Controlling The Medium Temperature Via Ets-D - IKA IKAMAG RCT basic Mode D'emploi

The function „heating" is switched on and/or off by its correspon-
ding switch. When the function „heating" is switched on, the
LED „temp" shines green. The temperature of the heating plate is
set on the rotary knob „temp" with its corresponding dial (0-
300°C). The heating plate is heated up to the temperature set on
the rotary knop. During the heating phase, the color of the LED
„temp" changes from green to orange (orange = supply oof ener-
gy to heating plate; green = set temperature is reached.).
In the event of a disturbance in the control circuit, the heating
plate is permanently cut off by the safety circuit.
PLEASE NOTE!
The haeting plate only heats up, if the contact plug has been
plugged (the contact plug is undetachably fitted to the instru-
ment), or if an ETS-D and/or a contact thermometer has been
connected.
(see illustration 2)
illustration 2
1
5
4 2
+12V
3
DIN 45322
connection contact thermometer
10
Controlling the Medium Temperature
via ETS-D or Contact Thermometer
The control of the medium temperature via ETS-D or contact-ther-
mometer should be preferred. Its advantages are: just a short hea-
ting-up phase after setting the rated temperature, practically no
temperature drift and only a minor temperature waviness. The
medium temperature is optimized with the aid of a FUZZY Logic
Contoller, that means , that in steady state any overshooting of
the temperature is reduced to a minimum.
The rear of the instrument houses the diode bushing for connec-
tion the ETS-D or contact thermometer, or for plugging the contact
plug (see illustration 2).
The elektronics of the instrument supply a test current that
has to flow over plug pins 3 and 5 of the diode bushing in
order for the heating plate to heat.
Safety contact thermometers
acc. to DIN 12 878 class 2 or acc. Gerstel are connected with a
three-wire cable, the test current flows through the contact ther-
mometer.
Safety function:
If the test current is interrupted because of e.g. breakage of contact
thermometer or falling out of the cable plug, the heating cuts off.
The required plug allocation is indicated on a reference plate
above the diode bushing.
Contact thermometer without safety circuit
acc. to DIN 12 878 class 0. The instrument only heats if the test
current circuit is closed by an electrical connection of the plug
pins 3 and 5.
2-wire connecting cables:
Connect plug pins 3 and 5 of the instrument plug.
mains connection
RCT B 1097