Installation Notes
4
Prior to Installation
Check that Motor's Full Load Ampere (FLA) is lower than
or equal to Solbrake / SMB Full Load Current (FLC) and
verify that Mains voltage and frequency are as indicated on
the Solbrake / SMB label.
Mounting
* The Solbrake / SMB must be mounted vertically, allow
space above and below the unit for sufficient airflow.
* It is recommended to mount the SMB directly on the rear
metal plate for better heat dissipation.
*
Do not mount the Solbrake / SMB near heat sources.
*
Protect the Solbrake / SMB from dust and corrosive
atmosphere.
Temp. Range and Heat Dissipation
The Solbrake / SMB is rated to operate over a temperature
range of -10
°
C (14
°
F) to +50
°
C (122
°
F).
Relative non-condensed humidity inside the enclosure
should not exceed 93%.
The average heat dissipation of the Solbrake / SMB
depends on the Braking Torque setting and on the duty
cycle.
Heating inside the enclosure can be reduced through the
use of additional ventilation.
Note:
The heat generated in the motor during braking is
similar to the heat generated during starting. Therefore,
high setting of the Braking Torque and/or a high duty cycle
may require an external cooling fan for the motor. It is
recommended to use temperature sensor in the motor
which will allow restarting only after the motor
temperature has reduced to an allowed level.
Short Circuit Protection
The Solbrake / SMB must be protected against short circuit
by fast-acting fuses. Recommended I
2
t values in page 9.
Transient Protection
Line transient voltages can cause malfunctioning of the
brake and damage to the SCRs.
When high transients are expected, an external protection
should be used, (consult factory).
Wiring
Connections to L
1
, L
2
, U, V and W should be done with
power cables. Connections to terminals 1-6 are for control
only.
Do not connect two Solbrake / SMB brakes in parallel as
they are not synchronized and will be damaged.
Mechanical and electrical interlock between Mains
contactor C
1
and braking contactor C
2
must be installed to
prevent both contactors from being closed simultaneously.
Solbrake / SMB Wiring
The Solbrake / SMB (10-17) are meant for installation on a
Din-Rail. See options list for other Din-Rail ratings.
U V W L
1
L
2
1 2 3 4 5 6
Power Factor Capacitors
Power factor correction capacitors must not be installed on
the load side of the Solbrake / SMB. When required,
capacitors should be installed on the Solbrake / SMB's line
side.
N
otes:
1.
The Solbrake / SMB uses Mains power to produce
the braking torque. Therefore, a power failure or
disconnection will disable the DC braking and the
motor will coast to a stop without braking.
2.
When required to stop a motor during a power
outage, an electro-mechanical brake must be used.
3.
The Solbrake / SMB cannot be used for continuous
holding of loads, after motor had stopped. An
electro-mechanical brake should be used for holding
at stop position.
Warning
Wrong connections of Solbrake line and load sides
will cause damage to the brake and motor.
