Switch Amplifier
Features
• 2-channel isolated barrier
• 24 V DC supply (bus powered)
• Dry contact or NAMUR inputs
• Usable as signal splitter (1 input and 2 outputs)
• 2 relay contact outputs per channel
• Line fault detection (LFD)
• Up to SIL 2 acc. to IEC 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 two form A normally
open relay outputs 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 relay 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
I
II
Zone 0, 1, 2
Div. 1, 2
Refer to "General Notes Relating to Pepperl+Fuchs Product Information".
Pepperl+Fuchs Group
USA: +1 330 486 0002
www.pepperl-fuchs.com
pa-info@us.pepperl-fuchs.com
SL2
1.5 kΩ
+
1
5a
10 kΩ
-
4
5b
1.5 kΩ
+
2
1a
10 kΩ
-
5
1b
Germany: +49 621 776 2222
pa-info@de.pepperl-fuchs.com
Assembly
Front view
LEDs red:
Fault channel 1 ... 2
Switch 1 ... 4
HiD2822
SL1
8a
11
7a
14
8b
17
7b
18
10a
12
9a
15
9b
13
10b
16
1a, 1b
2a, 2b
6b
Termination Board
Singapore: +65 6779 9091
pa-info@sg.pepperl-fuchs.com
HiD2822
LED green:
Power supply
PWR
LEDs yellow:
FAULT
STATUS
Status output
CH 1
channel 1 ... 2
CH 2
HiD
2822
Place for
labeling
2
+
-
I
+
-
+
-
II
+
-
-
24 V DC
+
FAULT
1