Emergency Start - Siemens SIMOCODE pro System Manual

10.7

Emergency start

Description
Emergency start deletes the thermal memory from SIMOCODE pro each
time it is activated. This allows the motor to be immediately restarted after
an overload trip. This function can be used to:
– Enable a reset and start up the motor again immediately after an overload trip
– Delete the thermal memory (motor model) during operation, if required.
Caution
If emergency starts are carried out too frequently this may lead to thermal
overloading of the motor!
Since emergency start is
edge-triggered, this function cannot permanently affect the thermal motor
model. An emergency start is carried out as follows:
• Via the plug of the function block. To do this, the input (plug) of the function
block must be connected to an arbitrary socket (e.g. device inputs, control
bits from PROFIBUS DP , etc.).
The "Emergency Start" function block consists of:
• One plug
• One "Status - Emergency start executed" socket. This is set when the
emergency start is carried out.
Overall, there is one "Emergency Start" function block for BU1 and BU2 .
Schematic
The following schematic shows the "Emergency Start" function block:
1) The "Emergency start executed" signal is triggered by the edge (input) and reset
when the current flows.
Fig. 10-8: Function block "Emergency Start"
Settings
Emergency start
Input
Table 10-11: Emergency start settings
SIMOCODE pro
GWA 4NEB 631 6050-22 DS 03
Emergency start
Input
Activate the "Emergency Start" function block from any signal (any
sockets ,
e.g. device inputs, control bits from PROFIBUS DP , etc.)
Standard functions
Status -
Emergency start
1)
executed
Description
10-17