Alfa
31
hot air gas-
fi
red air heaters
In support of engineering, installation, servicing, and maintenance
52.10.03.2017.eng
Lersen.Net II Central Control
Control of the Alfa TOP (eco) units + SK with servo drive
For basic wiring diagram, detail information on wiring and setting see the manual for Central Controller or contact our dealer.
LERSEN.NET II
data line
RC1 RC
One unit Lersen.Net II always controls ONLY one unit Alfa TOP
Alfa TOP
cable CMSM 7G 7x0,75 [7C 7x0.75] -
not longer than 30
m
et
ers
LERSEN.NET II
data line
RC1
RC
cable CMSM 5G 5x0,75 [5C 7x0.75] – not longer than 9 meter
or LIYCY-JZ - 5x0,75 – not longer than 30 m
data line FTP/STP
cable Cat 5e
A....xx / 1...32
230V/50Hz
1
L
N
PE
230V/50Hz
1
L
N
PE
230V/50Hz
1
L
N PE
230V/50Hz
1
L
N PE
KR
230V/50Hz
1L
N
PE
KR
Ř
ídící PC
sensor connected
(part of unit)
B
4
S
3
T
2
T
1
shield
Brown
Brown
white/brown
white/brown
6 (M)
2
1
3
4
5
RC1
RC2
CMSM 7G - 7x0,75
CMSM 4G - 4x0,75
1
3
2
4
1
2
3
cable core nu
m
bers
B
4
S
3
T
2
T
1
B4
S3
T2
T1
following unit LNET II
data cable (STP/UTP Cat5e Belden)
from previous unit LNET II
(or converter)
Rx-
Rx-
Rx+
Rx+
Power supply from the ALFA TOP unit’s connection box
230V/50Hz
Power supply
230V/50Hz
Power supply
230V/50Hz
C
X
LnetII unit
LnetII unit
ALF
A
hot air gas-
fi
red air hea
ters
