Chapter 7—Monitoring and Diagnostics
142
Power Xpert C445 Global Motor Management Relay
MN042003EN—January 2019
www.eaton.com
Table 55. Power-Based Monitoring
Parameter Name
Range/Units
Description
Watts Total
Depends on frame size (watts)
Total real power. 5% accuracy.
VA Total
Depends on frame size (Volt-Amps)
Total apparent power. 5% accuracy.
VARS Total
Depends on frame size (Vars)
Total reactive power. 5% accuracy.
Power factor
0–100%, Scaled by 0.01% via fieldbus
Apparent power factor in percentage. 1% accuracy.
Speed RPM
Depends on motor (0.1 RPM)
Motor speed in RPM
Torque
Depends on motor (0.01 Nm)
Motor torque
Efficiency percent
PC tool in %, scaled by 0.01% via fieldbus Motor efficiency in percentage
Real energy
Depends on frame size (0.1 kWh)
Real energy scaled. 5% accuracy.
Real energy (resettable)
Depends on frame size (0.1 kWh)
Real energy (resettable) scaled. 5% accuracy.
Apparent energy
Depends on frame size (0.1 kVAh)
Apparent energy scaled. 5% accuracy.
Apparent energy (resettable)
Depends on frame size (0.1 kVAh)
Apparent energy (resettable) scaled. 5% accuracy.
Reactive energy
Depends on frame size (0.1 kVARh)
Reactive energy scaled. 5% accuracy.
Reactive energy (resettable)
Depends on frame size (0.1 kVARh)
Reactive energy (resettable) scaled. 5% accuracy.
Current demand value
Depends on frame size (watts)
Latest estimate of the demand. 5% accuracy.
Demand (resettable)
Depends on frame size (watts)
Peak demand, user resettable. 5% accuracy
Peak demand time stamp
Time in seconds
Peak demand time stamp (in Unix time)
Demand window duration
Time in minutes
Demand window duration
Table 56. System Monitoring
Parameter Name
Range/Units
Description
Motor state (current based)
0: stopped;
1: accelerating;
2: running
Current based motor state (independent of command)
Motor control status
See table below
Present motor control status bits
Number of operating seconds
Time in seconds
Number of operating seconds
Operating seconds (resettable)
Time in seconds
Number of operating seconds (resettable)
Time to trip overload
Time in seconds
Time for overload to reach trip threshold (100%)
Time to reset overload
Time in seconds
Time for overload to reach reset threshold (thermal memory must drop below 75%)
PTC status
See table below
PTC status
Digital input status
0/1
ON/OFF status of digital inputs.
Base Control Module relay status 0/1
Base Control Module relay status (output status)
Total motor run time
Time in seconds
Total motor run time in seconds
Total motor run time (resettable)
Time in seconds
Total run time user (resettable)
Last measured starting time
Time in seconds
The amount of time the motor took to reach up to speed on the last start.
Number of starts
Number
Total number of motor starts
Number of starts (resettable)
Number
Number of starts (resettable)
Number of contactor operations
last hour
Number
Number of contactor operations during the last hour
Latest run time
Time in seconds
Duration in seconds of the last start-to-stop motor run time
Thermal capacity
0–250%
Thermal capacity in percent—overload trip occurs at 100%.