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OPERATION

FUNCTIONS: To use the 385 you must apply power to terminals

16 and 2, terminal 1 is the start/reset or momentary start input

terminal. You must also apply voltage to terminal 15 (clock/count

input) to start timing or place a count, if power is removed from

terminal 15 when you are timing the 385 will stop where it is

and continue when power is reapplied to terminal 15. The 385

was designed to replace most of the functions of the ATC model

375. Most of these functions can be done with the relay arrange-

ment 1 and 2 modes of operation. The arrangement 3 mode was

not implemented, and most arrangement 3 applications can be

done with the flip-flop mode of operation. The 385 can function

as a ON-Delay or OFF-Delay timer or counter in arrangement 1,

(ATC model 365, 366) to allow this, preset 1 and preset 3 must

be set to 999 hours, the 385 will interpret this as infinite time

and display as “INF”. Preset 2 will be the set time and allow a

setting of 999 hours. Relay 1 will act as an instantaneous relay,

and Relay 2 as a delayed relay. The 385 when set as a standard

timer operates in hours, minutes, and seconds with a movable

decimal point, also the 385 can operate in hours:minutes and

minutes:seconds with a maximum setting of 99:59 (see DIP

SWITCH SETUP).

NEW MODES OF OPERATION: The 385 can perform as a Flip-Flop

timer or counter with batch. Preset 1 is the first set time and Pre-

set 2 is the second set time. Preset 3 is the batch, which it stops

at after a certain number of flip-flop cycles up to 999, or stops at

any desired time. In this mode you cannot use the hours:minutes

and minutes:seconds operation. The other new mode of opera-

tion is the Flip-Flop timer or counter with dwell. This is the mode

to be used when a standard Flip-Flop is needed. This new mode

is designed to have a first set time (Preset 1) then a dwell time

(Preset 3) followed by the second set time (Preset 2), when used

in repeat cycle there is a dwell after Preset 2 also. To use as a

standard Flip-Flop set the dwell time to “0”. All of the modes can

be set for a voltage or no voltage start, momentary or sustained

start, and repeat or single cycles.

THE DISPLAY: A highly visible dual display consists of three

digits with a movable decimal point or four digits for counting.

There is a horizontal timing bar “

” which appears to the

right of the upper display and blinks once per second during

timing. This is very useful in showing that the timer is timing

especially when the digits do not change rapidly as in the hours

ranges. The timing bar blinks rapidly at time-out as well. The

lower display is DIP switch selectable to display the preset time

or counts for any one of the four presets, and the upper display

will show that presets cycle progress.

UNDERSTANDING THE PRESETS: There are three program-

mable presets, Preset 1, Preset 2, and Preset 3. There is a

totalizer for each mode of operation, this preset is designated

Preset 4. This preset is for display only and increments a count

at the end of each cycle, to reset the totalizer to zero you must

go into programming mode (see DIP SWITCH SETUP) and set all

four digits to zero. Once the totalizer reaches 9999 it will go to

E000, the maximum count is E999 which actually has a count

value of 10999. When changing or setting a preset in run mode,

the display will revert back to the running time after a button

has not been used for 10 seconds.

Automatic Timing & Controls

800.727.5646

atcdiversified.com

Automatic Timing & Controls

800.727.5646

atcdiversified.com