K2CM-Q2MA Datasheet, PDF (4/16 Pages) Omron Electronics LLC – Solid-state Relay Enables Choice of Three Operating Functions (Overcurrent, Openphase, and Reverse-phase)

Connections
K2CM
■ Voltage Reverse-phase Detection Models
Terminal Arrangement
Manual Operation Low-voltage Circuit (High-
capacity Motor)
200 VAC
50/60Hz
RST
Ta Tc Tb U V W
Output contacts Control power
(SPDT)
supply
• Perform the external connections by referring to the examples given below.
• Obtain the control power supply from the same phase as the power supply to
the magnet contactor coil.
• Connect the phase advancing capacitors closer to the power supply than the
current transformer, as shown in the examples.
• Tighten the terminal screws to a torque of 0.98 N·m max. (The appropriate
tightening torque is 0.49 to 0.67 N·m.)
• Use of insulated solderless terminals is recommended for connection to the
Relay terminals (M3.5).
Note: 1. In principle, the K2CM must be surface mounted with the terminal
block facing downward.
2. Use M5 screws with spring washers and flat washers for mounting.
Tighten the screws to a torque of 1.77 N·m max. (The appropriate
tightening torque is 1.08 to 1.57 N·m.)
Manual Operation Low-voltage Circuit
200 VAC
50/60Hz
RST
Magnet
contactor
Stop
Start
Phase advancing
capacitor
Current converter for
measuring device @/5A
Alarm
buzzer ^BZ
M
Motor
RST
U VW
ABC
123
Ta Tc Tb U V W
Motor protective relay
Automatic Operation Low-voltage Circuit
200 VAC
50/60Hz
RST
Magnet
contactor
Stop
Start
Phase
advancing
capacitor
RST
U VW
ABC
123
M
Motor
BZ
Alarm
buzzer
Ta Tc Tb U V W
Motor protective relay
Manual Operating Low-voltage Circuit (
Start)
200 VAC
50/60Hz
RST
Magnet
contactor
Stop
Start
Phase
advancing
capacitor
RST
U VW
ABC
123
changeover
Alarm _BZ
buzzer
Ta Tc Tb U V W
Motor protective relay
M
Magnet
contactor
Automatic
contact
Phase advancing
capacitor
RST
U VW
ABC
123
M
Motor
BZ
Alarm
buzzer
Ta Tc Tb U V W
Motor protective relay
Manual Operation High-voltage Circuit
3, 300 VAC
50/60Hz
RST
Transformer @/200V
High-voltage
magnet contactor
High-tension
fuse
X/a
Stop
Start
Phase advancing
capacitor
Current converter for
measuring device @/5A
X ^Auxiliary
relay
BZ
Alarm
buzzer
RST
M
U VW
ABC
123
High-voltage
motor
Ta Tc Tb U V W
Motor protective relay
Note: Connect the phase advancing capacitor on the power supply
side of the Motor Protective Relay as shown in the above dia-
grams.
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