3-87
3-3 Servomotor Specifications
OMNUC G5-SERIES AC SERVOMOTOR AND SERVO DRIVE USER'S MANUAL
3
Specifications
*1. These are the values when the Servomotor is combined with a drive at normal temperature (20°C, 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 ten 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.).
Brake specifications
Brake inertia kg • m
2
4.7×10
-4
7.1×10
-4
7.1×10
-4
Excitation voltage *
4
V 24 VDC ± 10%
Power consumption
(at 20°C)
W34 26 26
Current consumption
(at 20°C)
A1.4±10% 1.08±10% 1.08±10%
Static friction torque N • m 58.8 min. 100 min. 100 min.
Attraction time *
5
ms 150 max. 300 max. 300 max.
Release time *
5
ms 50 max. 140 max. 140 max.
Backlash ±1°
Allowable work per
braking
J 1,372 2,000 2,000
Allowable total work J 2.9×10
6
4.0×10
6
4.0×10
6
Allowable angular
acceleration
rad/s
2
5,000 3,000
Brake limit − 10 million times min.
Rating − Continuous
Insulation class − Type F
Model (R88M-)
Item Unit
400 VAC
--- --- ---
K7K515C K11K015C K15K015C
Radial load
Thrust load
Shaft center (T/2)
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