机械安装
‑30‑
brake may be closed again. The voltage drop on the cable should be considered for
long‑distance brake cables. The approximate calculation of voltage drop Δ U of a
copper cable is as follows:
Δ U [V] = 0.042 Ω · mm
2
/m (L/q) ∙ I
brake
Where: L = cable length (m), q = cross‑sectional area of brake cable conductor (mm
2
), I
brake
= Brake DC current (A)
The close time and open time of the brake vary with the discharge circuit. Ensure that
the operation delay time is obtained from the actual device.
Avoid starting the motor repeatedly for a short time when the brake is still connected.
Therefore, the switching time of the brake and the switching time of the relay should
be considered in the drive control circuit or the enabling circuit.
For applications where the gravity shaft or mechanical parts may drop, you must take
protection measures, for example, using an anti‑drop mechanism with dual safety
structure.
Note
● When the motor with a brake is accelerating, stopping or running at low speed, the
rotating disc of the brake will produce a slight friction sound, which is not a fault
or abnormality.
● Because the brake backlash will occur when the brake is not electrified, there will
be a tiny return clearance in the rotating direction of the motor shaft, which is
normal.
Mechanical connection
Install and remove transmission units, such as couplings, gears and pulleys, only
using appropriate tools.
● Use the threaded hole on the shaft extension;
● Heat the transmission unit when necessary;
● Use a washer to protect the shaft extension center during disassembly;
● The motor with a keyway has been tested for half‑key balance before delivery. If
necessary, you can perform full balancing for the motor with transmission units.
Coupling
● Use a dedicated flexible coupling. It is recommended to use a double leaf spring
coupling that allow a certain eccentric angle.
● To prevent malfunction, use a coupling with a proper size.
● Although the centering of the coupling varies with the rotating speed and the type
of the coupling, ensure that the coaxiality of the load at both ends of the coupling
is < 0.03 mm.
Belt connection
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