To Set The Shared Functions For Multiple Units - Daikin LMS Serie Installationsanleitung

6.5.3 To set the shared functions for multiple
units
Lights
Lights can be connected to all controllers in the network and the light
status is always synchronised. Each controller will turn the lights on
and off simultaneously.
The time during which the light stays on after opening and closing
the door is set by parameter H14, and can be set from 0 to
240 minutes. See "6.3 To change the parameters" [ 4 18].
Door open
The door microswitch must be connected to the primary unit
controller in the network. Door status is "open" if the switch is open.
As for the lights, also the door status is shared to all controllers.
Every controller knows if the door(s) is/are open or not, and each
controller can perform the actions that are set in parameters "DIE",
"DIP", "rIE" and "rIP".
Network temperature regulation
The temperature regulation can be performed in two ways
depending on the parameter "nrt" with the following values:
▪ 0: The relative controller regulates through the probe connected to
itself.
▪ 1: The relative controller regulates through the probe connected to
the primary unit controller.
The network logic allows
compressors. Using the "SSd" parameter it is possible to set a delay
between starts of different LMSEY units.
If it is necessary to start several units at the same time, the first unit
to signal to start will be the first one to start. After "SSd" the next unit
will also start and so on (See the example below).
1
C1
0
1
C2
0
1
C3
0
1
0
1
0
SSd SSd SSd SSd
1 On
0 Off
A Compressor status
B Request status
C1 Compressor secondary unit 1
C2 Compressor secondary unit 2
C3 Compressor secondary unit 3
C4 Compressor secondary unit 4
CM Compressor primary unit
SSd Delay between start up [s]
Note: LMSEY2A19+25AYE01 units have two compressors, but work
in a similar way.
LMSEY1A09/13 + LMSEY2A19/25
Daikin LMS
4P728170-1B – 2023.07
avoiding simultaneous starts
A
C4
CM
sec.
SSd
Name Description
nrt_1 Network temperature regulation
for secondary unit 1.
▪ 0: The
regulates through the probe
connected to itself.
▪ 1: The
regulates through the probe
connected to the primary unit
controller.
nrt_2 Enable shared parameters for
secondary unit 2
nrt_3 Enable shared parameters for
secondary unit 3
nrt_4 Enable shared parameters for
secondary unit 4
SSd Delay between the start up of
different compressors (in
seconds).
Network defrost
It is possible to enable/disable this functionality for each controller
separately.
Defrost can be synchronised between the primary unit controller and
secondary unit controllers using parameters dS_1, dS_2, dS_3, and
of
dS_4 with the following values:
▪ 0: No synchronisation performed.
▪ 1: Only starting.
Only starting: secondary unit controllers will start to defrost at the
same time as the primary unit controller, and all controllers can
finish in different moments.
▪ 2: Start & Stop.
B
Start & Stop: secondary unit controllers will start to defrost at the
same time as the primary unit controller. If one controller ends
defrosting before the others, the corresponding defrost relay is de-
energised and the dripping phase will only start when all other
controllers have finished the defrosting phase.
dS_1 = 0
dS_2 = 1
dS_3 = 2
dS_4 = 2
d2 = 0
CM
A1
C1
B1
C2
C3
C4
A B
A Start
A1 Start not synchronised
B End synchronised
B1 End not synchronised
C1 Controller secondary unit 1
C2 Controller secondary unit 2
C3 Controller secondary unit 3
C4 Controller secondary unit 4
CM Primary unit controller
dS1~4 Defrost synchronisation parameters
d2 Network end defrost synchronised for primary unit
6 Configuration
Default Min.
0
relative controller
relative controller
0
0
0
20
dS_1 = 0
dS_2 = 1
dS_3 = 2
dS_4 = 2
d2 = 1
B1
CM
A1
C1
B1
C2
C3
C4
min.
A B
Installation manual
Max.
0 1
0 1
0 1
0 1
0 300
B
min.
25