57
Mounting- and Operating Instruction Eaton LoadStar-S JSB
40071860396 March 2021 www.ceag.de
20 ACU Module
ACU Bus sub-station connection
Sub-distribution boards with TFT touch display that are
supplied by a LoadStar-S must be connected to each other
via the ACU bus:
• Power failures at sub-distributors are detected and repor-
ted to the LoadStar-S in order to avoid discharge of the
batteries.
• Switching commands of the 3-PM-IO and 3-PM-IO-INV
modules can work across devices.
• Networked switching actions and information can be
transmitted.
• function and operating time tests are synchronized.
The cores of the ACU bus line must be connected to the
ACU terminal strip at the terminal points ACU Bus H, ACU
Bus L. The ACU bus line must be connected to the ACU ter-
minal strip at the terminal points ACU Bus H, ACU Bus L.
ATTENTION!
Bus topology: linear, double terminated (no spur lines
allowed). Cable type (minimum requirement): IY(ST)Y 4
x 2 x 0.8 mm (twisted pair, shielded) - the shield of the
cables must be connected to the SE terminals on the ACU
module.
In the ACU modules the 120Ω ohm terminating resistor
is integrated and can be activated by the two upper DIL
switches.
L1
N1
L2
N2
L3
N3
L4
N4
N6
L7
N7
+24V
-1
+24V
-2
+24V
-3
-24V
-1
-24V
-2
-24V
-3
SE-IN
A-IN
B-IN
SE-
O
ut
A-
O
ut
B-
O
ut
B2
B1
L5
N5
L6
L8
N8
PE1
PE2
Adresse
3-PM-IO
H L Sh1 +24.1 -24.1 A B
Sh2 +24.2 -24.2 IN1.1 IN1.2 IN2.1 IN2.2 IN3.1 IN3.2 IN4.1 IN4.2 IN5.1 IN5.2 IN6.1 IN6.2 K1.COM K1.NO K1.NC
K2.COM K2.NO K2.NC K3.COM K3.NO K3.NC K4.COM
K4.NO K4.NC
HMI ETN +24.3 -24.3 IN7.1 IN7.2 IN8.1 IN8.2 K5.COM K5.NO K6.COM K6.NO
ACU
H L A B
L3
L2
N
PE
L1
Connection diagram ACU
ACU Bus – X2.A
Rated Voltage:
≤ 30V (SELV)
Rated Current:
≤ 0,12A short-circuit proof
Bus Topologie:
Line
Cable type:
E.g. IY(ST)Y 4x2x0,8mm
Maximum cable length:
900m
Terminating resistor:
Switchable via DIL switch on ACU.
Maximum number of LoadStar-S systems.
32
1
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ACU Modul
