Siemens LMV50 series

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Building Technologies Basic Documentation LMV5... CC1P7550en
7 Boiler controller / load controller 22.05.2018
BACS for 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 (SETPOINT INPUT). Terminals X62 pin 1 and X62 pin 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 (load
controller software version V01.50 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 pin 2.
Internal
load controller
AZL5
Heat
demand
7
5
5
0
b
0
4
e
/
0
5
1
1
Input 3
(SET POINT INPUT)
X62.1
X62.2
X62.3
X62.4
Predefined setpoint
0/2...10 V
or
0/4...20 mA
Figure 50: Operating mode 4 with load controller
Operating mode 4
(int LC X62)