Guidelines; Maintenance And Repairs; Inspection And Maintenance Of The Ex Protection; Traceability - Kübler Sendix SIL Serie Instrucciones De Uso

8.3 Guidelines

Power-on delay
After switching on, the device requires a time of approximately 150 ms before valid data can be read.
SET button
The encoder can be set to zero at any position by means of a High signal on the SET input or by
pressing the SET button (can be operated only with a pen or a thin item). Other preset values can be
factory-programmed. The SET input has a signal delay time of approximately 1 ms. Once the SET
function has been triggered, the encoder requires an internal processing time of approximately 15 ms
before the new position data can be read. The LED is on during this time.
DIR input
A HIGH signal switches the direction of rotation from the default CW to CCW. The reverse function
can also be factory-programmed. If DIR is reversed when the device is already switched on, this will
be interpreted as an error. The LED switches on and the status output switches to LOW.
Status LED
This optional (red) LED serves to display various alarm or error messages.
The LED is off during normal operation.
A lighted LED (status output LOW) indicates:
• Sensor error, singleturn or multiturn (dirt, breakage of the glass disk, etc.)
• LED error, failure or ageing
• Over or undertemperature
In SSI mode the error message can only be reset by switching off the power supply. The displays are
not safety-rated and serve only for the diagnostics.

9. Maintenance and repairs

The encoder is maintenance-free. In case of high loads (e.g. due to high rotational speeds and revers-
ing operation), the torque stop may be subject to a certain wear. In this case, the replacement of the
torque stop may become necessary. Please contact us in this case.

9.1 Inspection and maintenance of the Ex protection

1. The dust explosion protection strongly depends on the local conditions and therefore the equipment
in hazardous areas by dust requires regular inspection and maintenance. Thick layers of dust will
result in a temperature rise on the surface of the device due to thermal insulation. Therefore, dust
deposits on the encoder should be avoided as far as possible by means of a suitable mounting and
regular maintenance.
2. As a general rule, a device that is to be opened for servicing shall only be opened by trained
personnel of the manufacturer. During disassembly, care must be taken in order not to damage the
elements that are relevant for the tightness of the housing.
3. Should damages appear at the device, especially at the seals, the device is to be replaced immedi-
ately. Repair work at the device itself is to be carried out exclusively by the manufacturer.

9.2 Traceability

It is recommended to ensure the traceability of devices carrying out functional safety tasks. This is
determining for a quick reaction in the market.
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