11
UK
5.3 Protection against high medium temperatures
For medium temperatures over 50 °C (122 °F) some parts of the housing can heat up to over
65 °C (140 °F)�
► Protect the housing against contact with flammable substances and unintentional contact�
6 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 EN50178, SELV, PELV�
For the scope of validity cULus: The device shall be supplied from an isolating
transformer having a secondary Listed fuse rated as noted in the following table�
Overcurrent protection
Control-circuit wire size
Maximum protective device rating
Ampere
AWG
(mm
2
)
26
(0�13)
1
24
(0�20)
2
22
(0�32)
3
20
(0�52)
5
18
(0�82)
7
16
(1�3)
10
► Disconnect power, connect the unit as follows:
Pin1
Ub+
Pin3
Ub-
Pin4 (OUT1)
Switching signal: limit values for volumetric flow�
Pin2 (OUT2)
Switching signal: limit values for volumetric flow�
Switching signal: limit values for temperature�
Core colours of ifm sockets: 1 = BN (brown), 2 = WH (white), 3 = BU (blue), 4 = BK (black)�