Novanta 32-1 Laser, User Manual

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DB-9 CONNECTIONS PAGE | 39
Important Note: When operating in CW mode, laser power output cannot be adjusted. If you
require an adjustable output power level, refer to the Pulse width modulation (PWM) section for
information regarding high frequency operation.
DB-9 connections
32-1 lasers are equipped with a female DB-9 connector mounted to the sidewall of the laser. The DB-9
connector provides the user with a convenient method for monitoring fault conditions (over temperature,
control/RF circuitry failure, etc.) and adds, remote keyswitch (relay or switch), and remote LED indicator
capability. These signals allow you to connect remote keyswitch, LASE, and ready (PWR) indicators to a
remote operator’s station or connect a remote interlock safety switch to interlock equipment doors or
panels.
Important Note: You can control 32-1 lasers from an alternate user supplied PWM signal source.
See Controlling laser power in the Technical Reference chapter for control signal descriptions.
Warning: Serious Personal Injury
The UC-2000’s default gate logic is factory set to internal Pull-Up (normally on) mode so that an
open (disconnected) Gate input causes the laser to turn on. This functionality allows the user to easily
test and verify laser operation prior to integration.
In an integrated system, you should configure the UC-2000’s gate input logic to internal Pull-Down
(normally off) mode. This prevents the beam from being enabled unless a high level (+3.5 V to +5.0
VDC) signal is applied to the Gate input connector. In the Pull-Down (normally off) mode, an asserted
logic low signal, short circuit to ground, or an open or disconnected Gate input locks the beam off.
Caution: Possible Equipment Damage
Do not ground the Remote Keyswitch input to an external circuit— this will damage laser circuitry.
Any external circuit(s) connected to these terminals must be floating with respect to ground. We
recommend using “dry circuit” (zero voltage) switches or relay circuitry.