Overload Relay" Control Function - Siemens SIMOCODE pro Operating Manual

Parameters
4.2 Motor control
4.2.2.3

"Overload relay" control function

Description
With this control function, SIMOCODE pro functions like a solid-state overload relay. Control
commands (e.g. ON, OFF) cannot be issued to the load. Control stations and inputs of the
control function (e.g. ON >, OFF), do not have any function in the case of overload relays.
When the control voltage is applied, SIMOCODE pro automatically closes the QE3 contactor
control; it remains active until it is deactivated by the fault message of a protection or
monitoring system.
The QE3 contactor control must be connected to any relay output that switches off the
contactor coil of the motor contactor in case of overload.
Schematic
Figure 4-14
72
Schematic of the "Overload relay" control function, "Protection / Control" function block
SIMOCODE pro - Parameterize
Operating Manual, 04/2017, A5E40507630002A/RS-AA/001