Engineering manual - UniSAB III 1.10.8
001930 en 2021.06
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UniSAB III (boot) and communication set-up
Fig. 45: RS485/Danbuss connection
UniSAB III uses Danbuss for Multisab sequencing between UniSAB III or
Unisab II
(up to 14 units). This
means that you can connect a UniSAB III unit into an existing UniSAB II Danbuss network and make the
UniSAB III run with the previously installed Unisab II, see Fig. 46.
Fig. 46: Danbuss set-up
From a UniSAB II unit it is also possible to read SCADA data (i.e. compressor running information, con-
figuration, set point, limits, timers etc) from a UniSAB III through Danbuss and an RS2LAN gateway, see
Fig. 46.
U
n
isa
b
III/
U
n
i
sa
b
I
I
In case of communication connections between Unisab III units
and/or Unisab II units, end termination must be used.
In Unisab III: set termination switch S1=ON.
In Unisab II: connect end termination block.
9
11
13
12
10
14
-
-
T
x
D
1
-
-
R
x
D
1
X11
9
11
13
12
10
14
-
-
T
x
D
1
-
-
R
x
D
1
X11
63
64
65
66
-
-
T
x
DL 12
-
-
R
x
DL 13
63
64
65
66
-
-
T
x
DL 12
-
-
R
x
DL 13
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7
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T
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D
1
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R
x
D
1
X11
9
10
7
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T
x
D
1
-
-
R
x
D
1
X11
S1=on
S1=off
S1=off
S1=on
termination block
termination block
U
n
i
s
a
b
III
U
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i
s
a
b
III
U
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s
a
b
III
U
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s
a
b
III
U
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s
a
b
II
U
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s
a
b
II
LED colours
Tx D1 = red
Rx D1 = green
Unisab III controller module rev. E +
Unisab III controller module rev. D
LED colours
Tx DL 12 = red
Rx DL 13 = green
Unisab III/Unisab II
SCADA data
Ethernet
RS2LAN
Gateway
Unisab II no. 1
Unisab II no. 2
Unisab II no. 3
Unisab III no. 4
Unisab III no. 5
RS485/Danbuss
Sequence link
Summary of Contents for SABROE Unisab III Control
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