5
Safety Considerations
Safety Manual
MN042004EN March 2017 www.eaton.com
Direct Operation Mode
Description
Direct Motor starter is the default profile. The Direct Motor
starter profile will use the motor1 parameters for all control/
protections.
C445 outputs:
•
Output 1 is dedicated by this application mode for controlling
and protecting the motor.
•
Outputs 2 and 3 are general purpose outputs
Output 1 controls and protects the contactor/motor. It will close
when a valid RUN command is received by the C445, provided
a fault or inhibit is not active and will open on a STOP command
or if a trip occurs. A C445 Trip condition will cause the Output
contact to open.
Outputs 2 and 3 are user configurable outputs and their func-
tion can be selected by the user.
Reverser Operation Mode
Description
The Reverser starter profile will use the motor1 parameters for
all control/protections.
C445 outputs:
•
Output 1 is configured as the FWD relay output
•
Output 2 is configured as the REV relay output
•
Output 3 is general purpose
Output 1 controls the FORWARD contactor. Output 1 will close
when a valid FWD(RUN1) command is received and there is no
active fault or inhibit.
It will open on a STOP command or if a trip occurs.
Output 2 controls the REVERSE contactor. Output 2 will close
anytime a valid REV(RUN2) command is received and there is
no active fault or inhibit. It will open on a STOP command or if
a trip occurs.
A C445 trip will cause Outputs 1 and 2 to open effectively drop-
ping out the reverser.
Output 3 is a user configurable output whose function can be
changed by the user.
Start/Delta Operation Mode
Description
The Star/Delta starter control provides the logic to control a
Star/Delta connected motor.
C445 outputs:
•
Q1 output – star/delta motor starter LINE coil (NO)
•
Q2 output – star/delta motor starter DELTA coil (NO)
•
Q3 output – star/delta motor starter STAR coil (NO)
A STOP command deactivates all contactor controls effectively
dropping out the motor.
A START command activates the STAR contactor control
then activates the LINE contactor control after the Network
Contactor Delay expires initiating a start in the STAR winding
configuration.
Switching to Delta: The control will switch to delta when
the control detects the motor is up to speed or when the
Maximum Star Winding Time expires. The STAR contactor con-
trol will first be deactivated. The DELTA contactor control will
then be activated after the net delay time expires and current
readings = 0.
The control will set MOTOR1 as the active motor parameters
when starting in the star configuration and will set MOTOR2 as
the active motor parameters when running in the delta configu-
ration.
Two Speed Two Winding
Description
The two speed motor starter operation mode accepts off/ slow/
fast commands to control two speed motor applications. A run
slow command will activate Output 1(slow). A run fast com-
mand will activate Output 2(fast). A stop command de-activates
both of the outputs.
When transitioning from fast -> slow, the C445 will de-activate
Output 2(fast) and will delay activating Output 1(slow) until the
Control Switching Time expires, allowing the motor time to slow
down before transitioning to the slow speed.
