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Marsh Bellofram Automatic Timing & Controls Division 322B Series Motor Drive Cycle Progress Timer

Marsh Bellofram Automatic Timing & Controls Division 322B Series Motor Drive Cycle Progress Timer
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Marsh Bellofram Automatic Timing & Controls Division 322B Series Motor Drive Cycle Progress Timer - 1

322B Series Automatic Timing & Controls automatictiming.com 800.727.5646 12Electro Mechanical Timers // 322B Series 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. PRICE/PERFORMANCE VALUE: Although it is priced like a TDR, the 322B provides the versatile timing functions and features of much more expensive automatic reset timers. INSTANTANEOUS AND DELAYED LOAD SWITCHES: Because the standard 322B includes an instantaneous switch as well as two delayed switches, it can be used in the On-Delay mode for interval and/or delayed control, with either a momentary or sustained start signal. All three switches are mounted on a sliding deck which facilitates replacement and maintenance. SURFACE OR FLUSH MOUNT: The 322B is provided with hardware for surface mounting or, if desired, flush mounting through a single 15/16" OD cutout in a 1/8" panel. CYCLE PROGRESS INDICATION: A pointer in the dial knob rotates during the cycle, continuously showing the time remaining until time-out. The 322B is a synchronous motor-driven timer with an electricallyoperated clutch equipped either for On-Delay or Off-Delay operation. ON-DELAY: When power is applied (start signal sustained on), the clutch engages, the motor begins to drive a cam toward its zero position, and the instantaneous switch transfers from one set of contacts to the other. At the end of the timed period, the cam trips one of the delayed switches, but the motor continues to run. A brief time later (about 2-1/2% to 5% of full scale), the cam trips the second delayed switch, stopping the motor but leaving the clutch engaged. The 322B resets when power is removed from the clutch. OFF-DELAY: Timing begins when power is removed (start signal off) from the spring-loaded, normally-engaged clutch. The timer resets when power is restored to the clutch, thus disengaging it and transferring the instantaneous switch from one set of contacts to the other. Action of the delayed contacts is the same as with the On-Delay timer. A power outage stops the motor but does not reset the Off-Delay 322B; the timer completes the interrupted cycle when power is restored. M o t o r - D r i v e n C y c le P r o g r e ss Timer TERMINAL WIRING \\\SPECIFICATIONS MODEL Choice of ON-Delay or OFF-Delay operation (not field-convertible) RANGES 12 standard ranges, from 5 SEC to 5 HRS at 60Hz (6 SEC to 6 HRS at 50 Hz) REPEAT ACCURACY ± 2% of dial range. RESET TIME 150 ms. MIN. SETTING 5% of dial range. LIFE EXPECTANCY MECHANICAL: 2,500,000 cycles (average) CONTACTS: 2,500,000 operations under resistive or inductive load of 1A TIMING MODES SINGLE CYCLE: interval, delay or pulse. LOAD SWITCHES INSTANTANEOUS: one, SPDT, precision type. DELAYED: two, SPDT, precision type. CONTACT RATINGS (non-inductive): 10 A at 120 VAC 5 A at 240V AC TERMINALS 11-point terminal block on side of housing; all terminals accept .250" push-on connectors. Terminals 1, 2, 4, 9 and 11 are split connectors for use with either one .250" or two .110" push-on connectors. POWER REQUIREMENTS 120 or 240V, 50 or 60 Hz. (±10%, - 15%) Running Current 121 mA (14.5 VA) at 120V Inrush Current 157 mA (18.9 VA) at 120V TEMPERATURE RATING 32° to 120°F (0 to 50°C) WEIGHT NET: 1 lb. 8 oz. SHIPPING: 2 lbs. \\\ WIRING \\\ OPERATION

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Marsh Bellofram Automatic Timing & Controls Division 322B Series Motor Drive Cycle Progress Timer - 2

GRAY—Circuit Open 800.727.5646 automatictiming.com Automatic Timing & Controls 322B Series Electomechanical Timer // 322B Series 13 SWITCH CONTACTS ON DELAY Timing Sequence** Before Start During Cycle * End of Cycle Instantaneous 4-3 4-5 Delayed (D2) 11-6 11-7 Delayed (D1) 9-10 9-8 *D2 trips approximately 2-1/2% of range after end of cycle. ** Assumes a sustained closed start signal (i.e. longer than the dial set time). SWITCH CONTACTS OFF DELAY Timing Sequence** Before Start During Cycle * End of Cycle Instantaneous 4-3 4-5 Delayed (D2) 11-6 11-7 Delayed (D1) 9-10 9-8 *D2 trips...

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