K2CU-F80A-C AC32-80A AC100 Omron, K2CU-F80A-C AC32-80A AC100 Datasheet - Page 3

• Manufacturer Part Number: K2CU-F80A-C AC32-80A AC100
• Description: Detector Switches Heater Fault Detector
• Manufacturer: Omron

Specifications of K2CU-F80A-C AC32-80A AC100

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

K2CU
Operation
K2CU-F
When power is supplied to the heater (when the SSR is ON), a cur-
rent flows through the wires to the heater elements. At the same
time, a voltage is imposed on the gate circuit and the
K2CU-FjjAjGS begins monitoring the current flowing through
the heater wires.
The current flowing to the heater wires is detected by the detector
sections through each Current Transformer (CT) incorporated by
the K2CU-FjjA-jGS.
The current signals transmitted by the two CTs are sent to the cur-
rent-voltage converters, smoothing circuits, and comparators as
shown in the diagram.
Heater elements
Power source
CT
SSR
2
CT
A- GS Series
1
Note: 1. The dotted lines indicate the line conductors passing through the windows of the current transformers.
Current-
voltage
converter
Current-
voltage
converter
2. The current flowing into the gate circuit (between G+ and G–) is as follows:
3 When using a K2CU which has the model number suffix ”GS” (a model that incorporates gate input
Approximately 1.4 mA at 5 VDC
Approximately 3.4 mA at 12 VDC
Approximately 6.7 mA at 24 VDC
terminals), the control output of the temperature controller must be a voltage output type.
Smoothing
circuit
Smoothing
circuit
G+
Gate
circuit
G–
Comparator
Comparator
The signal generated by the reference voltage generator is sent to
the setting circuit to provide a reference value. The reference value
is sent to the comparators. Each comparator compares its heater
element current input and the reference value. If the input is lower
than the reference value, a signal is sent to the output circuit.
There are two detector sections operating independently. If either of
the input signals from the CTs is lower than the reference value, the
output relay and alarm indicator will be activated.
The K2CU-FjjA-jGS incorporates a voltage fluctuation com-
pensation function which automatically corrects the reference value
if the supply voltage fluctuates.
DC
Setting
circuit
Temperature
controller
Reference
voltage
generator
Output
circuit
To each circuit
Output relay
Power
circuit
Alarm indicator
X
X/c
S1
CM1
S2
b1
a1
K2CU
Buzzer
BZ
3