Siemens LMU64 Series - Cable Lengths (LMU; Connectors

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Siemens Building Technologies Basic Documentation LMU54... / LMU64... CC1P7494en
HVAC Products 10 Technical data 07.11.2002
• RU (X10-01) QAA73
QAA53
- Connection 2-wire interchangeable
- Cable length max. 50 m
- Cable resistance max. 2 x 5 Ω
- Power consumption 30 mW (typically)
• PWM control for heating circuit pump (X11)
- PWM frequency 1.536 kHz ± 2 %
- Min. output voltage LMU... DC 5 V at 5 mA
- Typical output voltage LMU... DC 10 V at 7 mA
- Max. output voltage LMU... DC 15 V at 10 mA
DC 20 V at 0 mA
- Cable length ≤ 3 m
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 DC 5 V
- Current ≥ 1.5 mA
- Connection LMU... Ö HMI (X30) total
- Connection LMU... Ö Clip-in module (OCI420... / AGU2.500...) max. 1 m
Connector space Component Type of connector *
X11 LMU...
Connector (RAST 2.5) 12-pole
Supplier, e.g. Lumberg Duomodul 3521 12 K00
X12 LMU...
Connector (RAST 2.5) 6-pole
Supplier, e.g. Lumberg Duomodul 3521 06 K00
X13 LMU...
Connector (RAST 2.5) 5-pole
Supplier, e.g. Lumberg Duomodul 3521 05 K00
X14 LMU...
Connector (RAST 2.5) 4-pole
Supplier, e.g. Lumberg Duomodul 3521 04 K00
X15 LMU...
Connector (RAST 2.5) 3-pole
Supplier, e.g. Lumberg Duomodul 3521 03 K00
X30 LMU... for AGU2.361
Connector to DIN 41651, 14-pole, 1.27 mm spacing, AWG28,
Supplier, e.g. FCI Quickie III 71600-014
X40 LMU... for OCI420
Connector (RAST 2.5) 5-pole
Supplier, e.g. Lumberg Duomodul 3515 05 K04
X50 LMU... for AGU2.500
Connector (RAST 2.5) 5-pole
Supplier, e.g. Lumberg Duomodul 3515 05 K04
High-voltage ignition transformer integrated in
the LMU...
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
2
Cable lengths
(LMU... Ö HMI and
LMU... Ö Clip-in)
Connectors
U