Manualshelf

Specifications

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The block supports automatic and manual operating modes. The automatic and manual mode are -- activated
by the HMI when the mode is remote. The Manual mode is activated on PLC cold start. The local mode can also
be activated by an input pin either in automatic or in manual mode. The local mode inhibits the command from
process and HMI.
In the automatic mode the motor is started and stopped via the inputs ARun, if the local mode is not activated.
If the operation mode is changed from automatic mode to manual mode, the motor continues in the same way,
run to run, stop to stop. If the operation mode is changed from manual mode to automatic mode, the motor will
follow the commands from the process.
If the operation mode is changed from Remote to Local, the motor will stop but the local hardware command will
lead the stop or the run on starter terminal block. If the operation mode is changed from Local mode to Remote
mode, the motor will follow the commands from the process or from HMI.
If the interlock input Lock is set to 0, the motor is running. An active interlock signal inhibits the start of the motor
or stops a running motor. The motor is restarted when the interlock signal returns to 0 and the appropriate
signals are still set (ARun or HMI command still on 1 or no stop by 0).
If the output Error is set to 0, the motor is running. An active interlock signal inhibits the start of the motor
or stops a running motor. The function block sets the error signal, if the error input Ext_Err is set to 1 (external
error) or in case of an invalid operation mode, a missing feedback signal or an internal error of the starter
(internal error). The errors are indicated in the HMI as alarms. To reset the error output, the error has to be
acknowledged by a rising edge on the input Ackn or by using HMI_pump structure.
If monitoring the minimum time between a stop and a start (Min_time_stop <>0), the motor will be authorized to
restart only when the Time_to_start =0.
3-Application design
Software design
DFB design
(cont’d)