P+FFrequency Converter with Trip Values

Features

• 1-channel signal conditioner

• 24 V DC supply (Power Rail)

• Input for 2- or 3-wire sensors, NAMUR sensors or dry 

contacts

• Input frequency 1 mHz ... 10 kHz

• Current output 0/4 mA ... 20 mA

• Relay contact and transistor output

• Start-up override

• Line fault detection (LFD)

• Up to SIL 2 acc. to IEC 61508/IEC 61511

Function

This signal conditioner provides the isolation for nonintrinsically safe applications.

The device is a universal frequency converter that changes a 

digital input signal into a proportional free adjustable 

0/4 mA ... 20 mA analog output signal and functions as a 

switch amplifier and a trip alarm.

The functions of the switch outputs (2 relay outputs and 

1 potential free transistor output) are easily adjustable [trip 

value display (min/max alarm), serially switched output, pulse 

divider output, error signal output].

The device is easily configured by the use of keypad or with 

the PACTware configuration software.

A fault is signalized by LEDs acc. to NAMUR NE44 and a 

separate collective error message output.

For additional information, refer to the manual and 

www.pepperl-fuchs.com.

General specifications

Signal type Digital Input

Functional safety related parameters

Safety Integrity Level (SIL) SIL 2

Supply

Connection terminals 23+, 24- or power feed module/Power Rail

Rated voltage Ur 20 ... 30 V DC

Rated current Ir approx. 100 mA

Power dissipation/power consumption ≤ 2 W / 2.2 W

Interface

Programming interface programming socket

Input

Connection side field side

Connection Input I: 2-wire sensor: terminals 1+, 3- three wire sensor: terminals 1+, 2- and 3 

input II: terminals 13+, 14- start-up override;

Input I 2- or 3-wire sensor, sensor acc. to EN 60947-5-6 (NAMUR) or mechanical contact

Open circuit voltage/short-circuit 

current 

22 V / 40 mA

Input resistance 4.7 kΩ

Switching point/switching hysteresis logic 1: > 2.5 mA ; logic 0: < 1.9 mA

Pulse duration > 50 µs

Input frequency 0.001 ... 10000 Hz

Line fault detection breakage I ≤ 0.15 mA; short-circuit I > 4 mA

Input II startup override: 1 ... 1000 s, adjustable in steps of 1 s

Active/Passive I > 4 mA (for min. 100 ms) / I < 1.5 mA

Open circuit voltage/short-circuit 

current 

18 V / 5 mA

Output

Connection side control side

Connection output I: terminals 10, 11, 12

output II: terminals 16, 17, 18

outout III: terminasl 19+, 20-

output IV: terminals 8+, 7-

Output I, II signal, relay

Contact loading 250 V AC / 2 A / cos φ ≥ 0.7 ; 40 V DC / 2 A

Mechanical life 5 x 107 switching cycles

Energized/De-energized delay approx. 20 ms / approx. 20 ms

Output III electronic output, passive

Contact loading 40 V DC

Signal level 1-signal: (L+) -2.5 V (50 mA, short-circuit/overload proof) 

0-signal: blocked output (off-state current ≤ 10 µA)

Output IV analog

Current range 0 ... 20 mA or 4 ... 20 mA

Open loop voltage ≤ 24 V DC

Load ≤ 650 Ω

Fault signal downscale I ≤ 3.6 mA , upscale ≥ 21.5 mA (acc. NAMUR NE43)

Collective error message Power Rail

Transfer characteristics

Input I 

Measurement range 0.001 ... 10000 Hz

Resolution 0.1 % of the measurement value , ≥ 0.001 Hz

Accuracy 0.1 % of the measurement value , > 0.001 Hz

Measuring time < 100 ms

Influence of ambient temperature 0.003 %/K (30 ppm)

Output I, II 

Response delay ≤ 200 ms

Output IV 

Resolution < 10 µA

Accuracy < 20 µA

Influence of ambient temperature 0.005 %/K (50 ppm)

Galvanic isolation

Input I/other circuits reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 Veff 

Output I, II/other circuits reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 Veff 

Mutual output I, II, III reinforced insulation according to IEC/EN 61010-1, rated insulation voltage 300 Veff 

Output III/power supply and collective 

error 

basic insulation according to IEC/EN 61010-1, rated insulation voltage 50 Veff

Output III/IV basic insulation according to IEC/EN 61010-1, rated insulation voltage 50 Veff

Output IV/power supply and collective 

error 

functional insulation acc. to IEC 62103, rated insulation voltage 50 Veff

Start-up override/power supply and 

collective error 

functional insulation acc. to IEC 62103, rated insulation voltage 50 Veff

Interface/power supply and collective 

error 

functional insulation acc. to IEC 62103, rated insulation voltage 50 Veff

Interface/output III basic insulation according to IEC/EN 61010-1, rated insulation voltage 50 Veff

Indicators/settings

Display elements LEDs , display

Control elements Control panel

Configuration via operating buttons 

via PACTware

Labeling space for labeling at the front

Directive conformity

Electromagnetic compatibility 

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

Low voltage 

Directive 2014/35/EU EN 61010-1:2010

Conformity

Electromagnetic compatibility NE 21:2006

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 300 g

Dimensions 40 x 119 x 115 mm (1.6 x 4.7 x 4.5 inch) , housing type C3