Siemens Sitrans LR460 Kurzanleitung Seite 7

Wiring
WARNINGS:
• Turn off power to the device before unscrewing the housing cover in a hazardous
area.
• All field wiring for AC models must have insulation suitable for at least 250 V.
• The DC input terminals shall be supplied from a source that provides electrical
isolation between the input and the output, in order to meet the applicable safety
requirements of IEC 61010-1.
• The equipment shall be protected by a fuse or circuit breaker of up to 16 A in the
building installation.
• A circuit breaker or switch in the building installation, marked as the disconnect
switch, shall be in close proximity to the equipment and within easy reach of the
operator.
• To avoid short-circuits, do not connect a load resistance with bare wires inside the
connection box.
Notes:
• AC and DC input circuits: min. 14 AWG (2.5 sq. mm) copper wire.
• Lay power cables separately from communication wiring.
• Recommended torque on terminal clamping screws: 0.5 to 0.6 N m (0.37 to 0.44 Lbf-ft).
Connecting SITRANS LR 460
1. Release the cover lock on the enclosure with a 3 mm Allen key and unscrew the cover.
(Use a screwdriver for extra leverage, if required.)
2. Loosen the cable gland and push the power cable through until it reaches the terminal
strip.
cover
lock
3. Follow steps 4 to 8 under either
HART wiring
LR 460 HART requires no power from the 4-20 mA loop.
Note:
Install in accordance with
HCF_LIT-34), available from: http://www.hartcomm.org/technical/doclist.html.
7ML19985QW81
metal bracket
terminal
strip
HART wiring
Wiring and Installation
SITRANS LR 460 – QUICK START MANUAL
PROFIBUS wiring
below or
in the HART Application Guide (order number
cable gland
power
cable
on page 7.
Page EN-5