BLEMO ER24 Series, Programming Manual

Page: 189 / 344

Configuration Mode (ConF)
191
BRAKE LOGIC CONTROL
Us ed to control an electrom agnetic brake by the drive, for horizontal and vertical hois ting applications, and for
unbalanced m achines.
Principle:
- Vertical hois ting m ovem ent:
Maintain m otor torque in the driving load holding direction during brake opening and clos ing, in order to hold
the load, s tart s m oothly when the brake is releas ed and s top s m oothly when the brake is engaged.
- Horizontal m ovem ent:
Synchronize brake releas e with the build-up of torque during s tartup and brake engage at zero s peed on
s topping, to help to prevent jolting.
Instructions for brake logic control for a vertical hoisting application:
•
[Brake impulse] (bIP) : [Yes] (YES) . Ens ure that the direction of rotation FW corres ponds to lifting the
load.
For applications in which the load being lowered is very different from the load being lifted, s et
bIP =
2 Ibr (for exam ple, as cent always with a load and des cent always without a load).
•
Brake releas e current ( [Brake release I FW] (Ibr) and [Brake release I Rev] (Ird) if [Brake impulse]
(bIP) = 2 Ibr ): Adjus t the brake releas e current to the rated current indicated on the m otor.
During tes ting, adjus t the brake releas e current in order to hold the load s m oothly.
•
Acceleration tim e: For hois ting applications, it is advis able to s et the acceleration ram ps to m ore than 0.5
s econds . Ens ure that the drive does not exceed the current lim it.
The s am e recom mendation applies for deceleration.
Rem inder: For a hois ting m ovem ent, a braking res is tor s hould be us ed.
•
[Brake Release time] (brt) : Set according to the type of brake. It is the tim e required for the m echanical
brake to releas e.
•
[Brake release frequency] (bIr) , in open-loop m ode only: Leave in [Auto] (AUtO) , adjus t if
neces s ary.
•
[Brake engage frequency] (bEn) : Leave in [Auto] (AUtO) , adjus t if neces s ary.
•
[Brake engage time] (bEt) : Set according to the type of brake. It is the tim e required for the m echanical
brake to engage.
Instructions for brake logic control for a horizontal hoisting application:
•
[Brake impulse] (bIP) : No
•
[Brake release I FW] (Ibr) : Set to 0.
•
[Brake Release time] (brt) : Set according to the type of brake. It is the tim e required for the m echanical
brake to releas e.
•
[Brake engage frequency] (bEn) , in open-loop m ode only: Leave in [Auto] (AUtO) , adjus t if
neces s ary.
•
[Brake engage time] (bEt) : Set according to the type of brake. It is the tim e required for the m echanical
brake to engage.
Parameters described in this page can be accessed by:
DRI- > CONF > FULL > FUN- > BLC-
WARNING
UNANTICIPATED EQUIPMENT OPERATION
Verify that the selected settings will not result in the loss of control
of the load being lifted.
Failure to follow these instructions can result in death, serious injury, or equipment damage.