BECKHOFF CP39xx - Manual (Page 22)

Operating Instructions
5.2.1 Setting the transmission rate
At large distance between PC and Control Panel, the transmission rate of the DDC file has to be limited.
The DDC file is transmitted from the Control Panel to the PC in order to transfer the display information
like timing and resolution.
The video bios of the graphic card or, using the on-board graphic, the video bios of the motherboard
contains the definition of the transmission rate for the DDC file. This value has to be 50 kHz or less.
Otherwise the screen is not displayed or not until windows is started.
Windows graphic drivers also include a value for the transmission rate of the DDC file.
If Windows is running and no image is displayed, then use a graphic driver with a value of 50 kHz or less
for DDC file transmission.
5.3 Servicing and maintenance
5.3.1 Cleaning
Disconnect power supply
DANGER
Switch off the device and all connected devices, and disconnect the device from the
power supply.
The device can be cleaned with a soft, damp cleaning cloth. Do not use any aggressive cleaning
materials, thinners, scouring material or hard objects that could cause scratches.
5.3.2 Maintenance
The Control Panel is maintenance-free.
5.4 Emergency procedures
In case of fire, the Control Panel should be extinguished with powder or nitrogen.
5.5 Shutting down
5.5.1 Disposal
Observe national electronics scrap regulations
Note
Observe the national electronics scrap regulations when disposing of the device.
In order to dispose of the device, it must be removed and fully dismantled:
• Housing components (polycarbonate, polyamide (PA6.6)) are suitable for plastic recycling.
• Metal parts can be sent for metal recycling.
• Electronic parts such as disk drives and circuit boards must be disposed of in accordance with
national electronics scrap regulations.
20 CP39xx