K2CM-Q2MA Datasheet, PDF (5/16 Pages) Omron Electronics LLC – Solid-state Relay Enables Choice of Three Operating Functions (Overcurrent, Openphase, and Reverse-phase)

■ Current Reverse-phase Detection Models
K2CM
Terminal Arrangement
Manual Operation Low-voltage Circuit (High-
capacity Motor)
200 VAC
50/60Hz
RST
a1 c1 b2 C2 S1 S2
Output contacts Control power
(NO and NC)
supply
• Perform the external connections by referring to the examples given below.
• 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
a1 c1 b2 c2 s1 s2
Motor protective relay
Automatic Operation Low-voltage Circuit
200 VAC
50/60Hz
RST
Magnet
contactor
Stop
Start
Magnet
contactor
Automatic
contact
Phase
advancing
capacitor
RST
U VW
ABC
123
M
Motor
BZ
Alarm
buzzer
a1 c1 b2 c2 s1 s2
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
a1 c1 b2 c2 s1 s2
Motor protective relay
M
Note: Connect the phase advancing capacitor on the power supply
side of the Motor Protective Relay as shown in the above
diagrams.
Phase advancing
capacitor
RST
U VW
ABC
123
M
Motor
BZ
Alarm
buzzer
a1 c1 b2 c2 s1 s2
Motor protective relay
Manual Operation High-voltage Circuit
3,300 VAC
50/60Hz
RST
Transformer @/100V
High-voltage
magnet contactor
High-tension
fuse
X/a
Stop
Start
Phase advancing
capacitor
Current converter for
measuring device @/5A
RST
M
U VW
ABC
High-voltage ^{1 2 3}
motor
Auxiliary
relay
X
BZ
Alarm
buzzer
a1 c1 b2 c2 s1 s2
Motor protective relay
5