6
TRUNKGUARD™
Series Fieldbus Device Couplers
(Zone 1 Locations)
TG300
KEY PARK
FAULT
NORMAL
DE-
ENERGISED
ACTIVE AUTO
TERMINATOR
+ _ S
+ _ S
+ _ S
+ _ S
+ _ S
+ _ S
SPUR 1
SPUR 2
SPUR 4
SPUR 3
Device
Exd
Spur Wiring
120m maximum
TRUNK
IN
TRUNK
OUT
EEx me
IIC
T5
Exe
Enclosure
Exd/e
Cable Glands
Key
*
Figure 4.
Typical TG300 Series Device Coupler Hook-Up
Wiring Connections
TG300 units have terminals for either four or eight
hazardous area devices, as well as TRUNK IN and
TRUNK OUT terminals. For multiple TRUNKGUARD
units, TRUNK OUT can be looped into any adjacent
TRUNK IN. Segment termination is automatically
provided by the final active TG300 unit. No additional
or external fieldbus terminator is required.
All wiring connections are made directly to Exe
terminals. Cables should be stripped to expose no
more than 8mm (0.31 in) of conductor and inserted
into bootlace ferrules for full insertion into the terminal
opening so that no conductor remains exposed.
Caution:
Terminals are originally supplied fitted with non-
conducting shrouds and terminal entry fillers. These
components are designed to prevent accidental
contact with live parts, and should be retained
for further use. Unused terminals must have the
shrouds/entry fillers restored before the unit is
energized in the hazardous area.
mounting feet (where supplied), in a location where
the risk of external mechanical damage is minimized.
Cable type and cable glands should be selected in
accordance with the intended Zone of installation.
Cables should be brought to the device coupler in
such a way as to prevent external water from running
into the cable entry position. For cables coming
vertically down to a device coupler, it is good practice
to continue down past the device coupler and return
upwards to the cable entry position.
All cables should
be supported within 250mm (9.84 in) of the cable
entry position by a cable tray or other support. This is
particularly important with armored cable.
Once the installation and wiring has been completed,
the terminal covers and shrouds (if removed) must be
replaced and the enclosure should be properly closed
and secured.
LEDs indicate the status of each spur as either
“Normal” (GREEN), “Fault” (RED) or “De-Energized”
(YELLOW). “Normal” shows that the spur has voltage
for device operation and that spur current is within
limits. “Fault” indicates that the short circuit protection
has been activated for that spur.
WARNING:
No access is permitted to TRUNK IN
or TRUNK OUT terminals while the
segment is powered.
Use of the DISCONN Key to physically de-energize an
individual spur, allows wiring activity without affecting
other devices on the segment, even in the hazardous
area. The “De-Energized” (YELLOW) LED can only be
activated if the DISCONN Key interlock has operated
correctly, providing a positive indication of safety for
temporary wiring access. The DISCONN Key can be
locked in position, if required. Wiring terminals have
shrouds and fillers to ensure all live parts are covered
to IP30, and these must be refitted before returning
the unit into service.
Segment connections (TRUNK IN and TRUNK OUT)
*Auto-terminator function not applicable with -MT option.
Содержание Hawke TRUNKGUARD Series
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