Kobold ZOK-E1, Дополнительные инструкции по эксплуатации

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ZOK-Ex
ZOK-Ex K08/0322 page 5
6. Electrical Installation
Power supply options:
Most units can be driven through 3 different power options. The software of the
ZOK-Ex units detects the power mode and enables / disables corresponding
hard- and software functions.
a.
Battery powered (using intrinsically safe ATEX Battery-see Section 11):
No electrical outputs, only unpowered sensors can be used (e.g. reed
switch or certified induction coils). This power option can only be used with
ZOK-E1 and ZOK-E3).
b.
External supply (operated by an intrinsically safe power supply). In
combination with an external supply, only passive 2-wire sensors (e.g.
reed switches, certified induction coils, or certified NAMUR sensor) or
certified 3-wire sensors, which are supplied by a separate safety barrier
and sensor signal is galvanically separated, can be used.
The electrical outputs 4-20 mA (3-wire, ZOK-E3) or Pulse output /
switching output (ZOK-E5) or switching outputs for the Dosage (ZOK-E2)
can be used here.
c.
External loop powered 4-20mA (operated by intrinsically safe power
supply). Only certified two-wire sensors without auxiliary power can be
connected (reed switch as a simple device or certified induction coil). This
wiring option can be implemented with ZOK-E3 devices.
Input sensor options:
a. Unpowered inputs:
Reed switches are considered to be simple electrical equipment and can be used
in EX zone 1, provided that the manufacturer has issued a conformity
assessment or certification by a test authority. This applies to the reed switch
sensor of the DON electronics option -HA.