WTAU –100 / 120 / 200 / 220
page 6 of 8
Electrical connection
Connection of the output
For the two-wire connection cable between the isolation amplifier and the connected devices a standard
installation cable or multi-wire cable for measuring intends with a maximum of 25
per wire can be used.
The use of a shielded signal cable is recommended, if strong electromagnetic influences could happens, e.g.
due to machines or radio equipment. In that case the shielding of the cable should be connected to earth only at
the side of the connected device. When connecting a SPS input stage there must be paid attention that mostly
the signal circuit must be connected to earth by connection the minus terminal with measuring earth.
The signal cable should be installed separated from power leading wires.
For inauguration it is suggested, to deactivate all connected control devices, to avoid unwanted control reactions.
Connection of the power supply voltage
Due to the integrated wide range power supply, for connection to supply voltages from 20...253V AC / DC, the
isolation amplifier is suitable for using in all common energy supply networks.
The connection is reverse polarity protected.
A fuse is integrated internally at the power supply circuit. Due to this the installation of a fine protection is not
necessary.
Terminal occupation
Connection scheme
