About VIS
VIS is a product of COEL, specialized manufacturer of brake motors  located in Italy.
Since 1976 COEL designed and munufactured brake motors making all the components including the
brake units in its facilities (see www.coelmotori.it for further details).
Thanks to this large experience, on 2005 we invented VIS, the modular ATEX brake system.
Our idea was based on the market demand of a easy solution to make a brake motor without modifica-
tion of the motors or extension of the certificates.
With 29 years of experience in manufacturing brakes, we defined a new oversized standard, able to
guarantee a range of modular brakes designed for heavy duty.
More than 35 controls made in the production process make each VIS brake as a master piece.
All the components are tested 100%, all the working parameters controlled with functional tests made
on each brake.
The VIS brakes range is in continuous development in order to make the quality and performance
better and better.
For hoisting, travelling, positioning in Hazardous location the VIS brakes are the safe and reliable
solution.

What’s VIS?
The VIS Atex brake is an innovative modular flameproof  spring applied disc brake unit.
The new concept is to apply an independent  brake unit to a standard B5 or different flanged explosion
proof motor or to a transmission unit. The VIS brake is certified as  independent component. It means
that there are not coupling procedures in order to define the certification.

Why VIS?
The VIS brake is available in  B5 flange face to face version (IEC 63 to 280 ) or, on request, can be
made with NEMA or special flanges coupling. The mounting is very  fast.
It is also possible to mount the VIS brake on the back side of an EX motor. This is done by making the
motor construction with double flange and shaft execution and using the shaft of the VIS brake for the
fan application and the flange for fixing the fan cover.
Choosing the VIS brake, it’s very easy to make an explosion proof brake motor, reducing costs and
delivery time.
The performance of VIS brakes is particularly high and the strong structure makes them suitable for
very heavy duty and for every kind of application (hoisting, travelling, positioning...).
VIS brakes don’t need periodical maintenance such as adjustment of gap on work site.
The braking torque values are included between 5 to 1200 Nm  (depending on frames)  and the elec-
tromagnets fitted inside the VIS brakes can be AC three phase or DC.
The cost of a standard explosion proof motor plus the VIS brake is considerably lower than an
explosion proof brake motor and the delivery time and reliability  are much better.

Main Characteristics
-PATENT pending design and concept system
-Three phase AC (frame 80 to 160) or single phase DC electromagnets (frame 63 to 280)
-Totally closed
-IP66
-Power supply VAC24 to 690 50-60Hz  three phase or VDC 24 to 300.
-F class insulation
-Thermally protected with dual metal protectors as standard
- Large terminal box with terminal board and fitted in rectifier (for DC only)
-Very high resistance structure
-Designed for S1 duty  without ventilation

Standards
The VIS series brakes are designed following the ATEX Directive ATEX 94/9/CE-ATEX 95,Group II,
2GD category, in compliance with the norms norme EN 60079-0:2006, EN  60079-1:2004, EN  61241-
0:2006 and EN 61241-0:2004.
VIS brakes are certified with certificate INERIS 06 ATEX 0047 with addition 01 and 02
All brakes Atex are available in the following versions:
Category:  2 G / 2D /2GD
Type of protection: Ex d / Ex tD A21
Enclosure group: II B / II C
Temperature class: T3 / T4 / T5
Maximum surface temperature: T200°C / T135°C / T100°C
Protection mode:  IP66
Ambient temperature -20 or -50°C / +55°C.

Options
- Hand release
- Ready for hand release kit
- PTC thermistors
- Anti condensation heaters
- Switch on brake opening or on hand release
- Special flange coupling

Ordering a VIS brake
For ordering a VIS brake it’s necessary to supply the following information:
1) CE type certification
2) Input and output flange / shafts dimensions
3) If AC or DC
4) Voltage needed
5) Brake torque requested
All the brakes are available in different voltages and brake torque values
Please see the performance data in order to correctly identify  the brake