note] The RS232 used for upgrading device software only.
Terminal definition is as shown in Table 2-6.
Table 2-6 Definition of communication terminal
Communication Mode
RS232
RS485
-
Pin
2
3
8
9
5
1, 4, 6, 7
Definition
TXD
RXD
RS485A
RS485B
GND
NC

E21 Installation Manual
14
Chapter 3 Parameter Description of Machine Tool
3.1 Enter parameter page
Steps to entering parameter page are as below.
Step 1 Power on, and press two times to enter Programming Constant page, as shown
in Figure 3-1. On this page, program constant can be set.
CONST
mm/inch: 0
中文/English: 1
Release Time: 0.30
Version: 1.11
0: mm 1:inch
Pulse Time: 0.200
Figure 3-1 Program Constant page
Step 2 Move the cursor to parameter mm/inch or 中文/English, and input the password
14789, press to enter Parameter Setting page, as shown in Figure 3-2.
1. SYSTEM PARA
2. X AXIS PARA
Press ‘NUM’Enter
PARAMETER
3. Y AXIS PARA
4. BACKUP/LOAD
Figure 3-2 Parameter Setting page
Step 3 Select “1. System Parameter”, then press to enter system Parameter Setting
page, as shown in Figure 3-3.
SYS PARA 1/ 1PG
X-digits: 1
Range: 0~3
Y-digits: 2
X-safe: 10.0
Y-safe: 5.00
Step delay: 0.5
Count Select: 0
LDP Enable: 0
Figure 3-3 System Parameter Setting page

E21 Installation Manual
15
<Note>: You can directly enter Teach Page by input password “1212” and press
on Program Constant page.
Step 4 Input password 36987 on the CONST page to enter Motor-Speed Detection page, as
shown in Figure 3-4.
1.X Motor Dec.
2.Y Motor Dec.
Figure 3-4 Motor-Speed Detection page
Press Up-Arrow key or Down-Arrow key to enter X-axis page or Y-axis page. For
details, see the parameter description of Motor-Speed Detection
X-Motor Det. En.: 1
X-axis V1: 9999.999
X-axis V2: 9999.999
X-axis V3: 9999.999
1/2 PG
X. Det. Time.: 9.99
Figure 3-5 X-axis Motor-Speed Detection page
----End
3.2 Parameter Description
The parameter description is as shown in Table 3-1.
Table 3-1 Parameter specification
Name
Default value
Range
Description
X-digits
1
0~3
Decimal digits indicated by X
axis parameter
Y-digits
2
0~3
Decimal digits indicated by Y
axis parameter

E21 Installation Manual
16
Name
Default value
Range
Description
mm/inch
0
0 or 1
0: Metric
1: inch
中文/English
0
0 or 1
0: Chinese
1: English
Release Time
0.3
0~99.99s
Interval between valid yield
signal and unloading output
when system starts.
Pulse Time
0.20
0.00~1.00s
The duration of the pulse
signal.
X-safe
10
0~9999.999mm
Keep low speed within this
range
Y-safe
5
0~9999.999mm
Keep low speed within this
range
Step delay
0.5
0~99.99s
Interval between valid step
change signal and system
executing step change.
Count Select
0
0 or 1
0: UDP, when the slider
leaves the UDP, the count
increases by 1.
1: EH, when one process
has been done, the count
increases by 1.
LDP Enable
0
0 or 1
0: Disable
1: Enable
Transducer
0
0 or 1
0: Vacon
1: Shihlin
X-tea.in
10
Between soft lim.
Input current X axis position
when teach enable.
Y-tea.in
10
Between soft lim.
Input current Y axis position
when teach enable.

E21 Installation Manual
17
Name
Default value
Range
Description
X-Enable
1
0 or 1
0:disable
1:enable
Encoder Dir.
0
0 or 1
0:decreasing
1:increasing
Teach. En.
1
0 or 1
0:disable, enable the
orientation function.
1:enable, enable the
teaching function.
Ref. Pos.
500
0~9999.999mm
Position displayed when X
axis reference point is found.
X-Min
10
0～9999.999
Minimum position of X axis;
X-Max
500
0～9999.999
Maximum position of X axis;
MF
40
1～99999999
X axis multiple factor, for
conversion between pulse
and millimeter.
DF
1
1～99999999
X axis divide factor, for
conversion between pulse
and millimeter.
Stop Dis.
1
0~9999.999mm
Advance stop range. Motor
stops and carries out inertial
motion when enter this range.
Tolerance
0.2
0~99.999mm
Position tolerance, in position
signal is output when reaching
this range.
Overrun En.
1
0 or 1
0:disable, orientation is
bilateral.
1:enable, orientation is
unilateral.
Over.Dis.
10
0~9999.999mm
Over travel distance, valid
when positioning both sides