Contactor feeder/RCU
Remote control unit (RCU) is a starter type where
contactors are directly controlled by a special
RCU switch located near the motor. This allows
control of the motor even without the M10x.
Contactor feeder in M10x is designed for
symmetric 3 phase load or single phase load. All
measurement, control and protection features
which are available to NR-DOL/RCU are available
to contactor feeder/RCU load.
Unlike in NR-DOL/RCU control, current feedback is
no longer required in contactor feeder/RCU con-
trol. Contactor feedback is used for motor status
verification and can not be switched off. Feed-
back time is adjustable.
—
Name Pin Description Remarks
Contactor feeder/RCU contactor control
CCLI X4:6 Contactor control voltage input
CCA X4:7 Contactor control A
GR1_C X4:3 Programmable relay output Only for M101
CCC X4:9 Contactor control C Only for M102
DI6(F_Ca) X1:7 Contactor control A feedback
DI5(Loc/R) X1:6 Local/remote control switch input
DI5(Loc/R) X1:6 Local/remote control switch input
* The assigned DI and PIN code may change in actual design
Operating sequence
Control through M10x-
• Starting Sequence: Motor is stopped and ready
to start → START command is received → Internal
contact CCA closed and remain closed for 1s →
Feedback is received
• Stopping Sequence: Motor is running → STOP
command received → internal CCC (M102) or
GR1_C(M101) contact closed and remain closed
for 1s → Feedback received
Control through RCU
When the motor is operated by RCU, M10x is by-
passed still verify the motor state through
feedbacks.
Contactor feedback is used for verifica-
tion of the motor status. Any unexpected
feedback results in alarm or fault.
Contactor feedback is a must parameter
and can not be disabled as M10x also re-
quires contactor feedback to synchro-
nize with external RCU control.
0 4 . MOTOR STARTERS CONTROL 37
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