WEG PLC300, Руководство пользователя, Страница: 10 / 76

Introduction to PLC300
2-2 | PLC300
If during the update/saving of the firmware, the process is interrupted for some reason,
the message “Bootloader V6.xy” will be displayed on the screen and the red LEDs of the
Status, CAN and Serial will keep flashing. If that happens, just download the updated
firmware via WPS.
SD memory card (Secure Digital):
The PLC300 allows saving data and program, logging events, recipes in a SD memory card.
The memory card must be SD type with FAT32 formatting with capacity up to 32G. The
faster the card (class of the card), the shorter the recording time. This is important in case
of regular variable log recordings, for instance. It is recommended the use of class 10 cards.
Automatic Software Recovery - ASR:
It automatically recovers the PLC300 software, including configurations and retentive
markers.
See Section 9.2 AUTOMATIC SOFTWARE RECOVERY - ASR on page 9-7 of this manual.
RTC – Real Time Clock:
Real time clock that allows recording events such as alarms and logs, besides specific
blocks such as alarms or interruptions.
Digital, PWM and analog outputs:
8 digital, galvanically insulated, protected, 500 mA (each), 24 Vdc, PNP outputs.
The 10 bit analog output has independent terminals for current or voltage.
Fast output up to 300 kHz with capacity of 100 mA in 24 Vdc can be programmed in PWM.
It can be used as standard digital output.
Digital and analog inputs:
Ten isolated, digital inputs are available, at 24-Vdc level, able to produce interruption.
Two of them are fast and can be used to count pulses of up to 100 kHz, or as encoder
input in quadrature.
A 12-bit, differential, analog input is also available.
Encoder input:
Quadrature encoder input, with additional signals and detection of split cable with optional
alarm.
Maximum frequency: 100 kHz.