User’s guide Ytterbium Pulsed Fiber Laser RFL-P200 Ver.: 1.0
22
2)
Definition of alarm signal
Table 9 Definition of alarm signal
PIN12
PIN11
PIN16
PIN21
Alarm content
Reserved
Low
Low
Low
Laser temperature alarm
Reserved
High
Low
Low
Power supply error
Reserved
Low
Low
High
Normal
Reserved
High
Low
High
Laser is not ready
Reserved
Low
High
Low
High reflection alarm
Reserved
Low
High
High
System error
Reserved
High
High
Low
Reserved
Reserved
HIgh
High
High
Reserved
3)
PIN 17 is the external 5V input, providing power supply for alarm signal; input current must
be > 20 mA.
4)
External input signals (PIN 1-8, 18-20, 22) are all connected to the system optocoupler. The
input voltage in the range of 3.3V-5V means the digital
“
High
”
, below 1.7V means
“
Low
”
. The input current must be > 7 mA.
5)
Laser alarm output signals (PIN 16, 21) are connect to the optocoupler. External 17 pin 5V
power supply should be connected to ensure the effective signal.
Caution: Before turning on PIN 19, MO signal must be switched on, or the laser may be
damaged. The signal of PIN 18 must be ahead of PIN 19 at least 5 ms.
6)
I/O connection of digital signal
