14. USING A LINEAR SERVO MOTOR
14 - 31
CAUTION
The coasting distance is a theoretically calculated value which ignores the
running load such as friction. The calculated value is considered to be longer than
the actual distance. However, if an enough braking distance is not provided, a
moving part may crash into the stroke end, which is very dangerous. Install the
anti-crash mechanism such as an air brake or an electric/mechanical stopper
such as a shock absorber to reduce the shock of moving parts. No linear servo
motor with an electromagnetic brake is available.
14.4.3 Dynamic brake characteristics
POINT
Do not use dynamic brake to stop in a normal operation as it is the function to
stop in emergency.
For a machine operating at the recommended load to motor mass ratio or less,
the estimated number of usage times of the dynamic brake is 1000 times while
the machine decelerates from the rated speed to a stop once in 10 minutes.
Be sure to enable EM1 (Forced stop 1) after the linear servo motor stops when
using EM1 (Forced stop 1) frequently in other than emergency.
The approximate coasting distance from when the dynamic brake is activated until when the linear servo
motor stops can be calculated with the equation below.
Lmax = V
0
• (0.03 + M • (A + B • V
0
2
))
Lmax: Coasting distance of the machine [m]
V
0
: Speed when the brake is activated [m/s]
M: Full mass of the moving part [kg]
A: Coefficient (Refer to the following tables.)
B: Coefficient (Refer to the following tables.)
Linear servo motor
Coefficient A
Coefficient B
Linear servo motor
Coefficient A
Coefficient B
LM-H3P2A-07P-BSS0
7.15 × 10
-3
2.94 × 10
-3
LM-U2PAB-05M-0SS0
5.72 × 10
-2
1.72 × 10
-4
LM-H3P3A-12P-CSS0
2.81 × 10
-3
1.47 × 10
-3
LM-U2PAD-10M-0SS0
2.82 × 10
-2
8.60 × 10
-5
LM-H3P3B-24P-CSS0
7.69 × 10
-3
2.27 × 10
-4
LM-U2PAF-15M-0SS0
1.87 × 10
-2
5.93 × 10
-5
LM-H3P3D-48P-CSS0
1.02 × 10
-3
2.54 × 10
-4
LM-U2PBB-07M-1SS0
3.13 × 10
-2
1.04 × 10
-4
LM-H3P7A-24P-ASS0
7.69 × 10
-3
2.14 × 10
-4
LM-U2PBD-15M-1SS0
1.56 × 10
-2
5.18 × 10
-5
LM-U2PBF-22M-1SS0
4.58 × 10
-2
1.33 × 10
-5
Linear servo motor
Coefficient A
Coefficient B
LM-K2P1A-01M-2SS1
5.36 × 10
-3
6.56 × 10
-3
LM-K2P2A-02M-1SS1
2.49 × 10
-2
1.02 × 10
-3
Содержание MR-J4W2-0303B6
Страница 17: ...8 App 16 Status of general purpose AC servo products for compliance with the China RoHS directive App 58 ...
Страница 39: ...2 INSTALLATION 2 8 MEMO ...
Страница 97: ...4 STARTUP 4 20 MEMO ...
Страница 181: ...6 NORMAL GAIN ADJUSTMENT 6 28 MEMO ...
Страница 235: ...9 DIMENSIONS 9 6 MEMO ...
Страница 245: ...10 CHARACTERISTICS 10 10 MEMO ...
Страница 309: ...13 USING STO FUNCTION 13 14 MEMO ...
Страница 365: ...15 USING A DIRECT DRIVE MOTOR 15 24 MEMO ...
Страница 389: ...16 FULLY CLOSED LOOP SYSTEM 16 24 MEMO ...
Страница 461: ...17 APPLICATION OF FUNCTIONS 17 72 MEMO ...
Страница 556: ...APPENDIX App 41 ...
Страница 585: ...MEMO ...