2
01
9-
06
10
Installation and Commissioning
3
Installation and Commissioning
3.1
General Installation Requirements
Devices being operated in connection with hazardous areas may not be changed or
manipulated. If there is a defect, the product must always be replaced with an original
part. If devices have been operated in general electrical systems, they must not
subsequently be operated in electrical systems related to explosive areas. The installation
of the intrinsically safe circuits has to be conducted in accordance with the relevant
installation regulations, particularly IEC/EN 60079-14.
The device must be mounted in the non-explosive hazardous area.
If Intrinsically safe circuits are connected to earth, there must exist equipotential bonding
along the intrinsically safe circuits.
3.2
Intrinsically Safe Wiring and Cable Parameters
Only use cables that meet the requirements of IEC/EN 60079-14 to connect to the terminals on
the barrier. The cable length from the barrier to the keyboard/mouse and from the barrier to the
host PC should not exceed 4.6 m. The total cable length should not exceed 6.1 m.
Wiring Information
Field terminals 1 ... 4 and 5 ... 8 are for connection to a USB or PS2 keyboard or mouse with
proper matching entity parameters. Connections 9 ... 12 are the host side USB/PS2 data signal
connections. These match the common named field connections (D+ D- keyboard are the
datalines to the keyboard connections on the field side, etc.). 13 and 14 are for connection to a
properly rated SELV supply voltage. Connections 15 and 16 are to be connected to ground. By
connecting the host USB cables, the connections 4, 8, 12, 14, 15, and 16 are grounded via the
host PC. The precondition for this is that the GND line of the PC USB connection is internally
connected to ground. This must be ensured by measurement.
Div. 2 / Zone 2
SK-PC-D2-UU1-10-HS
6+
7-
8-
5+
2+
3-
4-
1+
10-
11+
12-
9+
14-
15
16
13+
