Additional control functions, Redundant actual value feedback, Configuration – Lenze EDS4900U-REG User Manual

Page 139

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Configuration

7-48

48XX/49XXSHB0399

Cascading factor

The cascading factor directly influences the set-value at the input Dig_In_1 (X5).
Encoder adaptation (C025 = -1-) under C026, C027 and C028.

The following constants can be adjusted under C026:

8192 incr./rev.

4096 incr./rev.

2048 incr./rev.

1024 incr./rev.

512 incr./rev.

Cascading constants, which cannot be represented as a power of two, can be
assigned under C027 / C028. The following relation applies:

C 026

Encoder constant

=

C 028

C 027

Setting range of the factors:

( C027 from -3.2767 to +3.2767
( C028 from +0.0001 to +3.2767.
The quotient is limited to max.

–32767.

Note!

For the largest possible internal resolution, set C026 = -0- (8192 incr./rev.) and
under C027 the value +0.8192 (8192 incr./rev. divided by 10,000) should be set.
Indicate the effective encoder constant, which is evaluated with the divisor
10,000, under C028.

Example:
Encoder = 4000 incr./rev.
C026 = - 0 -
C027 = 0.8192
C028 = 0.4000

Set-value conditioning of the slave

The value read from Dig_In_1, evaluated with C026, C027 and C028, forms the
set-value (speed and phase) for the internal control and is also the output value
at the digital frequency output.

The set-value for the corresponding drive can be evaluated by the gearbox factor
C032 and C033.

The direction of the slave can be changed with the CW/CCW changeover. If the
direction of rotation is changed while the machine is running, pulse losses, which

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