Creep - Siemens SINAMICS DCM Operating Instructions Manual

Descriptions of functions
10.9 Setpoint channel
10.9.3

Creep

See also function diagram 3130 in the SINAMICS DCM List Manual.
The "Creep" function can be activated in operating state o7 and the "Operation" state while
"Operation enable" applies.
"Creep" is applied by means of one or more of the binectors selected using p50440 entering
the log. "1" state. During this, each binector is assigned a setpoint (to be selected using
p50441). If "Creep" is applied by several binectors, their corresponding setpoints are added
together.
For each source (binector) with which the "Creep" function can be applied, p50442 may be
used to determine whether the ramp-function generator is bypassed (binector r53170.12). In
this case, the ramp-function generator operates with ramp-up time = 0 and ramp-down time
= 0.
Level/Edge
P50445 = 0: Level-controlled
P50445 = 1: Edge-triggered
Procedure for applying creep:
If "Creep" is applied in operating state o7, the system is switched on and the creep setpoint
is applied via the ramp-function generator.
If "Creep" is applied in the "Operation" state, the drive uses the ramp-function generator to
travel from the operating speed to the creep setpoint.
Procedure for withdrawing creep:
For "Creep" when the "Switch on" command is not present:
If all binectors that apply the "Creep" function enter the log. "0" state, the controller is
disabled and the line contactor is opened (operating state o7.0 or higher) after n < nmin.
For "Creep" from the "Operation" state:
If all binectors that apply the "Creep" function enter the log. "0" state, and the conditions for
the "Operation" state are still present, the drive uses the ramp-function generator to travel
from the set creep speed to the operating speed.
See also the section titled "Switch on/Switch off (ON/OFF1)" for information on edge
triggering, automatic restart, and the effect of current and torque limits when decelerating.
380
Binector selected using p50440= 0: No creep
Binector selected using p50440= 1: Creep
The application of the "Creep" function is saved when the binector makes
the 0 → 1 transition. The binector selected using p50444 must be in the log.
"1" state at this point. The memory is reset when this binector enters the log.
"0" state.
SINAMICS DCM Control Module
Operating Instructions, 06.2010, C98130-A7067-A1-02-7619