Synrad Firestar Series User Manual

maintenance/
troubleshooting
74
SYNRAD OEM v30 Operator’s Manual Version 2
Troubleshooting
In some cases, it is easier to troubleshoot the laser processing system by disconnecting eld wiring from
the DB-9, or RJ45, connector and then installing the DB-9 Quick Start Plug to verify v30 laser operation.
If the laser was not shipped with a Quick Start Plug, you can fabricate one as shown in Figure below.
Pin 1 PWM Positive
Pin 6 PWM Negative
Pin 5 DC Out
Pin 9 Laser Enable
Pin 9 Pin 6
Pin 5 Pin 1
PWM Input BNC
Rear (Solder Side)
of Male DB-9
Quick Start Plug
Figure 5-2 DB-9 Quick Start Plug wiring diagram
Symptom:
■ The following status LED and I/O states exist:
LASE LED – O Lase Indicator – Low (0V)
RDY LED – Flashing Laser Ready – Low (0V) Laser OK – Low (0V)
PWR LED – Green
Overtemp Fault – High (+5V) Temperature OK – Low (0V)
DC Voltage Fault – Low (0V) Voltage OK – High (+5V)
Possible Causes:
■ Air-/fan-cooled lasers – an over temperature fault has occurred because cooling fans are not provid-
ing adequate airow to the laser.
Check that all cooling fans are clear of debris and are providing an airow rate of at least 4.0 m
3
/min (140
CFM) per fan at a maximum static pressure of 13.1 mm H
2
O (0.52 in H
2
O). To allow for proper airow,
cooling fans must have at least 57.2 mm (2.25 inches) of unobstructed clearance between the outside edge
of the cooling fan housing and any mounting surface or enclosure.
■ Water-cooled lasers – an over temperature fault has occurred because coolant temperature is above
22 °C (72 °F) or there is inadequate water ow through the laser.
Check that the chiller is maintaining a coolant temperature between 18 °C–22 °C (64 °F–72 °F) at a
ow rate of 3.8 lpm (1.0 GPM). If coolant temperature is OK, check the ow rate. If a ow meter is not
available, disconnect the cooling tubing from the chiller inlet (or the drain) and run the coolant for one
minute into a one-gallon container; you should have close to one gallon of coolant. If there is much less
than one gallon in the container, check the cooling path for kinked or pinched cooling tubes and check
the chiller for a clogged or dirty lter.

Synrad Firestar Series Specifications

General

Brand	Synrad
Model	Firestar Series
Category	Measuring Instruments
Language	English