Dings Dynamics Group 60 Series Hazardous Location User Manual

60 Series Hazardous

Brake Instructions

DESCRIPTION

The 60 Series Brake is a direct acting, electro magnetically released, spring set unit that utilizes rotating and stationary
disc contact to supply positive braking action and quick release and setting capabilities at all times. Brakes which are
not provided with a floor mounting bracket are intended to be mounted as an integral part of electric motors listed for
corresponding hazardous locations where the acceptability of the combinations has been determined by Underwriter’s
Laboratories, Inc. The explosion-proof assembly is completed by assembly of the brakes to the motors.

READ THIS BULLETIN CAREFULLY BEFORE INSTALLING OR OPERATING THE
60 SERIES BRAKE. FAILURE TO COMPLY WITH THESE INSTRUCTIONS CANCELS
ALL WARRANTIES SINCE THE SAFETY OF THE UNIT MAY BE ENDANGERED BY
IMPROPER INSTALLATION OR OPERATING PROCEDURES.

Bulletin No. BK4614 (1/00)

4740 WEST ELECTRIC AVENUE MILWAUKEE, WI 53219  PHONE [phone]  FAX [phone]  www. dingsco.com

MOTOR MOUNTED* FOOT MOUNTED

ENCLOSURE ENCLOSURE

SUFFIX SUFFIX

MODEL

CAST MODEL CAST

NO. IRON ALUMINUM NO. IRON ALUMINUM
8-61001 -66B -67B F8-61001 -66B -67B
8-61003 -66B -67B F8-61003 -66B -67B
8-62006 -66B -67B F8-62006 -66B -67B
8-63010 -66B -67B F8-63010 -66B -67B
8-63015 -66B -67B F8-63015 -66B -67B

*If a hazardous location brake is purchased by other than an
authorized electric motor manufacturer, a Foot Mounted brake
must be purchased to obtain the UL label.

CAUTION

DO NOT OPERATE MANUAL RELEASE
OR ENERGIZE BRAKE COIL BEFORE
INSTALLATION IN ORDER TO PRESERVE
PRE-ALIGNMENT OF ROTATING DISCS
FOR EASE OF INSTALLATION.

USE ONLY HUB FURNISHED BY DINGS
SPECIFICALLY FOR USE IN HAZARDOUS
LOCATION BRAKES. DO NOT OPERATE
BRAKES IN EXPLOSIVE ATMOSPHERE
WITH COVER OR COVER BOLTS
REMOVED.

MANUAL RELEASE (See Figure 7)

To manually release brake, rotate release knob (41)
clockwise until it strikes stop-pin (39). Brake will remain
released until release knob is rotated counterclockwise, or
until power is restored, automatically resetting the brake.

THERMAL RELEASE

If the brake overheats, the thermal release mechanism
will release spring pressure on the friction discs, releasing
brake. To reset thermal release, allow brake to cool, then
rotate release knob (41) counterclockwise until it strikes
the stop-pin. Check brake operation as overheating may
indicate a broken lead wire or burned out coil.

The thermal release mechanism has been calibrated at the
factory and the setting of the bimetal element and control
rod MUST NOT BE DISTURBED. If the mechanism
does not function properly, the complete operator assembly
(44) must be returned to the factory for adjustment and
calibration.

Figure 1

WARNINGS

A. Read this bulletin carefully before installing or operating the brakes. Failure to comply

with the installation or operating instructions cancels all warranties and may cause
injury to personnel and damage to property.

B. DESCRIPTION

The 60 and 70 Series brake for hazardous location is a direct acting, electromagnetically
released, spring set brake that utilizes rotating and stationary disc contact to supply
positive braking action. Brakes can be mounted independently of any other equipment
by using a U.L. listed foot mounting bracket, or mounted in a location approved by U.L.
to an electric motor listed for corresponding hazardous locations. The brakes are
equipped with a thermal overload mechanism that will prevent the external surfaces of
the unit to reach or exceed the lowest temperature for the Classes and Groups for which
the brakes are listed.

C. OPERATING INFORMATION

When the external surface of the brake approaches the specified temperature limit, the
thermal overload mechanism will automatically release the brake and hold it in the
released position. The thermal overload mechanism prevents the surface temperature of
the brake from rising to a level that could ignite the surrounding gases or dusts by
releasing the brake and therefore, stopping a further increase in temperature. Once the
brake has been released by the thermal overload mechanism, control over the rotation of
the motor and movement of the load is lost. This uncontrolled rotation of the motor and
movement of the load could cause injury to personnel and damage to property.

The brake is also equipped with a thermal switch. When properly wired into the motor
starting circuit, the thermal switch shuts down the motor before the thermal overload
mechanism releases the brake. When the thermal switch activates, it stops the motor and
load, preventing the uncontrolled motion described above.

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The thermal overload mechanism can be reset manually after a cooling off period. Before
resetting, the cause for actuating the thermal overload mechanism should be removed.

To minimize the possibility of overheating the brake to a point where the thermal overload
mechanism will be actuated, the performance of the brake has to be matched to the requirements
of the application.

When selecting the brake model, consideration has to be given to brake torque, thermal
capacity, electrical power supply, housing material and any unusual conditions.

BRAKE TORQUE
As a general rule, brake torque is matched to the full load motor torque (brake and motor shaft
at the same speed). Depending on the type of application, the torque sometimes is increased by
a safety factor of 1.5 to 2. If factors such as stopping time, travel distance during stopping and
others, are important, the exact torque requirement has to be calculated, using the inertia and
speed of all moving parts.

THERMAL CAPACITY
Thermal capacity describes the capacity of the brake to perform the maximum number of
stops without excessive heat buildup that will actuate the thermal overload mechanism or
damage internal brake parts. The maximum number of stops depends on the rating of the brake,
inertia to be stopped and speed from which stops are made. To calculate the thermal capacity
requirements of the application, inertia and speed of all moving parts and the number of stops
of one full operating cycle must be known.

ELECTRICAL POWER SUPPLY
The coil of the electromagnet, which supplies the releasing force under normal operating
conditions, will operate properly with a tolerance of plus or minus 10% of rated voltage. A volt­age higher than 110% will shorten the life of the coil considerably due to the higher temper­ature generated inside the coil. A voltage of less than 90% may prevent the armature from mov­ing towards the magnet frame. If this occurs, the coil will burn out within months.

HOUSING MATERIAL
The 60 Series H.L. brake is available with an aluminum or cast iron housing. The selection
depends on the environment. Certain vapors or liquids prevent the use of the lighter aluminum
housing.

UNUSUAL CONDITIONS

Please consult Dings Home Office, if ambient temperature is above 40oC (104oF), brake shaft
speed is over 3600 RPM, or any other unusual conditions exist.

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List of Dings Brake Models
Listed by Underwriter’s Laboratories, Inc.
For Hazardous Locations, Class I, Group C and D

Class II, Group E, F and G
Temperature Code - T3C

Thermal

Capacity

Torque HP
Model No.* Ft. Lbs. Sec./Min.
8-61001-xx 1.5 7
8-61003-xx 3 7
8-62006-xx 6 8
8-63010-xx 10 9
8-63015-xx 15 9

For Direct Mounting to
Motor “C” Face.
NEMA Motor Frame Sizes
56C, 66C, 143TC, 145TC

Thermal

Capacity

Torque HP
Model No.* Ft. Lbs. Sec./Min.
A8-61001-xx 1.5 7
A8-61003-xx 3 7
A8-62006-xx 6 8
A8-63010-xx 10 9
A8-63015-xx 15 9

For Adapter Mounting to
Motor “C” Face.
NEMA Motor Frame Sizes
182TC, 184TC, 213TC,
215TC, 245TC, 256TC

Thermal

Capacity

Torque HP
Model No.* Ft. Lbs. Sec./Min.
F8-61001-xx 1.5 7
F8-61003-xx 3 7
F8-62006-xx 6 8
F8-63010-xx 10 9
F8-63015-xx 15 9

For Foot Mounting

* Complete Model Number by Adding

Suffix -66B for Cast Iron Housing
Suffix -67B for Aluminum

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