Equipotential Bonding - Weller PUD 81R Manuel D'utilisation

Connect the control unit to the power supply. Switch on the unit at the power switch
(1). When switching on the unit, a self-test is carried out in which all display elements
(2) are switched on briefly. The electronic system then switches automatically to the
set temperature and displays this value. Constant illumination means that the system
is overheating. The blinking light signals that the operating temperature has been rea-
ched.
Setting the temperature
The digital display (2) shows the actual value temperature. By pressing the UP or
DOWN key (3) (4) the digital display (2) switches to the setpoint. The setpoint can be
changed by tapping or by firmly pressing the UP or DOWN button (3) (4) in the desi-
red direction. Pressing the button will change the setpoint quickly. The digital display
(2) returns automatically to the actual value approximately 2 seconds after releasing
the button.
Standard setback
If the soldering tool is not used within a period of 20 minutes the temperature will be
automatically reduced to a standby temperature of 150 °C (300 °F). After three
setback periods (60 min.) the "AUTO OFF" function will be activated and the soldering
iron will be switched off.
Activating the standard setback function: When switching on the unit press the "UP"
button until "ON" appears in the display. Use the same process to switch the unit off.
"OFF" will appear in the display (state upon delivery).
The use of very fine soldering tips may have a negative effect on reliable function.
Setting the Temperature Window
Press the "Up" and "Down" buttons (3) (4) simultaneously for approx. 2 sec. The
current value (in °C/°F) set for the temperature window appears in the display (set
in the factory to "000").
The factory setting of "000" means that the temperature monitoring circuit is disab-
led and the un-powered contact (9) is always switched low.
°C Display
The setting "001-099" corresponds to: the size of the temperature window ± 1°C to
± 99°C.
PK Elektronik Vertriebs GmbH, E-Mail: info@pkelektronik.com, Internet: www.pkelektronik.com
°F Display
The setting "001-178" corresponds to: the size of the temperature window ± 1°F to
± 178°F.
Un-Powered Contact
If the actual temperature of the soldering iron is WITHIN the temperature window
set (tolerance band), the un-powered contact is switched to low impedance.
If the temperature is OUTSIDE of the temperature window set, this is indicated on
the display (5) at 2 sec. intervals with "HI" (HIGH: temperature is too high) or "LO"
(LOW: temperature is too low) and the un-powered contact is high impedance.
An opto-coupler's transistor output forms the un-powered contact in the unit. It is
therefore necessary to pay attention to the polarity of the voltage to be switched.
PLUS (+) on pin 1
MINUS (-) on pin 2
This contact can be loaded up to max. 24 V / 20 mA
Maintenance
The transition between the heating element / sensor and the tip of the soldering iron
may not come in contact with dirt, foreign particles or become damaged, since this
affects the precision of the temperature control.

3. Equipotential bonding

The various circuit elements of the 3.5 mm jack bush make 4 variations possible:
Hard-grounded: No plug (delivery form)
Equipotential bonding: With plug, equalizer at center contact
(impedance 0 ohms)
Potential free: With plug
Soft-grounded: With plug and soldered resistance. Grounding via set
resistance value.
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