Convention 1
If in a special application of a motor more than one device of the same type is mounted, their number must be reported in the designation, for example B2, means motor with no. 2 thermal protector (bimetallic).
Convention 2
When thermal protectors are present on a motor, the brake line includes the letters TP111.
Brake name |
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Example |
Brake Type |
Supply voltag |
DC brake power pack |
|
D.C. |
230 V / 50Hz |
Rapid |
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|
DC |
Direct current brak |
A From standard motor power supply |
Rapid at braking |
Ul / CSA |
|
AC |
Alternating current brake |
|
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|
DC S Series |
Compact direct current brake |
B Other voltages or separate power supply upon request |
OPTIONAL |
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|
positive DC |
Positive-action direct current brake |
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Brake operation times and connections
A) braking delayed by the (electric) motor inertial power
B) braking not delayed by the (electric) motor inertial power
C) A + DC side interrupted (better than in case B) *
D) B + DC side interrupted (better than in case C) *
* (use antispark side DC)
Table for motor selection
Symbols
In = rated current
la = starting current
Cn = rated torque
Ca = starting torque
Cmax = maximum torque
J = inertia moment
CF = braking torque
ωo = starts/hour at no-load
PB = coil power
η = efficiency
