
TR250
12410-0701-03
Page
9 / 18
www.ziehl.de
7
Important notes
DANGER!
Hazardous voltage!
Will cause death or serious injury. Turn off and lock out all power
supplying this device before working on this device.
To use the equipment flawless and safe, transport and store properly, install and start professionally and
operate as directed.
Only let persons work with the equipment who are familiar with installation, start and use and who have
appropriate qualification corresponding to their function. They must observe the contents of the instructions
manual, the information which are written on the equipment and the relevant security instructions for the
setting up and the use of electrical units.
The equipment is built according to DIN/EN/IEC and checked and leave the plant according to security in
perfect condition. To keep this condition, obs
erve the security instructions with the headline „Attention” in the
instructions manual. Ignoring of the security instructions may lead to death, physical injury or damage of the
equipment itself and of other apparatus and equipment.
If, in any case the information in the instructions manual is not sufficient, please contact our company or the
responsible representative.
Instead of the industrial norms and regulations written in this instructions manual valid for Europe, you must
observe out of their geographical scope the valid and relevant regulations of the corresponding country.
Attention! When all relays are programmed in operation current mode
(=pick up at alarm), a loss of the supply voltage or an instrument failure
can remain unidentified. When the relay is applied as control
instrument, the operator must ensure, that this error is recognized by
regular examinations. We recommend to program and accordingly
evaluate at least one relay in the closed-circuit current mode.
Attention! Connection of Sensors
Temperature sensors must be connected to the plug-in terminals 1T1, 1T2, 1T3 etc. To ensure proper
operation this plug-in terminals have gold-plated contacts. Do not use these plugs for other terminals.
Universal power supply
The TR 250 universal power supply works within the range AC/DC 24-240 V. Before switching on make sure,
that the rated supply voltage Us of the type- plate and the mains voltage are the same.