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Owner's Manual
Drivecon Toll Free Ph: 1-800-374-8266
Drivecon reserves the right to alter or amend the above information without notice
Mechanical brake control
The brake is controlled so that during starting the motor first generates torque and after that the
brake is opened. The same applies for stopping; while the brake is being closed, the motor still
generates torque. During a direction change, the brake is kept open all the time. XT Drive
decelerates the motor to a stop according to the set deceleration time when the run command is
switched off, so the brake is used only as a holding brake. This way brake wear is minimized. Only
if a failure occurs or the emergency stop button is pushed, the brake closes immediately stopping
the motor and the load.
The motors of CXT-hoists and SM-trolleys have an electromechanical disk brake. The disk brake is
opened and kept open during run by DC-voltage. When there is no voltage present the brake is
closed and also kept closed by spring force.
2-phase AC
- 002-045F
XT Scalar models 002F-045F include an AC-supply from two phases for
the disk brake control. XT Drive controls this line and it is protected by
an adjustable circuit breaker (max.4.0A). A rectifier included in the motor
rectifies the AC-voltage to DC-voltage brake coils.
REC12
- 002-011F
XT Vector models 002F-011F have a built-in REC12 brake control unit,
which is a line voltage half-wave rectifier (max.1.25Adc). The half-wave
type rectifier reduces losses and is enough to open the brake. There is a
contactor to switch the line voltage on and off. An external control unit is
needed to control other brake types.
ESD141
- 015-110F
XT Vector models 015F-132F have a built-in ESD141 brake control unit,
which is a line voltage full/half-wave rectifier (max.1.25Adc). Full-wave
rectification is used to open the brake quickly. Then, the rectifier
changes to a half-wave type, which reduces losses, but is enough to
keep the brake open. There is a contactor to switch the line voltage on
and off. The same contactor also disconnects the DC-voltage directly
from the brake coil, which guarantees that the brake closes fast. An
external control unit is needed to control other brake types.
3-phase AC
- 055-110F
- 055-110F
XT Drive models 055F-132F include a 3-phase AC-supply for the brake
control. XT Drive controls this line and it is protected by an adjustable
circuit breaker (max.4.0A). When a shoe brake is used, brake closing is
speeded up by capacitors. They are connected in parallel with the brake
via the brake contactor NC-contacts. The connection is partially ready in
XT Drive. Only the capacitors must be added outside XT Drive. This
connection can also be used to control 2-phase disk brakes or a
separate KA372B brake control unit.
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