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Marsh Bellofram Diversified Electronics Division TDF Series Repeat Cycle-OFF Time First Relay Output

Marsh Bellofram Diversified Electronics Division TDF Series Repeat Cycle-OFF Time First Relay Output

Product catalog summary

Overview: The TDF Series is a time delay relay system designed for repeat cycle operations, where the OFF time is initiated upon voltage application. The relay cycles between OFF and ON states until the voltage is removed, with independently adjustable time periods.

Model Specifications: The model number TDF A indicates a supply voltage of either 24 VAC/DC or 110/120 VAC/DC. The operation type can be knob adjustable, lock nut adjustable, or fixed, with an 8-pin octal or blade plug-in enclosure style. Delay periods are customizable as per standard ranges.

Specifications:

Timing Ranges: Virtually unlimited, with standard ranges available.
Output Rating: DPDT, 10 A @ 250 VAC or 24 VDC, resistive; 211 VA @ 120 VAC, inductive.
Timing Tolerances: Minimum setting +0–20%, maximum setting ±10%.
Repeatability: 1% maximum, no first cycle effect.
Reset Times: 100 mSEC before time out, 50 mSEC after time out.
Recycle Time: 40 mSEC.
Supply Voltage: 24 or 120 VAC or VDC, 50/60 Hz; ±10%.
False Transfer: No.
Reverse Polarity Protected: Yes.
Power Consumption: Approximately 3 watts.
Temperature Rating: Operate between 32° to 131°F (0° to +55°C), storage between -49° to 185°F (-45° to +85°C).
Life Expectancy: Mechanical: 10 million operations minimum; Electrical: 100,000 operations at rated load.
Weight: 6.4 oz.

Additional Information: Wiring and dimensions are provided for installation guidance. The operation involves a supply voltage that triggers the relay's timing cycle.

Catalog excerpts

Marsh Bellofram Diversified Electronics Division TDF Series Repeat Cycle-OFF Time First Relay Output-1

800.727.5646 atcdiversified.com Diversified Electronics TDF Series Time Delay Relays // TDF Series 73 Repeat Cy c l e –OF F Time F ir s t R e l a y Ou t p ut Application of voltage to the input of the timer initiates the OFF time. Upon completion of the OFF time, the relay energizes and the ON time begins. Upon completion of the ON time, the relay de-energizes and one cycle is completed. This OFF/ON cycling continues until voltage is removed from the input. The OFF/ON time periods are independently adjustable. MODEL NUMBER >>>>>> TDF A Supply Voltage 24 K A 24 VAC or DC 110/120 VAC or DC 120 Type of Operation Knob Adjustable Lock Nut Adjustable L Fixed F Enclosure Style 8-pin octal plug-in Blade plug-in B Delay Period See page 84 for standard ranges available Example: TDF-120-ALA-300—Repeat cycle, 120 Volts AC or DC, both delays are independently adjustable from 3 to 300 seconds, 8-pin octal plug-in \\\SPECIFICATIONS TIMING RANGES Virtually unlimited. See page 84 for standard ranges available. OUTPUT RATING DPDT, 10 A @ 250 VAC or 24 VDC, resistive; 211 VA @ 120 VAC, inductive TIMING TOLERANCES Minimum Setting +0–20% Maximum Setting ±10% REPEATABILITY 1% maximum; no first cycle effect RESET TIMES Before Time Out 100 mSEC After Time Out 50 mSEC RECYCLE TIME 40 mSEC SUPPLY VOLTAGE 24 or 120 VAC or VDC, 50/60 Hz; ±10% FALSE TRANSFER No REVERSE POLARITY PROTECTED Yes POWER CONSUMPTION 3 watts (approximately) TEMPERATURE RATING Operate 32° to 131°F (0° to +55°C) Storage -49° to 185°F (-45° to +85°C) LIFE EXPECTANCY Mechanical 10 million operations (minimum) Electrical 100,000 operations @ rated load WEIGHT 6.4 oz. RB-08/PF083A 70-463-1 \\\WIRING \\\DIMENSIONS (INCHES) \\\OPERATION SUPPLY VOLTAGE OUTPUT T1 T2 T1 T2 T1

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