SEW-Eurodrive CMDV55 Manuale utente
*21929181_0315*
Drive Technology \ Drive Automation \ System Integration \ Services
Revision
Synchronous Compact Servomotors
CMDV55 – CMDV162
1Revision
Markings
Revision – Synchronous Compact Servomotors
2
1Revision
INFORMATION
The revision at hand provides information/changes in addition to the already available
"Synchronous Compact Servomotors CMDV55 – CMDV162" operating instructions.
1.1 Markings
The following table lists all marks that can occur on a nameplate or on the motor and
an explanation of what they mean.
Mark Meaning
EAC mark (EurAsian Conformity)
Confirms compliance with the technical regulations of the economic and
customs union of Russia, Belarus, Kazakhstan, and Armenia.
013
UkrSEPRO mark (Ukrainian Certification of Products)
Confirms compliance with the technical regulations of the country Ukraine.
21929181/EN – 03/2015
1
Revision
Technical data of the BP brake
Revision – Synchronous Compact Servomotors 3
1.2 Technical data of the BP brake
Motor
type
Brake M2, 20 °C
Nm
M4, 100 °C
Nm
M1m, 100 °C
Nm
W1
kJ
W2
kJ
Winsp
kJ
t1
ms
t2
ms
CMDV55 BP01 0.95 0.6 0.4 0.4 4.8 0.2
200 75
CMDV70 BP04 3.1 1.9 1.2 0.6 7.2 1.0
4.3 2.6 1.7
CMDV93 BP09 7.0 4.2 2.8 1.0 10.0 1.8
9.3 5.6 3.7
CMDV138 BP3 16 9.6 6.4 2.2 26.4 4.1
31 18.6 12.4
CMDV162 BP5 24 14.4 9.6 3.6 43.2 6.7
47 28.2 18.8
Standard braking torque
Optional braking torque
M2, 20 °C Nominal braking torque with slipping brake disk at 20 °C
Relative speed between brake disk and friction surface: 1 m/s
M4, 100 °C Minimum static braking torque (holding torque) at 100 °C
M1m, 100 °C Minimal averaged dynamic braking torque in case of emergency switch-
ing off at 100 °C
W1Permitted braking work per braking operation
W2Permitted braking work per hour
Winsp Permitted total braking work (braking work until maintenance)
t1Brake response time
t2Brake application time
21929181/EN – 03/2015
1Revision
Maximum permitted number of switching cycles
Revision – Synchronous Compact Servomotors
4
1.3 Maximum permitted number of switching cycles
Motor Brake Permitted number of switching
cycles
CMDV55 BP01 150000
CMDV70 BP04 1000000
CMDV93 BP09 1500000
CMDV138 BP3 2500000
CMDV162 BP5 1500000
21929181/EN – 03/2015
1
Revision
BP brake project planning
Revision – Synchronous Compact Servomotors 5
1.4 BP brake project planning
1.4.1 Data for brake dimensioning
The data of the application must be known for projecting a brake. The abbreviations
used for project planning are summarized in the following table:
Designation Meaning Unit
ηGEfficiency of the gear unit
Jext External mass moment of inertia (in relation to motor shaft) kgm2
JMot Mass moment of inertia of the motor kgm2
M1max Maximum dynamic braking torque in case of emergency switching off Nm
M1m, 100 °C Minimal averaged dynamic braking torque in case of emergency switching off at
100 °C
Nm
M2, 20 °C Nominal torque for slipping brake disk (relative speed between brake disk and
friction surface: 1 m/s) at 20 °C
Nm
M4, 100 °C Minimum static braking torque (holding torque) at 100 °C Nm
MaNOTAUS Maximum permitted emergency switching off torque of the gear unit Nm
i Gear unit ratio
MLStatic load torque, in relation to motor shaft Nm
nmMotor speed, from application or travel diagram rpm
nDIncrease of motor speed until brake application rpm
nm emergency stop Real emergency stop speed, relevant for check rpm
sbStopping distance mm
t2Brake application time s
tBBraking time s
trResponse time or signal transmit time s
v Speed m/s
W1Permitted braking work per braking operation J
W2Permitted braking work per hour J
Winsp Permitted total braking work (braking work until maintenance) J
21929181/EN – 03/2015
1Revision
BP brake project planning
Revision – Synchronous Compact Servomotors
6
1.4.2 Hold function
The selected braking torque M4, 100 °C must at least be higher than the highest static
load torque of the application.
M M
4 100, C L°>
The following table shows the number of permitted switching cycles of the BP brake
until end of service life when used exclusively as holding brake.
Motor Brake Permitted number of switching
cycles
CMS50 BP04 1000000
CMSB63 BP09 1500000
CMSB71 BP1 4500000
1.4.3 Emergency switching off function for lifting applications
To ensure a deceleration of the load, for lifting applications, the lowest averaged dy-
namic braking torque M1m, 100 °C must be higher than the highest static load torque of
the application.
M M
1 100 1 2
m, C L .
°> ×
1.4.4 Speed difference during brake application
Due to the interaction of response time (signal transmit time), brake application time
and the gravitational acceleration, the hoist may be in "free fall" for a short time. This
results in an increased motor speed by nD (hoist downwards) or in a decreased motor
speed by nD (hoist upwards).
Calculation of the emergency stop speed (hoist downwards):
n n n
m,EmergencyStop m D
= +
Calculation of the emergency stop speed (horizontal drive and hoist upwards):
n n n
m,EmergencyStop m D
= −
nM t t
J J
DL r
Mot ext G
=× × +
( )
+ ×
9 55 2
,
η
21929181/EN – 03/2015
1
Revision
BP brake project planning
Revision – Synchronous Compact Servomotors 7
1.4.5 Working capacity in case of emergency switching off
Braking work per braking cycle in case of emergency switching off:
W(J + J h ) n M
182.4 M
Mot ext G m,EmergencyStop21m,100 C
1m
1=
,,100 C L
– M
( )
Observe the sign of the highest static load torque ML in the formula. Use:
+For vertical upward and horizontal movement
- For vertical downward movement
The calculated braking work W1 is compared with the permitted braking work per brak-
ing operation W1 of the BP brake.
According to the possible number of emergency switching off braking operations, it
must also be compared with the permitted braking work per hour W2 of the BP brake.
W W
BPbrake calculated1 1( ) ( )
>
1.4.6 Braking time / stopping distance
Braking time hoist downwards
t J J n
M
B
Mot ext
m C
=+ × ×
× −
°
( )
.,
η
G m,EmergencyStop
9 55 1 100 MML
( )
Braking time horizontal drive, hoist upwards
t J J n
M M
B
Mot ext
m C
=+ × ×
× +
°
( )
.,
η
G m,EmergencyStop
9 55 1 100 LL
( )
Stopping distance
s v t t t
b r B
= × × + + ×1000 1
2
2
( )
1.4.7 Permitted gear unit load in case of emergency switching off
When using a gearmotor, in case of emergency switching off, the maximum dynamic
braking torque in case of emergency switching off M1max must not exceed the maxi-
mum permitted emergency switching off torque MaNOTAUS of the gear unit.
The value of the maximum permitted emergency switching off torque MaNOTAUS is speci-
fied in the "Synchronous Servo Gearmotors" catalog.
M M i
aNOTAUS C G
≥ × ×
°2 20,
η
21929181/EN – 03/2015
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