Coherent C series CO2 laser
This came from a Markem Imaje 7031 laser marking system. Seems there is not much info online, so as I have a working system I thought I'd document it
It is a RF-excited aircooled unit. Label says 150W max, but I have no idea of what the actual output is. Certainly burns well though! Looking at similar units I think it's around 30W.
RJ45 | In/Out | |
1 (orange/white) | Input | Gate - beam modulation - high for on, low for off. 1-15KHz in original system |
2 | Power out | +15v output |
3 | Output | Goes high after warmup period ( approx 40 seconds) |
4 | Connected but function unknown | |
5 | Connected but function unknown | |
6 | Connected but function unknown | |
7 | Enable | High to enable laser |
8 | Ground |
The header next to the power input has
some RS232 signals - outputs a copyright message at startup , 9600 baud
I subsequently found some info in
This manual which seems to match up with what I found.
1 |
Modulation TTL logic input; 1=RF ON, 0=RF OFF; 1 kΩ impedance This input turns on the laser. See also Pin 7, Control Enable, below |
2 | + 15 VDC ± 0.5 VDC, 0.25 Amps Max output for customer use |
3 |
LASER OK TTL logic output; 1=LASER OK, 0=LASER Fault; IOH = -0.4 mA, IOL= 8 mA Output is asserted when no faults (VSWR, Temp. or Volt.) are detected |
4 |
Temperature OK TTL logic output; 1=Temp OK, 0=Temp Fault; I OH = -0.4 mA, IOL= 8 mA Output is asserted when temperature is below the 60ºC case temperature warning level The temperature fault will occur at a case temperature of approximately 80º |
5 |
Voltage OK TTL logic output; 1=Voltage OK, 0=Voltage Fault; IOH = -0.4 mA, IOL= 8 mA Output is asserted when DC supply voltage (V DD ) is between 43 VDC < V DD < 55VDC |
6 |
Temperature Monitor TTL logic output. This pin puts out a pulse width modulated signal that represents the internal laser temperature in degrees Celsius. The positive duty cycle of the signal directly represents the temperature. For example, a duty cycle of 35% represents 35ºC. A duty cycle of 0% represents a temperature of 0ºC or below, and a duty cycle of 100% represents a temperature of 100º C or above |
7 |
Control Enable TTL logic input; 1=Laser Control Enabled, 0=Laser Control Disabled This input must be asserted before Modulation can be used to turn on laser |
8 | Customer Logic Ground for all interface signals |