Function modules
8.8 Basic positioner
Drive functions
510
Function Manual, 11/2017, 6SL3097-4AB00-0BP5
Figure 8-14 Modulo offset
A modulo axis has an unrestricted traversing range. The value range of the position repeats
itself after a specific value that can be parameterized (the modulo range or axis cycle), e.g.
after one revolution: 360° -> 0°. The modulo range is set in parameter p2576, the offset is
activated with parameter p2577. The modulo offset is undertaken at the setpoint end. This is
provided with the correct sign via connector output r2685 (correction value) to appropriately
correct the actual position value.
EPOS initiates the activation of the correction via a rising edge of binector output r2684.7
(activate correction) (r2685 (correction value) and r2684.7 (activate correction) are already
connected as standard with the corresponding binector/connector input of the actual position
value processing). Absolute positioning details (e.g. in a traversing task) must always be
within the modulo range. Modulo offset can be activated for linear and rotary length units.
The traversing range cannot be limited by a software limit switch.
With active modulo offset and the application of absolute encoders, as a result of potential
encoder overflows, it must be ensured that there is an integer ratio v between the multiturn
resolution and the modulo range.
The ratio v can be calculated as follows:
●
Motor encoder without position tracking:
v = p0421 · p2506 · p0433 · p2505 / (p0432 · p2504 · p2576)
●
Motor encoder with position tracking for the measuring gear:
v = p0412 · p2506 · p2505 / (p2504 · p2576)
●
Motor encoder with position tracking for the load gear:
v = p2721 · p2506 · p0433 / (p0432 · p2576)
●
Motor encoder with position tracking for the load and measuring gear:
v = p2721 · p2506 / p2576
●
Direct encoder without position tracking:
v = p0421 · p2506 · p0433 / (p0432 · p2576)
●
Direct encoder with position tracking for the measuring gear:
v = p0412 · p2506 / p2576
With position tracking it is recommended to change p0412 or p2721.
Содержание SINAMICS S120
Страница 1: ......
Страница 2: ......
Страница 24: ...Contents Drive functions 24 Function Manual 11 2017 6SL3097 4AB00 0BP5 ...
Страница 202: ...Servo control 4 21 Voltage precontrol Drive functions 202 Function Manual 11 2017 6SL3097 4AB00 0BP5 ...
Страница 296: ...Vector control 5 23 Asynchronous pulse frequency Drive functions 296 Function Manual 11 2017 6SL3097 4AB00 0BP5 ...
Страница 312: ...V f control vector control 6 5 Vdc control Drive functions 312 Function Manual 11 2017 6SL3097 4AB00 0BP5 ...
Страница 932: ......
Страница 1044: ...Appendix A 2 Documentation overview Drive functions 1044 Function Manual 11 2017 6SL3097 4AB00 0BP5 A 2 Documentation overview ...
Страница 1082: ...Appendix A 7 Functions of SINAMICS S120 Combi Drive functions 1082 Function Manual 11 2017 6SL3097 4AB00 0BP5 ...
Страница 1094: ......