14033590.01 10/2014 GB/D
WIKA operating instructions model CS4S
17
GB
■
These controllers feature neither a built-in switch nor a fuse. It is therefore
necessary to fit these into the circuit outside the controllers (recommended
fuse: slow-acting, rated voltage AC 250 V, rated current 2 A).
■
When using a direct current supply for a controller with a AC/DC 24 V power
supply, take care with the polarity.
■
With a controller with relay output, use an additional electromagnetic
switch, appropriately sized for the load, to protect the built-in relay contacts.
■
When wiring the input cable, in order to prevent external interference, do
not run it close to alternating current sources and load cables.
■
Under no circumstances should the power supply ever be connected to the
sensor input terminals or the connected sensor be brought into contact with
the power supply.
Solder-free cable shoes
Use solder-free cable shoes with insulated sleeving which are suitable for M3 size screws
in accordance with the following drawings.
The tightening torque for fastening the terminal screws should between 0.6 Nm and
1.0 Nm.
Option: Heater burnout alarm
(1) This alarm is not possible for measuring phase-
controlled currents.
(2) Use the current transformer (CT) supplied. Pass
one of the connecting cables of the heater current
circuit through the hole in the current transformer.
(3) Do not run the connecting cable for the current
transformer close to any alternating current
sources or high-current cables, in order to avoid
any disruptive influences.
Ø 3.2 mm
Ø 3.2 mm
5.8 mm or
less
5.8 mm or
less
11
12
CT input terminals
Heating circuit
CT
Heating
6. Commissioning, operation