Siemens SITRANS LU AO User manual

4/168 Siemens FI 01 · June 2015
Level Measurement
Continuous level measurement - Ultrasonic controllers
SITRANS LU AO
4
■ Overview
The SITRANS LU AO Analog Output Module provides remote
analog output for the measurement points of the SITRANS LU10
level monitor.
■ Benefits
• Analog outputs can be up to 1 500 m (5 000 ft) from the
SITRANS LU 10
• Analog outputs can be per transducer and/or average of 2 or
more
■ Application
The operation of the SITRANS LU AO is programmed via the
SITRANS LU10. The only on-board settings are for bank selec-
tion and output testing.
The SITRANS LU AO can provide up to 10 analog outputs (each
sharing a common negative bus which is electrically isolated
from ground).
■ Technical specifications
Mode of operation
Input
Communications Data from SITRANS LU10
Transmission rate 4 800 bits/s
Voltage ± 20 mA bipolar current loop
Polarization Non-polarized
Max. load 1 receiving unit
Output
Analog outputs 10 analog outputs, programmable
from SITRANS LU10
0 or 4 ... 20 mA, isolated
± 20 mA bipolar current loop Input and transmission
• Max. load 750 Ω
• Resolution 0.1 %
Rated operating conditions
Ambient conditions
• Ambient temperature for enclosure -20 ... +50 °C (-5 ... +122 °F)
• Location Indoor/outdoor
• Installation category II
• Pollution degree 4
Design
Weight 2 kg (4.4 lb)
Material (enclosure) Polycarbonate
Degree of protection Type 4X/NEMA 4X/IP65
• Cable connection 2 copper conductors, twisted, with
foil shield/drain wire, 300 V
0.5 ... 0.75 mm² (22 ... 18 AWG)
• Electrical connection and relay
connection Copper conductor according to local
requirements, rated 250 V 5 A
Power supply 100/115/200/230 V AC ± 15 %,
50/60 Hz, 15 VA
Displays and controls 1 LED for display of voltage/
communications state
Certificates and approvals CE, FM, CSA
US/C
, RCM
Selection and Ordering data
Article No.
SITRANS LU AO
Provides remote analog output for the
measurement points of the SITRANS LU10
level monitor.
Approvals: CSA
US/C
, FM, CE, RCM
7ML5810-1A
Operating Instructions
English 7ML1998-5CE01
German
Note: Operating Instructions should be
ordered as a separate line item on the order.
7ML1998-5CE31
This device is shipped with the Siemens Milltronics
manual DVD containing the Quick Start and Opera-
ting Instructions library.
Accessories
Sun Shield, 304 stainless steel 7ML1930-1GA
© Siemens AG 2015

4/169
Siemens FI 01 · June 2015
Level Measurement
Continuous level measurement - Ultrasonic controllers
SITRANS LU AO
4
■ Dimensional drawings
SITRANS LU AO, dimensions in mm (inch)
■ Schematics
SITRANS LU AO connections
SITRANS LU AOSITRANS LU AOSITRANS LU AO
Lid screws
(6 places)
Mounting holes
(accessed under lid)
4.3 mm (0.17 inch) diameter
4 places
Enclosure
Lid
Mounting screw (by customer)
Suitable location for
conduit entrances
209
(8.2)
172
(6.8)
16
(0.6) 91
(3.6)
285
(11.2)
267
(10.5)
__________
++++++++++
Bi-polar
Receiver
mA
output
mA
output
mA
output
mA
output
mA
output
See note 2
See note 3
See note 1
spare
Isolated 0/4 ... 20 mA out,
750 Ω load max. (typical of 10) 100/115/200/230 V AC
50/60 Hz select
voltage via switch
Switch is shown in OFF position.
Select appropriate voltage.
Notes:
1. SITRANS LU AO receiver input is non-polarized.
2. Refer to associated application device instruction manual for wiring detail. Check that the communication parameter P740 (SITRANS LU10) is ON.
3. SITRANS LU AO interconnecting cable shield should be grounded at SITRANS LU10 only. Insulate shields at junctions to prevent inadvertent
grounding. Maximum individual loop length is 3 000 m (10 000 ft).
L1
L2
/N
5
13579 246810
10 15 20 256211162126731121722273084131823283191419242932
SW3
OFF
230 V 200 V
115 V
100 V
© Siemens AG 2015