Nolatron’s anti-tiedown controls are used in conjunction with two start switches to help protect machinery operators. The 3380 series helps to comply with OSHA, which requires a machine operator to have both hands on the start switches in order to start a machine cycle. This minimizes the possibility of the operator starting the machine while one hand is in the work area.

Both start switches must be activated within a fixed time interval to energize the output. This prevents an operator from “tying down” one of the switches while continuing to operate the machine.

The 3380 uses redundant positive guided output contacts which are cross-checked before every machine cycle. A single component failure will cause the control to shut down in a safe mode.

Models

Image	File Type	Operation
	Model 3380	MOMENTARY OUTPUT / MAINTAINED OUTPUT
	Model 3380-C	MOMENTARY OUTPUT / MAINTAINED OUTPUT
	Model 3380-T	Momentary Output
	Model 3381	TIMED OUTPUT / DELAYED TIMED OUTPUT / MAINTAINED TIMED OUTPUT / MAINTAINED AND DELAYED TIME OUTPUT
	Model 3370 & 3371 - Discontinued	The model 3370 is no longer available but it has been replaced with a different model switch monitor. Pin for pin compatibility – Depending on the use of pin 4, either model 3380 or model 3380-C can be used to replace the 3370 series controls with no modification to wiring. Model 3380 replaces models 3370 and 3370-M, if the normally closed contact (pin number 4) on the 3370 is not being used. Model 3380-C replaces models 3370 and 3370-M, if the normally closed contact (pin number 4) on the 3370 is being used. Model 3381 replaces model 3371.

Downloads

Document	File Type	File Size	Download
3380 Series Datasheet	PDF	586 KB