98 ACS 160 User’s Manual
Group 54: Braking (Electromechanical Brake Control)
The versatile braking features of the ACS 160 include capability to control electromechanical brake.
Electromechanical brake can be controlled by using programmable relay outputs of the ACS 160.
The brake is applied when the motor is in stop (the relay output is de-energised).
Electromechanical brake control is enabled by first setting parameter 1401
RELAY OUTPUT 1 (or 1402
RELAY OUTPUT 2) to value 32 (MEC BR CNTRL). Parameters 5401 MBRK OPEN DLY and 5403 MBRK FREQ
LVL are used to adjust the operation of the mechanical brake. Refer to Figure 28.
Note! Observe the relay output ratings as given in Reference Section K. When necessary, use an
additional contactor to supply the brake coil.
Code Description
5401 MBRK OPEN DLY
Release delay for external brake. This delay specifies the time which passes from the brake open command
to the moment when the brake is mechanically open.
Note! Value of this parameter should be slightly longer than the actual time it takes for the external brake to
release. Too large of a value may lead to overcurrent tripping as the motor shaft can not rotate due to
operation of the brake.
5403 MBRK FREQ LVL
The level of output frequency below which the external brake is applied. This frequency level should be low
enough that the speed of the motor is reduced almost to zero during the closing delay of the external brake.
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