11
Safety hints
This unit was built and tested in compliance with VDE 0411-1 / EN 61010-1 and
was delivered in safe condition.
The unit complies with European guideline 89/336/EWG (EMC) and is provided
with CE marking.
The unit was tested before delivery and has passed the tests required by the test
schedule. To maintain this condition and to ensure safe operation, the user must
follow the hints and warnings given in this operating manual.
The unit is intended exclusively for use as a measurement and control instrument
in technical installations.
a
Warning
If the unit is damaged to an extent that safe operation seems impossible, the unit
must not be taken into operation.
ELECTRICAL CONNECTIONS
The electrical wiring must conform to local standards (e.g. VDE 0100). The input
measurement and control leads must be kept separate from signal and power
supply leads.
In the installation of the controller a switch or a circuit-breaker must be used and
signified. The switch or circuit-breaker must be installed near by the controller
and the user must have easy access to the controller.
COMMISSIONING
Before instrument switch-on, check that the following information is taken into
account:
w
Ensure that the supply voltage corresponds to the specifications on the type
label.
w
All covers required for contact protection must be fitted.
w
If the controller is connected with other units in the same signal loop, check
that the equipment in the output circuit is not affected before switch-on. If
necessary, suitable protective measures must be taken.
w
The unit may be operated only in installed condition.
w
Before and during operation, the temperature restrictions specified for
controller operation must be met.
SHUT-DOWN
For taking the unit out of operation, disconnect it from all voltage sources and
protect it against accidental operation.
If the controller is connected with other equipment in the same signal loop, check
that other equipment in the output circuit is not affected before switch-off. If ne-
cessary, suitable protective measures must be taken.
Safety hints
46
Digital 280-1
Summary of Contents for Digital 280-1
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