User and Maintenance Manual
“E” Failsafe caliper brake
Model E4N-ID
Date: 2013/07/01
Revision: 1
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Dangers caused by a power failure
: A power failure will cause the brake to be applied suddenly. It is
therefore necessary to provide an uninterrupted power supply or, if the case requires, use suitable
power failure warning systems as a brake failure may cause personal injury and damage to property.
Danger of breakage during operation
: To reduce the risk of breakage during operation carry out the
periodic inspections shown in this manual.
Risks connected with changes in operating conditions
: The product is designed for the purposes stated
in this user and maintenance manual therefore the minimum power supply pressure necessary to allow
the brake to open and the maximum pressure required for the brake to work safely and reliably are
indicated. The operating conditions also vary depending on the diameter of the brake disc used; this
manual contains an equation to calculate the dynamic torque provided as a function of the disc
diameter. Please note that an erroneous calculation may result in a braking torque different to the
desired value which could compromise aspects of safety.
Residual risk
: Residual risk can be attributed to the operator not following all the procedures stated in
the user and maintenance manual and not giving due consideration to the warnings.
5.
Technical data
5.1.
Product performance
The failsafe brake is to be used for emergency stops or holding stops.
Use of the product for any purpose other than those indicated may represent a risk to
any aspect of safety.
Warning
:
The value of the friction coefficient is purely theoretical as it depends on environmental
conditions and on how the product is used.
The type “E” failsafe caliper brakes applies a tangential force of 42000 N attributing a coefficient of
friction of 0.4 . The tangential force is obtained with 16 springs, proportionately lower values can be
obtained with 14, 12 or 10 springs
Dynamic torque
The dynamic torque provided by the brake will be a function of the diameter of the disc used for each
single type of product and can be determined using the following equation:
Dynamic torque [Nm] = Tangential force [N] x ( radius of the disc [m] - 0,065 )
