Marsh Bellofram Automatic Timing & Controls 407B Series 1/16 DIN Multi-Mode Timer - Marsh Bellofram - #1

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800.727.5646 automatictiming.com Automatic Timing & Controls 407B Series 1/16 DIN Timers // 407B Series 25 Multiple Timing Modes: The 407B 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 407B begins timing when the timer is energized. In ON-Delay mode, the contacts transfer at time out. When in the OFF-Delay mode, the 407B 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 407B timers can be powered using 24-240 VAC or 24 VDC power, greatly simplifying ordering and inventory management of replacement units. High Accuracy: The 407B’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 and is watertight when panel mounted. The 407B is mounted in an 11-pin round socket. With an optional mounting clip, the 407B can be panel mounted. The Dial on the 407B 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 accessible 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 407B 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 the 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. 1 / 1 6 DIN Mu l t i -Mo d e T i m er The 407B Directly Replaces 407A. • 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 hours 5 and 50 SEC, MIN, and hours • 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 • Watertight when panel mounted • Range and Mode select are tamper proof when panel mounted • Unique flashing cycle progress indication \\\OPERATION 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.