Filter
Top Products
UdSP Upper Display Look
None, Process Value, Limit 1 Low Set,
Limit 1 High Set, Limit 2 Low Set, Limit
2 High Set, Alarm 2 Low Set, Alarm 2
High Set, Limit 3 Low Set, Limit 3 High
Set, Alarm 3 Low Set, Alarm 3 High Set
Process -
LdSP Lower Display Look
None, Process Value, Limit 1 Low Set,
Limit 1 High Set, Limit 2 Low Set, Limit
2 High Set, Alarm 2 Low Set, Alarm 2
High Set, Limit 3 Low Set, Limit 3 High
Set, Alarm 3 Low Set, Alarm 3 High Set
Limit 1
High Set
-
LOC Lockout
(0) no lockout, (1) Programming and
Setup Page Locked, (2) Limit Set
Points are the only Operation Page
parameters accesible, (3) Full Lockout.
0 2
4-2 System Operation Procedures
1. Turn the disconnect switch on the control panel to the ON position. Power is applied to the voltage
line fuses and line side of the control power switch.
2. Turn the control power switch to the
ON position. Power is applied to the PLC and touch screen.
Push the start button on the PLC and the valve will move to the start position as follows:
a. The valve motor rotates until the cam switch makes 2 transitions.
b. If the cam switch does not make a transition within 10 seconds, a valve
motor fault alarm is generated. The alarm horn and light are activated. The
valve motor, heaters, and blower shut off. Pressing the
ALARM SILENCE
pushbutton will deactivate the alarm horn and light.
Note: Cycle control power to restart the dryer.
c. The valve will normally complete one full cycle (revolution). If sequence
shutdown is not initiated (in 10 Seconds) and control power switch or
disconnect are turned off:
1. The bed in process at power-down will remain in
process.
2. The bed in regeneration at power-down will remain in
regeneration.
3. The regeneration timing cycle will restart from the
beginning.
3. Once the control power is on and no fault conditions exist, turning the Off-On switch to the ON
position and pressing the
START button on the touch screen will start the dryer as follows:
a. The process heater is turned on and controlled by the PLC.
b. The process/regen blower is started.
c. The regen heater is turned on and the regeneration timing sequence is
initiated. The regen heater is controlled by the PLC.
Portable Drying/Conveying Systems Chapter 4: Operation 38 of 63