Heater Element Burnout Detector
K2CU
CSM_K2CU_DS_E_3_2
Accurate Detection of Heater Element
Burnout Regardless of Heater Capacities
Accurately detects a burned heater element or elements incor-
porated by a molding machine or packing machine and outputs
an alarm signal.
Precisely singles out the burned element even if one heater el-
ement among several heater elements has been burned out.
Applicable to small- to large-capacity heater elements.
All K2CU-F large-capacity, built-in current transformer models
work with both single-phase and three-phase heaters.
Voltage fluctuation compensation function eliminates false
alarms due to variations in the supply voltage.
Model Number Structure
Model Number Legend
K2CU-@@@-@@
12 3 4 5 6
1. Heater Element Burnout Detector 4. Voltage Compensation
2. Operation None: Not provided
F: Large-capacity, built-in Current Transformer model A: Provided
P: Small-capacity plug-in model 5. Control Power Supply Voltage
3. Operating Current Range A: 100/200 VAC
0.5: 0.25 to 0.5 A B: 110/220 VAC
1: 0.5 to 1 A C: 100 VAC
2: 1 to 2 A D: 110 VAC
4: 2 to 4 A E: 200 VAC
10: 4 to 10 A F: 220 VAC
20: 8 to 20 A 6. Gate Input
40: 16 to 40 A None: Not provided
80: 32 to 80 A GS: Provided
Ordering Information
K2CU-F@@A-@GS Model with Gate Input Terminals
Control supply voltage Operating current
4 to 10 A 8 to 20 A 16 to 40 A 32 to 80 A
100 VAC With voltage fluctuation compensation K2CU-F10A-CGS K2CU-F20A-CGS K2CU-F40A-CGS K2CU-F80A-CGS
110 VAC K2CU-F10A-DGS K2CU-F20A-DGS K2CU-F40A-DGS K2CU-F80A-DGS
200 VAC K2CU-F10A-EGS K2CU-F20A-EGS K2CU-F40A-EGS K2CU-F80A-EGS
220 VAC K2CU-F10A-FGS K2CU-F20A-FGS K2CU-F40A-FGS K2CU-F80A-FGS
Note: A model with a gate input terminal is required to combine the K2CU with a temperature controller that uses PID control for temperature control of a heater. To do
so, use a temperature controller with a voltage output.
1K2CU
K2CU-F Large-capacity, Built-in Current Transformer Models
Control supply voltage Operating current
4 to 10 A 8 to 20 A 16 to 40 A 32 to 80 A
100 VAC With voltage fluctuation compensation K2CU-F10A-C K2CU-F20A-C K2CU-F40A-C K2CU-F80A-C
110 VAC K2CU-F10A-D K2CU-F20A-D K2CU-F40A-D K2CU-F80A-D
200 VAC K2CU-F10A-E K2CU-F20A-E K2CU-F40A-E K2CU-F80A-E
220 VAC K2CU-F10A-F K2CU-F20A-F K2CU-F40A-F K2CU-F80A-F
K2CU-P Small-capacity, Plug-in Models
Control supply voltage Operating current
0.25 to 0.5 A 0.5 to 1 A 1 to 2 A 2 to 4 A
100/ With voltage fluctuation compensation K2CU-P0.5A-A K2CU-P1A-A K2CU-P2A-A K2CU-P4A-A
200 VAC
Without voltage fluctuation compensation --- K2CU-P1-A K2CU-P2-A K2CU-P4-A
110/ With voltage fluctuation compensation K2CU-P0.5A-B K2CU-P1A-B K2CU-P2A-B K2CU-P4A-B
220 VAC
Without voltage fluctuation compensation --- K2CU-P1-B K2CU-P2-B K2CU-P4-B
Specifications
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 models maximum operating cur- 2.5 A for K2CU-P0.5A-A/-B;
rent 5 A
Operating voltage range 85% to 110% of control supply voltage
Voltage fluctuation compensation 85% to 110% of control supply voltage 85% to 110% of control supply voltage (applicable only on
range models with voltage fluctuation compensation)
Operating current 4 to 10 A, 8 to 20 A, 16 to 40 A, 32 to 80 A (continuously vari- 0.25 to 0.5 A, 0.5 to 1 A, 1 to 2 A, 2 to 4 A (continuously vari-
able) able)
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 5 to 30 VDC ---
with gate input terminals)
Control output 2 A at 220 VAC, SPDT (cos = 0.4)
Power consumption Input: 0.5 VA max. Input: 1 VA max.
Power supply: 5 VA max. Power supply: 4 VA max.
Characteristics
Setting accuracy 7% max.
Repeat accuracy 3% max.
Influence of temperature 10% max. (at 20C30C)
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 M 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
2
Shock resistance
Destruction: 98 m/s (approx. 10G)
Ambient temperature Operating: 10C to 55C (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.
2