6
6.4
Input/output terminals of the control board
6-505
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SIMODRIVE 611 universal Description of Functions (FBU) – 04.05 Edition
Table 6-49
List of output signals, continued
Operating
mode
Signal name, description
PROFIBUS bit
pos
n–set
Fct. No.
| M | < M
x
3
x
x
MeldW.1
This output signal indicates whether the absolute torque | M | is less than or greater than the selected
torque (M
x
, P1428). The value refers to the actual torque limiting when motoring including all limits (refer
to Chapter 6.1.8, Fig. 6-7).
The evaluation | M | < M
x
is only realized in the n–set mode, if
The ”ramp–up completed” status is signaled
and
The delay time in P1429 has expired.
1 signal
0 signal
| M | > M
x
| M | < M
x
| n
set
|
| M |
t
t
M
x
1 signal
0 signal
| M | < M
x
P1429
Ramp–up completed
| M | < M
x
M
x
(P1428)
From here, evaluation
of | M | < M
x
Application:
Using this signal, a motor overload condition can be detected in order to be able to introduce an appropri-
ate response (stop the motor or reduce the load).
Note:
In the pos mode, the ”ramp–up completed” state is always signaled, i.e. the delay time in P1429
has already expired. The signal | M | < M
x
immediately changes the signal state. Only when the
delay time in P1429 changes, is the signal | M | < M
x
output delayed by this time.
| n
act
| < n
x
4
x
x
MeldW.3
This output signal is used to display as to whether the absolute actual speed (| n
act
|) is less than or
greater than the selected threshold speed (n
x
, P1417:8).
n
x
n
x
(P1417:8)
t
1 signal
0 signal
| n
act
|
| n
act
| < n
x
| n
act
| > n
x
| n
act
| > n
x
| n
act
| < n
x
Fixed hysteresis= 12 RPM
Application:
Speed monitoring
6 Description of the Functions
01.99
! 611ue diff !
08.01
06.04
