Manual
<8. EXPLOSION-PROTECTED TYPE INSTRUMENTS>
8-8
IM 01R01B30-00E-E 5th edition January 01, 2013 -00
All Rights Reserved. Copyright © 2003, Rota Yokogawa
8.4 Non incendive RAKD for Category 3 (ATEX) (/KN1)
Der RAKD with /KN1 is a unit with protection „nL”.
It may be used in hazardous areas of zone 2 (category 3)
The classication in brackets is given according to the EC- Directive ATEX, 94/9/EG.
This version is same hardware as intrinsically safe type.
Protection : Ex nL IIC T6 X
n = non incendive
L = unit with limited energy
Explosion proof : Ex nL IIC T6 X protection „n”; group II ; category 3GD
Marking :
II 3 GD
Entity parameter :
Table 8-3
Analog output Pulse output /CP Limit switch
/K1 ... /K3
Limit switch
/K6 ... /K10
Ui [V] 30 16 16 16
Ii [mA] 100 20 25 25
Pi [mW] 750 64 64 64
Li [µH] 730 0 150 100
Ci [nF] 2.4 0 150 30
Protection circuit for a power supply to meet the maximum values :
8.5 Dust proofed limit switches (ATEX) (/KS2)
Certication by Pepperl & Fuchs :
EC-Type Examination Certicate Nr.: ZELM 02 ATEX 0128X
Identication in accordance with regulation 94/9/EG (ATEX) :
II 1 D
Type of protection : Ex iaD 20
Maximum surface temperature : 108°C.
The dust explosion proof for the limit switches is only available if ordered without electronic transmitter (only with
housing type "T").
current limitation
R
1
S
1
= 200 mA F
+ P
o
= 0.7 W
to I
o
= 100 mA
D
1
= 27 V 5% 24V DC U
o
= 28.35 V
“nL” voltage - C
o
= 260 nF
limitation L
o
= 8.0 mH
- R
1=
300 W
,
5%
,
3W
F1.EPS
RAKD
Ambient temperature : -25 °C < Ta < 65 °C :