Limitation After Ramp-Function Generator - Siemens 6RA7086-6KS22 Operating Instructions Manual

05.05
9.4.7

Limitation after ramp-function generator

Since the input signal can be freely selected, this limiter stage can be used completely independently
of the ramp-function generator.
A special feature of this limiter is that the lower limit can also be set to positive values and the upper
limit to negative values (see P300 and P301). This type of limit setting then acts as a lower limit
(minimum value) for the ramp generator output signal in the other sign direction.
Example: P632.01-04 = 1 (= 100.00%)
P300 = 100.00 (%)
P301 = 10.00 (%)
P633.01-04 = 9 (= -100.00%)
results in a limitation of the value range for K0170 to between +10.00% and +100.00%
9.4.8 Velocity signal dv/dt (K0191)
This signal specifies the change in the ramp-function generator output K0190 in the time period set in
P542.
9.5 Inching
See also Section 8, Sheet G129
The INCHING function can be preset via the binectors selected with indices .01 to .08 of parameter
P435 or via bits 8 and 9 of control word 1 (logic operation, see function diagram in Section 8).
When the control word option is used, the following operating modes are possible (see also Section 8,
Sheet 33):
P648 = 9:
P648 ≠ 9:
The "Inching" function can be executed only if "Shutdown" and "Operating enable" are applied.
The "Inch" command is input when one or several of the named sources (binectors, bits in control
word) change to the log. "1" state. In this case, a setpoint selected in parameter P436 is assigned to
each source.
An inching setpoint of 0 is applied if the inch command is input by two or more sources
simultaneously.
Parameter P437 can be set to define for each possible inch command source (binector, bit in control
word - logic operation, see block diagram in Section 8) whether or not the ramp-function generator
must be bypassed. When the ramp generator is bypassed, it operates with ramp-up/down times of 0.
Sequence of operations for entering Inching command:
If the "Inch" command is entered, the line contactor is energized via the "Line contactor closed" relay
and the inching setpoint applied via the ramp-function generator (for exact sequence, see the
description of "Switch-on / Shutdown" in Section 9.3.3).
Sequence of operations for cancellation of Inching:
After the "Inch" command has been cancelled, the sequence of operations commences in the same
way as for "Shutdown" (see Section 9.3.3). After n < n
disabled and the line contactor opened after a parameterizable delay (P085) of between 0 and 60 s
(operating state 07.0 or higher). The drive remains in operating state 01.3 while the parameterizable
delay period (max. 60.0 s) runs down.
SIEMENS AG 6RX1700-0AD76
SIMOREG DC Master Operating Instructions
The control bits in control word 1 are input bit-serially. The binectors selected in P668
and P669 determine bits 8 and 9 of control word 1 and thus the input of the INCH
command.
The connector selected in P648 is used as control word 1. Bits 8 and 9 of this word
control the input of the INCH command.
has been reached, the controllers are
min
Function descriptions
9-15