Delay On Break (Release) KRDB Digi-Timer Time Delay Relay Description The KRDB 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 KRDB Series is a cost effective approach for OEM applications that require small size, isolation, reliability, and long life. Operation Compact Time Delay Relay Microcontroller Circuitry, +/-0.5% Repeat Accuracy Isolated 10 A SPDT Output Contacts Onboard or External Adjustment or Fixed Time Delay Delays from 100 ms ... 1000 m in 6 Ranges Input Voltages from 12... 120 V in 4 Ranges +/-5% Factory Calibration Function Input voltage must be applied before and during timing. Upon closure of the initiate switch, the output relay energizes. The time delay begins when the initiate switch is opened. The output remains energized during timing. At the end of the time delay, the output de-energizes. The output will energize if the initiate switch is closed when input voltage is applied. Reset: Reclosing the initiate switch during timing resets the time delay. Loss of input voltage resets the time delay and output. Delay On Break V = Voltage S1 = Initiate Switch R = Reset NO = Normally Open NC = Normally Closed TD = Time Delay = Undefined time Connection Approvals: Accessories B A External adjust potentiometer P/Ns: P1004-95 (fig A) P1004-95-X (fig B) Versa-knob P/N: P0700-7 Quick connect to screw adaptor P/N: P1015-18 DIN rail P/Ns: 017322005 (Steel) C103PM (Al) A knob is supplied for adjustable units. The untimed load is optional. Relay contacts are isolated. Dashed lines are internal connections. Or dering T able Ordering Table KRDB Series X Input 1 - 12 V DC -1 2 - 24 V AC/DC -2 4 - 120 V AC -4 5 - 110 V DC -5 X Adjustment 1 - Fixed -1 2 - Onboard -2 Adjustment 3 - External -3 Adjustment DIN rail adaptor P/N: P1023-20 See accessory pages for specifications. 5.62 Example P/N: KRDB421 Fixed - KRDB410.5S X Time Delay * 0 - 0.1 ... 10 s -0 1 - 1 ... 100 s -1 2 - 10 ... 1000 s -2 3 - 0.1 ... 10 m -3 4 - 1 ... 100 m -4 5 - 10 ... 1000 m -5 * If Fixed Delay is selected, insert 0.1 ... 1000 S) delay [0.1 1000] followed by (S M ) min. sec. or (M Low Voltage Products & Systems 01.12.05 Female quick connect P/Ns: P1015-64 (AWG 14/16) P1015-13 (AWG 10/12) V = Voltage S1 = Initiate Switch C = Common, Transfer Contact NO = Normally Open NC = Normally Closed UTL = Untimed Load KRDBGen Mounting bracket P/N: P1023-6 Delay On Break (Release) KRDB Digi-Timer Time Delay Relay Technical Data Time Delay Type Range Repeat Accuracy Tolerance (Factory Calibration) Recycle Time Initiate Time Time Delay vs. Temperature & Voltage Input Voltage Tolerance 12 V DC & 24 V DC/AC 110 V DC & 120 V AC Line Frequency/DC Ripple Power Consumption Output Type Form Rating (at 40C) Life Protection Circuitry Isolation Voltage Insulation Resistance Polarity Mechanical Mounting Package Termination Environmental Operating/Storage Temperature Humidity Weight External Resistance vs Time Delay Microcontroller with watchdog circuitry 0.1 s ... 1000 m in 6 adjustable ranges or fixed +/-0.5% or 20 ms, whichever is greater +/-5% 150 ms 40 ms +/-5% 12, 24 or 110 V DC; 24 ... 120 V AC -15% ... +20% -20% ... +10% 50 ... 60 Hz/ 10% AC 2 VA; DC 2 W Output Current/Ambient Temp. Isolated relay contacts Single pole double throw (SPDT) 10 A resistive at 125 V AC 5 A resistive at 28 V DC; 1/4 hp at 125 V AC Mechanical -- 1 x 107; Electrical -- 1 x 105 Encapsulated 1500 V RMS input to output 100 M DC units are reverse polarity protected Surface mount with one #10 (M5 x 0.8) screw 2 x 2 x 1.21 in. (50.8 x 50.8 x 30.7 mm) 0.25 in. (6.35 mm) male quick connect terminals -40C ... +60C/-40C ... +85C 95% relative, non-condensing 2.6 oz (74 g) Mechanical View External Adjust Detail Replaces Knobs if Ordered Inches (Millimeters) KRDBGen 01.12.05 Low Voltage Products & Systems 5.63