Electrical Connection - SICK FFU Betriebsanleitung

3.3

Electrical connection

8025609/2020-06-10 | SICK AG
Subject to change without notice
The FFU is connected using a pre-assembled female cable connector with a 5-pin
M12x1 plug connector. With the power switched off, plug the female cable connector
into the sensor and screw it tight. Connect the cable according to its function. After the
supply voltage has been applied, the sensor carries out a self-test. Once installed, the
sensor is ready for operation on completion of the self-test (4 s). The display shows the
currently measured measurement value.
Connection diagram for 5-pin variant
Figure 4: Connection of 5-pin variant
PIN Wire color Function
1 Brown L+
2 White Digital output Q1
Functions:
1. Pulse
2. Empty pipe reporting
3. Dosing output
4. Limit value monitoring
5. Negative flow
3 Blue GND
4 Black Communication
5 Gray Analog output QA
Functions:
1. Flow
2. Temperature
MOUNTING AND INSTALLATION
1
2
5
4
3
Description
Supply voltage 18 V DC ... 30 V DC
Digital output Q1
Freely adjustable within the range of
0.1 to 3,000 ml/pulse in increments of
0.1 ml/pulse, NPN or PNP transistor,
Max. load 18 ... 30 V / 100 mA.
Programmable output of 0 V or 24 V for
empty measuring pipe.
Programmable output of 0 V or 24 V
when dosing quantity reached.
Programmable output of 0 V or 24 V
when outside a set upper or lower limit.
Programmable output of 0 V or 24 V for
negative flow.
Supply ground: 0 V
Communication interface
4 ... 20 mA; 0 ... 20 mA
For example: 0 l/min => 4 mA
36 l/min => 20 mA
Alarm => 3.5 mA
(Depending on the configured measur-
ing range)
F F U ( D N 2 5 , D N 3 2 , D N 4 0 , D N 5 0 )
4 5