Operating instructions for KEA 252 PA
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File: BA_KEA 252 PA_EN_Ver 2016-07-01
______________________________________________________________________________________
Alfred Kuhse GmbH
Telephone: +49 4171-798-0
kuhse@kuhse.de
Subject to technical changes
An der Kleinbahn 39, D-21423 Winsen (Luhe)
Fax: +49 4171-798-117
www.kuhse.de
4.
Warnings
4.1. Regulations and instructions
1. Applicable regulations, especially those of the VDE must be observed.
2. The information in the service instructions must be complied with prior to commissioning.
3. The parameterisation of the unit must be carried out in such a way that endangerment of persons and
property is excluded.
4.2. Installation and commissioning
The installation and commissioning must only be carried out by sufficiently qualified personnel.
4.3. Connections
1. The connection of the unit must be carried out carefully, as a wrong connection could lead to the destruc-
tion of the unit. The connection regulations must be observed!
2. The PE(N) must be connected to the terminal 5 of X403.
3. The shields of the analogue signals must only be connected to the earthing screw next to terminal strip
X401 and otherwise no other connection to metal parts.
4. Converter connections k must be connected to the protective conductor.
4.4. Battery and supply voltage
1. If the battery has to be disconnected, the charging unit must be switched off.
2. The battery negative potential must be earthed at the input terminal on the switchboard. The minimum
cross-section is 10 mm2.
3. The supply voltage (12 or 24 V DC) is selected using a switch located on the KRK-12.
4. If the supply voltage of the automatic system was switched off, it must only be switched on again after
approx. 20 seconds.
5. The leakage current of the noise filter upon a 2-phase voltage loss is 22 mA.
4.5. Coils
All the coils must be provided with a freewheeling diode (for DC voltage) or with a quench circuit matching the
inductance of the coil. This also applies for all relays and inductances that are used in the switchgear or are
externally activated.
