Samson 3738-20, Монтаж и эксплуатация

Страница: 59 / 84

EB 8390 EN 59
Firmware update (serial interface)
Inspection by a qualified inspector is not re -
quired if the manufacturer performs a rou-
tine test on the device before putting it back
into operation. Document the passing of the
routine test by attaching a mark of conformi-
ty to the device.
Replace explosion-protected components on-
ly with original, routine-tested components
from the manufacturer.
Devices that have already been used out-
side hazardous areas and are intended for
future use inside hazardous areas must
comply with the safety requirements placed
on serviced devices. Before being operated
inside hazardous areas, test the devices ac-
cording to the specifications for servicing
explosion-protected devices.
12 Firmware update (serial in-
terface)
Firmware updates on electronic limit switches
currently in operation can be performed as
follows:
When updates are performed by a service
employee appointed by SAMSON, the up-
date is confirmed on the device by the test
mark assigned by SAMSON’s Quality Assur-
ance.
In all other cases, only plant operator per-
sonnel with written approval may perform
updates. Updates are to be confirmed by ap -
proved personnel on the device.
Laptops and PCs connected to the power
supply must not be used without an addition-
al protective circuit.
This does not apply to laptops in battery op-
eration. In this case, it is assumed that a bat-
tery-powered laptop runs briefly for software
programming or testing purposes.
a) Updates outside the hazardous area:
Remove the electronic limit switch from
the plant and update it outside the haz-
ardous area.
b) Updates on site:
Updates on site are only permitted after
the plant operator presented a signed
hot work permit.
After updating has been completed, add
the current firmware to the nameplate;
this can be done using labels.