Elektrim Brake, Инструкции по установке, эксплуатации и обслуживанию

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along with malfunctioning in brake operation through lowering of releasing parameters and in
consequence the possibility of jamming of the brake. Hence, after the brake attains the air gap of
maximum value (a max. according to Table 1) due to wear of the brake disk (11) - the air gap should
be immediately adjusted. The admissible wear of the brake disk friction linings amounts to a few
millimeters - which enables adjustment of the air gap several times.
TABLE 1
OPERATING ENVIRONMENT AND INSTALLATION
The brakes are adapted for operation in temperate climate with ambient temperature -40°C to
+45°C. Special brake versions are envisaged for operation in marine and tropical climates. Operation
of the brakes under other environmental conditions require agreement of the manufacturer.
Operation in horizontal or vertical position has been foreseen; operation of the brake in vertical
position is encumbered with only insignificant residual torque.
The electromagnet winding of the brake is designed for operation in Class F insulation. Supply
occurs from a direct current source or through an appropriate rectifier from an alternating current
source. The brake can be connected into the motor supply circuit according to the applications
below.
When a direct current brake is to be connected to an alternating current source, rectifier circuits are
utilized. The connected electromagnet circuit coil can be connected on the direct or alternating
current side.
SWITCHING OFF ON ALTERNATING CURRENT SIDE
Switching off the magnetic field voltage, causes the
coil current to be still flowing through the rectifier
diodes and drops slowly. The magnetic field reduces
gradually causing
extension of brake actuation time
and simultaneously delayed rise in braking torque .
If actuating times are of no consequence because of
simply connecting up and control of the brake, the
brake should be connected on the alliterating current
side.
SWITCHING OFF ON DIRECT CURRENT SIDE
Coil current is broken between the coil and the
supply (rectifying) circuit. The magnetic field reduces
very rapidly, short time of brake actuation and
consequently rapid growth of braking torque . While
switching off on DC voltage side, a high peak voltage
forms in the coil causing faster wear of contacts due to
sparking. For protecting the coil against peak voltages
and for protecting the contacts against excessive wear,
the rectifying circuits are provided with protective
measures enabling actuation of the brake on the
direct current side. The electromagnetic winding of
the brake is adapted for continuous operation as well
Parameter HPS 06 HPS 08 HPS 10 HPS 12 HPS 14 HPS 16 HPS 18 HPS 20 HPS 25
“a” nom. 0.20 0.20 0.20 0.30 0.30 0.30 0.30 0.30 0.40
“a” max. 0.50 0.50 0.50 0.70 0.80 1.00 1.20 1.20 1.40
4 Elektrim Brake Service Manual