Bellofram Precision Controls
Timers
Percentage Timers
ATC Percentage Timers are available in several models including the Model CP single circuit repeat cycle timer is a continuous cycling control where the ON or circuit closure time is dial adjusted for a percentage of the total time cycle. The ATC 304 incorporates heavy-duty contacts that are capable of switching loads as large as 4.6 KW directly. And the 304GX operates like the 304G, only with cycle progress memory and a latching relay. The 304GX saves progress when power is removed, and will resume timing when power is reapplied. The relay only changes state when the cycle reaches the set point or the end of the cycle. Easily the most rugged and dependable of industrial percentage timers.
Electromechanical Timers
ATC Mechanical Timers are noted for their circuit flexibility. The 305E provides the highest accuracy among analog timers. Available for either ON-Delay or OFF-Delay operation. The 305E provides delay, interval or pulse timing function for up to 7 load circuits through two instantaneous and two delayed switches. It features a plug-in design and cycle progress indication. The 322B is a Dial-Adjustable TDR with cycle progress indication, the ATC 322B can also be used as a low-cost automatic reset timer for a wide range of interval, delay and pulse timing functions, in either ON-delay or OFF-delay operation.
Cam Timer
Cam timers from ATC are compact and economical motor-driven timers. The 324C precisely controls one to twelve load circuits through easily-set screwdriver-adjustable cams. Each timer provides a wide range of cycle times through a set of interchangeable gears. With ATC’s unique split-cam design, each side of the cam is separately screwdriver-adjustable in either direction: either side determines the precise instant during the cycle when the switch will actuate, the other side determines how long the switch will remain actuated. Adjustments are easy and precise: 1/4 turn of the adjusting screw equals 0.5% of cycle time. A setting disc, calibrated in 1% increments, facilitates program set-up and indicates cycle progress.
Repeat Cycle Timers
ATC’s Repeat Cycle Timers include the 342B and 422A models. With two separately adjustable MOS digital timing circuits, the 342B is prewired to provide Flip-Flop operation of a DPDT load relay. The 342B also features cycle progress annunciation and multiple range adjustability for each circuit. The 422A FLIP-FLOP is available with Repeat Cycle operation. During Repeat Cycle operation the 422A cycles ON and OFF repeatedly, allowing periodic cycling of a load. Two knobs are available to individually adjust the ON-time and the OFF-time. The 422A can be ordered with either the relay being energized during the first timing period or de-energized during the first.
1/16 Din Timers
Automatic Timing DIN Timers include multi-mode, push-button, digital and multi function capabilities. The 405A is available with one set of SPDT instantaneous contacts and one set of SPDT delayed contacts. The instantaneous contacts transfer as soon as the timer is powered. The 425A is set digitally by rotating each setting knob until the desired Time Preset is displayed by the number wheels on the front of the timer. The digital setting allows exact, accurate and repeatable timing cycles.
Weekly Timer
The ATC 7DT-2CH DIN Rail Timer is ideally suited for timing applications needing a daily or weekly schedule. The clear LCD display provides visible indication of output, mode, day and time. With two independent channels and 16A contacts, the powerful 7DT-2CH delivers high accuracy in a convenient DIN Rail mounting package. The LE7M-2, seven day weekly timer offers a wide range of control flexibility through simple programming for each day individually or repeated for two through seven days. The weekly timer has two independent SPDT relay outputs each of which can be programmed in any of three timing modes. The timer can be front panel, base, or DIN rail mounted with all hardware for the three methods supplied with the unit.
Time Delay Relays
ATC’s Time Delay Relays offer an economical solid-state TDR with the 319 model that maintains excellent repeat accuracy despite wide voltage and temperature variations, even after long periods of down-time. ATC model 328 provides a choice of ON-delay, OFF-delay or interval operation for any timing period between 50 mSec and 10 hours...all in the same timer. ATC model MTA-91H Multi-function Time Delay Relay delivers unsurpassed performance in a plug-in package. Select from 10 configurable timing modes and a timing range from 0.1 sec to 10 days to meet your specific needs. Universally powered from 12-240 VAC/VDC, the MTA-91H allows users to stock one timer for many timing applications
Diversified DIP Switch or DIN-rail TDRs
Available in DIP switch selectable socket mount (plug-in) or DIN-rail mounted versions, Marsh Bellofram time delay relays (also known as TDRs or timers) are used to equip industrial machinery, conveyor belts, exhaust fans, heating systems, lubricators, and pump and motor controls with timed sequence delay, soft-start delay or auto-start functions for added machinery and equipment protection.
Diversified Socket Mounted Time Delay Relays
Marsh Bellofram socket mounted relay outputs offer the same high-reliability performance as DIN-rail mounted versions, with the convenience of quick and easy socket mounting into a variety of installation environments.
Panel Mounted Digtal Timers
Automatic Timing & Controls Shawnee and Long Ranger names have become standards in the timing industry. The ATC 350 series Shawnee II timer is 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. The ATC 360 series Long Ranger timer is microprocessor-based digital timer with three rotary knobs for setting and adjustment of the Preset. The ATC 650 series timer is a micro-processor-based control that can function as either a timer or a counter. It has a 4-1/2 digit LCD that can provide an indication of either the time or count value remaining or elapsed.
