39
1. Use flexible cable to connect the power supply. Use a separate flexible screened cable, min.
conductor size 1.5 mm² each, for connecting the signal output.
2. Undo the housing screws
b
and remove the housing cover
d
. The arrow on the name plate points
towards this cover.
Fig. 1.
Remove terminal strips
m
from circuit board.
3. Undo union nuts of the cable glands
c
and pull connecting cables for power supply and signal out-
put through separate cable glands.
4. Wire the terminal strips according to the wiring diagram. Wire PE connection
n
. Make sure that the
screen of the signal cable is also clamped under the earthing screw for the PE connection.
5. Re-attach terminal strips. Attention! The following relocations of cables with basic insulation are not
permissible: power cables in low voltage areas, signal cables in mains voltage area.
6. Retighten union nuts of cable gland
c
. Use sealing plugs supplied with electrode to seal any unused
cable gland.
7. Configure level transmitter (see
Basic Settings, Commissioning).
8. Put cover back in place
d
and tighten the screws
b
.
Electrical Connection
EN
n
Provide an external slow-blow fuse 250 mA for the level transmitter.
n
For the supply of the equipment with 24 V DC use a safety extra-low voltage (SELV)
power supply unit that must be electrically isolated from dangerous contact voltages
and must meet at least the requirements on double or reinforced isolation acc. to
DIN EN 50178 or DIN EN 61010-1 or DIN EN 60730 or DIN EN 60950 (safe isolation).
Attention
NRGT 26-1S
Wiring diagram
Fig. 10
Thermal
fuse
4-20 mA
max. load.
500
Ω
Earthing screw
in housing
PE
+ –
(L) (N)
24V AC/DC
optional
115/230 V AC
Содержание NRG 16-38 S
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Страница 3: ...3 Deutsch DE Seite 4 24 English EN Page 26 47 ...
Страница 14: ...14 Einbau Fortsetzung DE Anschlussgehäuse NRGT 26 1S Fig 7 Fig 8 b c d c l m n o k j i h f e g ...
Страница 25: ...25 Notizen DE ...
Страница 36: ...36 Installation continued EN Terminal box NRGT 26 1S Fig 7 Fig 8 b c d c l m n o k j i h f e g ...
Страница 47: ...47 For your notes DE ...