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K2CU

Heater Element Burnout Detector

K2CU

Accurate Detection of Heater Element Burnout Regardless of Heater Capacities

Item list of K2CU

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last update: September 24, 2012

Ratings

Item K2CU-F K2CU-P
Control supply voltage 100, 110, 200, 220 VAC 100/200, 110/220 VAC
Rated frequency 50/60 Hz
Carry current 1.25 times as large as each model's maximum operating current 2.5 A for K2CU-P0.5A-A/-B;
5A
Operating voltage range 85% to 110% of control supply voltage
Voltage fluctuation compensation
range 		85% to 110% of control supply voltage 85% to 110% of control supply voltage
(applicable only on models with voltage fluctuation compensation)
Operating current 4 to 10 A, 8 to 20 A, 16 to 40 A, 32 to 80 A (continuously variable) 0.25 to 0.5 A, 0.5 to 1 A, 1 to 2 A, 2 to 4 A (continuously variable)
Releasing current 105% max. of operating current 110% max. of operating current
Operate time 0.5 s max. (when current changes from 150% to 0%)
Gate input voltage range
(for models with gate input terminals) 		5 to 30 VDC ---
Control output 2 A at 220 VAC, SPDT (cosΦ = 0.4)
Power consumption Input: 0.5 VA max.
Power supply: 5 VA max.		 Input: 1 VA max.
Power supply: 4 VA max.

Characteristics

Setting accuracy ±7% max.
Repeat accuracy ±3% max.
Influence of temperature ±10% max. (at 20°C±30°C)
Influence of voltage Models without voltage fluctuation compensation:
±3% max. of the value measured at the control supply voltage, on condition that the voltage fluctuation is 85% to 110% of the control supply voltage

Models with voltage fluctuation compensation:
±5% max. of the logical value, on condition that the voltage fluctuation is 85% to 110% of the control supply voltage.
(see note)
Influence of frequency ±3% max. (at ±5% of rated frequency)
Insulation resistance 10 MΩ min. (at 500 VDC) between electric circuits and mounting panel
Dielectric strength 2,000 VAC, 50/60 Hz for 1 min between electric circuits and mounting panel
Overcurrent 20 times of max. set value of operating current for 2 s
Vibration resistance Destruction: 16.7 Hz, 1-mm double amplitude for 10 min each in X, Y, and Z directions
Shock resistance Destruction: 98 m/s2 (approx. 10G)
Ambient temperature Operating: -10°C to 55°C (with no icing)
Ambient humidity Operating: 45% to 85%
Weight K2CU-F: approx. 390 g; K2CU-P: approx. 300 g

Note: The logical value is an operating value within a range of 0.85 to 1.1 with a voltage fluctuation of 85% to 110%, based
          on the value at the control supply voltage measured as 1.

last update: September 24, 2012

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