Operating Mode 4 (Int Lc X62); Operating Mode 5 (Ext Lc X62) - Siemens LMV5 Series Basic Documentation

Operating mode 4
(int LC X62)
Operating mode 5
(Ext LC X62)
Siemens Building Technologies
HVAC Products
BACS as control via analog input with the internal load controller.
In principle, identical to operating mode 3, except that the BACS delivers the predefined
setpoint via analog input 3 (SET POINT INPUT).
Terminals X62.1 and X62.2 can be used to make a changeover from externally (e.g. in
the event the BACS fails) from the external predefined setpoints to the internal setpoint
W1, using a potential-free contact (LC software version V01.40 or higher).
With a predefined setpoint via DC 0...10 V signal, voltage – in the case of changeover
to the internal setpoint «W1» - must be separated from input X62.2.
(SET POINT INPUT)
Predefined setpoint
0...10 V
or
BMS
4...20 mA
The internal load controller is used for translating the analog load signal to the CAN bus
protocol. BACS as control (or external controller) with analog predefined manipulated
variable (load signal) to the controller inside the LMV5... .
Input 3
(SET POINT INPUT)
Predefined setpoint
X62.2
2...10 V
or
X62.3
4...20 mA
BMS
X62.4
Basic Documentation LMV51...
6 Temperature or pressure controller (internal load controller LC)
Input 3
X62.1
X62.2
Internal
load controller
X62.3
X62.4
AZL
CAN module
(basic unit)
Manipulated
Demand
variable
for heat
0...100 %
FARC (BU) BC (BU)
Internal
load controller
AZL
CAN module
(basic unit)
Manipulated
Demand
variable
for heat
0...100 %
FARC (BU) BC (BU)
CAN bus
Manipulated variable,
demand for heat
Manipulated variable,
demand for heat
CAN bus
Manipulated variable,
demand for heat
Manipulated variable,
demand for heat
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CC1P7550en
01.10.2003