Operating Instructions ET-xx6-A
Installation
Page 28 of 60
R. STAHL HMI Systems GmbH / OI_ET_xx6_A_en_V_03_00_36.docx / 03.05.2021
Connection diagram with VB-USB-INST1 (hard disk, CD / DVD with power supply)
Direct connections to the HMI devices must be via VB-USB-INST1 !
Otherwise, the internal circuits may become damaged and the
explosion-protection of the HMI device may become compromised !
11.4 USB interfaces
The ET-xx6-A-* device series have 4 USB interface channels.
USB0 at X4 for the internal connection of a USB Drive.
USB1 at X5 for the connection of external USB devices.
USB2 at X6 for the connection of an external USB Drive.
USB3 at X7 for the connection of external USB devices.
The connection diagram for the ET-xx6-A-* interfaces can
be found in
11.4.1
I.S. USB interfaces USB0, USB2
The USB0 and USB2 I.S. interfaces (X4 and X6) are intended for the internal or external
connection of USBi Drives.
The maximum value for the joint power supply of USB0 and USB2 is 500 mA.
11.4.2
Ex e USB interfaces USB1, USB3
The USB1 and USB3 Ex e USB interfaces (X5 and X7) are intended for the connection of external
USB devices.
The maximum value for the joint power supply of USB1 and USB3 is 500 mA.
11.4.2.1
Connection variations for Ex e USB interfaces
The two Ex e USB interfaces have an identical structure. The X5 (USB 1) and X7 (USB 3)
terminals are for the connection of devices that can be both intrinsically safe or not intrinsically
safe.
If intrinsically safe devices are connected to the Ex e USB interfaces
of the ET-xx6-A-* HMI devices, R. STAHL Systems GmbH cannot
guarantee that the intrinsic safety of these devices will continue to
apply !
ATTENTION
DOCUMENTATION
ATTENTION