39

Automatic Timing & Controls

800.727.5646

atcdiversified.com

MULTIPLE TIMING MODES: The 407 is available with selectable On-

Delay, Off-Delay or Interval timing modes. These timing modes energize

a set of DPDT output contacts. When in the On-Delay mode, the 407 be-

gins timing when the timer is energized. In On-Delay mode, the contacts

transfer at time out. When in the Off-Delay mode, the 407 begins timing

when the Start input is de-energized. In Off-Delay mode, the contacts

transfer at time out. When in the Interval mode, the contacts transfer

when the timer is energized. In Interval mode, the contacts release at

time out.

UNIVERSAL POWER SUPPLY: All 407 timers can be powered using

24-240 VAC or 24 VDC power, greatly simplifying ordering and inventory

management of replacement units.

HIGH ACCURACY: The 407’s timing circuit is not a simple RC circuit.

It utilizes the sophistication of a proprietary integrated circuit that

includes counting technology along with a stable oscillator to provide

repeatable time delays.

1/16 DIN HOUSING: The 48mm2 (1/16 DIN) housing is compact. The

407 is mounted in an 11-pin round socket. With an optional mounting

clip, the 407 can be panel mounted.

The Dial on the 407 is extra-large and is easy to read. When fractional

ranges are selected, decimal points are clearly indicated.

The Mode SELECT AND RANGE select switches are located on the side

of the unit, so that when panel mounted, these switches are not acces-

sible to the operator. This tamper proof feature prevents unauthorized

or hazardous changes to the timing mode and range from being made.

CYCLE PROGRESS INDICATION: The 407 LED indicator provides a unique

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 pulses at a high rate. (In

the 1, 5, 10 and 50 second ranges, the LED is Off before timing, steady

On during timing, and pulsing On after time-out).

Timing begins when the start switch is closed (ON-delay and INT

modes) or opened (OFF-delay mode). This starts an oscillator which

runs at a frequency determined by the time setting. A fixed number of

counts from the oscillator determines the end of the timing cycle. The

time required to accomplish this depends upon the oscillator frequency.

During timing, An LED located on the dial face blinks. For the first 10%

of the cycle, the LED repeatedly blinks once followed by a pause. For

the second 10%, it blinks twice and so on indicating he cycle progress.

The LED flashes rapidly and continuously after time out.

ON-DELAY MODE: At time out, the DPDT relay transfers its contacts.

These contacts remain transferred until the start switch is opened or

power is removed by some other means.

INTERVAL MODE: When the start switch is closed, the DPDT relay

transfers 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 407B then resets and is ready for

another cycle.

OFF-DELAY MODE: Power must be applied to the timer before and

during timing (terminals #10 & 2). Upon closure of the start switch,

the DPDT relay transfers its contacts. The timing begins when the start

switch is opened. The relay remains energized during timing. At time

out, the relay de-energizes.

OPERATIONS

1/16 DIN Multi-Mode Timer

• Selectable ON-Delay/OFF-Delay/Interval Timing Modes

• Separate Start Input

• Output Contacts rated 10A at 120/240 VAC and 30 VDC

• Six Timing Ranges in a single unit

• 1 and 10 SEC, MIN, and HRS

5 and 50 SEC, MIN, and HRS

• Universal Power Supply; 24-240 VAC and 24 VDC

• 48mm2 DIN Standard housing

• Large and easy to read dial shows decimal points

• Round (octal) socket mount or mount in panel cutout

• Range and Mode select are tamper proof when

panel mounted

• Unique flashing cycle progress indication

E48329

Automatic Timing & Controls

800.727.5646

atcdiversified.com

Special note for Off-Delay operation: When operated from AC, the

start switch must be of a dry contact type such as a relay contact or

mechanical switch. When operated from DC, the start switch can be

a dry contact type such as a relay contact or mechanical switch. In

addition, a solid-state device may be used as long as its saturation

voltage drop is less than 1.5 VDC at 50mA.

The 407C Directly Replaces 407B and 407A