Pepperl Fuchs KFD2-SL-4 Technical Data

Solenoid Driver, Power Amplifier

2

KFD2-SL-4

24 V DC

14+
15-

11

12

Power Rail

V

V

10+

9+

8+

7+

1+

2+

3+

4+

5-

6-

24 V DCERR

I

II

III

IV

I

II

III

VI

Germany: [phone]Pepperl+Fuchs Group

Refer to "General Notes Relating to Pepperl+Fuchs Product Information".

USA: [phone] Singapore: [phone]

www.pepperl-fuchs.com [e-mail] [e-mail]

[e-mail]

KFD2-SL-4

4-channel signal conditioner

<

24 V DC supply (Power Rail)

<

Output 600 mA per channel

<

Logic inputs

<

Common safety-oriented disable input

<

Line fault detection (LFD)

<

Up to SIL 2 acc. to IEC 61508

<

Function

This signal conditioner is a 4-channel barrier with outputs that switch 600 mA to high-power solenoids. It is also used as power amplifier up to a
switching frequency of 1 kHz.
Two channels per module can be paralleled. The output current of a parallel combination is 1.2 A. If the supply voltage falls below 18 V, the
outputs will be switched off.
The outputs are sustained short-circuit proofed and overload-proofed
Lead breakage and short circuit, which is selected via DIP switch, is indicated by a red LED and through the collective error output via Power Rail.
With the common disable input (terminals 11 and 12), the auxiliary power for all 4 channels can be switched off simultaneously. This central
switch-off is also indicated by a red LED and reported as an error signal to the Power Rail.

Connection

Technical Data

General specifications

Signal type Digital Output

Functional safety related parameters

Safety Integrity Level (SIL) SIL 2

Supply

Connection Power Rail or terminals 14+, 15-

Rated voltage U

Undervoltage switching-off ≤ 18 V DC

Quiescent current indication < 50 mA at 24 V DC

Release date: 2020-09-23 Date of issue: 2020-09-23 Filename: 112730_eng.pdf

r

20 ... 30 V DC

1

Solenoid Driver, Power Amplifier KFD2-SL-4

Germany: [phone]Pepperl+Fuchs Group

Refer to "General Notes Relating to Pepperl+Fuchs Product Information".

USA: [phone] Singapore: [phone]

www.pepperl-fuchs.com [e-mail] [e-mail]

[e-mail]

Technical Data

Power dissipation < 2 W supply voltage 30 V, all outputs loaded with 600 mA

Input

Connection side control side

Connection Terminals 7+, 8+, 9+, 10+, 15-

Input current approx. 2 mA at 24 V DC

Signal level 0-signal: 0 ... 5 V DC

Common disable

Connection terminals 11, 12

Input current ≤ 50 mA at 24 V, depolarized

Switch on min. 15 V

Switch off max. 5 V

Output

Connection side field side

Current I

Voltage Uetyp. 23.8 V

Open loop voltage Us24 V DC

Connection terminals 1+, 2+, 3+, 4+, 5-, 6-

Switching frequency f 1 kHz

Output rated operating current 600 mA per channel , sustained short-circuit proof and overload-proof

Off-state current I

Line fault detection lead breakage: ≤ 4 mA

Galvanic isolation

Common disable/input and outputs basic insulation according to IEC/EN 61010-1, rated insulation voltage 50 V

Indicators/settings

Display elements LEDs

Labeling space for labeling at the front

Directive conformity

Electromagnetic compatibility

Directive 2014/30/EU EN 61326-1:2013 (industrial locations)

Conformity

Electromagnetic compatibility NE 21:2011

Degree of protection IEC 60529:2001

Ambient conditions

Ambient temperature -20 ... 60 °C (-4 ... 140 °F)

Mechanical specifications

Degree of protection IP20

Connection screw terminals

Mass approx. 100 g

Dimensions 20 x 119 x 115 mm (0.8 x 4.7 x 4.5 inch) , housing type B2

Mounting on 35 mm DIN mounting rail acc. to EN 60715:2001

General information

Supplementary information Observe the certificates, declarations of conformity, instruction manuals, and manuals

1-signal: 16 ... 30 V

currentless state: downscale of the outputs

≤ 600 mA

e

< 1 mA at 24 V DC

r

where applicable. For information see www.pepperl-fuchs.com.

eff

Release date: 2020-09-23 Date of issue: 2020-09-23 Filename: 112730_eng.pdf

2

1

3

4

6

2
5

13 15

12

9

10

7

14

11

8

KFD2-SL-4

PWR21

OFF43

LED green:
Power supply

Removable terminals
green

Removable terminals
green

Front view

LED yellow/red: Channel I-IV
Switching status/
Fault signal

LED red:
Common disable

Lead monitoring switch
S1 up to S4

Solenoid Driver, Power Amplifier KFD2-SL-4

Germany: [phone]Pepperl+Fuchs Group

Refer to "General Notes Relating to Pepperl+Fuchs Product Information".

USA: [phone] Singapore: [phone]

www.pepperl-fuchs.com [e-mail] [e-mail]

[e-mail]

Assembly

Accessories

KFD2-EB2 Power Feed Module

UPR-03 Universal Power Rail with end caps and cover, 3 conductors, length: 2 m

UPR-03-M Universal Power Rail with end caps and cover, 3 conductors, length: 1,6 m

UPR-03-S Universal Power Rail with end caps and cover, 3 conductors, length: 0.8 m

K-DUCT-GY

K-DUCT-GY-UPR-03 Profile rail with UPR-03-* insert, 3 conductors, wiring comb field side gray

Release date: 2020-09-23 Date of issue: 2020-09-23 Filename: 112730_eng.pdf

3

Germany: [phone]Pepperl+Fuchs Group

Refer to "General Notes Relating to Pepperl+Fuchs Product Information".

USA: [phone] Singapore: [phone]

www.pepperl-fuchs.com [e-mail] [e-mail]

[e-mail]

Solenoid Driver, Power Amplifier

KFD2-SL-4

Additional Information

The outputs are switched high and current-limited for each channel (electronically pulsed). They are suited for inductive loads
such as magnet operated valves or solenoid coils and incandescent lamps or indicator lamps.

Each channel is continuous short circuit- and overload-proof. In this case, the max. power loss in the device of 2 W (U
is not exceeded.

2 channels per device may be paralleled input- and output-sided. The output current of this dual combination may not exceed

1.2 A. Both remaining channels may not be loaded with more than (in sum) 200 mA.

The maximum current loading capacity of the Power Rail is to be considered. Alternatively, the device may be supplied with the
terminals 14+, 15-.

Device behavior

Behavior in the event of lead breakage (LB)

=24V)

b

Input (control side) Switch position S1 ... S4

line fault detection

0-Signal II off not active

1-Signal II yellow not active

0-Signal I flashing red active

1-Signal I yellow not active

LED indication

switching state/fault signal

Collective error

Lead breakage detection is only active when the output is deactivated (0-Signal).

Behavior in the event of a short circuit (SC)

Input (control side) Switch position S1 ... S4

line fault detection

0-Signal II off not active

1-Signal II yellow not active

0-Signal I off not active

1-Signal I flashing red active

LED indication

switching state/fault signal

Collective error

Short circuit detection is only active when the output is activated (1-Signal).

Behavior when common disable is active

If common disable is active (0-Signal at terminals 11, 12), all outputs are switched to a de-energized state. When line fault
monitoring S1 ... S4 of a channel is active, its switching state/fault signal LED flashes red and the collective error is output to the
Power Rail.

Behavior in the event of undervoltage

If the supply voltage falls below 18 V, the device reacts as follows:

• All outputs are disabled.

• The green power LED goes out.

• A collective error message is output.

Configuration

Release date: 2020-09-23 Date of issue: 2020-09-23 Filename: 112730_eng.pdf

4

Germany: [phone]Pepperl+Fuchs Group

Refer to "General Notes Relating to Pepperl+Fuchs Product Information".

USA: [phone] Singapore: [phone]

www.pepperl-fuchs.com [e-mail] [e-mail]

[e-mail]

Solenoid Driver, Power Amplifier

Switch position

Switch Channel Function Position

S1 1LB/SCON I

OFF II

S2 2LB/SCON I

OFF II

S3 3LB/SCON I

OFF II

S4 4LB/SCON I

OFF II

KFD2-SL-4

Release date: 2020-09-23 Date of issue: 2020-09-23 Filename: 112730_eng.pdf

5