Electrical Connection - Siemens SITRANS LR 400 Instruction Manual

Electrical connection

AC version:
Hart Wiring
cable clamp
3 4 5 6 7 8
Rated temperature of
connection cables must
mA
exceed maximum ambient
temperature by at least 15 K
• The equipment must be protected by a 15A fuse or circuit breaker 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.
All field wiring must have insulation suitable for at least 250 V.
DC version:
Hart Wiring
cable clamp
3 4 5 6 7 8
Rated temperature of
connection cables must
mA
exceed maximum ambient
temperature by at least 15 K
• DC input terminals shall be supplied from an SELV source in accordance with IEC
1010-1 Annex H.
Note (AC and DC versions):
• 4-20 mA, Profibus PA, DC input circuits, 14 - 20 AWG, shielded copper wire
• AC input circuit, min 14 AWG copper wire
• Recommended torque on terminal clamping screws, 0.5 - 0.6 Nm
7ML19985FH01 SITRANS LR 400 – INSTRUCTION MANUAL DRAFT
earth terminal
1 2
L L
1 2
N
earth terminal
1 2
19-30 V
Profibus Wiring
cable clamp
3 4 5 6 7 8
Rated temperature of
connection cables must
PROFI-
exceed maximum ambient
BUS PA
temperature by at least 15 K
Profibus Wiring
cable clamp
3 4 5 6 7 8
Rated temperature of
connection cables must
PROFI-
exceed maximum ambient
BUS PA
temperature by at least 15 K
earth
terminal
1 2
L L
1 2
N
earth
terminal
1 2
19-30 V
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