153
H
Specifications for Servomotors with Magnetic Brakes
The magnetic brakes installed in Servomotors with brakes are status-holding brakes
with non-magnetized operation. The magnetic brake is released when a magnetic cur-
rent (24 VDC) is applied. The magnetic brake is not meant to be used for braking. Using it
for braking will damage it. During Servomotor operation, be sure to release the magnetic
brake by applying a magnetic voltage. The specifications for Servomotors with brakes
are similar to those for Servomotors without brakes, so except for inertia and weight, the
various constants are all the same.
Note: The inertia for magnetic brakes is the load inertia.
D
Specifications for AC Servomotors With Brakes (Specifications in Common for 100
and 200 VAC)
Item
Unit
R88M
-U03030
j
-B
R88M
-U05030
j
-B
R88M
-U10030
j
-B
R88M
-U20030
j
-B
R88M
-U30030
j
-B
R88M
-U40030
j
-B
R88M
-U75030
j
-B
Rotor in-
ertia
kg
S
m
2
(GD
2
/4)
0.21
×
10
–5
0.26
×
10
–5
0.40
×
10
–5
1.23
×
10
–5
1.91
×
10
–5
1.91
×
10
–5
6.71
×
10
–5
Brake in-
ertia
kg
S
m
2
(GD
2
/4)
0.09
×
10
–5
0.58
×
10
–5
1.40
×
10
–5
Total in-
ertia
kg
S
m
2
(GD
2
/4)
0.30
×
10
–5
0.35
×
10
–5
0.49
×
10
–5
1.81
×
10
–5
2.49
×
10
–5
2.49
×
10
–5
8.11
×
10
–5
Weight
(approx.)
kg
0.6
0.7
0.8
1.6
2.2
2.2
4.3
Magne-
tized
voltage
V
24 VDC
±
10% (No polarity)
Power
con-
sumption
W (at 20
°
C)
6
6
6.5
6
Current
con-
sumption
A (at 20
°
C)
0.25
0.25
0.27
0.25
Static
friction
torque
N
S
m
0.2 min.
0.34 min.
1.5 min.
2.5 min.
Absorp-
tion time
(see
note 1)
ms
(40 max.)
(60 max.)
(100 max.)
(200 max.)
Release
time
(see
note 1)
ms
(20 max.)
(30 max.)
(40 max.)
(50 max.)
Backlash
---
(
±
1
°
)
Rating
---
Continuous
Insula-
tion
grade
---
Type F (brake only)
Note
1. The operation time measurement is the measured value with a surge killer (CR50500, by Okaya Elec-
tric Industrial Co.) installed.
Note
2. The items in parentheses are reference values.
Specifications
Chapter 5
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