Rockwell Automation 592- E300 Overload Relay User Manual - Manual (Page 161)

Rockwell Automation Publication 193-UM015B-EN-P - June 2014 161
Protective Trip and Warning Functions Chapter 5
Table 154 - Over kW Trip Level (Parameter 384)
Over kW Warning
The E300 Electronic Overload Relay will indicate an Over kW warning if:
• No warning currently exists
• Over kW Warning is enabled
• Current is present
• Voltage is present
• Over kW Inhibit Time has expired
• The total real power (kW) is equal to or greater than the Over kW
Warning Level
When the Over kW Warning conditions are satisfied, the:
• TRIP/WARN LED will flash a yellow 2-long / 2-short blink pattern
• Bit 1 in Power Warning Status (Parameter 12) will set to 1
• Bit 1 in Device Status 0 (Parameter 20) will set to 1
• Any relay outputs configured as a Warning Alarm will close
Over kW Warn Level
Over kW Warn Level (Parameter 385) allows the user to define the real power
(kW) at which the E300 Electronic Overload Relay will indicate a warning. It is
user-adjustable from 0…2,000,000 kW.
Table 155 - Over kW Warn Level
Default Value 0.000
Minimum Value 0.000
Maximum Value 2000000.000
Parameter Type DINT
Size (Bytes) 4
Scaling Factor 1000
Units kW
IMPORTANT The Over kW Inhibit Time starts after a phase voltage transitions from 0V to
20V L-L and a phase of load current transitions from 0A to 30% of the device’s
minimum FLA setting. The E300 Electronic Overload Relay does not begin
monitoring for an over real power (kW) condition until the Over kW Inhibit
Time expires.
Default Value 0.000
Minimum Value 0.000
Maximum Value 2000000.000
Parameter Type DINT
Size (Bytes) 4
Scaling Factor 1000
Units kW