Operating Mode 2 (Intlc); Operating Mode 3 (Int Lc Bus) - Siemens LMV5 Series Basic Documentation

Operating mode 2
(intLC)
Operating mode 3
(int LC bus)
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Internal load controller.
In this operating mode, the load controller inside the LMV5... is used (standard application).
The manipulated variable and the demand for heat are internally generated and
handled.
Terminals X62.1 and X62.2 can be used to make an external changeover between the
internal setpoints W1 and W2.
X62.1
Internal
load controller
X62.2
= W1
= W2
AZL
CAN module
(basic unit)
Manipulated
Demand for
variable
0...100 %
FARC (BU)
BACS as control via bus with the internal load controller.
The internal load controller is connected via the AZL5... and an external bus interface
(Modbus) with a BACS. The BACS transmits "only" predefined setpoints to the internal
controller. This means that the actual control is provided by the internal load controller.
Terminals X62.1 and X62.2 can be used for changeover from the external predefined
setpoint to the internal setpoint W1 (e.g. in the event the BACS fails), triggered via a
potential-free contact (LC software version V01.40 or higher).
load controller
Setpoint
e-bus
BMS
e-bus
Interface
Manipulated
variable
0...100 %
FARC (BU)
Basic Documentation LMV51...
6 Temperature or pressure controller (internal load controller LC)
CAN bus
Manipulated variable,
demand for heat
Manipulated variable,
demand for heat
heat
BC (BU)
Setpoint
Internal
Manipulated variable,
demand for heat
Setpoint
AZL
Manipulated variable,
demand for heat
CAN module
(basic unit)
Demand
for heat
BC (BU)
CAN bus
CC1P7550en
01.10.2003