Brochure/Catalogue

Pulse isolators with transistor output
NAMUR disconnect-switch ampliers with NPN transistor output
The ACT20X-HDI-SDO isolating switching amplier is a digital pulse signal isolator for Namur sensors or
volt-free contacts from a Zone 0 hazardous area. A transistor (NPN) output is provided for the receiver or
controller in the safe area. Single-channel or double-channel versions are also available.
EX area Zone 0, 1, 2, 20, 21, 22 Safe area Zone 2 / FM Class 1, Division 2
Channel 1:
Channel 2:
51
52
53
54
Input signals
44
43
42
41
14
13
12
11
24
23
22
21
Output signals
Gnd –
Supply +19,2...31,2 V DC
Module status
Module status
44
43
42
41
N.C.
Power Supply
NAMUR
+
–
R
p
R
s
R
p
Mechanical
switch
NAMUR
+
–
R
p
R
s
R
p
Mechanical
switch
Opto +
Opto –
Opto +
Opto –
Channel 1:
Channel 2:
Ex label (excerpt)
ATEX FM
U
o
10.6 V
II 3 G Ex nA nC IIC T4 Installation in CL I DIV2 GP A-D T4
Kl. I-III ABT 1/2 GP A-G oder
Kl. I Zn2 AEx/Ex nA nC [ia] IIC T4
I
o
12 mA
II (1) G [Ex ia Ga] IIC/IIB/IIA P
o
32 mW
II (1) D [Ex iaD] L
o
/ R
o

1150 µH/Ω
IECEx Example: IIC
C
o
= 2 µF, L
o
= 260 mH
Ex nA nC IIC T4 Gc ATEX version IIB C
o
= 6 µF, L
o
= 780 mH
[Ex ia Ga] IIC/IIB/IIA Ex input IIA C
o
= 18 µF, L
o
= 1000 mH
[Ex ia Da] IIIC (More details in ATEX certicate)
Application: monitoring the fill level with isolating switching amplifier
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Removable
terminals
(black)
LED green
= supply
Marker
Removable
terminals
(blue)
LED Channel 2
yellow = active
ashing red
= fault
LED Channel 1
yellow = active
ashing red
= fault
SIL
SUITABLE
61508
C.14 2729490000
Intrinsically safe signal converters – ACT20X
C