Synrad Novanta OEM ti Series, User Manual

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INPUT SIGNALS PAGE | 54
Input signals
Four inputs allow control of ti-Series lasers. Remote Reset/Start Request, Remote Interlock, and Shutter
Open Request inputs are optoisolated and bi-directional to allow positive or negative polarity inputs.
These three signals share a common return, Input Common, which is separate from chassis ground to
completely isolate control signals for optimal EMI performance. The fourth input, PWM Input, is
optoisolated with a separate return line, PWM Return, to isolate PWM signals from the other three inputs.
Table 4-5 Input signal table.
Important Note: When connecting field wiring to the Remote Reset/Start Request input, use
twisted pair and/or shielded cabling. Refer to NOVANTA Technical Bulletin #21 for details.