Efficient Networks Siemens Sinamics S120 - Manual (Page 523)

Basic information about the drive system
12.12 System sampling times
Drive Functions
Function Manual, (FH1), 07/2007 Edition, 6SL3097-2AB00-0BP4
523
Vector control (cycles for EPOS: Position controller cycle = 1 ms / IPO cycle = 4 ms)
● Vector without additional Function Modules
– 2 drives (sampling times: current controller 250 µs / speed controller 1000 µs)
– 4 drives (sampling times: current controller 500 µs / speed controller 2000 µs)
● Vector with Function Module basic positioner (EPOS)
– 2 drives (sampling times: current controller 250 µs / speed controller 1000 µs)
– 3 drives (sampling times: current controller 500 µs / speed controller 2000 µs)
● Vector V/f without additional Function Modules
– 6 drives (sampling times: current controller 400 µs / speed controller 1600 µs)
– 8 drives (sampling times: current controller 500 µs / speed controller 2000 µs)
The details for the vector drives include:
● 1 Active Line Module with 250 µs (also applies to Chassis)
● 1 motor encoder per drive (not with vector U/f)
● 1 Terminal Module TM31 or 1 Terminal Board TB30 with 1 ms sampling time
Mixed operation
● Mixed operation: servo and vector V/f
– 5 drives (sampling times: current controller 125 µs / speed controller 125 µs,
current controller 400 µs / speed controller 1600 µs)
● Mixed operation: vector and vector V/f
– 2 drives (sampling times: current controller 250 µs / speed controller 1000 µs, current
controller 250 µs / speed controller 1000 µs)
– 4 drives (sampling times: current controller 500 µs / speed controller 2000 µs, current
controller 500 µs / speed controller 2000 µs)
12.12 System sampling times
12.12.1 Description
The software functions installed in the system are executed cyclically at different sampling
times (p0115, p0799, p4099).
The sampling times of the functions are automatically pre-assigned when configuring the
drive unit.
The settings are based on the selected mode (vector/servo), the number of connected
components, and the functions activated.
The sampling times can be adjusted using parameter p0112 (sampling times, pre-setting
p0115), p0113 (pulse frequency, minimum selection) or directly using p0115.