Which products are affected?
EPL-10200 (Drive PLC V8.1)
Function description
The PowerUpControl (PWRUP) system block has been added to the control configuration.
Applications
Older Drive PLC versions activate an U15 trip if the 24V supply voltage falls below 16.5V. The PLC program will not be restarted as long as this trip is pending.
The PWRUP_bWaitFor24V_b system variable is included in the new PowerUpControl system block. If this variable is TRUE the Drive PLC does not carry out a reinitialisation before a voltage larger 17.5V is applied. In this case an U15 trip is not activated and the PLC program can be started.