USER I/O CONNECTION SUMMARY
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5
+ 24 VDC
Auxiliary Power
This connection pr24 VDC for driving external inputs or
outputs. The +24 VDC Auxiliary Power output can source up to 0.5 A
and is protected by a 0.5 A self-resetting fuse. The return (ground) path
must be through Pin 12, Auxiliary DC Power Ground.
6
Laser Active
output
This bi-directional switched output is internally connected to Pin 13,
Output Common, when the laser is actively lasing (LASE indicator
illuminated red). This output is open (high impedance) when no beam is
being emitted (LASE indicator Off).
7
Fault Detected
output
This bi-directional switched output is internally connected to Pin 13,
Output Common, when (1) laser temperature is above safe operating
limits (TMP LED illuminated red) or (2) a No-Strike condition has
occurred (blue SHT indicator is flashing). The output is open (high
impedance) when laser operation is within limits (TMP LED green and
SHT LED blue).
8
Laser Ready
output
This bi-directional switched output is internally connected to Pin 13,
Output Common, when the laser is enabled (RDY LED illuminated
yellow), indicating that lasing will occur when a PWM Command signal is
applied to Pin 9 and Pin 1. When this output is initially switched closed,
there is a five-second delay during which lasing is inhibited. This output
is open (high impedance) when the laser is disabled (RDY indicator Off).
Pin
Description
Function
9
PWM Input
Connect your PWM Command signal (+5 VDC, 5 kHz nominal, 100 kHz
max, pulse width modulated) to this input pin to control laser output
power. Refer to Controlling laser power for further information on laser
control signals.
10
Shutter Open
Request input
Apply a positive or negative voltage (±5–24 VDC) with respect to Pin 11,
Input Common, to open the internal electromechanical shutter assembly. If
your system does not supply a Shutter Open Request signal, this pin must
be connected to a voltage source in the range of ±5–24 VDC. Refer to
Figure 3-7 for a diagram showing how the Shutter Open Request input is
factory-jumpered on the Quick Start Plug. The shutter will not activate
until a voltage is also applied to the Remote Interlock input (INT LED
illuminated green and RDY LED On).
11
Input
Common
Use this input pin to connect return lines for Remote Interlock, Shutter
Open Request, and Remote Reset/Start Request lines.
12
Auxiliary DC
Power Ground
This connection provides a ground (earth) connection for +5 and +24 VDC
auxiliary power outputs. This pin is the only User I/O pin that is connected
to chassis ground. Do not use this pin for grounding if DC power to
external I/O circuits is supplied from an external customer-supplied DC
power source.
