Operating Mode 1 (Extlc X5-03) - Siemens LMV5 Series Basic Documentation

Operating mode 1
(ExtLC X5-03)
Siemens Building Technologies
HVAC Products
External load controller.
In this operating mode, an external load controller (e.g. RWF40...) 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... basic unit.
External
load controller
ON / OFF
or
stage 1
CLOSED
or
stage 3
OPEN
or
stage 2
Special case: BACS as control via a contact
External
BMS
load controller
ON / OFF
or
stage 1
CLOSED
or
stage 3
OPEN
or
stage 2
Basic Documentation LMV51...
6 Temperature or pressure controller (internal load controller LC)
Basic unit LMV51...
X5-03
Terminal
ON / OFF
Terminal Evaluation
contact checkback
network
3
Terminal
2
Basic unit LMV51...
X5-03
Terminal
Terminal Evaluation
contact checkback
network
3
Terminal
2
Demand for heat BC (BU)
CLOSED or stage 3 FARC (BU)
OPEN or stage 2 FARC (BU)
7550b07E/0202
Demand for heat BC (BU)
CLOSED or stage 3 FARC (BU)
OPEN or stage 2 FARC (BU)
7550b08E/0800
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CC1P7550en
01.10.2003