Wuhan Raycus Fiber Laser Technologies CO., Ltd.
P20QB/P30QB
Pulsed Fiber Laser User’s Guide V2.1
6
in Table 4:
Table 5. Definition of power control PIN value.
Setting 1 Setting 2 Setting 3 Setting 4
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 %
b)
PIN 17 is the external 5V DC input, providing power for inside chips of DB25 to ensure
that the input and output signals are valid: input current
＞
20mA.
c)
The external input signals (Pin 1-8, 18-20, 22) are connected to the optical coupler
inside the system. Input voltage 3V-5V are defined as digital High, below 1.7V are
defined as digital Low.
d)
Alarm setting: Pins 11, 12, 16 and 21 are the alarm and status outputs which driven by
+5V power from Pin 17. Pin 12 is reserved (always be high). These pins indicate the
following device states.
Table 6. Definition of alarm states.
PIN 12
PIN 11
PIN 16
PIN 21
Alarm item
×
Low
Low
Low
Temperature alarm
×
Low
Low
High
Normal
×
Low
High
Low
Obligate alarm
×
Low
High
High
System alarm
×
High
Low
Low
Supply voltage
×
High
Low
High
Laser system is not ready for
emission state
×
High
High
Low
Obligate alarm
×
High
High
High
Obligate alarm
e)
PIN 18 is the start signal of the MO. PIN19 is the input for the optical output signal. The
electrical level for both PIN18 and PIN19 are 5V. Before turning on PIN 19, MO
