
7
UK
4 Electrical connection
The unit must be connected by a qualified electrician�
The national and international regulations for the installation of electrical
equipment must be adhered to�
Voltage supply to EN 50178, SELV, PELV�
► Disconnect power.
► Connect the unit as follows:
A: SI5002; SI0521 (positive switching); B: SI5003 (negative switching)
Core colours of ifm sockets:
1 = BN (brown), 2 = WH (white), 3 = BU (blue), 4 = BK (black)
5 Operating and display elements
1: Operation display
• The green LEDs indicate the current flow (the LEDs 0 to 9 represent the range between
no flow and maximum flow)�
• Two LEDs indicate the position of the switch points (orange = output closed, red = output
open)�
2, 3: Setting buttons for adjustment and configuration