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ML1100 Analog Outputs

ML1100 Analog Outputs

ML1100 Analog Outputs

(OP)
We're using an ML1100-BB on an industrial blower and have a couple of servos (http://invenscience.com/index_files/Page923.htm) that are controlled using a PID and the PWM. The servo manufacturer has put a voltage divider on-board for us to allow us to use the full 0-24v range of the PWM's, however, I've found that after looking at the wave on the scope, that we require a pull-down resistor between the signal terminal and ground or else we get odd outputs to servo because of a square wave that doesn't fully reach 0v. Is this normal and could we cause any harm to the controller by doing this? We're using a 1k resistor.

Thanks for any help.

-Ian

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