WIKA CF2S - Manual (Page 37)

Operating Instructions Temperature Indicating Controller CF2S
V1.2 • 08/2004 - 37 -
Notice
• Use a thermocouple and compensating lead wire according to the input
specifications of this controller.
• Use a 3-wire RTD system according to the input specifications of this controller.
• This controller has neither built-in power switch nor fuse. Therefore, it is
necessary to install them in the circuit near the external controller.
(Recommended fuse: Time-lag fuse, rated voltage 250V, rated current 2A)
• In the case of 24Vdc for power source, do not confuse the polarity.
• For the relay contact output type, use an external auxiliary electromagnetic
switch to protect the built-in relay contact.
• When wiring, keep the input wire (Thermocouple, RTD, etc.) away from AC
source and the load wire to avoid external interference.
• Use a thick wire (1.25 to 2.0mm²) for the earth ground.
n Solderless terminal
Use a solderless terminal with an insulation sleeve that fits to an M3 screw as shown
below.
3.2mm
5.8mm or less
3.2mm
5.
8mm or l
ess