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© 2016 Littelfuse Protection Relays & Controls Time Delay Relays Dedicated - Recycle www.littelfuse.com/ksd3 Rev: 1-A-062116 KSD3 SERIES Recycling Flasher
Description
The KSD3 Series Digi-Timer is a cost effective approach for ON/OFF recycling applications. The on time is equal to the off time. An adjustment of the RT will change the time delays of both on and off times. This series is designed for general purpose commercial and industrial applications where a small, cost effective, reliable, solid-state timer is required. The factory calibration for fixed time delays is within 5% of the target time delay. The repeat accuracy, under stable conditions, is 0.5% of the selected time delay. This series is designed for popular AC and DC voltages. Time delays of 0.1 seconds to 1000 minutes are available in 6 ranges. The output is rated 1A steady and 10A inrush. The modules are totally solid state and encapsulated to protect the electronic circuitry. Operation (Recycling Flasher - ON Time First) Upon application of input voltage, the output energizes and the T1, ON time begins. At the end of the ON time, the output de-energizes and the T2 OFF time begins. At the end of the OFF time, the output energizes and the cycle repeats as long as input voltage is applied. Reset: Removing input voltage resets the output and time delays, and returns the sequence to the ON time. Operation (Recycling Flasher - OFF Time First) Upon application of input voltage, the T2 OFF time begins. At the end of the OFF time, the T1 ON time begins and the load energizes. At the end of the ON time the load de-energizes, and the cycle repeats until input voltage is removed. Reset: Removing input voltage resets the output and time delays and the sequence to the OFF time. Features & Benefits FEATURES BENEFITS Microcontroller based Repeat Accuracy + / - 0.5%, + / -5% time delay accuracy Compact, low cost design Allows flexiblility for OEM applications 1A Steady solid-state output, 10A inrush Provides 100 million operations in typical conditions. T otally solid state and encapsulated No moving parts to arc and wear out over time and encapsulated to protect against shock, vibration, and humidity Accessories P1004-95, P1004-95-X Versa-Pot Panel mountable, industrial potentiometer recommended for remote time delay adjustment. P1023-6 Mounting bracket The 90° orientation of mounting slots makes installation/removal of modules quick and easy. P0700-7 Versa-Knob Designed for 0.25 in (6.35 mm) shaft of Versa-Pot. Semi-gloss industrial black finish. Wiring Diagram L1 N/L2 V = Voltage L = Load RT is used when external adjustment is ordered.
Ordering Information
VOLTAGE ADJUSTMENT TIME DELAY OPERATING SEQUENCE KSD3120A 12VDC External 0.1 - 10s ON time first KSD3310.1SA 24VDC Fixed 0.1s ON time first KSD3415MA 120VAC Fixed 5m ON time first KSD3432A 120VAC Onboard 10 - 1000s ON time first If you don’t find the part you need, call us for a custom product 800-843-8848
© 2016 Littelfuse Protection Relays & Controls Time Delay Relays Dedicated - Recycle www.littelfuse.com/ksd3 Rev: 1-A-062116 Accessories P1015-64 (AWG 14/16) Female Quick Connect These 0.25 in. (6.35 mm) female terminals are constructed with an insulator barrel to provide strain relief. P1015-18 Quick Connect to Screw Adapter Screw adapter terminal designed for use with all modules with 0.25 in. (6.35 mm) male quick connect terminals. C103PM (AL) DIN Rail 35 mm aluminum DIN rail available in a 36 in. (91 .4 cm) length. P1023-20 DIN Rail Adapter Allows module to be mounted on a 35 mm DIN type rail with two #10 screws. External Resistance vs. Time Delay This chart applies to externally adjustable part numbers. The time delay is adjustable over the time delay range selected by varying the resistance across the RT terminals; as the resistance increases the tie delay increases. When selecting an external RT, add the tolerances of the timer and the RT for the full time range adjustment. Examples: 1 to 50 S adjustable time delay, select time delay range 1 and a 50 K ohn RT. For 1 to 100 S use a 100 K ohm RT. KSD3 SERIES Specifications Time Delay Range 0.1s - 1000m in 6 adjustable ranges or fixed Repeat Accuracy ±0.5% or 20ms, whichever is greater Tolerance ( Factory Calibration) ≤ ± 5% Reset Time ≤ 150ms Time Delay vs. Temperature & Voltage ≤ ±10% Input Voltage 24 or 120VAC; 12 or 24VDC Tolerance ±20% AC Line Frequency 50/60 Hz Power Consumption AC ≤ 2VA; DC ≤ 1W Output Type Solid state Maximum Load Current 1A steady state, 10A inrush at 60°C OFF State Leakage Current AC ≅ 5mA @ 230VAC; DC ≅ 1mA Voltage Drop AC ≅ 2.5V @ 1A; DC ≅ 1V @ 1A DC Operation Negative switching only Protection Circuitry Encapsulated Dielectric Breakdown ≥ 2000V RMS terminals to mounting surface Insulation Resistance ≥ 100 MΩ Polarity DC units are reverse polarity protected Mechanical Mounting Surface mount with one #10 (M5 x 0.8) screw Dimensions H 50.8 mm (2”); W 50.8 mm (2”); D 30.7 mm (1.21”) Termination 0.25 in. (6.35 mm) male quick connect terminals Environmental Operating/Storage Temperature -40° to 60°C / -40° to 85°C Humidity 95% relative, non-condensing Weight ≅ 2.4 oz (68 g) Function Diagrams FLASHER (ON FIRST) ON time plus OFF time equals one complete flash. FLASHER (OFF FIRST) V = Voltage L = Load T1 = ON Time T2 = OFF Time T1 ≅ T2 R = Reset