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 | ||||
Example | Brake Type | Supply voltag | DC brake power pack | |
D.C. | 230 V / 50Hz | Rapid | ||
DC | Direct current brak | A From standard motor power supply | Rapid at braking | Ul / CSA |
AC | Alternating current brake |
| ||
DC S Series | Compact direct current brake | B Other voltages or separate power supply upon request | OPTIONAL | |
positive DC | Positive-action direct current brake | |||
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