NORD Drivesystems BU0200 User Manual

Page 55

SK 200E Manual for frequency inverters

Subject to technical alterations

BU 0200 GB-4411

2.8.5

Colour and contact assignments for incremental encoders (HTL)

Function

Wire colours,

for incremental encoder

Assignment for SK 2xxE

24V supply

brown / green

43 (/44) 24V (VO)

0V supply

white / green

0V (GND)

Track A

brown

DIN2

Track A inverse (A /)

green

Track B

grey

DIN3

Track B inverse (B /)

pink

Track 0

red

Track 0 inverse

black

The cable shield

should be connected to a wide area of the frequency inverter housing

Only the digital inputs DIN2 and DIN 3 of the frequency inverter are able to process the signals from an HTL
encoder. For the use of an encoder, parameters (P300) or (P600) must be activated according to
requirements (speed feedback / servo mode or positioning).

ATTENTION

By means of an OR link of the parameterised functions and the rotary encoder evaluation, which
is always active in the inverter, it is essential to switch off the functions of the digital inputs DIN 2
and DIN 3 for the use of a rotary encoder (Parameter (P420 [-02, -03] or via dip-switch (Section
5.2.2.2)).

NOTE:

The data sheet accompanying the encoder should be observed.

RECOMMENDATION: For good reliability, especially with long connecting cables, an incremental encoder

for 10-30V supply voltage should be used. Either an external or the internal 24V
voltage can be used for the supply. 5V encoders should not be used! With the use
of a type SK-xU4-24V... mains unit, the power restriction of the mains unit should be
noted (Encoder current consumption: up to 150mA).

NOTE

The direction of rotation of the incremental encoder must correspond to that of the motor.
Therefore, according to the direction of rotation of the encoder relative to the motor (this may
be inverted) a positive or negative pulse number must be set in parameter (P301).

ATTENTION

It is essential to insulate unused wires (e.g. Track A inverse / B inverse).

Otherwise, contact between these wires or to the cable shielding may cause short circuits,
which may interfere with the encoder signal or destroy the encoder.