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Siemens CR 1 · Online Update December 2016
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Design
(continued)
SIMOTICS motors for cranes
SIMOTICS SD – Severe Duty motors
KFB spring-set brake for SIMOTICS SD 1LP4, 1LP6
Protective element
The brakes should be connected at the DC end, i.e. between the
rectifier and coil (see circuit diagram below). This ensures a sig-
nificantly shorter closing time than if the brake were connected
at the AC end. A protective element (varistor + spark quen-
ching) must be fitted in parallel to each brake coil. This protects
the brake coil against excessively high de-energization voltages
on the one hand, and the contactor contacts on the other. These
protective elements must be installed close to the brake coils
where possible, e.g. in the motor terminal box or in a distribution
board on the subframes in the case of traversing gear. Protective
elements PE-400/150/5 are directly available from the
manufacturer
1)
under Article No. 008099300249.
Technical specifications
Special versions
Emergency release with hand lever, option
J25
In addition to brake release at zero current via 2 emergency re-
lease screws, it is also possible to release the brake by means
of a hand lever permanently mounted on the brake housing. The
lever is lockable.
Microswitch for "brake released" monitoring, option
J26
The brake can be fitted with a microswitch for monitoring the
"brake released" state. The contact is rated for:
•
< 30 V DC, 5.0 A
•
< 125 V DC, 0.5 A
•
< 250 V AC, 5.0 A
Microswitch for air gap monitoring/wear, option
J24
A 2nd microswitch can be fitted to monitor the "maximum air
gap" function. Tripping of this contact indicates that full braking
power is no longer available and the air gap must be adjusted
immediately. The contact load rating is identical to that of the
"brake released" microswitch.
Standstill heater, option
J27
The installation of a heater can prevent the formation of conden-
sate, e.g. caused by fluctuations in temperature and air humi-
dity, inside the brake. This heater must not be switched on when
the motor is operating. The heater is designed for a supply vol-
tage of 230 V AC and a heat output of 40 W.
Encoder mounting, option
J28
/
J29
An encoder (e.g. POG 10) can be mounted on the brake. Addi-
tional mounting components and other measures are required
on the brake to fit an encoder.
Tacho socket T2 with coupling and mounting components is
ordered with option
J28
(see section "Design").
If an encoder is to be fitted at a later date, the brake can be sup-
plied prepared for encoder mounting. This is possible with op-
tion
J29
. Option
J29
does not include the coupling and moun-
ting components.
It is also possible to retrofit an encoder by replacing the brake
housing (the parts required, such as new housing, coupling,
etc., can be ordered directly from the manufacturer
1)
) using the
brake serial number as a reference).
Brake control unit BCU
A brake control unit (BCU) can also be used to supply and
monitor the brake on single drives. For technical specifications,
price, etc., please contact the manufacturer
1)
directly.
Rectifier in terminal box, option
C07
/
C01
The brake motors can also be supplied with a bridge rectifier
installed.
Note:
It must, however, be noted that the closing time for the brake can
be a factor of 10 longer than the values specified in the tables
(see section "Technical specifications" below) because it is con-
nected at the AC current side.
Three-phase asynchronous motors 1LP4, 1LP6, 60 Hz variant
The motor types 1LP4 and 1LP6 are also available in a 60 Hz
variant.
The following must be stated in addition to the Article No.:
• 400 V
1LP
....
-
.....
L5K
• 460 V
1LP
....
-
.....
L5L
• 500 V
1LP
....
-
.....
L5M
Technical specifications on request.
Protective element
Connection voltage, max.
(coil voltage)
400 V DC
Max. coil current
5 A
Max. energy absorption of one trip
150 J
Max. continuous output (average)
of energy absorption
5 W
Trip peak at max. coil current
< 450 V
Ambient temperature
-40 ... +50 °C
Permissible cross section
of connecting lead
0.2 ... 2.5 mm
2
Weight, approx.
0.2 kg
Degree of protection
IP20
1)
PINTSCH BUBENZER GmbH
Werk Dinslaken
Hünxer Str. 149
D-46537 Dinslaken
Tel. +49 (0) 2064 / 602-0
Fax +49 (0) 2064 / 602-515
www.pintschbubenzer.de
E-mail: info@pintschbubenzer.de
Brake 1
Brake 2
Brake 3
DC contactor
Protective
circuit
Rectifier
G_CR01_EN_00056
~
~
+
-
L1
N
K1
1
2
3
4
© Siemens AG 2016