Usb Connection With The Automation Pc 3100 - B&R Automation PC 3100 User Manual

10.2.6.5 USB connection with the Automation PC 3100

10.2.6.5.1 Introduction
The information below describes the use of USB peripheral devices on USB interfaces 1, 2, 3 and 4 of the B&R
Automation PC 3100 in hazardous locations Class I, Division 2, Groups A, B, C and D.
Danger!
EXPLOSION HAZARD
• Before installation or use in potentially explosive atmospheres, the explosion protection class
of the device must be checked according to ANSI/ISA 12.12.01 and CSA C22.2 N°213.
• To switch on/off B&R devices that are installed in potentially explosive atmospheres, at least
one of the following measures must be taken:
° The switch is positioned outside the potentially explosive atmosphere.
° A switch certified according to the hazardous location class and division for "tube use"
is used.
• As long as the electrical circuit is activated, cables or lines are not permitted to be connected or
disconnected unless the area is knowingly free of flammable concentrations of vapors, gases
and other flammable or combustible materials. This applies to all connections and circuits. This
includes power, ground and network connections as well as series and parallel connections.
• Unshielded/Ungrounded cables are never permitted to be used in potentially explosive atmos-
pheres.
• Only configurations with nonincendive USB devices are permitted to be used.
• The doors and openings of housings must always remain closed. This prevents the accumula-
tion of foreign bodies within the workstation.
Failure to follow this instruction can result in death, serious bodily injury or damage to property!
10.2.6.5.2 Description
Nonincendive devices (keyboards, mouse) are certified for use on the rear USB interfaces of the B&R Automation
PC 3100 (connected device) and are permitted to be connected and disconnected during operation. In addition to
the nonincendive property, devices that can be connected to the 4 USB interfaces must meet the following criteria.
The figure shows a sketch of the wiring of the USB cable:
The following tables indicate the nonincendive electrical circuit parameters:
USB1, USB2, USB3 and USB4 interfaces (USB 3.0):
Open-circuit voltage [V ]
oc
Short-circuit current [I ]
sc
Connected capacity [ ]
Ca
Connected inductance [ ]
La
Table 153: Nonincendive electrical circuit parameters for the USB1, USB2, USB3 and USB4 interfaces
Automation PC 3100 User's manual V 2.10
Connected device
USB 1-4 (3.0) pinout
1. Vcc
2. D-
3. D+
4. GND
5. StdA_SSRX-
6. StdA_SSRX+
7. GND_DRAIN
8. StdA_SSTX-
9. StdA_SSTX+
Shield GND
9 8 7 6 5
Class I, Division 2
Group A, B, C, D
or non-hazardous location
5.0 V
8.06 A
20 μF
4.8 μH
International and national certifications
Nonincendive device
with field wiring
USB cable USB peripheral
devices
Class I, Division 2
Group A, B, C, D
235