
Model 4481
Model 4481 Two-Hand Switch Monitor with Adjustable Timed Output The Nolatron Model 4481 anti-tiedown switch monitor provides two-hand start control for machine applications which use single-pole hand sensing devices. The 4481 is unique in that the length of time of its pulse output can be adjusted by a potentiometer knob which is located on the outside of the control. Features: Anti-tiedown – The 4481 requires an operator to have both hands on start switches in order to start machine operation. This minimizes the possibility of the operator starting the machine while his hand is in the work area. Control Reliability – The 4481 is designed to meet the OSHA classification of “control reliability” as defined in section 1910.217(13). Redundant Output Contacts – The 4481 uses double “positive guided” output relays. Each relay is checked for proper status prior to beginning a machine cycle. Hand Switch Inputs – The 4481 is designed to interface with dry contact single pole hand switches and