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4 Commissioning
4.11 Direct measuring system for position control (from SW 3.3)
Limitations and
rules for a direct
measuring system
4-194
The following limitations and rules apply:
1. The direct measuring system may only be directly connected at the
load side without measuring gearbox.
2. Which combinations of power module and control board are pos-
sible for a direct measuring system?
– 1–axis power module with 2–axis control board
In this case, drive B is not available.
– 2–axis power module with 2–axis control board
Drive B is available.
The following applies: Switch drive B into a passive state (P0700
(B) = 0)
3. Which encoder systems are available for the direct measuring
system?
Dependent on the 2–axis board with encoder for sin/cos 1 Vpp or for
resolver, the following rotary or linear measuring systems can be
connected at X412:
– Incremental encoder with sin/cos 1 Vpp
– Absolute value encoder with EnDat protocol
– Resolver with any pole pair number
4. Process data for the direct measuring system
The actual values of the position controller can be read via status
word XistP.
5. The "direct measuring system" function is activated with P0250 (A)
= 1.
The following applies:
– This activation becomes effective after POWER ON
– The direct measuring system must have been commissioned
––> refer to "commissioning the direct measuring system"
– It is not permissible to operate drive A without a motor measuring
system.
––> The following must be valid: P1027.5 (A) = 0
– The input terminal I0.B (fast input from drive B) can be assigned
a function for the direct measuring system from drive A via
P0672.
e.g. the "Equivalent zero mark" function (P0672=79) or
"flying measurement" (P0672=80)
SIMODRIVE 611 universal Description of Functions (FBU) – 04.05 Edition
! not 611ue !
E Siemens AG 2005 All Rights Reserved
05.00
02.02
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