Cable Lengths (Lmu; Connectors - Siemens LMU54 Series Basic Documentation

U
Cable lengths
(LMU... Ö HMI and
LMU... Ö Clip-in)

Connectors

Connector space Component
X11 LMU...
X12 LMU...
X13 LMU...
X14 LMU...
X15 LMU...
X30 LMU... for AGU2.361
X40 LMU... for OCI420
X50 LMU... for AGU2.500
High-voltage ignition transformer integrated in
the LMU...
126/171
Siemens Building Technologies
HVAC Products
• RU (X10-01)
- Connection
- Cable length
- Cable resistance
- Power consumption
• PWM control for heating circuit pump (X11)
- PWM frequency
- Min. output voltage LMU...
- Typical output voltage LMU...
- Max. output voltage LMU...
- Cable length
1)
When connecting a thermostat to the DHW sensor input, appropriate contact material
is mandatory (e.g. gold-plated contacts) since the signal voltage at that input is DC 5 V.
• DHW thermostat connected to DHW sensor input
- Voltage
- Current
- Connection LMU... Ö HMI (X30)
- Connection LMU... Ö Clip-in module (OCI420... / AGU2.500...)
Type of connector *
Connector (RAST 2.5) 12-pole
Supplier, e.g. Lumberg Duomodul 3521 12 K00
Connector (RAST 2.5) 6-pole
Supplier, e.g. Lumberg Duomodul 3521 06 K00
Connector (RAST 2.5) 5-pole
Supplier, e.g. Lumberg Duomodul 3521 05 K00
Connector (RAST 2.5) 4-pole
Supplier, e.g. Lumberg Duomodul 3521 04 K00
Connector (RAST 2.5) 3-pole
Supplier, e.g. Lumberg Duomodul 3521 03 K00
Connector to DIN 41651, 14-pole, 1.27 mm spacing, AWG28,
Supplier, e.g. FCI Quickie III 71600-014
Connector (RAST 2.5) 5-pole
Supplier, e.g. Lumberg Duomodul 3515 05 K04
Connector (RAST 2.5) 5-pole
Supplier, e.g. Lumberg Duomodul 3515 05 K04
Quick connector 2.8 x 0.8 mm
* Connector to be fitted to the component (to be provided by OEM)
Recommended cross-sectional area of cable for X11...X15: 0.38 mm
Basic Documentation LMU54... / LMU64...
10 Technical data
QAA73
QAA53
2-wire interchangeable
max. 50 m
max. 2 x 5 Ω
30 mW (typically)
1.536 kHz ± 2 %
DC 5 V at 5 mA
DC 10 V at 7 mA
DC 15 V at 10 mA
DC 20 V at 0 mA
≤ 3 m
DC 5 V
≥ 1.5 mA
total
max. 1 m
2
CC1P7494en
07.11.2002