Yokogawa RAKD - Manual (Page 55)

<8. EXPLOSION-PROTECTED TYPE INSTRUMENTS>
8-9
IM 01R01B30-00E-E 5th edition January 01, 2013 -00 All Rights Reserved. Copyright © 2003, Rota Yokogawa
8.6 Intrinsically safe "ic" RAKD for Category 3G (ATEX
/IECEx) (/KS3, /ES3)
The RAKD with /KS3 or /ES3 is a unit with protection „ic”.
It may be used in hazardous areas of category 3G.
This version is same hardware as intrinsically safe "ia" type (/KS1, /ES1).
Data of electronic transmitter type -E :
Type of protection : Intrinsically safe Ex ic IIC T6-T4 Gc
Ambient temperature: -25°C ... +65°C
Safety relevant maximum values:
Supply (current output):
Maximum voltage:
U
i
= 30 V
Maximum current: I
i
= 100 mA
Maximum power: P
i
= 750 mW
Inner inductance: L
i
= 0.73 mH
Inner capacity: C
i
= 2.4 nF
Pulse output:
Maximum voltage:
U
i
= 16 V
Maximum current: I
i
= 20 mA
Maximum power: P
i
= 64 mW
Inner inductance: L
i
= 0 mH
Inner capacity: C
i
= 0 nF
Protection circuit for a power supply to meet the maximum values :
Data of limit switches :
Type of protection : Intrinsically safe Ex ic IIC T6 Gc
Safety relevant maximum values:
SC2-NO (/K1.../K3) SJ2-S.N (/K6.../K10)
Type 2 Type 3 Type 2 Type 3
Maximale Spannung: U
i
= 16 V 16 V U
i
= 16 V 16 V
Maximaler Strom: I
i
= 25 mA 52 mA I
i
= 25 mA 52 mA
Maximale Leistung: P
i
= 64 mW 169 mW P
i
= 64 mW 169 mW
Innere Induktivität: L
i
= 0.15 mH 0.15 mH L
i
= 0.1 mH 0.1 mH
Innere Kapazität: C
i
= 150nF 150nF C
i
= 30nF 30nF
current limitation
R1 S1 = 200 mA F
+ Po = 0.7 W
to I o = 100 mA
D 1 = 27 V 5% 24V DC U o = 28.35 V
“ic” voltage - C o= 260 nF
limitation L o = 8.0 mH
- R 1= 300 W, 5%, 3W
F2.EPS
RAKD