Latching Relay MKK CSM MKK DS E 2 1 Latching Relays Designed for Memory and Signaling Circuits Low changes in characteristics such as contact tracking and contact pressure for high durable. Excellent resistance to vibration and shock. Built-in operation indicators for simple operation verification. Same external shape with the MK Power Relays. Refer to the Common Relay Precautions. Ordering Information List of Models Encased Models and Models with Plug-in Terminals Number of poles 2 poles Number of poles 2 poles Classification Model Rated voltage (V) Classification Model Rated voltage (V) Standard models MK2KP 6, 12, 24, 48, 100, or 110 VDC 6, 12, 24, 50, 100/(110), or Standard models MK2KP 200/(220) VAC Ratings and Specifications Ratings Characteristics Contact resis- Operating Coil 50 m max. *1 tance Power 30 ms max. (when rated operating power Time Item Set coil Reset coil consumption (W, is applied, not including contact bounce.) Set Reset Maximum Set VA) Minimum voltage voltage voltage 60 ms Rated Resis- Rated Resis- pulse width (V) (V) (V) Rated voltage current tance current tance Set coil Reset coil 30 ms max. (when rated operating power (V) Re- Time (mA) () (mA) () is applied, not including contact bounce.) set 6 286 4.8 29.0 78 Minimum pulse width 60 ms 12 128 25 14.4 325 Maximum Mechanical 1,800 operations/hr Approx. Approx. 24 66 105 10.8 965 operating AC 110% 1.5 0.1 Rated load 1,800 operations/hr 50 31 440 3.2 8,450 frequency to 2 to 0.7 100/(110) 17.8 1,670 3.6 13,350 100 M min. for 500 VDC applied to the Insulation resis- same location as for dielectric strength 200/(220) 9.8 6,200 3.2 27,350 tance 80% max. 80% max. measurement 6 390 13 92.5 64 Between coil and 12 205 52 50 240 Approx. Approx. contacts 24 110 210 22.8 1,050 2,000 VAC at 50/60 Hz for 1 min. DC 110% 2.3 0.5 Between contacts 48 48.5 990 23.4 2,050 to 2.7 to 1.2 of different polarity Dielectric 100 24 4,160 10.3 9,740 strength Between contacts 110 26.4 4,160 11.3 9,740 of the same polarity 1,000 VAC at 50/60 Hz for 1 min. Note: 1. The rated current for AC is the value measured with a DC ammeter in 60 Hz half-wave rectification. Between set/reset The 100/(110) and 200/(220) VAC rated voltages are the values at 100 and 200 VAC. coils 2. The rated current and coil resistance are measured at a coil temperature of 23C with tolerances of +15%/20% 10 to 55 to 10 Hz, 0.75-mm single for the AC rated current and 15% for the DC coil resistance. Vibra- Destruction 3. The AC coil resistance is a reference value only. amplitude (1.5-mm double amplitude) tion re- 4. Operating characteristics were measured at a coil temperature of 23C. 10 to 55 to 10 Hz, 0.5-mm single sistance 5. The maximum allowable voltage is the maximum value of the allowable voltage fluctuation range for the Relay coil Malfunction amplitude (1.0-mm double amplitude) operating power supply and was measured at an ambient temperature of 23C. 2 Shock Destruction 500 m/s There is no continuous allowance. 6. The initial reverse voltage of the built-in diode is 1,000 V. resis- 2 Malfunction 100m/s The initial reverse voltage of the built-in diode in some models is 2,000 V. (MK2KPD) tance 5,000,000 operations min. (operating Mechanical Contact Ratings Endur- frequency: 1,800 operations/hr) ance 500,000 operations min. (rated load, *2 Inductive load (cos = 0.4, L/R = Electrical Item Load Resistive load switching frequency: 1,800 operations/h) 7 ms) Failure rate P value 10 mA at 1 VDC Contact structure Single *3 (reference value ) Contact materials Ag Weight Approx. 85 g Rated load 5 A at 220 VAC, 3 A at 24 VDC 2 A at 220 VAC, 2.5 A at 24 VDC Note: The above values are initial values. *1. Measurement conditions: 1 A at 5 VDC using the Rated carry current 5 A voltage drop method Maximum contact voltage 250 VAC, 250 VDC *2. Ambient temperature condition: 23C *3. This value was measured at a switching frequency of 60 Maximum contact current 5 A operations per minute. Maximum switching capacity 1,100 VA, 72 W 440 VA, 60W (reference value) Ambient operating 10 to 40C (with no icing or temperature condensation) Ambient operating 5% to 85% humidity 1MKK Engineering Data Maximum Switching Capacity Endurance Curve Malfunctioning Shock MK2KP 24 VDC 10 1.000 AC resistive load 500 5 Y Set 220 VAC resistive load Reset DC resistive load 24 VDC resistive load 100 Z AC inductive load X (cos = 0.4) 580 1 50 150 230 320 120 24 VDC inductive load DC inductive load 0.5 (L/R = 7 ms) (L/R = 7 ms) 220 VAC inductive load 230 10 (cos = 0.4) 320 490 5 350 Z 490 X 0.1 2 490 Unit: m/s 1 5 10 50 100 500 1.000 01234567 8 910 Y Contact voltage (V) Contact current (A) Ambient Temperature and the Set and Reset Voltages Measurement: Measurement: Shock was applied 3 times each in 6 MK2KP 100/(110) VAC MK2KP 24 VDC directions along 3 axes with the Relay set and reset to 100 100 Number of Relays: 5 Set voltage Number of Relays: 5 Set voltage check the shock values that Reset voltage Reset voltage cause the Relay to 80 malfunction. 80 2 Criteria: 100m/s 60 60 40 40 20 20 0 0 40 20 0 20 40 60 80 40 20 0 20 40 60 80 Ambient temperature (C) Ambient temperature (C) Ambient Temperature vs. Coil Temperature Rise MK2KP 100/(110) VAC MK2KP 24 VDC 100 100 Number of Relays: 5 80 80 60 60 40 40 20 20 0 0 40 20 0 20 40 60 80 40 20 0 20 40 60 80 Ambient temperature (C) Ambient temperature (C) Changes in Operation Characteristics Due to External Magnetic Fields Degradation in Latching Ability Over Time MK2KP 100 VAC (Average Value) MK2KP 200 VAC N=20 N=5 Measurement: The rate of deterioration in latching ability Measurement: The percentage of change in the operating was measured over time with the Relay left at a normal and release voltages in a uniform external magnetic field temperature (20 to 30C) after latching by applying the were measured (worst magnetic field direction). rated voltage. N S SN +80 100 +60 +40 +20 max 70 50 50 70 min -20 50 -40 -60 -80 Set voltage Reset voltage 50100 300 5001,000 3,000 5,000 10,000 0 Uniform magnetic field strength (0e) Elapsed time (h) 2 Coil temperature rise (C) Set/reset voltage (%) Contact current (A) Percentage change (%) 4 Latching deterioration over time (%) Number of operations (10 operations) Coil temperature rise (C) Set/reset voltage (%)