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3-3 Servomotor Specifications
OMNUC G5-Series AC Servo Drives Users Manual (Built-in MECHATROLINK-II communications type)
  3
Specifications
*1. These are the values when the motor is combined with a drive at normal temperature (20C, 65%). The momentary 
maximum torque indicates the standard value.
*2. Applicable load inertia. 
 The operable load inertia ratio (load inertia/rotor inertia) depends on the mechanical configuration and its rigidity.
For a machine with high rigidity, operation is possible even with high load inertia. Select an appropriate motor and
confirm that operation is possible.
 The dynamic brake is rated for short-term operation. Use it only for emergency stopping. Design the system to stop
for at least three minutes after the dynamic brake operates. Otherwise, the dynamic brake circuits may fail or the
dynamic brake resistor may burn.
*3. The allowable radial and thrust loads are the values determined for a limit of 20,000 hours at normal operating 
temperatures. 
The allowable radial loads are applied as shown in the following diagram.
*4. This is a non-excitation brake. (It is released when excitation voltage is applied.)
*5. The operation time is the value (reference value) measured with a surge suppressor (CR50500 by Okaya Electric 
Industries Co., Ltd.). 
*6. Direct current switching with a varistor (TNR9G820K by Nippon Chemi-Con Corporation). 
*7. Direct current switching with a varistor (Z15D151 by Ishizuka Electronics Co.). 
Model (R88M-)
Item Unit
400 VAC
K90010F K2K010F K3K010F
K90010C K2K010C K3K010C
Brake specifications
Brake inertia kg • m
2
1.3510
-4
4.710
-4
4.710
-4
Excitation voltage *
4 
V 24 VDC ± 10%
Power consumption 
(at 20C)
W19 31 34
Current consumption 
(at 20C)
A0.7910% 1.310% 1.410%
Static friction torque N • m 13.7 min. 24.5 min. 58.8 min.
Attraction time *
5 
ms 100 max. 80 max. 150 max.
Release time *
5 
ms 50 max. *
6 
25 max. *
7 
50 max. *
7 
Backlash 1
Allowable work per 
braking
J 1176 1372 1372
Allowable total work J 1.510
6
2.910
6
2.910
6
Allowable angular 
acceleration
rad/s
2
10,000
Brake limit
10 million times min. 
Rating
Continuous
Insulation class
Type F
Radial load
Thrust load
Shaft center (LR/2)