Chapter 5—System Configuration and Operation
78
Power Xpert C445 Global Motor Management Relay
MN042003EN—January 2019
www.eaton.com
Control Settings
The following parameters are used to configure the Star/
Delta Operation Mode and the C445 sources of control.
Table 14. Star/Delta Configuration Parameters
Note
1
Soft reset (power cycle) required for changes to these parameters to take effect.
Fieldbus Control Word
The star/delta motor starter profile will accept the following
control commands over a fieldbus network.
Control Bits
Bit 0
0 = Stop command, de-activate all control outputs
1 = Run1 command, begin start sequence
Bit 2
This bit can be used to switch between Local and
Remote from the network when the Allow Remote
Control Switch parameter is enabled.
Bit 3
0 = No action
1= Reset fault (will clear fault provided condition
has cleared)
Bit 5
0 = No action
1= The C445 will issue a “Test Trip” fault causing
the Outputs 1-3 control relays to open
Control Status Word
The control status word of the direct motor starter profile can
be accessed over the fieldbus network.
Status Bits
Bit 0
0 = Stopped (No active Run1 command)
1= Running1 (Run1 command is present)
Bit 2
0 = local control source active
1= remote control source is active
Bit 3
0 = no fault present
1= C445 fault present
Bit 4
0 = no warning present
1= C445 warning present
Bit 5
0 = no inhibit present
1= C445 control inhibit present
Bit 6
0 = C445 not ready (fault and/or inhibit present)
1= C445 ready for control (No fault or inhibit present)
Bit 7
0 = motor is not up to speed (AtRef)
1= C445 has detected motor is up to speed on
delta winding (AtRef)
Two conditions will set the AtRef bit, signaling the motor is
up to speed.
●
After transitioning to the delta winding, if motor current
increases above 115% of the active overload FLA rating
and then decreases back below 115% of the active
overload FLA rating, it is determined the motor has come
up to speed and the AtRef bit will be set.
●
After transitioning to the delta winding, if motor current
exceeds 30% of the active overload FLA rating and
remains until after the start delay time expires the motor is
determined to be up to speed and the AtRef bit will be set.
Configuration Parameter
Modbus Register Description
Read/Write
Active Operation Mode
1
700
This parameter selects the Operation Mode
R/W
Control Fault Delay
701
Delay time before a control fault is issued. A setting of “0” disables this protection.
R/W
Network Contactor Settle Time
704
Settle delay time before 2
nd
contactor is activated – ensures the first contactor is
sealed in before applying the line
R/W
Maximum Star Winding Time
705
Maximum time the control will stay on the star winding before transitioning to the
delta winding in 100ms
R/W
Motor#1 Overload FLA Scaled
900
This parameter is to set the overload full load amp rating when on the star winding
R/W
Motor#2 Overload FLA Scaled
901
This parameter is to set the overload full load amp rating when on the delta winding R/W
Motor Overload Trip FLA
500
This parameter contains the active motor overload FLA
(will contain the motor1 setting when on the star winding and the motor2 setting
when on the delta winding)
R
Trip Enable Bit Field
1000-1001
Trip (Fault) protection enable bits
Set bits to enable desired motor protections
R/W
Warn Enable Bit Field
1002-1003
Warning protection enable bits
Set bits to enable desired motor protections warnings
R/W
C445 Local Source Selector
1
711
Select the Local Control source.
R/W
C445 Remote Source Selector
712
Select the Remote Control source.
R/W
