Integrating Firestar Safety Features; Oem Lasers - Synrad f201 Operator's Manual

technical reference

Integrating Firestar safety features

The Integrating Firestar safety features section includes subsections:
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Remote Interlock functions
Firestar's DB-15 User I/O connector allows system integrators or end-users to integrate Firestar safety
features into their control system. Firestar's keyswitch, shutter, and remote interlock functions serve
to enable or disable DC power to Firestar's RF drive. Without DC power, the RF driver cannot supply RF
energy to the resonator, causing the CO gas to remain in a zero-energy state. Firestar status indicators
2
provide users with a quick visual indication of the laser's operational status. All power to the laser's RF
board is removed whenever Ready or Shutter indicators are Off (Laser Ready or Shutter Open outputs
open).

OEM lasers

On OEM lasers, the Ready LED illuminates on DC power-up (provided that Shutter Open Request and
Remote Interlock inputs are enabled) and five seconds later, DC power is applied to the RF driver. Over
temperature faults are reset by removing and then re-applying DC power after the laser has cooled. Re-
mote interlock faults are not latched; the Ready LED illuminates yellow as soon as the interlock circuit is
closed (when the Remote Interlock LED turns from red to green) and five seconds later lasing is enabled.
Although a Remote Reset/Start Request input is not needed to reset OEM faults, it can be used to inhibit
(disable) lasing. Disable the laser by applying a voltage in the range of ±5–24 VDC to Pin 2, the Remote
Reset/Start Request input. Removing voltage allows DC power to reach the RF driver and begins a
five-second countdown after which lasing is enabled (Ready LED illuminates yellow). The RF driver is
disabled as long as voltage is applied to Pin 2.
Your control system can monitor the laser's ready status on the User I/O connector by connecting your
system's input between Pin 8, Laser Ready, and Pin 13, Output Common (see Figure 4-16).
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