ATC-Automatic Timing & Control 339B Series Data Sheet

An economical solid-state TDR with octal plug-in base, the 339 maintains
excellent repeat accuracy despite wide voltage and temperature varia-
tions. even after long periods of down-time. Two models are available.
Each has six dial selected ranges from fractions of a second to as long as
10 hours. Each model has a selectable on-delay or interval timing mode.

WIDE CHOICE OF RANGES:

an electronic TDR, the 339 is also available with ranges as long as 10
hours. An unusually versatile timer, the 339A has six dial-selected
ranges—from 0.3 SEC to 3 hours or 1 SEC to 10 hours—and provides
dial-adjustable timing periods between 0.075 seconds and 10 hours. A
single 339 model thus accommodates the needs of a wide range of appli-
cations, allowing the user to select easily and precisely—an appropriate
range to permit optimum setting accuracy. The dial face automatically dis-
plays the selected range.

CYCLE PROGRESS INDICATION:

and effective method of cycle progress indication. Off before timing, the LED blinks
at an ever-increasing rate as the cycle progresses; once every 3-1/2 seconds during
the first 10% of the cycle, twice during the second 10%, and so on. At time-out, the
LED stays on constantly, pulsing at a high rate. (In the 1 and 10-second ranges, the LED
is off before timing, steady on during timing, and pulsing on after time-out.)

HIGH ACCURACY:

cation of a proprietary integrated circuit that includes counting technology along with a stable
oscillator to provide repeatable time delays.

MULTIPLE TIMING MODES:

delay or interval timing operation. The timing mode is selectable
by a switch on the 339 housing.

OPERATION

\\\

Timing begins when the start switch is closed. This starts an oscil-
lator which runs at a frequency determined by the time setting. A
fixed number of counts from the oscillator determines the end of
the time cycle. The time required to accomplish this depends on
the oscillator frequency. During timing, a LED located on the dial
face blinks. For the first ten percent of the cycle, the LED repeat-
edly blinks once followed by a pause, for the second 10%, it
blinks twice and so on indicating the cycle progress. It flashes rap-
idly and continuously after time out.

ON-DELAY MODE:

contacts. These contacts remain transferred until the start switch
is opened or power is removed by some other means. The 339
then resets and is ready for another cycle.

INTERVAL MODE:

its contacts. The contacts remain transferred until time out. The
timer will not start again until the start switch is opened or power
is removed by some other means. The 339 then resets and is
ready for another cycle.

WIRING

\\\

The 339’s timing circuit is not a simple RC circuit, but utilizes the sophisti-

At time out, the built-in relay transfers its

When timing begins, the built-in relay transfers

In addition to the short ranges expected of

The 339’s LED annunciator provides a unique

Every 339 can be used for either ON-

P

l

u

g

-

I

n

A

d

j

u

s

t

MODEL NUMBER >>>>>> 339B

Six dial-selected ranges

(.3 or 3 SEC, MIN, HR)

Six dial-selected ranges

(1 or 10 SEC, MIN, HR)

24 VAC, 50/60 Hz, 24 VDC

ACCESSORIES

8 Pin surface/DIN rail socket 0000-825-85-00
Hold down for above socket

(2 required)
Hold down for other sockets

(2 required)
Panel mounting bracket 0339-320-01-00

Plug-in socket kit (8-pin) 0319-261-45-00

339B Series

a

b

l

e

T

i

m

e

D

Range

Voltage & Frequency

120 VAC, 50/60 Hz

240 VAC, 50/60 Hz

12 VDC

Arrangement

ON-Delay, Interval mode

0339-025-03-00

0339-025-02-00

e

359

200

Special

y

a

l

Q

R

T

E

Features

Standard

Special

y

a

l

e

R

2

0

X

K

339B Series

//

Time Delay Relays

Powered by TCPDF (www.tcpdf.org)

TERMINAL

WIRING

Automatic Timing & Controls