ABB HIEE300888R0001 UAC389AE01 Circuit board module

Description

The release of the brake is delayed a time, parameter 06.06, after the brake should have applied based on

speed condition. During this period, the motion is slightly electrically braked, to damp out any remaining

pendulum from the motion. The level of braking is set by parameter 11.28. Normal value 100% current limit

gives about 30% braking torque.

The delayed brake function is used only for travel movements. If the parameter is set to another value

than 0 for a hoist, it will be ignored by ASTAT and the brake will not be delayed.

The delayed brake function can also be used together with the DC-brake function.

Typical delay time: between 0,1 – 10 seconds, normal 1,0 seconds.

This parameter does not have any meaning for hoist motions.

For different types of movements the below suggested resistor values will give trouble-free performance:

ΣR1 = f(Rmot+Rcable+R1). Could, as example be 8% of R100.

ΣR2 = f(Rmot+Rcable+R1+R2). Could, as example be 18% of R100.

ΣR3 = f(Rmot+Rcable+R1+R2+R3). Could, as example be 38% of R100.

ΣR4 = f(Rmot+Rcable+R1+R2+R3+R4). Could, as example be 65% of R100.

ΣR5 = f(Rmot+Rcable+R1+R2+R3+R4+R5). Could, as example be 100% of R100.

R100 is the resistance with which the motor will produce nominal torque at stand still. See the section ASTAT

SYSTEM DESIGN for more information how the calculation is made.

Rmot varies from 0% in a large “copper-rich” hoist motor for high ambient temperature to 6-7% for a small travel motor.

Rcable is normally around 0,5%, occasionally more than 1%.

The values of the resistance steps R1..R5 shall be entered as their normally expected warm values. The cold values

can be 10% less, the highest designed for resistance values can be 10% higher.

Reference figures:

The reference figures explains how the parameters of Group 12 are related to the main circuit diagram,

and which digital output relay that shall be connected to a certain rotor contactor.

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