Chapter 5—System Configuration and Operation
82
Power Xpert C445 Global Motor Management Relay
MN042003EN—January 2019
www.eaton.com
Control Settings
The following parameters are used to configure the Two Speed
Two Winding Operation Mode and the C445 sources of control.
Table 15. Two Speed Two Winding Configuration Parameters
Note
1
Soft reset (power cycle) required for changes to these parameters to take effect.
Fieldbus Control Word
The two speed motor starter profile will accept the following
control commands over a fieldbus network.
Control Bits
Bit 0/1 00 = Stop command, de-activate all control outputs
01 = Run Slow command, activate Output 1
10 = Run Fast command, activate Output 2
11 = Unknown command, No action
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 & 2 control relays to open.
Control Status Word
The control status word of the two speed motor starter
profile can be accessed over the fieldbus network.
Status Bits
Bit 0/1 00 = Stopped (No active Run commands)
01 = Running1 (Run Slow command is active)
10 = Running2 (Run Fast command is active)
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 (AtRef)
Two conditions will set the AtRef bit, signaling the motor is
up to speed.
●
If motor current first exceeds 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.
●
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. Setting of “0” disables protection.
R/W
Control Switch Time Delay
703
Time delay when transitioning from fast
R
slow. Delay to allow motor to slow before
transitioning to the slow output
R/W
Motor#1 Overload FLA Scaled
900
Parameter to set overload full load amps for slow motor winding
R/W
Motor#2 Overload FLA Scaled
901
Parameter to set overload full load amps for fast motor winding
R/W
Motor Overload Trip FLA
500
Parameter holds active motor overload fla rating
(will contain the motor1 setting when on the slow winding and the motor2 setting
when on the fast 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
C445 Q3 Output function select
1
717
Output 3 user function selection
R/W
