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Siemens Building Technologies SED2 LON Module Operating Instructions CE1B5193en
HVAC Products 5 Application note using LG-Ni 1000 sensor example 26.06.2006
5 Application note using LG-Ni 1000
sensor example
Use the following parameter settings for PID loop control via the LON module.
Parameter and setting Value of parameter Explanation of value
P2201, set to appropriate
setting for your installation.
Fixed PID setpoint in °C
P2253[0], set to one of the
following:
• 755[0] for analog input 1
on the drive
• 2050[1] for
nviDrvSpeedStpt
• 2050[3] for setpoint nvi
(nvi15 through nvi19)
Selection of setpoint source LON-mapped setpoint
P0701[0], set to 16. Local drive enable Sets digital input 1 as the
enable for fixed setpoint PID
P0756[1], set to 5.
Alternately set P0756[1] = 1
for 0 to 10V or
P0756[1] = 3 for 4 to 20 mA
Feedback input type for ana-
log input 2 (index 0 means
analog input 1, which is not
used in fixed setpoint appli-
cations)
Setting 5 is for Ni 1000 sen-
sor only
P0757[1], set to appropriate
setting for your installation
Low-end signal range °C Input scaling
P0758[1], set to appropriate
setting for your installation
Low-end sensor range °C Input scaling
P0759[1], set to appropriate
setting for your installation
High-end sensor range °C Input scaling
P0760[1], set to appropriate
setting for your installation
High-end sensor range °C Input scaling
Sensor ranges QAD21 = -30 °C to 121 °C
QAP22 = -25 °C to 95 °C
P2264[0], set to either
2050[2] for feedback nvi
(nvi10 through nvi14) or
755[1] for analog input 2
PID feedback LON-mapped feedback
P2306, set to 1 Direct acting or reverse act-
ing
0=direct acting
1=reverse acting
P2200, set to 1 Enable PID loop
r0752[0] ] for analog input 1
or
r0752[1] for analog input 2
Read only; check actual
value
r0754[0] for analog input 1 or
r0754[1] for analog input 2
Read only; check scaled
value
P2280, set to 1.2 P-gain
P2285, set to 30 I-gain
Confirm P0700=6 LON communication link
Confirm P1000=6
Press P to exit programming