Installation
Operating Instructions MT-xx6-A
R. STAHL HMI Systems GmbH / OI_MT_xx6_A_en_V_03_00_26.docx / 03.11.2020
Page 29 of 60
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 MT-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 MT-xx6-A-* interfaces can
be found in
11.4.1
USB interfaces USB0, USB2
The USB0 and USB2 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
USB interfaces USB1, USB3
The USB1 and USB3 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 USB interfaces
The two USB1 and USB3 interfaces have an identical structure.
If intrinsically safe devices are connected to the non intrinsically safe
USB interfaces of the MT-xx6-A-* HMI devices, R. STAHL Systems
GmbH cannot guarantee that the intrinsic safety of these devices will
continue to apply.
The following versions are possible:
1. If a USB device that is not connected to the mains is connected, voltage can be supplied
from the internal power supply (terminal 1).
2. If a USB device that is connected to the mains is connected, the internal power supply
(terminal 1) must not be connected. The power must be supplied from an external device.
DOCUMENTATION
ATTENTION
ATTENTION
