Automationdirect.com Stellar SR44, User Manual

Page: 138 / 238

Chapter 5: Keypad Menu Items and Parameters
5.4.11 – ‘Parameters’ Menu (continued)
Protection 2
Range: 0 to 192 Default: 192 Scaling: 1 Type: R/W
‘Protection Mode 2’ – Use with 2nd parameter set.
‘Protection Mode 2’ controls which trips are available; for use with second parameter set:
• 64 = FULL = full protection with full volts after top of ramp; optimizing function turned off
• 192 = FULL+OPTIMIZE = full prot optimize
• 128 = START+BYPASS = protection during start; then bypass
• 0 = PHASE LOSS ONLY = I/p phase loss detection only
Start and Optimize mode is forced to ‘FULL’ Protection Mode when ‘Delta’ Firing Mode is selected
(P-6 = 1). In ‘PHASE LOSS ONLY’ Protection Mode (P-78 = 0), the bottom 12.5% of starter current
is ignored after TOR (Top Of Ramp).
(P-7 ‘Protection Mode’ is the 1st parameter set counterpart of P-78 ‘Protection Mode 2’.)
Start Ped 2
Range: 10 to 60 percent Default: 50% Scaling: 1 Type: R/W
‘Start Pedestal 2’ – Use with 2nd parameter set.
‘Start Pedestal 2’ sets the percentage of the unit’s rated supply voltage that is applied to the load
before the ramp starts.
(P-11 ‘Start Ped’ is the 1st parameter set counterpart of P-79 ‘Start Ped 2’.)
Start Time 2
Range: 1 to 255 seconds Default: 5s Scaling: 1 Type: R/W
‘Soft Start Time 2’ – Use with 2nd parameter set.
‘Soft Start Time 2’ sets the soft-start time period over which the unit ramps voltage to the motor.
• Start times are normally in the 5–30s range.
• Long ramp times over 1minute are for special applications only.
• The start (without current limit) is purely a voltage ramp.
• Lightly loaded motors will normally reach full speed before the end of a long ramp.
(P-12 ‘Start Time’ is the 1st parameter set counterpart of P-80 ‘Start Time 2’.)
Kick Ped 2
Range: 60 to 90 percent Default: 75% Scaling: 1 Type: R/W
‘Kick Pedestal 2’ – Use with 2nd parameter set.
‘Kick Pedestal 2’ provides a short kick of voltage at start of ramp to dislodge sticky load.
(P-13 ‘Kick Pedestal’ is the 1st parameter set counterpart of P-81 ‘Kick Pedestal 2’.)
P-78 through P-96 define the 2nd parameter set, which can be used to define a different Start/Stop profile.
See appendix A.2.1 (Using An Alternative Parameter Group) for more information.
P-78
P-79
P-80
P-81
SR44 Series Soft Starter User Manual
1st Ed, Rev B 07/31/2019
5–64