Siemens SIMODRIVE 611 universal Function Manual page 357

01.99 04.05
! not 611ue !
Table 6-10 Restrictions for axis/encoder, continued
Axis/encoder
Rotary
axis
en-
dlessly
Absolute value
rotating
encoders
(modulo
rotary
axis)
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SIMODRIVE 611 universal Description of Functions (FBU) – 04.05 Edition
6.2 Positioning mode (P0700 = 3, from SW 2.1)
The encoder must be mounted onto the motor.
Important: Before SW 8.1:
The gear ratio cannot be freely selected.
The ratio between the encoder and load must be selected so that the full
range of encoder is an integer multiple of the modulo range.
The following condition must be fulfilled:
P0238:8
P1021 S S
P0237:8
P1021 Multi–turn resolution, abs. value enc. motor
P0238:8 Load revolutions
P0237:8 Encoder revolutions
P0242 Modulo range, rotary axis
Example: P1021 = 4096
P0237:0 = 64, P0238:0 = 72
P0242 = 360 000
are permitted, because 4096 S 72/64 S 360/360 = 4608 = is an integer
number
Note:
When a fault develops, fault 139 is signaled (modulo range and ratio do
not match).
From SW 8.1:
Any gearbox ratio can be selected. The following condition applies:
Modulo range, Endat encoder (traversing range) q modulo range, load
P0238:8
P1021 S
P0237:8
Prerequisites:
S
DC link has been connected
S
P1162>0 , e.g. 500 V for a controlled infeed
In order to supply the control board from the DC link, at the
infeed/regenerative feedback module, the DC link must be connected to
terminals M500 and P500 of terminal strip X181 (refer to
Reference/PJU/). This means that when the DC link voltage is either
removed or decreases, the energy saved in the DC link can be used to
maintain the closed–loop control for a specific time. When
powering–down or when the DC link voltage decreases, the supply for powering–down or when the DC link voltage decreases, the supply for
the closed–loop control must still be maintained until the data save
operation has been completed.
The thresholds to save the absolute value encoder data as a function of
the DC link voltage are shown in the following diagram. For reasons of
simplicity, the DC link charging and the decrease in the DC link voltage
are shown as linear characteristics.
VDC
link
P1164
P1162
6 Description of the Functions
Restrictions
360 000
= integer multiple
P0242
360 000
S q 1
P0242
Monitoring Save
active
6
t
6-357