2 Step Control Adder For Infinitely Variable
$138.66
2-step infinitely variable speed control adder for Harrington NER and ER series dual speed hoists with VFD control. It is added to the dual speed price, once for each infinitely variable directional axis.
It uses a 2-step button and the VFD to control the speed. Unlike standard dual speed control, releasing the button from the second step to the first holds whatever speed the hoist had reached, so any speed between low and high can be held. To go faster, press the button to the second step again; there is no deceleration function other than releasing the button completely. The acceleration rate can be changed through the VFD's parameters.
