5 features of set-value 2, 6 offset and gain adjustment – Lenze 8615E User Manual

Page 68

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3.5

Features of set-value 2

Set-value 2 can only be provided via the differential input
X1/terminals 1,2, independently of the selected operating mode
(C001). Its value can only be displayed in per cent under code
C049.

Set-value 2 is processed first by a special ramp generator, before it
is added to set-value 1.The ramp times of the ramp generator are
set separately via C220 and C221.

Code

Parameter

Meaning

Acceptance

C220

5.0s
0.0 to 990s

Acceleration time for set-value 2

ON-LINE

C221

5.0s
0.0 to 990s

Deceleration time for set-value 2

ON-LINE

In the factory-set configuration C005 = -0-, set-value 2 is not
active. If you want to use set-value 2, e.g. as additional set-value,
you have to select another configuration and to set the gain of the
set-value channel correspondingly.

Please also note that set-value 2 is set to zero as long as a JOG
frequency is active.

3.6

Offset and gain adjustment

Using these functions you can eliminate undesired distortions of the
analog input channels and adapt the connected encoder.

Offset
To compensate offset errors, first apply the signal for the set-value
or feedback = 0. Then select under C025 the corresponding analog
input. Adjust the offset correction under C026 such that the internal
display is also set to zero.
Internal offset faults are already adjusted before delivery.
Your changes will not be reset when loading the factory setting
(C002 = -0-).

Input

Display code

Meaning

X1/terminals 1,2
X1/terminals 3,4
X1/terminal 8

C049
C051
C046

Set-value 2
Actual value
Set-value 1

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