Switch Amplifier
HiD2844
<
4-channel isolated barrier
<
24 V DC supply (bus powered)
<
Dry contact or NAMUR inputs
<
4 passive transistor outputs
<
Line fault detection (LFD)
<
Up to SIL 2 acc. to IEC/EN 61508
Function
This isolated barrier is used for intrinsic safety applications. It transfers digital signals (NAMUR sensors/mechanical contacts) from a hazardous
area to a safe area.
The proximity sensor or switch controls a passive transistor for the safe area load. The module output changes state when the input signal
changes state. The normal output state can be reversed with the selector switches on the side of the unit.
Line fault detection (LFD) can be selected or disabled via a selector switch.
During an error condition, the transistor reverts to its de-energized state and the LEDs indicate the fault. A separate fault output bus is available.
The fault conditions can be monitored via a Fault Indication Board.
This module mounts on a HiD Termination Board.
Connection
Zone 0, 1, 2
Div. 1, 2
HiD2844
I
II
SL2
SL1
11
14
+
-
8a
7a
17
18
8b
7b
12
15
10a
9a
13
16
9b
10b
1
4
5a
5b
+
-
2
5
1a
1b
I
II
10 kΩ
1.5 kΩ
10 kΩ
1.5 kΩ
III
IV
+
-
3
6
3a
3b
+
-
7
8
7a
7b
III
IV
10 kΩ
1.5 kΩ
10 kΩ
1.5 kΩ
+
-
+
-
+
-
+
-
+
-
24 V DC
FAULT
1a, 1b
2a, 2b
6b
Termination Board
Technical Data
General specifications
Signal type
Digital Input
Functional safety related parameters
Safety Integrity Level (SIL)
SIL 2
Supply
Connection
SL1: 1a(-), 1b(-); 2a(+), 2b(+)
Rated voltage
U
r
20.4 ... 30 V DC bus powered via Termination Board
Rated current
I
r
15 mA at 24 V (per channel)
Power dissipation
0.35 W at 24 V (per channel)
1
Release
da
te:
2022-01-
-
05
Date
of
Release
date:
2022-01-05
Date
of
issue:
2022-01-05
Filename:
121457_eng.pdf
Germany: +49 621 776 2222
Fuchs Group
Refer to "General Notes Relating to Fuchs Product Information".
USA: +1 330 486 0002
Singapore: +65 6779 9091
www.pepperl-fuchs.com
