2
018-
11
14
Installation
3
Installation
3.1
General Installation Requirements
■
The equipment must be installed by competent personnel in accordance with the
instructions. National laws and regulations must be observed.
■
The building installation must provide a 20 A overcurrent protection.
■
The installer must make a readily accessible disconnect device available.
■
The safety of any system incorporating the power suppply unit is the responsibility of the
assembler of the system.
3.2
Special Conditions of Use
■
Input power must be provided by a power supply that meets the requirements for safety
extra-low protective voltage (SELV) or protective extra-low voltage (PELV).
■
TCU/PCU must be mated with a suitably certified module, such as a DPU.
■
Connection of TCU/PCU and display shall only be made when de-energized.
3.3
Terminal Compartments
There are 3 terminal compartments on the back of the PCU/TCU:
■
Terminal Compartment
Ex e
contains the Ex e power supply interface, an Ex e USB
interface, an Ex e Ethernet interface, and an optional 1000-BASE-SX fiber-optic interface.
■
Terminal Compartment
Ex i
contains a terminal block for 2 Ex i USB connectors.
■
The third terminal compartment contains additional optional interfaces for user modules
(TTY, Ethernet, RS-232, or RS-485, and scanner options).
Figure 3.1
Terminal compartments
Danger!
Danger of Explosion
Disconnecting cables too quickly may trigger an ignition, as device-internal cable capacitances
need some time to discharge.
After de-energizing, wait 3 minutes before opening the compartment room or disconnecting the
device from the display unit.
V+
V+
GND
GND
VCC
D-
D+
GND
.1
TX+/D1+
.2
TX-/D1-
.3
D3+
.4
D3-
.5
RX+/D2+
.6
RX-/D2-
.7
D4+
.8
D4-
.1
.2
.3
.4
.5
.6
.7
.8
P
o
w
er Supply
+24 VDC
USB Ex e
Ethernet Ex e
X1
VCC
D-
D+
GND
VCC
D-
D+
GND
.1
.2
.3
.4
.5
.6
.7
.8
USB Ex i
USB Ex i
X3
X2
.1
.2
.3
.4
.5
.6
.7
.8
.1
.2
.3
.4
.5
.6
.7
.8
Optional Modules
X4
X5
Terminal Compartment Ex e
Terminal Compartment Ex i
Terminal Compartment for optional modules
TTY
, Ethernet, R
S-232, or R
S-485
TX RX
Fiber
Optic
Note!
For entity parameters, see the EU-Type Examination Certificate. This document is available on
the TCU/PCU product pages at www.pepperl-fuchs.com.