Datasheet

Product Data Sheet ACI4400/2HHP
2/28/2019 page 7 of 14
3.3 Electrical Interface - Output
External voltage supply for input and output signals must be SELV conform.
Tacho type /2 (open collector)
Features Note Values
Tacho operating voltage <= 60 V
Tacho signal Low *) I sink: 0,5 mA <= 0,3 V
Tacho signal High *) I source: 0 mA <= 60 V
Maximum sink current 1,5 mA
External resistor
External resistor Ra from
UBS to US required. All
voltages measured to
GND.
Tacho frequency *) (2 x n) / 60
Tacho isolated from motor Yes