Level Measurement
Continuous level measurement - Ultrasonic controllers
SITRANS LU01 and LU02
5/160
Siemens FI 01 · 2011
■
Schematics
SITRANS LU01 connections
SITRANS LU02 connections
DC Model
1. Optically isolated, 750 Ω max. load
2. Use RG62-A/U coaxial (or equivalent) for extensions up to 365 m (1200 ft).
Run in grounded metal conduit, separate from other wiring.
3. Each relay has 1 set of Form 'C' (SPDT) contacts, relay rated at 5 A 250 V AC, non-inductive, when equal or lower rated
limiting fuses are installed.
4. Required if mounted adjacent to other SITRANS LU01 units or other specified Siemens Milltronics devices. Interconnect
all 'SYNC' terminals with a single 18 AWG (0.5mm
2
) wire.
Notes:
AC Model
Bi-polar current loop
Position SW1
for 100/115/
200/230 VAC
Operation
(50/60 Hz
31 VA)
Note 1
Note 2
Note 3
Note 4
Relay
mA
Outputs
SHLDSHLDSHLD
SHLDSHLDSHLD
BLK
WHT/SHLD
BLK
WHT/SHLD
BLK
WHT/SHLD
BLK
WHT/SHLD
Bi-polar current loop
Note 1
Note 2
Note 3
Note 4
Relay
Temp.
sensor
Temp.
sensor
Temp.
sensor
Temp.
sensor
mA
Outputs
SHLDSHLDSHLD
SHLDSHLDSHLD
BLK
WHT/SHLD
BLK
WHT/SHLD
BLK
WHT/SHLD
BLK
WHT/SHLD
COM COM
RS-485
RS-232
A
2
B
1
2
1
2
1
21 43
– +
–+ –+
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 31 3223 24 25 26 27 28 29 30 36 3733 34 35
SYNC
L2/N L1
TX RX
TX RX
1 2 1 2
COM COM
RS-485
RS-232
A
2
B
1
2
1
2
1
21 43
–+ –+
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 31 3223 24 25 26 27 28 29 30 36 3733 34 35
SYNC
24 V
TX RX
TX RX
1 2 1 2
DC Model
1. Optically isolated, 750 Ω max. load
2. Use RG62-A/U coaxial (or equivalent) for extensions up to 365 m (1200 ft).
Run in grounded metal conduit, separate from other wiring.
3. Each relay has 1 set of Form 'C' (SPDT) contacts, relay rated at 5 A 250 V AC, non-inductive, when equal or lower rated
limiting fuses are installed.
4. Required if mounted adjacent to other SITRANS LU01 units or other specified Siemens Milltronics devices. Interconnect
all 'SYNC' terminals with a single 18 AWG (0.5mm
2
) wire.
Note:
AC Model
Bi-polar current loop
Position SW1
for 100/115/
200/230 VAC
operation
(50/60 Hz
31 VA)
Note 1
Note 2
Note 3
Note 4
Relay
mA
Outputs
SHLDSHLDSHLD
SHLDSHLDSHLD
BLK
WHT/SHLD
BLK
WHT/SHLD
BLK
WHT/SHLD
BLK
WHT/SHLD
Bi-polar current loop
Note 1
Note 2
Note 3
Note 4
Relay
Temp.
sensor
Temp.
sensor
Temp.
sensor
Temp.
sensor
mA
Outputs
SHLDSHLDSHLD
SHLDSHLDSHLD
BLK
WHT/SHLD
BLK
WHT/SHLD
BLK
WHT/SHLD
BLK
WHT/SHLD
COM COM
RS-485
RS-232
A
2
B
1
2
1
2
1
21 43
– +
–+ –+
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 31 3223 24 25 26 27 28 29 30 36 3733 34 35
SYNC
L2/N L1
TX RX
TX RX
1 2 1 2
COM COM
RS-485
RS-232
A
2
B
1
2
1
2
1
21 43
–+ –+
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 31 3223 24 25 26 27 28 29 30 36 3733 34 35
SYNC
24 V
TX RX
TX RX
1 2 1 2
(264 Seiten)
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