Programming
890CS Common Bus Supply - Frames B & D; 890CD Common Bus Drive and 890SD Standalone Drive - Frames B, C & D Page D-63
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MECH BRAKE
SETUP::MOTOR CONTROL::MECH BRAKE
This block is used to control an electro-mechanical parking (holding) brake fitted to a brake motor.
IMPORTANT Engaging the brake when the motor is turning will increase its wear. This may lead to brake failure.
Parameter Descriptions
ENABLE
PREF: 155.01 Default: FALSE Range: FALSE / TRUE
By default this parameter is set to FALSE which means that the drive's internal brake relay is opened at power-up and remains
open, effectively disabling this block. (The brake would be permanently ON in this condition).
Set this parameter to TRUE to enable the MECH BRAKE block. The state of the brake is then determined by the METHOD
parameter, and also the MANUAL STATE parameter if METHOD is set to MANUAL.
METHOD
PREF: 155.02 Default: 0 Range: See below
Select how to use the electro-mechanical brake:
Enumerated Value : Method
0 : AUTOMATIC Braking is handled automatically by the drive.
1 : MANUAL The user applies/releases the brake. Refer to MANUAL STATE.
T CLOSE
PREF: 155.03 Default: 100 Range: 0 to 1500 ms
When the motor speed reaches zero, the drive waits for time T CLOSE before applying the brake (METHOD = AUTOMATIC).
T OPEN
PREF: 155.04 Default: 100 Range: 0 to 1500 ms
When the motor starts, the drive waits for time T OPEN before releasing the brake (METHOD = AUTOMATIC).
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