Belt Speed Min/Max Adjustment
Setting the low speed pot adjustment:
The low speed pot should be set so the belt (or sprocket) moves very slow at the lowest setting on the controller,
just before the controller is clicked in the off position.
Setting the High speed pot adjustment:
The high setting is set so 130 VDC is the maximum voltage to the motor, a volt meter is needed for the high
speed adjustment.
Pot near the white wires LOW SPEED
Pot near the blue wires HIGH SPEED
Caution: Do not touch the
open wires around the
controller and the fuse
holder!!
Troubleshooting
Temperature Controller
Auto Tuning
Automatic Tuning has been performed at factory for all machines. Automatic Tuning must be performed by the customer for the
following reasons; When equipment is other than 240v (e.g. 208v), replacing a controller, replacing a
“
J
”
sensor, and/or new heat
ing elements. Controller set point value must be set between 650°
-
700°F (343°
-
371°C) before beginning auto
-
tuning. Auto tuning
should only be performed when the heater temperature is below 300° F (150° C).
Procedure:
a.) Press the return key for at least 6 seconds (maximum 16 seconds). This initializes the auto
-
tune function.
(To abort auto
-
tuning procedure, press and release the return key.)
b.) The decimal point in the lower right hand corner of the PV display flashes to indicate that auto
-
tuning is in progress. Auto
-
tune is
complete when flashing stops
c.) Automatic Tuning may take up to ½ hour. Remember, while the display point flashes, the controller is autotuning.
Note:
If an AT error (AtEr) occurs, the automatic tuning process is aborted due to the system operating in ON
-
OFF control mode
(PB=0). The process will also be aborted if the set point is set too close to the process temperature or if there is insufficient capacity in
the system to reach the set point (e.g. inadequate heating power available). Upon completion of auto
-
tuning the new PID settings are
automatically entered into the controller
’
s non
-
volatile memory.
Manual Mode
In the event of a faulty J Sensor, the display will read
“
SbEr
”.
Entering manual mode will bypass the faulty sensor and allow you to run
your dryer manually.. Press and hold both the scroll and return key for 6 seconds to enter manual mode. Display on controller will show
H000. Press the up or down arrow to set percentage of time the heater will cycle on and off. (i.e. a setting of 80.0 will cycle heater on
80% of time and off 20%). Controller can remain in this mode while resuming production.
Celsius /
The temperature controller on your Vastex Infrared dryer is normally set to Fahrenheit as a default. Follow the procedure below to
Fahrenheit
switch the controller from Fahrenheit to Celsius.
a.) Press and hold the Scroll Key button for 6 seconds. When you let go,
the display will change to
“
ASPI
”
and a numerical value will be given.
b.) Press the Scroll key 6 times to display the letters
“
td
”
and a
numerical value will be given again.
c.) Press and hold the Scroll Key for 6 seconds. Release the button and
the display will change to
“
LoCL
”
and a numerical value given.
d.) Press the Scroll key 6 times to display the letters
“
CF
”.
If machine is
set to display Fahrenheit, this value will be 0. If the machine is set to
Celsius, this value will be
“1”
e.)
To change the controller from Fahrenheit to Celsius:
-
Press the Up Key one time to change the displayed
number to
“1”.
The display will now read in Celsius.
To change the controller from Celsius to Fahrenheit:
-
Press the Down key one time to change the displayed
number to
“0”.
The display will now read in Fahrenheit
f.)
Press the Return Key one time to take you back to normal operation
Caution!
Power must be turned off at the external disconnect, or the machine unplugged,
before entering any part of this machine. The red Power Light labeled
“
Power
”
must be off!! A
qualified electrician should perform any internal testing requiring power on!
Pg. 14
