JPT LP Series User manual

Pulsed Fiber Laser
YDFLP-E-20&30&50-LP
Version02
USER’S MANUAL

YDFLP-E-20&30&50-LP User’s Manual
IFile Number: S-PI-0033
Safety Information
Please read this manual carefully before operating the YDFLP fiber lasers.
In order to ensure the safe operation and optimal performance of the product, please strictly
follow the safety notification below.
●Make sure the +24VDC power supply is connected in the correct way. Inappropriate
connection might damage the product.
●To prevent electrical shock, please do not remove the laser cover. Warranty will be void
if warranty label is removed.
●Please wear appropriate laser safety goggle (see below Fig.1.) before emitting the laser.
We recommend OD4 goggle or better. This laser module carries a Class 4 laser rating,
which emits invisible 1064nm wavelength laser radiation with average output power over
20W and peak power over 7kW. Both direct beam and reflect beam will cause permanent
damage to the eyes, skin, and might cause fire.
●Caution: Even at 0% power emitting, the average output laser power is still around
100mW.
Figure 1 Laser Safety Goggle

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Table 1 Safety Labels and Labeling Locations
Symbols
Information
Laser Warning Triangle -Label of
laser emission
(Attached on the cover plate, near
the output fiber）
Compliance Label
(Attached on the cover plate)
Product Rating Information
(Attached on the cover plate)

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Contents
Safety Information ...................................................................................................................I
1．Product Introduction ..............................................................................................................1
1.1 Product Description...............................................................................................................1
1.2 Packing List...........................................................................................................................1
1.3 Operation conditions and safety instructions.........................................................................2
1.4 YDFLP Product Naming Convention....................................................................................3
1.5 Technical Specifications........................................................................................................4
1.6 Installation Dimensions.........................................................................................................7
2. Laser Interface...........................................................................................................................9
2.1 Power Supply Connector.......................................................................................................9
2.2 RS-232 Control Connector..................................................................................................10
2.3 DB25 Control Connector.....................................................................................................10
2.4 DB25 Control & Sequence..................................................................................................12
3. JPT GUI Laser Testing Software-TypeE...............................................................................13
3.1 GUI Operation.....................................................................................................................13
3.1.1 Serial COM port ...............................................................................................................13
3.1.2 GUI control function ........................................................................................................15
3.2 Laser monitoring function...................................................................................................19

1
1．Product Introduction
1.1 Product Description
JPT E type fiber laser control with standard DB25 interface and powered with 24V/5A(10A)
DC. It is designed for high speed and precise marking applications. The pulse response and
performance are much better comparing to the similar products. Significantly compact size is
perfect for smaller marking system.
Photographs of typical E type fiber lasers are shown in Fig.2 and Fig.3 ( the specific
appearance is subject to actual delivery):
1.2 Packing List
Please refer to the packing list according to table 2.
Table 2 Packing list of YDFLP
Item
Quantity
Fiber Laser
1
Test Sheet
1
Packing List
1
Precautions
1
Figure 2 YDFLP-E-20&30-LP-S
Figure 3 YDFLP-E-50-LP-L

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1.3 Operation conditions and safety instructions
Please read the following instructions carefully. Product reliability and lifetime probably be
effected if not following the user’s manual.
1) Make sure the +24VDC power supply is connected in the correct way. Wrong connection or
input voltage might damage the product.
2) Make sure the bending diameter of the fiber cable is larger than 15cm in anytime. Otherwise
will cause power lost even laser damage.
3) Make sure minimum10cm air gaps behind and in front of the fiber laser. And the air flow
direction of the system should be the same as the laser. Short ventilation distance and wrong
air flow direction will lead to the laser temperature rise.
4) The laser running ambient temperature range is 0~40℃, laser will get internal alarm if out of
this range. It’s a protection action to insure the lifetime of the laser.
5) Please keep the fiber laser source clean especially the laser output window. Please remember
to cover the output window when it’s exposed to the open environment. Dust on the window
will cause heat and damage the lens, which results in output power lost even laser damage.
6) Please make sure the power is off before installing and uninstalling the fiber laser.
7) Please do not look at the output window anytime when power on, and wear laser safety goggle
when operating the fiber laser.
8) The standard pulse width is 200ns for YDFLP-E-20&30-LP-S and YDFLP-E-50-LP-L. Other
pulse width is available for customization request.

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1.4 YDFLP Product Naming Convention
Table 3 Naming Convention for Pulsed Fiber Laser
YDFLP – X – XX – XX – X – X
1 2 3 4 5 6
1、Product Name ：Ytterbium Doped Fiber Laser Pulse (YDFLP)
2、Product type
3、Average Output power
4、Pulse Characteristics： M series - adjustable pulse width
LP series - fixed pulse width
5、Optical Fiber attributes：S: Single mode, M²＜1.5
L: Low mode, M²＜1.8
H: High mode, M²＞2.5
6、Additional function： R: Built-in red pilot laser
Examples：
YDFLP-E-20-LP-S：E type LP, using single mode type of optical fiber with nominal output @20W.
YDFLP-200-M7-H-R：Customized M7, using high mode type of optical fiber with the nominal
output power @ 200W, integrated built-in red pilot laser.

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1.5 Technical Specifications
Table 4 Specifications of the LP series pulsed fiber laser
Characteristic\Laser Type
Unit
E-20-LP-S
E-30-LP-S
E-50-LP-L
M²
<1.5
<1.8
Delivery Cable Length
m
2
3
Average Output Power
W
>20
>30
>50
Maximum Pulse Energy
mJ
0.8
1.25
Pulse Frequency Range
kHz
1-600
Full Power Frequency Range
kHz
25-600
37-600
40-600
Pulse Width
ns
200
Output Power Instability
%
<5
Cooling Method
Air Cooled
Power Supply Voltage
V
24(DC)
Power Consumption
W
<110
<150
<220
Power supply current requirement
A
>5
>7
>10
Central Wavelength
nm
1064
Emission Bandwidth （FWHM）
nm
<15
Polarization
Random
Anti-Reflection Protection
Yes
Output Beam Diameter
mm
7.0±0.5
Output Power Tuning Range
%
0～100
Ambient Temperature Range
℃
0～40
Storage Temperature Range
℃
-10～60
Dimensions
mm
245*200*65
325*260*75
Package Size
mm
365*310*135
580*400*140
Weight
Kg
Net：3.75
Gross：4.35
Net：4.25
Gross：4.8
Net：8.2
Gross：9.5

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Table 5 LP Series Fiber Laser Power Reduction Frequency Value（kHz）
YDFLP-E-20-LP-S
YDFLP-E-30-LP-S
YDFLP-E-50-LP-L
25
37
40
★ The maximum output frequency will be limited to 600kHz.
*The laser will have expected output power when working above power reduction frequency.
When working below power reduction frequency, the power will drop accordingly to maintain the
output peak power. Below chart shows the relationship between frequency and output power:
Figure 4 Power reduction frequency & Output power relationship charts

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Figure 5 YDFLP-E-20&30-LP-S Output waveform graph
Figure 6 YDFLP-E-50-LP-L Output waveform graph
0.00
1.00
2.00
3.00
4.00
5.00
6.00
7.00
8.00
9.00
-20 30 80 130 180 230
P/kW
t/ns
0.00
1.00
2.00
3.00
4.00
5.00
6.00
7.00
8.00
9.00
10.00
-20 30 80 130 180 230
P/kW
t/ns

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1.6 Installation Dimensions
1）YDFLP-E-20&30-LP-S Laser dimensions
Figure 7 YDFLP-E-20&30-LP-S Laser module dimensions (Unit：mm)
Figure 8 YDFLP-E-20-LP-S Standard isolated output head dimensions (Unit：mm)
Figure 9 YDFLP-E-30-LP-S Standard isolated output head dimensions (Unit：mm)
The output isolator head is only for reference. Please be subject to the actual product.

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2）YDFLP-E-50-LP-L Laser dimensions
Figure 10 YDFLP-E-50-LP-L Dimensions of fiber laser module（Unit：mm）
Figure 11 YDFLP-E-50-LP-L Dimensions of fiber laser module（Unit：mm）
The output isolator head is only for reference. Please be subject to the actual product.

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2. Laser Interface
2.1 Power Supply Connector
The length of standard power cord for laser is around 1250mm. Please refer to Figure 12 &
Table 6 in below to install the power cable to the 24V DC power supply，and ensure the DC power
supply can provide enough output power. Please also note the polarity of the cable when
connecting.
Figure 12 Diagram of the power supply cable
Table 6 Definition of power supply cable
PIN#
Description
EARTH
Ground wire
+
24VDC Positive
-
24VDC Negative
Note: Housekeeping (main and control power supply independent) function can be customized.

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2.2 RS-232 Control Connector
RS-232 connector is available for connecting PC or red card. Customer can monitor and
control laser by E type software, serial commands or red card after connected. Pins definition is
shown in below Figure13 & Table 7:
Figure 13 RS232 connector DB9
Table 7 RS-232 Interface definition
PIN#
Description
1，4，6-9
No need to connect
2
RxD
3
TxD
5
GND
Note：If need to control laser by serial commands, please refer to the E type manual of serial port
instructions.
2.3 DB25 Control Connector
DB25 is the interface usually used to connect the marking control system. The Pins are defined
as shown in Figure 14 and Table 8.
Figure 14 DB25 Connector

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Table 8 DB25 interface definition
DB25 PIN#
Definition
1-8
IP0-IP7 Power Control
9
Latches power setting into the laser by rising edge
10-15
GND
Description: PIN10-15 have connected to the ground inside the fiber laser,
only need to connect control card GND with one of Pins.
16，21
Warning signal
Description:16 low level,21 high level: Normal
16 low level,21 low level: temperature alarm
19
Emission Modulation input (PA)
HIGH: Emission ON
LOW: Emission OFF
20
Frequency Modulation (TTL)
23
Emergency Stop signal
High level: Normal; Low level: Emergency Stop (this function can be
selected in GUI)
Emergency stop signal is from low to high, need to detect the rising edge of
MO firstly, then the laser can be re-emitted.
22
Control the pulse width ENABLE (Red Beam is preferred when Laser and
Red Beam are mutually exclusive. * refer to note2)
High Level: Red Beam On
Low Level: Red Beam Off
18
MO signal for turn on/off
HIGH: ON
LOW: OFF
17，24，25
No need to connect
Note 1: 4.6-5.4V will be recognized as TTL high; 0-0.5V will be recognized as TTL low.
Note 2：Red beam Pin22 signal has higher priority than MO and PA signal. When Pin22 signal is
high, MO and PA signal will be shut down internally. The laser can be emitted by restarting MO
and PA after Pin22 signal is low. When laser (Built-in red pilot laser version) alarms, the red beam
will take 2 short flashes and 1 long flashes as symbol till the alarm stops, and the cycle time is
about 1.5s.

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2.4 DB25 Control & Sequence
1) Output power control
PIN1~8 controls the output laser power by TTL signal. The encoding can be set within the
range of 0~255 which is corresponding to the 0~100% output power. The actual output laser power
may not be a linear relationship with these settings. And the actual output power also relate to the
frequency (see Figure 4). Pls refer to the example in table 9 current setting:
Table 9 Current setting of LP fiber laser (example)
Setting1
Setting2
Setting3
Setting4
PIN 1
0
0
0
0
PIN 2
0
0
0
0
PIN 3
0
0
0
0
PIN 4
0
0
0
0
PIN 5
0
0
0
1
PIN 6
0
0
1
1
PIN 7
0
1
1
1
PIN 8
1
1
1
1
Current
~50 %
~75 %
~87.5 %
~93.75
%
2) DB25 Sequence
Figure 15 DB25 Controlling Time Series Diagram
SUPPLY VOLTAGE 24V
PIN18 MO
PIN19 PA
PIN20 PRR
PUMP CURRENT
LASER OUTPUT

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➢A：12 seconds System initialization time.
➢B：≥4ms MO and PA signal delay time.
➢C：Switching off PA should earlier than MO or at same time.
➢D：Frequency sampling time under internal frequency mode, at least 1 complete frequency
period before turning on the laser (PA).
➢E：SIMMER value. The first pulse energy can be adjusted via E type software.
Fiber laser control system self-locking: If fiber laser is on abnormal status (high temperature,
low 24V power supply etc.), it will stop working to protect the whole system. Please restart the
fiber laser. Error messages are recorded in E type software.
3. JPT GUI Laser Testing Software-E type
E type is designed for YDFLP-E series laser. It has multiple functions including laser control,
setting the default parameters, setting the control mode, alarm monitoring, DB25 interface
monitoring, internal parameters monitoring etc. E type also records error events which caused
system self-locking.
3.1 GUI Operation
3.1.1 Serial COM port
1) Connecting method
Using USB TO RS232 cable to connect PC’s USB to the Laser’s RS-232 connector.
将串口号选为上图的串口号，然后点击打开串口，如下
Click the Serial Comm Number as follow:
Check the port number after connecting cable：my computer - > properties - > hardware
- > device manager - >

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Figure 16 The selection of GUI Serial Port connection
2) Connecting state
Figure 17 GUI disconnected state

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Figure 18 GUI connected state
3.1.2 GUI control function
1) GUI control the emission
①Choose the GUI control Mode
Figure 19 GUI Full Ctrl mode
GUI Full Control mode(GUI Ctrl)：When selecting the GUI full Control mode, all the parameters
of Internal/External Control mode (EG. power, frequency, pulse width, PA, MO) will change to
Internal Control mode. This mode will not be preserved after power off. It will change to “Free
Ctrl” mode after serial port closed, and all the parameters of Internal/External Control mode will

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be changed to the previous free control mode setting. User can select this mode to test the emission
of laser temporarily.
Figure 20 Free Ctrl mode
Free Control Mode (Free Ctrl): When selecting free Control mode, user can choose parameter
control mode individually. In this mode, all the settings will be preserved after power off. EG. User
can select this mode to lock a specific frequency or output power individually when don't want to
control it by external signal.
②Set parameters and emitting
Figure 21 Setting parameters and emitting
After selecting full control mode, user can set power, frequency, pulse width and then press “edit”
button to confirm. User can switch on/off emission when clicking “Laser” button.
Note: All the parameters except power can’t be modified during emission.
③Control MO signal
Figure 22 GUI control MO state