CAMCORP Cartridge Collector - Manual (Page 34)

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National Controls
Corporation
4
Contents
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Features
■ File #E65038
■ Digital Timing Circuitry:
Allows for stable timing
from
-40°F to 150°F temperature
range
■ Pulse Time: Line synchro-
nized to eliminate 8 mil-
liseconds triac tum off
variation
■ 10 Amp-400/600V Output
Triacs: For maximum pro-
tection against output
shorts. 200 VA load rating.
■ RTV Coating: Conformally
coated for protection
against vibration, humidi-
ty and contamination
■ 2 Modes of Operation:
Can be operated continu-
ously or "on demand" via
external pressure switch
■ Field Selectable: For num-
bers of outputs required
■ LED Indicators: For com-
partment being cleaned
indication
■ Rugged Timing
Adjustments: Large stable
potentiometers are used
for "on" and "off" time
adjustments
■ Metal Chassis Provided:
For mounting directly into
NEMA-4 box
■ Timer Life Tested for 24
Hours: To eliminate field
failures
■ Input Protection: 30 joule
metal oxide varistor
■ One Year Warranty:
Warranted to be free from
defects in materials or
workmanship for One
Year from date of purchase
■ Made in USA
C
R R
Dust Collector
Controls
Operating Logic: The control can function in 2
modes:
Continuous Mode: The pressure switch termi-
nals are shorted. Upon application of input volt-
age, the control activates output #1 after the pre-
set off time. It will continue to activate outputs
sequentially until input voltage is removed.
On Demand Mode: The pressure switch termi-
nals are connected to an isolated set of contacts of
a differential pressure switch. The control will
activate the outputs sequentially whenever the
pressure switch contacts are closed. When the
pressure switch contacts open, the output
sequencing stops. Re-closing of the contacts will
cause the control to resume activating the out-
puts.
Program wire allows the user to select the maxi-
mum number of outputs to be activated.
Note: Controls are shipped with jumper across pressure switch terminals
AC Input, Pulse
Cleaning of Bag
House Dust
Collectors
Models DNC-T2003
thru DNC-T2032
L1 L2 1 2 3 4 5 6 7 8 9 10 C
Pressure
switch TIMER #1
voltage
Input
120V
Last
Solenoid
S
S
Solenoid
Last
TIMER #2
C 10 9 8 7 6 5 4 3 2 1 L2 L1
Pressure switch
3867-1
dual coil latching relay.
reset coil energized last.
11
4
Contacts shown with
8
13 9
COM
coil
Reset
12
coil
Set
N.C.
COM
1
N.C.
N.O.
N.O.
5 10
14
Alternate action
To expand the number of outputs in "continuous
cleaning mode", any two timers can be connected via
a dual coil alternate action latch relay as shown in
the diagram to the right.
The output pulse from the last compartment of Timer
No. 1 activates the latch coil opening the reset contacts
connected to pressure switch terminals of Timer No. 1,
causing Timer No 1 to stop sequencing. At the same
time, the latch contacts connected to pressure switch
Timer No. 2 close which will cause Timer No. 2 to
start sequencing until the last output activation causes
the reset coil to unlatch the relay and Timer No. 1
begins sequencing. This cycle will continue until
voltage is removed from the system.
Wiring diagram to Facilitate
Expanded Output Mode
Time Delay
On-Time: Adjustable from 50 to 500 millisec-
onds
Off-Time: Range A - adjustable from 1.5 to 30
seconds; Range B - adjustable from 8.5 to 180
seconds
Note: Range S designates customer specified time
range. Consult factory for parameters
Repeatability: ± 3% over temperature and volt-
age ranges
Input
Operating Voltage:
120 ± 10%, 220 ±10% VAC
Frequency: 50/60 Hz
Power Consumption: 2 VA Max.
Output
Type: Solid-state switch (Triac)
Switch Rating: 200 VA maximum per output
Protection
Transient Voltage: 30 joule metal oxide varistor
Short Circuit Protection: 3 Amp. fuse
Environmental
Operating Temperature: -40°C to 66°C
Storage Temperature: -40°C to 70°C
Specifications