Amperite DFA Series Adjustable Recycling Timer Data Sheet

DFA Series

… Solid state CMOS digital recycle

Adjustable Recycling

Timer

The Amperite DFA series adjustable recycling timers provide a continuously operating
off/on cycle as long as power is applied to the input terminals. Two knob operated
potentiometers provide user adjustment of both the flash rate and duty cycle. One knob
sets the Off time; the other sets the On time. Standard models allow both the Off time and
On time to be adjusted over a 100:1 range. Custom timing is available.

Timing Mode:
Off/On recycling (flasher) timer. The initial timing period, after application of power, is
"off". An option allows the unit to cycle "on" upon application of power. Standard timing
ranges (Off and On time) are as follows:

(flasher) timer circuitry
… DPDT (2 form C) isolated 10
ampere relay contacts
… Off and On time-user adjustable
over a 100:1 span
… 12V to 120V input voltage
available-both AC and DC models
… UL File #E96739 (M)
… CSA File #LR62586-5

A: 0.1 second to 10 seconds G: 1 - 4 hours

B: 0.25 second to 25 seconds

C: 0.6 second to 60 seconds I: .6 minutes to 60 minutes

D: 1.2 second to 120 seconds J: .1 minute to 10 minutes

E: 1.8 second to 180 seconds K: 10 minutes to 24 hours

F: 1 minute to 100 minutes M: 1 - 10 hours

Custom Timing Is Available. Fixed timing is available from 0.1 secs thru 240 Hrs. If

H: 14.4 minutes to 24 hours

fixed timing is desired, please indicate S for secs., M for mins., & H for hours.

Timing Diagram:

Contact Information:

Arrangement: 2 form C (DPDT) - Diagram C
Contact Material: Silver - Cadmium Oxide
Rating (Resistive):
10A @ 240V AC Resistive
15A @ 30V DC Resistive
15A @ 120V AC Resistive
1/3 HP @ 120V AC
1/2 HP @ 250V AC
Expected Life @ 25°C : 10 Million operations, Mechanical
100,000 operations minimum at rated loads

Environmental Information:
Temperature Range: Storage: -60°C to +105°C (-76°F to +221°F); Operating: -45°C to
+70°C (-49°F to +158°F)

Mechanical Information:
Termination: 8 pin Octal Style Plug or 11-pin spade terminals (Diagram C & D)
Enclosure: White plastic case. Knob adjustable models have a dial scale for reference
only. LDFA version has a black case.
Weight: 4 oz (114g) approx.

Timing Specifications:
Timing - Fixed: 0.1 secs thru 240 Hrs.
Timing Adjustment: Two (2) knob adjustable potentiometers.
Timing Ranges: See Above.
Timing Tolerance: Fixed Units: ± 5%; 1% units are available at extra cost. Adjustable
Units: -0 to +10% of maximum specified delay time. Minimum specified value or less at
low end.
Repeatability: ± 1%
Release Time: 60 ms typical, 100 ms maximum
Timing Cycle Interrupt Transfer: None
Reset: Upon interruption of power

Initial Dielectric Strength:

Between open contacts: 1000V RMS
Between adjacent contacts: 1500V RMS
Between contacts & coil: 1500V RMS

Input Information:
Voltage: AC units- 12V, 24V and 120V; DC units- 12V, 24V, 48V and110V. Custom
voltages are available.
Power Requirement: AC units: 3 VA or less DC units: 3 Watts or less
Transient Protection: 1 JOULE MOV, Polarity Protection: On DC units - Yes

Input Voltages & Limits:

Nominal Minimum

Maximum

12V AC 10V 14V

24V AC 20V 28V

120V AC

105V 130V

12V DC 11V 14V

24V DC 20V 32V

48V DC 41V 55V

110V DC

95V 125V

Outline Dimensions:

Wiring Diagrams:

Ordering Information:

Definition of a part number for the Amperite DFA Series recycling Flasher.
Example:

A: Denotes nominal input voltage. Voltages Available: 12, 24, & 120V AC; 12, 24, 48 &
110V DC. Custom Voltages are available.

B: Denotes type of input current required for operation:
A = AC - Alternating Current
D = DC - Direct Current

C: Denotes first timing period. See timing mode chart above for proper code letter. For
standard units this is an "OFF"time delay. Fixed timing available. If fixed timing is
desired, please indicate S for secs., M for mins., or H for hours.

D: Denotes second timing period. For standard units this is an "ON" timing period. Fixed
timing available.
*Note: If the ON time delay period is desired to occur first upon application of input
power, place an "R" after the second timing period code letter, and enter range for ON­TIME in "C" & OFF-TIME in "D".

E: Enter "L" if optional 11-pin spade terminals are required (Diagrams B & D).

F: Denotes 10 ampere 2 form C adjustable recycle flasher - DFA Series.

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