External predefined load,
modulating
External predefined load,
multistage
External setpoint
changeover
External setpoints or
predefined load via
digital e-bus interface
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Siemens Building Technologies
HVAC Products
Controller locked
I (mA)
4
U (V)
2
Controller locked
I (mA)
4
U (V)
2
Detection of short-circuits and open-circuits of lines is ensured - similar to the sensor
inputs.
In operating mode 2 (intLC), changeover between the 2 internally defined setpoints W1
and W2 can be accomplished by means of an external (potentialfree) contact.
In operating modes 3 (intLC via BMS) and 4 (intLC BMSan), changeover between the
external predefined setpoint and the internally defined setpoint W1 can be accomplished
by means of an external (potentialfree) contact (from software version V01.40).
The settings described under «Input 3» can also be made from a BMS connected to the
AZL51... via RS-232 and e-bus interface.
Parameter:
LC_OptgMode (intLC o.DDC / extLC o.DDC)
An external predefined setpoint via e-bus exists with «intLC via BMS».
An external predefined load via e-bus exists with «extLC via BMS».
Basic Documentation LMV51...
5 Temperature or pressure controller (internal load controller LC)
Part load
Full load
5
20
2.5
10
Stage 1
Stage 2
5
10
2.5
5
Stage 3
20
10
CC1P7550en
29.05.2002