Configuration - Drive
9-103
9
iControl DC
• Synthetic armature voltage low-pass frequency: In conjunction with Synthetic Armature
Current Low-pass Frequency, creates a synthetic speed signal independent of the Tach.
Increase to increase armature voltage to the synthetic speed signal.
• Synthetic armature current low-pass frequency: Compensates for loop circuit loss in creat-
ing the synthetic speed signal from the armature current. Increase to increase DC loop
current to the synthetic speed signal.
Over Current
• Armature voltage limit: Determines the armature voltage limit. A value of 100% will allow
rated armature voltage. Lower values limit it according to the set percentage. Refer to your
job prints for SCR voltage and current ratings.) Please refer to “Determine the Armature
Voltage Limit (System 12 SCR Drive)” on page 4-7. Please refer to “Armature Voltage Limit
(System 12 SCR Drive)” on page 2-64.
• Armature current limit: Should not be set above 275%. Determines armature current limit.
Set so that, at full load, the Current Limit LED on the System 12 SCR drive will not light
when the car is accelerating (up) or decelerating (down). Please refer to “Determine the
Armature Current Limit (System 12 SCR Drive)” on page 4-8. Please refer to “Armature
Voltage Limit (System 12 SCR Drive)” on page 2-64.
• Rated loop over-current: Determines the threshold current used for Loop Over Current
Safety monitoring. Should equal full load current of the hoist motor. Please refer to
“Armature Overcurrent Overload Protection Adjustment (System 12 SCR Drive)” on
page 4-48.
• Loop over-current fault time: Determines the amount of time the elevator will be allowed
to run before generating a fault when the machine draws 200% of Rated Loop Over-cur-
rent. Please refer to “Armature Overcurrent Overload Protection Adjustment (System 12
SCR Drive)” on page 4-48.
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