Operation Check - Omron K2CU Manual

K2CU

Operation Check

K2CU-F A- GS
The operation of the heater burnout detector can be easily checked
as follows:
In a Single-phase Circuit
Set the operating current to be 0.6 to 0.55 times the heater current.
Close the SW with switch SW
2
indicator remains off.
Turn off SW and confirm that the alarm indicator comes on, and that
1
the output relay operates.
SSR
G+
G–
S1
S2
SW
1
Heater
In a Three-phase, Delta Network
Set the operating current to be 0.6 times the heater current.
Close the SW with switches SW
3
the alarm indicator remains off.
Turn off SW and confirm that the alarm indicator comes on, and that
2
the output relay operates.
Turn on SW set the operating current to be 0.9 times the heater cur-
1
rent, and confirm that the alarm indicator goes off and the output
relay releases.
Turn off SW and confirm that the alarm indicator comes on, and that
1
the output relay operates.
SSR
G+
G–
S1
S2
K2CU-F
SW
6
turned on. Confirm that the alarm
1
SW
2
K2CU-F
and SW turned on. Confirm that
1 2
SW
3
SW
1
Heater
2
In a Three-phase, Star Network
Set the operating current to be 0.9 times the heater current.
Close the SW with switch SW
2
indicator remains off.
Turn off SW and confirm that the alarm indicator comes on, and that
1
the output relay operates.
SSR
G+
G–
S1
S2
SW
1
Heater
K2CU
turned on. Confirm that the alarm
1
SW
2
K2CU-F