K2CU-F20A-C AC8-20A AC100 Omron, K2CU-F20A-C AC8-20A AC100 Datasheet - Page 5

• Manufacturer Part Number: K2CU-F20A-C AC8-20A AC100
• Description: HEATER FAULT DETECTOR
• Manufacturer: Omron
• Series: K2CUr

Specifications of K2CU-F20A-C AC8-20A AC100

• Current Rating: 8.0 ~ 20 A
• Mounting Type: Panel
• Operational Type: Large, Built in Transformer
• Voltage - Supply: 100 VAC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Gate Input: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: K2CU-F20A-CAC8-20AAC100; K2CUF20ACAC820AAC100

■ Setting of Operating Current
Use the potentiometer on the front panel to set the operating current.
Rotate the knob to set the desired current value at which the Heater
Burnout Detector should operate. Do not exceed the maximum and
minimum positions.
The K2CU-F’s scale is divided into 12 graduations including sub-
graduations and the K2CU-P’s scale is divided into 5 graduations.
■ Heater Connection and Current
The following table shows the different connections possible. The formula under each illustration indicates the electrical current value of the heater
elements under normal and abnormal conditions.
Note: Values in this table are correct when a 200 VAC, 1 kW heater is used on a single-phase or three-phase current.
Single phase
Three phase Delta network
Phase
Star network
V network
http://www.ia.omron.com/
200 V
200 V
200 V
200 V
200 V
200 V
200 V
200 V
200 V
200 V
Normal condition
(5 A ×
5 A
(5 A ×
(5 A ×
Knob
8.7 A
8.7 A
8.7 A
2.9 A
2.9 A
2.9 A
8.7 A
√
5 A
5 A
3
S
S
HEATER FAULT DETECTOR
ALARM
1
2
= 8.7 A)
K2CU-F40A-C
OMRON Corporation
√
√
3
1 kW
4
1
3
5
)
)
6
1 kW
5 A
1 kW
1 kW
1 kW
1 kW
1 kW
1 kW
7
1 kW
8
MADE IN JAPAN
×
9
10
4
A
The knobs of the K2CU-F and K2CU-P as shown in the illustrations
are set to 32 A and 0.7 A respectively.
The set operating current is defined as the mean value of the heater
current under normal operating conditions and the heater current
under a burnout or abnormal condition.
Set value =
(5 A ×
(5 A ×
7.5 A
7.5 A
2.5 A
2.5 A
2.5 A
2.5 A
(c)Copyright OMRON Corporation 2008 All Rights Reserved.
(5 A ×
√
Red point
(indicates the set value)
√
1
3
3
×
×
√
K2CU-P1A-A
HEATER FAULT DETECTOR
SOURCE
CURRINT 5A/AC/Max.
√
3
2
2
3
1
2
ALARM
)
)
)
Normal current + abnormal current
10
12
100/200 VAC
100/200VAC
×
200 V
14 16
0.5
Abnormal condition
A
18
20
50/60Hz
0 A
2
0 A
8.7 A
5 A
5 A
2.5 A
2.5 A
(5 A ×
(5 A ×
5 A
5 A
(5 A × 1)
√
3
√
×
1
3
×
√
1
3
√
3
2
)
)
K2CU
5