Operating Modes Load Controller - Siemens LMV50 Series Manual

Operating mode 1
(ExtLC X5-03)
Building Technologies

7.3 Operating modes load controller

For the connection of a load controller, the LMV5 can be operated in different
configurations. In that case, the internal load controller, different external load
controllers, or a load controller via BACS can be used.
To ensure all involved bus users (LMV5, load controller, AZL5) are correctly configured,
global parameter LC_OptgMode is defined.
This parameter is set on the AZL5 when selecting the operating mode and is delivered
to all bus users involved. Then, each bus user makes the configurations required for
the relevant operating modes.
Parameter LC_OptgMode (ExtLC X5-03/Int LC/Int LC Bus/Int LC X62/Ext LC
X62/Ext LC Bus)
External load controller.
In this operating mode, an external load controller (e.g. RWF5) is used. The internal
control algorithm is not active.
The internal temperature limiter function can be activated.
The external load controller must have 3 contact outputs which – as shown below –
must be connected to the LMV5.
External
load controller
ON/OFF
or
stage 1
CLOSED
or
stage 3
OPEN
or
stage 2
Figure 46: Operating mode 1 with load controller
Special case: BACS for control via a contact.
External
load controller
ON/OFF
or
stage 1
CLOSED
or
stage 3
OPEN
or
stage 2
Figure 47: Operating mode 1 with load controller – special case
Basic Documentation LMV5...
7 Boiler controller / load controller
Basic unit LMV51...
X5-03 pin 1
ON/OFF
Evaluation
contact checkback
network
X5-03 pin 2
3
X5-03 pin 3
2
Basic unit LMV51...
GA
X5-03 pin 1
ON/OFF
Evaluation
contact checkback
network
X5-03 pin 2
3
X5-03 pin 3
2
Demand for heat FA
CLOSED or stage 3 ELV
OPEN or stage 2 ELV
Demand for heat FA
CLOSED or stage 3 ELV
OPEN or stage 2 ELV
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CC1P7550en
22.05.2018