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Service Manual for KEA 201 ERSY – File:
SA_KEA 201 ERSY_EN_Ver 2016-07-01.doc 4 / 12
Alfred Kuhse GmbH
Phone: +49 4171-798-0
Changes without further notice
reserved.
An der Kleinbahn 39, D-21423 Winsen (Luhe)
Fax +49 4171-798-117
5.
Connections
1. Trained experts may only make the connections of the KEA.
2. The PE(N) must be connected for security reasons to terminal 5 on the X403.
3. The charging device must be switched off before the battery is disconnected.
4. When the supply voltage of the control unit has been switched off, you must wait at least 20 seconds
before applying it again.
5. The negative pole of the battery must be grounded at the input terminal of the switchboard. The mini-
mum conductor cross-section is 10 mm
2
.
6. The supply voltage can be set to 12 or 24 V DC with a switch on the RZ 071-D.
7. The screens of the analogue input wiring must be connected to the earth screws beside the terminal
strip X401 on the KEA cover, and must have no connection to any other metal parts.
8. All coils must be fitted with reverse diodes to prevent high voltage peaks. All other coils or inductive
loads must also be fitted with suppressor elements. The same applies for all relays and inductors that
are used in the switchboard or controlled externally.
The following signals (if needed) are directly applied to the control unit:
Voltage of mains and generator
Current of generator
Four analogue sensors
Pick-up
Two analogue output signals
Optical fibre or USB for parameterisation
Two CAN bus systems.
Although the control system is protected against reverse polarity, the correct polarity when connecting the
battery voltage must be strictly observed, as reverse diodes or other electronic parts of the switchboard may
possibly be damaged.
The fuse on the RZ 071-D will be blown, if the
control system is connected with the wrong polarity!
Due to the fact that most of the control relays may be configured for various functions, only the status print
out of the supplied control unit is to be considered as a binding document. It must be observed, that in case
of a possible replacement of a unit, any modifications made after commissioning cannot be taken into
account by the manufacturer.
