nord NORDAC FLEX SK 2 E-111-123-A Series, Руководство пользователя

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2 Mounting and installation
BU 0200 en-US-4920 75
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2.5 Color and contact assignments for the incremental encoder (HTL)
Function
Wire colors,
for incremental encoder
1)
Assignment for SK 2xxE
24V supply brown/green 43 (/44) 24V (VO)
0V supply white/green 40 0V (GND)
Track A brown 22 DIN2
Track A inverse (A /) green --
Track B gray 23 DIN3
Track B inverse (B /) pink --
Track 0 red 21 DIN1
Track 0 inverse black --
Cable shield Large-area connection to variable frequency drive housing.
1) Wire colors depend on the type of encoder and may differ. Please note the encoder data sheet !
Note the current consumption of the encoder (normally up to 150 mA) and the permissible load on the
voltage source.
Only digital inputs DIN 2 and DIN 3 are in a position to process the signals of an HTL encoder. To use
an encoder, activate parameters (P300) and/or (P600) according to requirements (speed
feedback/servo mode or positioning).
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Information
DIN 2 and DIN 3 double allocation
Digital inputs DIN2 and DIN3 are used for 2 different functions:
1. for digital functions that can be parameterized (e.g. “enable left”),
2. for evaluation of an incremental encoder.
Both functions are coupled by an OR link.
Evaluation of an incremental encoder is always activated. This means that when an incremental encoder is
connected, make sure that the digital functions are switched off (parameter (P420 [-02] and [-03]) or with DIP
switch (chapter 4.3.2.2)).
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Information
Rotation direction
The "counting direction" of the incremental encoder must correspond to the direction of rotation of the motor. If the
two directions are not identical, the connections of the encoder tracks (track A and track B) must be switched.
Alternatively, the resolution (line number) of the encoder can be set with a negative prefix in the
P301 parameter.
Information
Encoder signal faults
Wires that are not required (e.g. track A inverse/B inverse) must be insulated.
Otherwise, if these wires come into contact with each other or the cable shield, short circuits can occur that can
cause encoder signal problems or destruction of the encoder.
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If the rotary encoder has a zero track, connect this to digital input 1 of the device. The zero track is
read out by the variable frequency drive if parameter P420 [-01] has been set to function 43.
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