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5–37
‘Current’ Sub-menu of ‘Advanced’ Menu (continued)
Overload Level (‘Current’ sub-menu of ‘Advanced’ menu)
Range: 0.5 to 1.25 x I
e
Default: 1.0938 x I
e
Scaling: n/a Type: R/W
The ‘Start of Overload Level’ parameter holds the level in Amps at which an ‘Overload’ trip will
start integrating.
• Refer to “Overload Explanation Diagram”.
«•» This parameter is not available in Bypass Operation unless a user-supplied external current
transformer is installed. (Refer to P18/B2, ‘Auto Bypass’.)
Overload Delay (‘Current’ sub-menu of ‘Advanced’ menu)
Range: 10 to 140 Default: 140 Scaling: n/a Type: R/W
The ‘Overload Delay’ parameter holds an arbitrary dimensionless number which slows down the
integration of an ‘Overload’ trip. The larger the value of the number stored here, the longer a
given ‘Overload’ will take to result in a trip.
• Refer to “Overload Explanation Diagram”.
Overload Explanation Diagram
(P-34)
Special case: If a load current exceeding 7.2 x FLC occurs for longer than 60 ms,
a ‘Shearpin Trip’ is forced whenever the ‘Overload’ is ‘On’ (see section 5.4.12).
(P-35)
Notes
1. Delay = ‘Overload Delay’.
0.01
0.1
1
10
100
1000
Fault Current ( Motor Current x N )
Seconds
to Trip
Overload Start Point
Delay = 80
Delay = 30
Delay = 10
Delay = 140 (Default)
7.2 x FLC Shearpin Cutoff
1 2 3 4 5 6 7 8 9 10
Chapter 5: Keypad Menu Items and Parameters
SR44 Series Soft Starter User Manual
1st Ed, Rev B 07/31/2019