ATC-Automatic Timing & Control 353C Series Data Sheet

A compact version of the versatile 333 Timer, the ATC 353 is its
exact functional duplicate. Packaged in a 72mm2 DIN-Size housing,
it occupies 40% less panel space and costs proportionately less.
Modern production and assembly techniques have all but
eliminated hand wiring, enhancing the reliability and life
expectancy of the 353.

CONTROL VERSATILITY: The 353 operates either as a repeat cycle
pulse generator or in single-cycle interval or delayed mode. You
choose the kind of control action you want by installing jumpers
on the terminal block. It also provides a choice of control output.
Choose a standard plug-in SPDT relay or optional SPST solid-state
switch module plus an independent-24VDC output signal at
Terminal 16.

COMPUTER TESTED RELIABILITY: The solid-state 353 is manufac-
tured from a series of computer-tested plug-in circuit boards and
assembled virtually without hand wiring. Because it has no moving
parts in its logic circuits, its life expectancy is practically unlim-
ited. Even the load relay — the 353’s only significant mechanical
component — has a life expectancy of 100,000,000 operations
(no load), while the optional solid-state switch module has virtually
unlimited life expectancy. As a result, the 353 achieves an overall
reliability that surpasses even the high level achieved by previous
Shawnee timers.

SAVE 40% IN PANEL SPACE AND COST: Packaged in a 72mm2
DIN-size housing, the 353 occupies 40% less panel space than
previous IC timers. Modern production and assembly techniques
have substantially reduced manufacturing costs and resulted in a
45% cost saving.

WIDE RANGE: Each Shawnee II 353 timer covers the overall span of

0.01 SEC to 999.9 MIN in four field-convertible ranges.

EASY TO SET: The Shawnee timer is easily and accurately set
even with work gloves on. Push any of its four toggle levers in any
sequence until the number you want appears above it. You can
decrease as well as increase each number by pushing the levers up
or down. You can change the setting at any time, even during
a cycle.

NOISE IMMUNITY: The 353 does not have to be shielded: its
transformer power supply, full-wave bridges, buffered logic and
other design characteristics render it immune to the electrical noise
that is sometimes encountered in industrial environments thus
eliminating false starts and reset due to voltage spikes.

CYCLE PROGRESS INDICATION: The Shawnee 353 indicating timer
provides cycle progress indication on a four-digit display located
immediately above the digital setting number wheels.

OUTSTANDING REPEAT ACCURACY: Unsurpassed among industrial
timers regardless of cost, the Shawnee 353 has a repeat accuracy
of ± 10 milliseconds on any setting within its overall range of

999.9 MIN, even in the face of wide swings in temperature or
voltage and regardless of the amount of reset time between cycles.

PLUG-IN AND DUST-TIGHT: All 353 timers feature true plug-in
design and are dust-tight from the front of panel.

E48329

Shawnee II Digital

Programmable Timer

MODEL NUMBER

MODEL NUMBER 353C 30 P

RANGE

999.9 SEC 346

999.9 MIN 347

99.99 SEC 351

99.99 MIN 352
Special 000

VOLTAGE & FREQUENCY
120/60 A
240/60 B
120/50 C
240/50 D

ARRANGEMENT

With Display (On Delay) 30

FEATURES
Basic plug-in unit P

Standard unit X
Special K

ACCESSORIES:

Surface mounting bracket kit 353-260-27-00
Retrofit kit 305-265-61-70

The 353C Directly

Replaces 353B & 353A

Functional Replacement

for the 333 Timer

PANEL MOUNTED DIGITAL TIMERS 353C Series

Automatic Timing & Controls

SPECIFICATIONS

RANGES Four field convertible ranges

0.01 - 99.99 SEC

0.01 - 99.99 MIN

0.1 - 999.9 SEC

0.1 - 999.9 MIN

TIMING Single cycle (interval or delayed) and repeat
MODES cycle pulse generator.

VOLTAGE REQUIREMENTS

START/RESET VOLTAGE REQUIREMENTS
SIGNAL Positive Polarity Ready at 4.5V min.

Reset at 1.0V max.
Negative Polarity Ready at 3.0V min.
Reset at 1.0V max
Max. Continuous Input 40V.
Ripple Voltage must not go below
minimum required
AC Line Voltage Input 5K ohms.
Impedance

RESET TIME
Circuit Reset 1 mSEC max.

Relay Drop-Out 20 mSEC max.
START SWITCH REQUIREMENTS
(ISOLATED CONTACT)
Switch Rating 10mA 30V
Min Open Resistance 1 megohm
Max. Closed Resistance 20K ohms
LATCHING MODE OPERATION

(INTERVAL ONLY)

PANEL MOUNTED DIGITAL TIMERS 353C Series

Min. Duration 50 μSEC
Start Signal
Max. Duration continuous
Start Signal
Reset when signal is removed

TEMPERATURE 32° to 140°F (0 to 60°C)
RATING

POWER 120V 95 to 132V, 50/60 Hz
REQUIREMENTS inrush – 0.4 A

running – 0.04 A
240V 190 to 264V, 50/60 Hz
inrush – 0.2 A
running – 0.02 A ±10%

DC POWER Voltage -24V ± 10%
SUPPLY OUTPUT Current 40 mA max.
(TERMINAL 7)

DC OUTPUT Voltage ON – -24V ± 10%
(TERMINAL 16) OFF – -1V or less

Current with relay–5 mA max.
without relay–40 mA max
Impedance on – 10 ohms max.
off – 10K ohms.

PULSE PULSE ON TIME(with relay): 80 mSEC ± 20 mSEC
GENERATOR (may be shortened or lengthened by installing a
OPERATION resistor or capacitor, respectively, across Terminals

4 and 11; see Operation Section for details.)

LOAD RELAY LIFE 100,000,000 operations (no load.)
CONTACT RATING: 5A at 120V AC

REPEAT ±0.01 SEC on all ranges.
ACCURACY

MINIMUM 99.99 SEC or MIN ranges: 0.01 SEC or MIN, respectively.
SETTING 999.9 SEC or MIN ranges: 0.1 SEC or MIN, respectively.

MOUNTING Standard Hardware is provided to mount timer so
ACCESSORIES that it is dust-tight from front of panel.

Optional Surface mounting without and with front
facing terminals. (See Accessory section
of catalog)
NEMA 12 NEMA 12 case (1 timer)

WEIGHT NET: 1 lb., 7 oz. Shipping: 2 lbs.

DIMENSIONS (INCHES)

WIRING

TERMINAL WIRING

Automatic Timing & Controls