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Operating instructions
Electronic preset counter
Type 901
1.1 Foreword
Please read this instruction manual
entirely and carefully before installa-
tion and start-up. Please observe all
warnings and advices, both for your
own safety and for operating safety.
The intended protection can be
impaired If the device is not used
in accordance with this instruction
manual.
1.2 Safety instructions and warnings
Please use the device only if its
technical condition is perfect. It
should be used only for its intended
purpose, in accordance with this
instruction manual.
Defective or damaged devices
should be disconnected from the
mains immediately and taken out of
operation.
Repair work may be performed
only by the manufacturer‘s repairs
service.
This device may be opened only
for battery replacement. For this
purpose, the device must be sepa-
rated from all electric circuits and
de-energized.
Only connect the device to the
electricity networks provided to that
purpose.
The safety of the system in which
the device is integrated is the
responsibility of the installer.
Disconnect all electricity networks
prior to any installation or mainte-
nance work.
Use exclusively cables approved in
your country and designed for your
temperature and power ranges.
Installation and service work shall be
carried out exclusively by qualified
personnel.
The device must compulsorily be
protected with approved external
fuses. The value of these fuses
can be found in the technical
information.
This symbol is used on the device
to remind of the existence of dan-
gers, which are referred to in this
manual.
1.3 Use according to the intended purpose
The preset counter 901 counts pulses and
times up to max. 30 Hz and offers various
operating modes. The present counter simulta-
neously processes a programmed preset value.
Any other use is considered as non compliant
with the intended use.
The application area for this device lies in
industrial processes and controls, in the fields
of manufacturing lines for metal, wood, plastics,
paper, glass, textile and other like industries.
Overvoltages at the terminals of the device
must be kept within the limits of Overvoltage
Category II. The device must only be operated
when properly mounted in a panel and in accor-
dance with the section “Technical Data”.
The device is not suitable for use in areas with
explosion protection and for areas excluded in
EN 61010-1. If the device is used to monitor
machines or processes in which, in the event of
a failure of the device or an error made by the
operator, there might be the risk of damaging
the machine or causing an accident to the
operators, it is your responsibility to take the
appropriate safety measures.
The device has been designed for indoor ope-
ration. It may nevertheless be used outdoors,
provided the technical data is complied with.
In this case, take care to provide suitable UV
protection.
