EP5101 - Interface signal level

In differential mode the encoder input expects signal levels conforms to RS422 / RS485. The data are transferred without ground reference as voltage difference between two cables (signal A and inverted signal /A). The encoder input analyses differences greater than 200 mV as valid signals. The differential signal must be in the common mode range (<+13.2 V and >-10 V, with respect to GND) (cf. diagram). Signal levels outside this range can lead to destruction

In differential mode only the voltage difference is evaluated, so that common-mode interference on the transmission link does not lead to corruption of the wanted signal, since any interference affects both cables simultaneously.

In single-ended mode the encoder input expects a signal level of nominally 3.5 V to 5.5 V.

A differential signal level between -1.5 V and +1.5 V is detected as wire breakage.