Ropex RESISTRON PD-3 User manual

Industrie-Elektronik GmbH Tel: [phone] E-Mail: [email protected]
Gansäcker 21 Fax: [phone] Internet:www.ropex.de
D-74321-Bietigheim-Bissingen (Germany) Data subject to change
3.11.03
RESISTRON
PD-3 / PD-5
(KD, P-3/5)
GB
Operating
Instructions
RESISTRON/CIRUS temperature controllers are
available in several different variants. Some of these
controllers allow the set point to be selected by means
of an externally connected potentiometer.
ROPEX offers PD-3 (300°C range) and PD-5 (500°C
range) precision potentiometers, which are optimally
tuned to the controllers, for this purpose.
These potentiometers permit the SET temperature to
be adjusted exactly with the help of the digital display in
the window of the fine control knob. The number that
appears on the display corresponds to the SET
temperature in °C.
The PD-3 (or PD-5) precision potentiometer consists of
a P-3 (or P-5) setting potentiometer and a KD fine
control knob with digital display.
The information provided in the latest
version of the controller documentation shall
be heeded when using the PD-3 or PD-5
potentiometer, in order to avoid malfunctions.
Technical data
!
Type of construction Precision potentiometer with a digital fine control knob,
for front panel mounting
Resistance,
power PD-3 (P-3): 2kohms; 3 turns; 2.0W PD-5 (P-5): 2kohms; 5 turns; 2.0W
Set point indication
(KD knob) Window with digital display PD-3: 0…300
PD-5: 0…500
Accuracy Linearity +-0.15%
Degree of protection Front (KD knob): IP20; back (P-x potentiometer): IP00
Insulation voltage 1000VAC, 1min.
Ambient
temperature +5…+45°C
Weight Approx. 60g
Connecting cable
Type / cross-sections Flexible; 0.2…1.5mm² (AWG 16…12) Connection by means of soldering lugs
Note: Rigid cables break easily !

Page 2 PD-3 / PD-5
Wiring diagram
When you connect the potentiometer, please
note the direction of rotation, in order to
avoid malfunctions.
Dimensions
1
2
cw 3
3
12
!
26.5
28
Front panel cutout
Front panel Potentiometer
P-3 / P-5
KD knob
30
17 42
32
3
0 0 0

PD-3 / PD-5
Installing the PD-3/-5
(assembly of P-3/-5 and KD)
Proceed as follows to assemble/install the
potentiometer:
1. Make a cutout in the front panel
(section „Dimensions“ on page 2).
2. Insert the KD fine control knob into the front panel
cutout and screw it tight with the nut .
For assembly of the nut a hock spanner
(DIN 1810 contour A, diameter 32mm) shall be
used.
3. Screw the lock washer onto the P-3/-5
potentiometer with the two hexagon nuts .
4. Turn the potentiometer shaft counterclockwise as
far as the minimum resistance setting (0ohms).
Note: This is NOT necessarily the same as the shaft
end stop!
5. Turn the dial of the KD fine control knob until the
display indicates "000". Loosen the locating screw
on the underside of the knob.
6. Insert the shaft of the P-3/-5 potentiometer into the
KD knob from behind. The lock washer must
snap into the lugs on the KD knob. Then tighten the
locating screw again.
The shaft of the P-3/-5 potentiometer and the
dial of the KD fine control knob must remain
absolutely stationary until the installation is
complete. If they are moved, the display on the
knob will deviate from the value set with the
potentiometer.
How to order
KD knob Front panel
cutout Potentiometer P-3 / P-5
!
Precision potentiometer with digital fine control knob
PD-3 (resistance 2kohms, display 0…300): Art. No. 881103
PD-5 (resistance 2kohms, display 0…500): Art. No. 881105
Precision potentiometer (as spare part)
P-3 (resistance 2kohms, 3 turns): Art. No. 881003
P-5 (resistance 2kohms, 5 turns): Art. No. 881005
Fine control knob with digital display (as spare part)
KD: Art. No. 881113