ABB GTO 1300V880A AC800M series board card

Description

This parameter is used to limit the torque for the scalar control DARA 1000 and 1010. The parameter is

overriding the torque set point for DARA 1001. The most used range is 200 .. 400 %. For two-contactor

hoists and travels the value 250% can be used, and for three-contactor hoists the value 200% can be used

without deeper investigations.

Parameter 11.01 must be changed to a lower value when upgrading systems from software AST10_04 or

earlier. The value for 11.01 for 10_04A and newer must be reduced acc. to following formula:

Value 11.01 (10_04A or later) = Value 11.01 (10_04)

 ∗ Value 11.10 / 1,732

The normal current limit is overrun by the Delayed travel motion braking and the soft impact control for

back-lash impact reduction when leaving Open Control. See parameters 11.28, 11.45 and 11.46

This parameter 11.03 is determining the gain of the current controller. Normally it is not needed to change

from the Normal value. For travel motions the system response can be faster with higher proportional gain of

the speed controller (09.03) and reduced current gain (11.03)

A lower value than 10,000 will result in a softer action, a higher value in an aggressive action.

This parameter 11.10 rescales the motion control system to handle different dynamic properties. The dynam

ics are limited both by the mechanism itself and the type of feedback. By experience has follow setting been

found very successful:

• Good mechanics + tachometer allows 1,00
• Average mechanics + tachometer or good mechanics + rotor feedback allows 1,15
• Average/bad mechanics + rotor feedback or Bad mechanics + tachometer allows 1,30

Parameters 11.45 and 11.46, introduced in 10_52 offer, increased functions to handle systems with limited

mechanic properties. The normal value settings are in most cases suitable without being modified.

In case a motion without any contactor is used, mostly a travel, at least one use-contactor parameter 12.25,

12.26 or 12. 27 must be set to 1, although no contactor is used.

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