821TD10H-UNI SCHNEIDER | Alldatasheet

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Definition: Time Delay is defined as the controlled period between the functioning of two events. A Time Delay relay is a combination of an electromechanical output relay and a control circuit. The control circuit is comprised of solid state components and timing circuits that control operation of the relay and timing range. Typical time delay functions include On-Delay, Repeat cycle (starting off), Interval, Off-Delay, Retriggerable One Shot, Repeat cycle (starting on), Pulse Generator, One Shot, On/Off Delay, and Memory Latch. Each function is explained in the table below. Time delay relays have a broad choice of timing ranges from less than one second to many days. There are many choices of timing adjustments from calibrated external knobs, DIP switches, thumbwheel switches, or recessed potentiometer. The output contacts on the electromechanical output relay are direct wired to the output terminals. The contact load ratings are specified for each specific type of time delay relay. Understanding the differences between all the functions available in time delay relays can sometimes be a daunting task. When designing circuits using time delay relays questions such as: “What initiates a time delay relay?” “Does the timing start with the application or release of voltage?” “When does the output relay come on?” must be asked. Time delay relays are simply control relays with a time delay built in. Their purpose is to control an event based on time. The difference between relays and time delay relays is when the output contacts open & close: on a control relay, it happens when voltage is applied and removed from the coil; on time delay relays, the contacts will open or close before or after a pre-selected, timed interval. Typically, time delay relays are initiated or triggered by one of two methods:

  • application of input voltage (On Delay, Interval On, Flasher, Repeat Cycle, Delayed Interval & Interval/Flasher).
  • opening or closing of a trigger signal (Off Delay, Single Shot & Watchdog). These trigger signals can be one of two designs:
  • a control switch (dry contact), i.e., limit switch, push button, float switch, etc.
  • voltage (commonly known as a power trigger). To help understand, some definitions are important: Input Voltage: Control voltage applied to the input terminals (see wiring diagrams below). Depending on the function, input voltage will either initiate the unit or make it ready to initiate when a trigger signal is applied. Trigger Signal: On certain timing functions, a trigger signal is used to initiate the unit after input voltage has been applied. As noted above, this trigger signal can either be a control switch (dry contact switch) or a power trigger (voltage). Output (Load): Every time delay relay has an internal relay (usually mechanical) with contacts that open & close to control the load. They are represented by the dotted lines in the wiring diagrams. Note that the user must provide the voltage to power the load being switched by the output contacts of the time delay relay. The following tables contain both written and visual descriptions on how the common timing functions operate. A Timing Chart shows the relationship between Input Voltage, Trigger Signal (if present) and Output Contacts. SECTION 5 Magnecraft Solution Guide 105A Magnecraft Solution Guide 105A Time Delay Relays – Application Data

Function Operation Timing Chart When the input voltage U is applied, timing delay t begins. Relay contacts R change state after time delay is complete. Contacts R return to their shelf state when input voltage U is removed. Trigger switch is not used in this function. When input voltage U is applied, time delay t begins. When time delay t is complete, relay contacts R change state for time delay t . This cycle will repeat until input voltage U is removed. Trigger switch is not used in this function. t tt t tt t When input voltage U is applied, relay contacts R change state immediately and timing cycle begins. When time delay is complete, contacts return to shelf state. When input voltage U is removed, contacts will also return to their shelf state. Trigger switch is not used in this function. t Input voltage U must be applied continuously . When trigger switch S is closed, relay contacts R change state. When trigger switch S is opened, delay t begins. When delay t is complete, contacts R return to their shelf state. If trigger switch S is closed before time delay t is complete, then time is reset. When trigger switch S is opened, the delay begins again, and relay contacts R remain in their energized state. If input voltage U is removed, relay contacts R return to their shelf state. tt REPEAT CYCLE Starting On When input voltage U is applied, relay contacts R change state immediately and time delay t begins. When time delay t is complete, contacts return to their shelf state for time delay t . This cycle will repeat until input voltage U is removed. Trigger switch is not used in this function. RETRIGGERABLE ONE SHOT Upon application of input voltage U, the relay is ready to accept trigger signal S. Upon application of the trigger signal S, the relay contacts R transfer and the preset time t begins. At the end of the preset time t, the relay contacts R return to their normal condition unless the trigger switch S is opened and closed prior to time out t (before preset time elapses). Continuous cycling of the trigger switch S at a rate faster than the preset time will cause the relay contacts R to remain closed. If input voltage U is removed, relay contacts R return to their shelf state. tt PULSE GENERATOR ONE SHOT Upon application of input voltage U , a single output pulse of 0.5 seconds is delivered to relay after time delay t. Power must be removed and reapplied to repeat pulse. Trigger switch is not used in this function. Upon application of input voltage U , the relay is ready to accept trigger signal S. Upon application of the trigger signal S , the relay contacts R transfer and the preset time t begins. During time-out, the trigger signal S is ignored. The relay resets by applying the trigger switch S when the relay is not energized. ON/OFF DELAY S Make/Break MEMORY LATCH S Make Input voltage U must be applied continuously . When trigger switch S is closed, time delay t begins. When time delay t is complete, relay contacts R change state and remain transferred until trigger switch S is opened. If input voltage U is removed, relay contacts R return to their shelf state. Input voltage U must be applied continuously . Output changes state with ever y trigger switch S closure. If input voltage U is removed, relay contacts R return to their shelf state. t t t t t t U R U R U R U S R U R U S R U S R U S R R U S U R t Pulse t on off t on off close open on off on off on off close open on off t Pulse on off close open on off close open on off close open tt t t t OFF DELAY S Break ON DELAY Power On INTERVAL Power On REPEAT CYCLE Starting Off U = Input Voltage S = Trigger Switch R = Relay Contacts t = Time Delay Magnecraft Solution Guide 105A SECTION 5 Magnecraft Solution Guide 105A

14 AWG Wire. Output Indication Red LED Light. Solid State Circuitry Used for Time and function Control. DIN Rail Mounting Mounts Directly On a DIN Rail. Input Indication Green LED Light. Time Setting Select Between 10 Different Time Scales. Fine Time Setting Ultimate Control in Accuracy. Function Choose Between 10 Different Functions. Output Terminals Accepts up to a 14 AWG Wire. SECTION 5 Magnecraft Solution Guide 105A Magnecraft Solution Guide 105A Advantages of the 820 Series Time Delay Relays

www.magnecraft.com 847-441-2540 Optional Panel Adapter (16-788C1) See Section 3 p.18 Input Terminals Accepts up to a 14 AWG Wire. Output Indication Red LED Light. Solid State Circuitry Used for Time and function Control. DIN Rail Mounting Mounts Directly On a DIN Rail. Input Indication Green LED Light. Time Setting Select Between 10 Different Time Scales. Fine Time Setting Ultimate Control in Accuracy. Function Choose Between 10 Different Functions. Output Terminals Accepts up to a 14 AWG Wire. Magnecraft Solution Guide 105A SECTION 5 Magnecraft Solution Guide 105A The new 820 Series Time Delay Relays are DIN rail mountable products offering 10 different timing functions, 2 status LEDs, ultra-wide timing range (0.1 sec to 10 days) and a universal voltage input (12-240 VAC/VDC) all in one modular package. The 821 is available as a 15 amp SPDT timer while its counterpart 822 is available as a DPDT timer also capable of switching up to 15 amps per pole.

  • Offers a “one stop solution” for your power management system.
  • Available in both SPDT and DPDT contact configuration.
  • The two LED status indicators indicate status at a glance.
  • The Green LED is on when power is applied to the input terminals. The Red LED blinks during time-out, and is ON when the output is energized.
  • Color and appearance designed for high visibility in all environments.
  • Only 17.5 mm wide making it ideal for tight spaces.
  • Engineering availability allows for customized relay solutions.

File No. E234203 WHITE General Specifications (@ 25°C) (UL 508) AC DC SECTION 5 Magnecraft Solution Guide 105A Magnecraft Solution Guide 105AMagnecraft Solution Guide 105A

820 Series Time Delay Relays/SPDT, DPDT 15 Amp Rating

A V V HP HP Pilot Duty mA Blinks = Timing On = Energized VAC / VDC VA W sec min hr day ms ms V V AWG (mm2) in lb (Nm) grams 821TD10H-UNI SPDT Silver Alloy

240 AC, 50/60 Hz

1/2 @ 120VAC 1 @ 240 VAC B300 100 Red 12….240 85% to 110% 1.7 Green A,B,C,D,E,F,G,H,I,J 0.1….1 1….10 0.1….1 1….10 0.1….1 1….10 0.1….1 1….10 0.2 150 100,000 10,000,000 2500 AC 1000 AC 14 (2.1) 7.1 (0.8) UL, CE -30…+70 -20…+55 IP 20 Output Indication Red LED Output Terminals Input Indication Green LED Time Setting Fine Time Setting Function Supply Terminals Output Terminals DPDT (822 Version Only) DIN Mount Output Characteristics Number and type of Contacts Contact Material Current rating Switching voltage Minimum Switching Requirement Indication Input Characteristics Voltage Range Operating Range Maximum consumption Indication Timing Characteristics Functions Available Time Scales Time Ranges Available Tolerance Repeatability Reset Time Trigger Pulse Length Performance Characteristics Electrical Life Mechanical Life Dielectric strength Terminal Wire Capacity Terminal Torque (maximum) Environment Product certifications Ambient air temperature around the device Degree of protection Weight @ 240 VAC, 24 VDC LED % of Nominal LED (See page 5/3) Mechanical Setting Constant Voltage and Temperature Maximum Minimum Operations @ Rated Current (Resistive) Unpowered Input to Contacts Between Open Contacts Standard version Storage Operation 822TD10H-UNI DPDT Silver Alloy 1/2 @ 120VAC 1 @ 240 VAC B300 100 Red 12….240 85% to 110% 1.7 Green A,B,C,D,E,F,G,H,I,J 0.1….1 1….10 0.1….1 1….10 0.1….1 1….10 0.1….1 1….10 0.2 150 100,000 10,000,000 2500 AC 1000 AC 14 (2.1) 7.1 (0.8) UL, CE -30…+70 -20…+55 IP 20

(7.4) 0.3 0.7 (17.6) 0.6 (14.2) (5) 0.2 (65) (16) (45.3) 1.8 0.63 (67.5) 2.7 (90) 3.5 1.4

2.6 MAX

(34.2) 1.35 (3.4) 0.13 (35) 0.6 (16)0.236 (6) (16.71) 0.7 1.3 (34) 821 822 Part Number Builder R 1615 18 U R 2825 26 n SA1 A2 R 1615 18 U n SA1 A2 821TD10H-UNI 822TD10H-UNI INPUT VOLTAGE EXTERNAL CONTROL SWITCH 15 - COMMON 16 - NORMALLY CLOSED 18 - NORMALLY OPEN 26 - NORMALLY CLOSED 28 - NORMALLY OPEN 25 - COMMON INPUT VOLTAGE WIRING DIAGRAMS R 1615 18 U R 2825 26 n SA1 A2 R 1615 18 U n SA1 A2 821TD10H-UNI 822TD10H-UNI INPUT VOLTAGE EXTERNAL CONTROL SWITCH 15 - COMMON 16 - NORMALLY CLOSED 18 - NORMALLY OPEN 26 - NORMALLY CLOSED 28 - NORMALLY OPEN 25 - COMMON INPUT VOLTAGE Standard Part Numbers BOLD-FACED PART NUMBERS ARE NORMALLY STOCKED Optional Panel Adapter (16-788C1) See Section 3 p.18 Magnecraft Solution Guide 105A SECTION 5 Magnecraft Solution Guide 105AMagnecraft Solution Guide 105A www.magnecraft.com 847-441-2540 Input Voltage 12...240 VAC/VDC 12...240 VAC/VDC Timing Range 0.1s...10d 0.1s...10d Functions Available A,B,C,D,E,F,G,H,I,J A,B,C,D,E,F,G,H,I,J Contact Configuration SPDT DPDT Part Number 821TD10H-UNI 822TD10H-UNI Series 821 = SPDT 822 = DPDT Relay Style TD - Time Delay Input Voltage UNI = 12...240 VAC/VDC Number of Functions 10H = 10 Functions Rated Load Current

15 Amps

See Section 5 p.3