ZIEHL-ABEGG CXE/AV, Operating Instructions Manual, Page: 11 / 121

equalization.
•
Never clean electrical equipment with water or similar liquids.
Information
The respective connections are represented in the enclosure of this manual ( Connection diagram)!
5.2 EMC-compatible installation of control lines
Pay attention to suf fi cient distance from powerlines and motor wires to prevent interferences. The
control cable may not be longer than 30 m. Screened control cables must be used when the cable
length is longer than 20 m. When using a shielded cable connect the shielding to one side only, i.e.
only to the control unit with the protective ground (keep cable short and with as little inductance as
possible!).
5.3 Mains connection
Here, it must be strictly observed that the mains voltage lies within the allowable tolerance speci fi ca-
tions (see Technical data and name plate af fi xed to the side).
Danger due to electric current
The mains voltage must comply with the DIN EN 50160 quality characteristics and the de
fi
ned
standard voltages in IEC 60038!
Type CXE/AV(E)
•
Power from the mains is connected to terminals N, L1and PE.
•
Potential separation between the control voltage connections and line connection by internal trans-
formator.
Type CXG-24AV(E)
•
Connection for voltage supply to terminals (+) and (-).
•
No potential separation between voltage supply and control voltage connections!
Danger due to electric current
•
Only PELV current sources which ensure safe electrical isolation of the operating voltage in
accordance with IEC/DIN EN 60204-1 must be used.
•
UL note :
– The products shall be supplied by limited energy in accordance to UL/IEC 61010-1 Third Edition,
Sub. Clause 9.4
“ Limited-energy circuit ” or LPS in accordance to UL/IEC60950-1, 2nd edition, or
the requirements of NEC Class II or the standard UL1310.
5.4 Signal input or sensor connection (E1, E2)
The unit has two analog inputs: Analog In 1 = “ E1 ” and Analog In 2 = “ E2 ” .
The connection is independent of the programmed operating mode and from the sensor signal
employed.
•
When connecting passive temperature sensorsTF.. (KTY81-210) or PT1000 at terminals “ E1 ” and
“ T ” or “ E2 ” und “ T ” must be paid attention to no polarity.
For a high interference immunity a capacitor must be connected directly to the sensor (1 nF
parallel). With temperature sensors type TF.. (KTY81-210) a capacitor is integrated.
•
When connecting aktive sensors at the terminals “ E1 ” and “ GND ” or “ E2 ” and “ GND ” attention must
be paid to correct polarity, a 24 V DC power supply is integrated.
•
For sensors in two-wire-technology (4 - 20 mA signal), the connection is made on the “ E1 ” and
“ 24 V ” or “ E2 ” and “ 24 V ” , “ GND ” terminal is omitted.
Danger due to electric current
Never apply line voltage to analog inputs!
Operating Instructions UNIcon MODBUS Master Electrical installation
L-BAL-E255-GB 1901 Index 001 Part.-No.
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