Wuhan Raycus Fiber Laser Technologies CO., Ltd.
RFL-P70QA Pulsed Fiber Laser User’s Guide V2.1
6
PIN 5
0
0
0
1
1
PIN 6
0
0
1
1
1
PIN 7
0
1
1
1
1
PIN 8
1
1
1
1
1
Current
~50 %
~75 %
~87.5 %
~93.75 %
100%
b) PIN 17 is the external 5 V input, providing power supply for alarm signal: input current >20
mA.
c) Those external input signals (PIN 1-8, 18-20, 22) are connected to the optical coupler inside
the system. Input voltage 3-5 V are defined as digital High, below 1 V are defined as digital
Low. The input current should be above 2 mA.
d) Alarms status: Pins 11, 12, 16 and 21 are the alarm and status outputs which driven by +5 V
power from PIN 17. PIN 12 is reserved (always be high). These pins indicate the following
device states.
Table 5 Definition of alarm status
PIN 12
PIN 11
PIN 16
PIN 21
Alarm item
×
Low
Low
Low
Temperature alarm
×
Low
Low
High
Normal
×
Low
High
High
System alarm
×
High
Low
Low
Supply voltage
e) PIN 10
、
PIN 14 are all digital GND.
f) PIN 20 is the pulse repeating rate signal (PRR, TTL level). If the PRR need to be changed
during the work, it must be changed 5ms earlier than the EM signal turning into high.
g) PIN 22 is the guide laser (
red diode
) on/off signal. High level switch on the guide laser
while low level switch off the guide laser.
4.Operation Regulations
4.1 Pre-inspection
a) Make sure the device appearance is in good condition and the output fiber is neither
excessively bended nor broken.
b) Make sure signal line of laser and marking system are properly connected.
