Siemens LMV50 Series Manual page 105

Operating mode 5
(Ext LC X62)
Building Technologies
The internal load controller is used for translating the analog load signal to the CAN bus
protocol. The internal control algorithm is not active. BACS for control (or external
controller) with analog predefined manipulated variable (load signal) to the controller
inside the LMV5.
Terminals X62 pin 1 and X62 pin 2 can be used to make a changeover externally (e.g.
in the event of a failure in the building automation) from the external predefined setpoint
to the internal setpoint W1 using a potential-free contact (software version V01.50 or
higher).
With a predefined setpoint via 0...10 V signal, the voltage – in the case of changeover
to the internal setpoint 1 (W1) – must be separated from input X62 pin 2.
Predefined output
0/2...10 V
or
0/4...20 mA
Figure 51: Operating mode 5 with load controller
Basic Documentation LMV5...
7 Boiler controller / load controller
Input 3
(SETPOINT INPUT)
X62.1
X62.2
Internal
load controller
X62.3
X62.4
AZL5...
Manipulated
variable
0...100 %
Heat
request
105/327
CC1P7550en
22.05.2018