VEGA KFD2-SR2-Ex2.2S - Manual

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KFD2-SR2-Ex2.2S
Subject to reasonable modifications due to technical advances. Copyright Pepperl+Fuchs, Printed in Germany
Pepperl+Fuchs Group • Tel.: Germany +49-621-776-0 • USA +1-330-4253555 • Singapore +65-67-799091 • Internet www.pepperl-fuchs.com
1
Switch Amplifier
2+
3-
1+
Zone 2
Div. 2
Zone 0, 1, 2
Div. 1, 2
KFD2-SR2-Ex2.2S
7
8
9
I
II
III
IV
I
II
24 V DC
14+
15-
Power Rail
24 V DC ERR
5+
6-
4+
10 kΩ
10 kΩ
400 Ω ≤ R ≤ 2 kΩ
10 kΩ
10 kΩ
400 Ω ≤ R ≤ 2 kΩ
10
11
12
Connection
Assembly
• 2-channel isolated barrier
• 24 V DC supply (Power Rail)
• Dry contact or NAMUR inputs
• 2 x 2 relay contact outputs with AND logic
• Line fault detection (LFD)
• Reversible mode of operation
• Up to SIL2 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.
Each sensor or switch controls two form A normally open
relay contacts for the safe area load. The normal output state
can be reversed using switches S1 and S2. Switch S3 is used
to enable or disable line fault detection of the field circuit.
During an error condition, the relays revert to their de-
energized state and the LEDs indicate the fault according to
NAMUR NE44.
A unique collective error messaging feature is available when
used with the Power Rail system.
Features
1 3
4 6
2
5
13 15
12
9
10
7
14
11
8
KFD2-SR2-Ex2.2S
1
2
OUT CHK PWR
S2
S1
S3
II I
Front view
Switch S3
(LB/SC-monitoring)
LED yellow:
Relays channel
Ι
LED red:
LB/SC channel
Ι
LED yellow:
Relays channel
ΙΙ
LED red:
LB/SC channel
ΙΙ
LED green:
Power supply
Removable terminals
green
Removable terminals
blue
Switch S1
(Mode of operation channel
Ι)
Switch S2
(Mode of operation channel
ΙΙ)
2