Release date 2016-09-13 11:47 Date of issue 2016-09-13 132964_eng.xml
KFD2-SR2-Ex2.W.SM
1
Refer to "General Notes Relating to Pepperl+Fuchs Product Information".
Pepperl+Fuchs Group USA: +1 330 486 0002 Singapore: +65 6779 9091Germany: +49 621 776 2222
www.pepperl-fuchs.com pa-info@us.pepperl-fuchs.com pa-info@de.pepperl-fuchs.com pa-info@sg.pepperl-fuchs.com
Standstill and Rotational Direction Monitor
KFD2-SR2-Ex2.W.SM
2+
3-
1+
Zone 2
Div. 2
Zone 0, 1, 2
Div. 1, 2
I
II
5+
6-
4+
24 V DC
14+
15-
Power Rail
24 V DCERR
7
8
9
10
11
12
I
II
10 kΩ
10 kΩ
400
Ω
≤ R ≤ 2 k
Ω
10 kΩ
10 kΩ
400
Ω
≤ R ≤ 2 k
Ω
Connection
Assembly
• 2-channel isolated barrier
• 24 V DC supply (Power Rail)
• Dry contact or NAMUR inputs
• Selectable frequency trip values
• 2 relay contact outputs
• Start-up override
• Selectable mode of operation
• Line fault detection (LFD)
• Up to SIL 2 acc. to IEC 61508
Function
This isolated barrier is used for intrinsic safety applications. It
is a zero speed/standstill monitor that accepts input frequency
pulses and triggers an output when the frequency drops below
a selected value.
Two startup override values are available. This unit can also
be used to determine rotation direction.
During an error condition, relays revert to their de-energized
state and LEDs indicate the fault according to NAMUR NE44.
The available diagnostic LEDs show rotation detection, limit
trip indicator, power on, and hardware error indication.
The unit is easily programmed via switches mounted on the
front of the unit.
A unique collective error messaging feature is available when
used with the Power Rail system.
For additional information, refer to www.pepperl-fuchs.com.
2
Features
1
3
4
6
2
5
13 15
12
9
10
7
14
11
8
KFD2-SR2-Ex2.W.SM
1
2
OUT CHK PWR
S2
S1
S3
III
Front view
Switch S1:
Trip value frequency
Switch S2:
Trip value frequency
LED green:
Power supply
Removable terminals
green
LED yellow:
Relay output I
LED yellow:
Relay output II
Switch S3:
Start-up override/
Rotation direction detection
LEDs flashing red:
Error
Removable terminals
blue
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