Synrad 32-1 - Cooling; Optical Setup

SYNRAD® 32-1 Operator’s Manual Version 2.2
33
Technical Reference
Optical setup
After selecting a CO laser for your processing system, the two most important elements to
consider are: (1) delivery optics to transmit the beam to the work area; and (2) focusing optics
to focus the beam onto the part or material to be processed. Each element is crucial in the
development of a reliable laser-based material processing system and each element should
be approached with same careful attention to detail.
If an electronics failure causes the control board to output PWM power to the RF Drivers in
excess of 20% of the PWM input, a fault shutdown will occur.
To reset after any fault shutdown, correct the problem(s) then cycle the power on/o to the
laser for 30-seconds. During any fault shutdown, the fault shutdown output (Pin 1 of the DB-9
connector) will latch to low state until a reset occurs.
Power-On Reset is defeated on all OEM versions. OEM customers must provide this required
safety feature elsewhere as part of their equipment integration.
Cooling
32-1 electronics are mounted opposite the laser tube in the smaller section of the “H” bay and
share the same cooling removal as the plasma tube. Typical eciency of CO
2
laser plasma
tubes operating in a TEM
00
mode is 10% to 12% (radiation out to RF power in). Factor in the
conversion eciency of AC input to RF output and the overall “wall plug” eciency of these
lasers drops to about 6% to 8%, resulting in a considerable amount of heat removal, even at 5
W output power levels; therefore, external cooling in the form of forced air is required.
Caution
Since 32-1 lasers are OEM products, they do not include cooling
fans. Customers must provide some type of air cooling to prevent
the laser from overheating. See the cooling requirements at the
end of this chapter and cooling 101 located on our website.
Possible
Equipment
Damage