Alarm output：
Junction box and level gauge
of Ex d Specification
Power supply:
AC or DC
Transmitter NRR261-3xx
Float sensor NAR300 - 15xxxx
1
2
3
4
5
6
7
8
9
10
L
GND N
L 1
11
12
13
14
15
16
17
18
19
20
FG
*1),*4)AC90〜250V
50/60Hz
N.C
N.O
COM
*3）
*2)
N.C1
COM1
N.O1
N.C
COM
N.O
*1)：
*2)：
*3)：
*4)：
*5)：
GND1SRASRASRA
N1
Special Cable for IS connection:
6 to 30 m
Ex d terminal
Connection screw M3
Power arrester
(mounted)
Yellow-green:
FG arrester GND
Ground at the safe area
( Class A ground )
Connection screw M4
Ex [ia] terminal
Connection screw M3
Ground at the safe area
(Class A ground)
If the power spec. is DC22 to 26V, terminal No. 1 is + and No. 5 is -.
Wire by selecting one or others of Explosion-proof side or IS side.
Connect if AC cable with FC is used
Please select the cable entry from order code for the tramsmitter
NRR 261
To maintain IS capability, do not to exceed AC 250V 50/60Hz, DC 250 V
EX
5
Hazardous area
H+ H- PG
H+ H- PG
Blue1
Blue2
Blue3
PG:
Green
Blue2
Blue1
Red
Blue Yellow Black White
FG
H+H-
TB1
TB2
FEL+
FEL-
FRAME
GUARD
PROBE
Sensor I/F Ex box
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