Time Delay Relays Dedicated - Single Shot KRDS SERIES Single Shot Description The KRDS Series is a compact time delay relay measuring only 2 in. (50.8 mm) square. Its microcontroller timing circuit provides excellent repeat accuracy and stability. Encapsulation protects against shock, vibration, and humidity. The KRDS Series is a cost effective approach for OEM applications that require small size, isolation, reliability, and long life. Operation (Single Shot) Input voltage must be applied before and during timing. Upon momentary or maintained closure of the initiate switch, the output relay energizes for a measured interval of time. At the end of the delay, the output de-energizes. Opening or reclosing the initiate switch during timing has no affect on the time delay. The output will energize if the initiate switch is closed when input voltage is applied. Reset: Reset occurs when the time delay is complete and the initiate switch is opened. Loss of input voltage resets the time delay and output. Wiring Diagram Features & Benefits L1 N/L2 V = Voltage FEATURES BENEFITS S1 = Initiate Switch C = Common, Transfer Contact Compact, low cost design measuring 2 in. Allows flexiblility for OEM applications NO = Normally Open (50.8mm) square NC = Normally Closed UTL = Untimed Load Repeat Accuracy + / -0.5%, Microcontroller based Factory calibration + / - 5% R is used when external T Isolated, 10A, SPDT Allows control of loads for AC or DC voltages adjustment is ordered. output contacts A knob is supplied for adjustable Encapsulated To protect against shock, vibration, and humidity units. The untimed load is optional. Relay contacts are isolated. 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 Ordering Information installation/removal of modules quick and easy. MODEL INPUT VOLTAGE ADJUSTMENT TIME DELAY P0700-7 Versa-Knob KRDS1135M 12VDC Fixed 35m Designed for 0.25 in (6.35 mm) shaft of Versa-Pot. Semi-gloss industrial black finish. KRDS120 12VDC Onboard 0.1 - 10s KRDS221 24VAC/DC Onboard 1 - 100s P1015-64 (AWG 14/16) Female Quick Connect KRDS420 120VAC Onboard 0.1 - 10s These 0.25 in. (6.35 mm) female terminals are KRDS421 120VAC Onboard 1 - 100s constructed with an insulator barrel to provide KRDS424 120VAC Onboard 1 - 100m strain relief. KRDS430 120VAC External 0.1 - 10s P1015-18 Quick Connect to Screw Adapter If desired part number is not listed, please call us to see if it is technically possible to build. Screw adapter terminal designed for use with all modules with 0.25 in. (6.35 mm) male quick connect terminals. 2016 Littelfuse Protection Relays & Controls Rev: 1-A-062216 www.littelfuse.com/krdsTime Delay Relays Dedicated - Single Shot KRDS SERIES Accessories Specifications Time Delay C103PM (AL) DIN Rail Type Microcontroller with watchdog circuitry 35 mm aluminum DIN rail available in a 36 in. Range 0.1s - 1000m in 6 adjustable ranges or fixed (91.4 cm) length. Repeat Accuracy 0.5% or 20ms, whichever is greater Tolerance P1023-20 DIN Rail Adapter (Factory Calibration) 5% Allows module to be mounted on a 35 mm DIN Reset Time 150ms type rail with two 10 screws. Initiate Time 40ms Time Delay vs Temp. & Voltage 5% External Resistance vs. Time Delay Input Voltage 12, 24 or 110VDC 24, 120 or 230VAC Tolerance 12VDC & 24VDC/AC -15% - 20% 110VDC, 120VAC or 230VAC -20%- 10% AC Line Frequency /DC Ripple 50/60 Hz / 10% Power Consumption AC 2VA DC 2W Output Type Isolated relay contacts Form SPDT Rating (at 40C) 10A resistive 125VAC 5A resistive 230VAC & 28VDC 1/4 hp 125VAC 7 5 Life (Operations) Mechanical - 1 x 10 Electrical - 1 x 10 Protection Circuitry Encapsulated Isolation Voltage 1500V RMS input to output Insulation Resistance 100 M Polarity DC units are reverse polarity protected This chart applies to externally adjustable part numbers. Mechanical The time delay is adjustable over the time delay range selected by varying Mounting Surface mount with one 10 (M5 x 0.8) screw the resistance across the R terminals as the resistance increases the tie T delay increases. Dimensions H 50.8 mm (2.0) W 50.8 mm (2.0) When selecting an external R , add the tolerances of the timer and the R T T D 30.7 mm (1.21) for the full time range adjustment. Termination 0.25 in. (6.35 mm) male quick connect terminals Examples: 1 to 50 S adjustable time delay, select time delay range 1 and a 50 K ohn R . For 1 to 100 S use a 100 K ohm R . T T Environmental Operating/Storage Temperature -40 to 60C/-40 to 85C Output Current/Ambient Temperature Humidity 95% relative, non-condensing Weight 2.6 oz (74 g) Function Diagram SINGLE SHOT (PULSE FORMER) V = Voltage S1 = Initiate Switch NO = Normally Open Contact NC = Normally Closed Contact TD = Time Delay R = Reset 2016 Littelfuse Protection Relays & Controls Rev: 1-A-062216 www.littelfuse.com/krds