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Chapter 5: Keypad Menu Items and Parameters
5.4.11 – ‘Parameters’ Menu (continued)
AutoConfig 2
Range: 0 to 255 (flags) Default: 6 Scaling: 1 Type: R/W
‘Auto Configuration 2’ – Use with 2nd parameter set.
– Set this parameter by individual bits.
• Bit #:
0: Auto Ramp – gently ramps voltage to starter; acts somewhat like an automatic current limit.
1: Auto 3MC – enable automatic removal of low voltage ramp for high start pedestals.
‘Auto 3MC’ applies only to ‘Start Pedestal’ voltages set above 50% (P-11 or P-79). The SR44
normally does a very brief low-voltage ramp up to the pedestal voltage level before the start ramp
begins, but ‘Auto 3MC’ applies a higher starting torque and eliminates this initial pedestal ramp for
pedestal voltages above 50%.
2: Auto Bypass – enable automatic bypass contactor detection.
‘Auto Bypass’ turns ‘On’ and ‘Off’ the automatic detection of a bypass contactor. When ‘On’, a
bypass contactor will be automatically detected. Soft-starter thyristor trips and thyristor short-circuit
trips will be disabled during Run (after full voltage is reached). Thyristor protection and thyristor
short-circuit protection are still available during the start ramp, and phase-loss protection is
available during both Start and Run.
3: Auto Jog – enable automatic Jog detection; Stop requests within about 0.5 seconds of a Start
request are forced to 0 stop time. Use this feature for short jogging of light loads
(For details & timing chart, refer to subsection “5.4.3 – ‘Auto Features’ Menu.”)
4: Auto Endstop – enable Detect Stalled Motor during soft-stop, and turn off thyristors.
5: Auto Stop – detect variations in PF during stop smooth stall.
6: Auto Endstart – enable detection of full speed during Start, and complete Start ramp.
7: Auto Pedestal – enable approximate detection of motor rotation at Start, and adjust pedestal to suit.
(P-18 ‘Auto Configuration’ is the 1st parameter set counterpart of P-86 ‘Auto Configuration 2’.)
Low I 2
Range: 0 to 0.7813 x I
e
Default: 0.125 x I
e
Scaling: 0.03125 Type: R/W
‘Low Current Level 2’ – Use with 2nd parameter set.
The ‘Low Current Level 2’ parameter, if enabled, sets a level of current under which the unit will
trip. This low current trip level is not active during the starting or stopping phases. The Low
Current Level flag is continually updated even if tripping is disabled.
«•» This parameter is not
available
in Bypass Operation unless a user-supplied external current
transformer is installed. (Refer to P18/B2, ‘Auto Bypass’.)
(P-28 ‘Low Current Level’ is the 1st parameter set counterpart of P-87 ‘Low Current Level 2’.)
P-86
An external user-supplied current transformer is required if any of the current or power related
trip or monitoring features are needed in bypass mode.
(Parameters: 8/B2, 9/B1/B2, 20, 21, 22, 23, 26, 28, 30, 32, 33, 34, 36, 39,
51/B1/B2/B3/B4, 87, 89, 91, 93, 112/B0/B1/B2/B3/B6, 121/B4)
Refer to Electrical Installation Chapter 2, subsections 2.4.1 & 2.5.2 for wiring information.
Auto Bypass detects the presence of a bypass contactor, and should be ON when using one.
Using a bypass contactor with Auto Bypass in the OFF state can cause thyristor faults.
P-87
SR44 Series Soft Starter User Manual
1st Ed, Rev B 07/31/2019
5–66