Vascat MAC R 080.070, Инструкция по эксплуатации и техническому обслуживанию

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INSTRUCTIONS AND MAINTENANCE MANUAL
MAC R MOTORS
PAGE: 30
CODE: CTT12 EDITION: 01 DATE: MAY 2013
Subject to technical changes without prior notice
Blind hollow shaft encoders are used with an anti-turn strap system on the stator, mounted to the motor shaft
using a ring clamp.
When specifically requested by the customer, other types of encoders and/or servo sensors can be fitted. Please
check with VASCAT for each specific case.
3.8.2 Parking brake
MAC R series motors can be fitted, as an option, with an electromagnetic parking brake to immobilise the motor
load safely and in a way that is 100% external to the operation of the motor itself.
On certain occasions, this is necessary for safety reasons, e.g. when it is necessary to block the movement of the
machine to work on the interior safely or when there is a fault in the converter power supply or other mechanical
devices of the installation.
PRECAUTION
The use of the parking brake as a dynamic working brake, e.g. to slow down a load, is not allowed, since it
speeds up the premature wear and tear of the lining.
In general, the brakes are powered at 24 VDC (please check the technical datasheet of each motor), working via
the activation of coils on springs. This type of brake works according to the lack of voltage operating principle, i.e.
when there is no voltage applied, the brake blocks the rotation and when voltage is applied, it is unblocked.
PRECAUTION
If the appropriate voltage is not applied to the brake, it will not work correctly. In the case of insufficient voltage, it
will overheat due to friction, causing rapid wear and tear of the lining. If the voltage is too high, the windings may
be damaged by surge currents.
PRECAUTION
The brake power circuit must be completely independent.
Make sure that the brake is not activated before the motor rotates and that it remains connected to voltage when
the motor is rotating. If, for any reason, the power supply to the brake continues when the motor is stopped, the
brake will not work and, as the shaft would be free, undesired movements may occur.
The correct use of the brake is the user's responsibility and that of the manufacturer of the electrical control
cabinet.
The specifications of the standard brake for each type of motor are specified on the corresponding technical data
sheet, which can be consulted on VASCAT's website:
http://www.vascat.es .
NB
The friction surfaces must always be kept free from oil and grease, since minimum quantities of such substances
can largely reduce the brake torque.