Brochure/Catalogue

Pulse isolators with relay output
NAMUR disconnect-switch ampliers with relay output
The ACT20X-HDI-SDO-RNO (NC) isolating switching amplier is a specialised signal isolating converter
for Namur sensor signals or for volt-free contacts from a Zone 0 hazardous area. A single relay, available
optionally as NC or NO, provides the output signal in the safe zone. 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
Relay
Relay
Relay
Channel 1:
N.O. or N.C.
Relay
Channel 2:
N.O. or N.C.
NAMUR
+
–
R
p
R
s
R
p
Mechanical
switch
NAMUR
+
–
R
p
R
s
R
p
Mechanical
switch
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 of fill level with the ACT20X HDI-SDO-RNO (relay output)
&RQWURO
/HYHOLQGLFDWRU
7DQN
$&VXSSO\
=RQH
&KDQQHOGLJLWDOLQSXW
$&7;+',6'2512
2WKHUFRQYHUWHU

9'&
9
&KDQQHOGLJLWDORXWSXW
(;=RQH
\
%
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.12 2729490000
Intrinsically safe signal converters – ACT20X
C