AC Input, Pulse
Cleaning of Bag House Dust Collectors
DNC-T2020 shown
Operating Logic: The control can function in 2
modes:
Continuous Mode: The pressure switch terminals are shorted. Upon
application of input voltage, the control activates output #1 after the
preset off time. It will continue to activate outputs sequentially until
input voltage is removed.
On Demand Mode: The pressure switch terminals 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 outputs.
Program wire allows the user to select the maximum number of outputs to
be activated.
Note: Controls are shipped with jumper across pressure
File #E65038
Digital Timing Circuitry: Allows for stable timing from -40°F to
150°F temperature range
Pulse Time: Line synchronized to eliminate 8 milliseconds triac
turn off variation
10 Amp-400/600V Output Triacs: For maximum protection against
output shorts. 200 VA load rating.
RTV Coating: Conformally coated for protection against vibration,
humidity and contamination
2 Modes of Operation: Can be operated continuously or "on
demand" via external pressure switch
Field Selectable: For numbers of outputs required
LED Indicators: For compartment 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
Time Delay
On-Time: Adjustable from 50 to 500 milliseconds
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 voltage 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
File #E65038
