Troubleshooting
LION System
EN1Z-0921GE51 R0315
44
Power Supply and Earthing of LION with Multiple
Controllers
Connecting a LION System together with other controllers
earth-grounded as per EN60204-1
NOTE:
Use a noise-free earth ground inside the cabinet.
NOTE:
Use one star-point to split power for controllers
and field devices.
NOTE:
If the transformer is used for several controllers,
each controller ground has to be wired separately
to the star-point.
NOTE:
If a field device that prohibits earth grounding is
connected to the system ground, an isolation
monitoring device must be used instead of earth
grounding.
NOTE:
If the field device transformer is physically far
away from the controller, earth grounding must
still be performed for the controller.
►
Connect earth ground to the respective terminal of the
controllers, see figure below.
24 V
~
24 V0
XCL5010
XL100C
24
V
~
24
V
~
2
71
1
72
24
V
~0
XSL511
24
V
~
2
1
24
V
~0
XL50
24
V
~
2
1
24
V
~0
24
V
~0
CLLIONLC01
24
V
~
1
2
24
V
~0
FIELD
DEVICE
24
V
~
GND
Y
LINE
NOISE-FREE EARTH GROUND
(ONLY ONE PER SYSTEM)
Fig. 59
Connecting and earth grounding mixed
controllers (single transformer)
NOTICE
Equipment damage!
Terminals 1 and 2 are assigned differently on the XCL5010
and CLLIONLC01 Controllers.
►
Make sure that earth ground is connected to the correct
terminal according to Fig. 59 and the respective
connection diagrams.
The XL40, XL50, XL100C, Distributed IO, Smart IO, and the
LION System can share one transformer.
The XC5010C Controller always requires its own
transformer.
If EN60204-1 is applicable for the given type of controller,
the system ground has the same potential as one terminal
of the power supply.
LION and Multiple Controllers, Connected by C-
Bus
Connecting a C-Bus with controllers earth-grounded as per
EN60204-1
NOTE:
Use a noise-free earth ground inside the cabinet.
NOTE:
Do not use the controller terminals which are
normally used for C-Bus shield connection.
NOTE:
Be sure to wire the shield only once per bus con-
nection to the earth ground; this is to prevent any
current draw over the shield.
NOTE:
A permanent earth ground potential difference of
more than 24 VAC may destroy the related con-
trollers.
XCL5010C
C+
C-
16
15
18
17
CLLIONLC01
NOISE-FREE EARTH
GROUND (ONLY ONE
PER CONNECTION)
MAX. 24 V POTENTIAL
DIFFERENCE ALLOWED
BETWEEN EARTH GROUNDS
C+
C+
C-
C-
5
5
C+
8
6
6
C-
9
SHIELD
10
XCL5010
XL50
Fig. 60
Connecting C-Bus with multiple controllers earth-
grounded as per EN60204-1
If a system ground of the controller is connected to the earth
ground, the available terminals for shielding the C-Bus must
not be used. Instead, the C-Bus shield must be connected
to the earth ground, but only once per bus connection.