User's Manual

Page 20 SITRANS LR 400 – INSTRUCTION MANUAL 7ML19985FH04
mmmmm
Installation
Electrical Connection
AC version:
• 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:
• DC input terminals shall be supplied from an SELV source in accordance with IEC
1010-1 Annex H.
Notes (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.
1264
5
378
L
1
L
2
N
mA
Rated temperature of
connection cables must
exceed m aximum ambient
temperature by at least 15 K
1264
5
378
L
1
L
2
N
Rated temperature of
connection cables must
exceed maximum ambient
temperature by at least 15 K
PROFI-
BUS PA
HART wiring
PROFIBUS wiring
earth
terminal
earth
terminal
cable clamp
cable clamp
1264
5
378
mA 19-3 0 V
Rated temperature of
connection cables must
exceed maximum ambient
temperature by at least 15 K
12645378
PROFI-
BUS PA
19-30 V
Rated temperature of
connection cables must
exceed m aximum ambient
temperature by at least 15 K
HART wiring
PROFIBUS wiring
earth
terminal
earth
terminal
cable clamp cable clamp