Direct Setpoint Specification (Mdi) - Siemens SINAMICS S150 Operating Instructions Manual

Function diagram
FD 3616
FD 3617
FD 4025
Parameter
• p1528
• p1529
• p1545
• r2526
• p2622
• p2634
• p2635
• p2637
• p2638
• r2683
• r2686
9.4.6.7

Direct setpoint specification (MDI)

Description
The direct setpoint input function allows for positioning (absolute, relative) and setup
(endless position-controlled) by means of direct setpoint input (e.g. via the PLC using
process data).
During traversing, the motion parameters can also be influenced (on-the-fly setpoint
acceptance) and an on-the-fly change can be undertaken between the Setup and Positioning
modes.
The direct setpoint specification operating mode (MDI) can also be used in positioning or
setup mode if the axis is not homed. This means that on-the-fly synchronization and re-
homing can be carried out with "flying referencing" (see separate section).
The direct setpoint input function is activated by p2647 = 1. A distinction is made between
two modes: positioning mode (p2653 = 0) and setup mode (p2653 = 1).
In "positioning" mode, the parameters (position, velocity, acceleration and deceleration) can
be used to carry out absolute (p2648 = 1) or relative (p2648 = 0) positioning with the
parameter p2690 (fixed setpoint position).
In the setting-up mode, using parameters (velocity, acceleration and deceleration) "endless"
closed-loop position control behavior can be carried-out.
Drive converter cabinet units
Operating Instructions, 07/07, A5E00288214A
Traversing blocks mode (r0108.4 = 1)
Traversing to fixed stop (r0108.4 = 1)
Dynamic following error monitoring, cam controllers (r0108.3 = 1)
CI: Torque limit, upper/motoring, scaling
CI: Torque limit, lower/regenerative scaling
BI: Activates travel to fixed stop
CO/BO: LR status word
EPOS traversing block, order parameter
EPOS Fixed stop maximum permissible following error
EPOS Fixed stop monitoring window
BI: EPOS Fixed stop reached
BI: EPOS Fixed stop outside monitoring window
CO/BO: EPOS status word 1
CO: EPOS Torque limit effective
Functions, monitoring, and protective functions
9.4 Extended functions
393