sh030106u.pdf - 第501页

14. USIN G A LINEAR SER VO MOTOR 14 - 34 14.4.2 Power supply ca pacity and gener ated loss Table 14. 1 ind icates s ervo amplif iers' pow er supp ly ca pacit ies an d loss es gener ated under rated load. For thermal…

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14. USING A LINEAR SERVO MOTOR
14 - 33
(b) Other than LM-FP2B-06M-1SS0 (liquid cooling)
50 100 150 200 250 3000
0.1
10
1
100
1000
[%]Load ratio
: Operating
: Servo-lock
Operation time [s]
14. USING A LINEAR SERVO MOTOR
14 - 34
14.4.2 Power supply capacity and generated loss
Table 14.1 indicates servo amplifiers' power supply capacities and losses generated under rated load. For
thermal design of an enclosed type cabinet, use the values in the tables in consideration for the harshest
conditions with regard to the environment and operation pattern. The actual amount of generated heat will be
intermediate between values at rated torque and servo-off according to the duty used during operation.
When the linear servo motor is run at less than the rated speed, the power supply capacity will be smaller
than the value in the table, but the servo amplifier's generated heat will not change.
Mounting a heat sink outside of the cabinet enables to reduce heat in the cabinet and design a compact
enclosed type cabinet.
Table 14.1 Power supply capacity and generated loss per linear servo motor
Linear servo motor
(primary side)
Servo amplifier
Power supply
capacity [kVA]
(Note 1)
Servo amplifier-generated heat [W]
(Note 2)
Area required for
heat dissipation
[m
2
]
At rated output With servo-off
LM-H3P2A-07P-BSS0
MR-J4-40B(-RJ)
MR-J4-40B1(-RJ)
0.9 35 15 0.7
LM-H3P3A-12P-CSS0 0.9 35 15 0.7
LM-H3P3B-24P-CSS0
MR-J4-70B(-RJ)
1.3 50 15 1.0
LM-H3P3C-36P-CSS0 1.9 75 15 1.5
LM-H3P3D-48P-CSS0 MR-J4-200B(-RJ) 3.5 90 20 1.8
LM-H3P7A-24P-ASS0 MR-J4-70B(-RJ) 1.3 50 15 1.0
LM-H3P7B-48P-ASS0
MR-J4-200B(-RJ)
3.5 90 20 1.8
LM-H3P7C-72P-ASS0 3.8 100 20 1.1
LM-H3P7D-96P-ASS0 MR-J4-350B(-RJ) 5.5 130 20 2.7
LM-U2PAB-05M-0SS0
MR-J4-20B(-RJ)
MR-J4-20B1(-RJ)
0.5 25 15 0.5
LM-U2PAD-10M-0SS0
MR-J4-40B(-RJ)
MR-J4-40B1(-RJ)
0.9 35 15 0.7
LM-U2PAF-15M-0SS0 0.9 35 15 0.7
LM-U2PBB-07M-1SS0
MR-J4-20B(-RJ)
MR-J4-20B1(-RJ)
0.5 25 15 0.5
LM-U2PBD-15M-1SS0 MR-J4-60B(-RJ) 1.0 40 15 0.8
LM-U2PBF-22M-1SS0 MR-J4-70B(-RJ) 1.3 50 15 1.0
LM-U2P2B-40M-2SS0 MR-J4-200B(-RJ) 3.5 90 20 1.8
LM-U2P2C-60M-2SS0 MR-J4-350B(-RJ) 5.5 130 20 2.7
LM-U2P2D-80M-2SS0 MR-J4-500B(-RJ) 7.5 195 25 3.9
LM-FP2B-06M-1SS0 MR-J4-200B(-RJ) 3.5 90 20 1.8
LM-FP2D-12M-1SS0 MR-J4-500B(-RJ) 7.5 195 25 3.9
LM-FP2F-18M-1SS0 MR-J4-700B(-RJ) 10 300 25 6.0
LM-FP4B-12M-1SS0 MR-J4-500B(-RJ) 7.5 195 25 3.9
LM-FP4D-24M-1SS0 MR-J4-700B(-RJ) 10 300 25 6.0
LM-FP4F-36M-1SS0 MR-J4-11KB(-RJ) 14 460 45 9.2
LM-FP4H-48M-1SS0 MR-J4-15KB(-RJ) 18 580 45 11.6
LM-FP5H-60M-1SS0 MR-J4-22KB4(-RJ) 22 640 45 12.8
LM-K2P1A-01M-2SS1
MR-J4-40B(-RJ)
MR-J4-40B1(-RJ)
0.9 35 15 0.7
LM-K2P1C-03M-2SS1 MR-J4-200B(-RJ) 3.5 90 20 1.8
LM-K2P2A-02M-1SS1 MR-J4-70B(-RJ) 1.3 50 15 1.0
LM-K2P2C-07M-1SS1 MR-J4-350B(-RJ) 5.5 130 20 2.7
LM-K2P2E-12M-1SS1 MR-J4-500B(-RJ) 7.5 195 25 3.9
LM-K2P3C-14M-1SS1 MR-J4-350B(-RJ) 5.5 130 20 2.7
LM-K2P3E-24M-1SS1 MR-J4-500B(-RJ) 7.5 195 25 3.9
Note 1. The power supply equipment capacity changes with the power supply impedance. This value is applicable when the power
factor improvin
g
AC reactor or power factor improvin
g
DC reactor is not used.
2. Heat generated during regeneration is not included in the servo amplifier-generated heat. To calculate heat generated by the
re
g
enerative option, refer to section 11.2.
14. USING A LINEAR SERVO MOTOR
14 - 35
14.4.3 Dynamic brake characteristics
CAUTION
The coasting distance is a theoretically calculated value that does not consider
factors such as friction. The calculated distance is longer than the actual distance.
If the braking distance is not longer than the calculated value, a moving part may
crash into the stroke end, causing a dangerous situation. Install an 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.
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
(primary side)
Coefficient A Coefficient B
Linear servo motor
(primary side)
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-H3P3C-36P-CSS0 7.22 × 10
-3
1.13 × 10
-4
LM-U2PBB-07M-1SS0 3.13 × 10
-2
1.04 × 10
-4
LM-H3P3D-48P-CSS0 1.02 × 10
-3
2.54 × 10
-4
LM-U2PBD-15M-1SS0 1.56 × 10
-2
5.18 × 10
-5
LM-H3P7A-24P-ASS0 7.69 × 10
-3
2.14 × 10
-4
LM-U2PBF-22M-1SS0 4.58 × 10
-2
1.33 × 10
-5
LM-H3P7B-48P-ASS0 9.14 × 10
-4
2.59 × 10
-4
LM-U2P2B-40M-2SS0 1.47 × 10
-3
1.27 × 10
-5
LM-H3P7C-72P-ASS0 7.19 × 10
-4
1.47 × 10
-4
LM-U2P2C-60M-2SS0 1.07 × 10
-3
7.66 × 10
-6
LM-H3P7D-96P-ASS0 6.18 × 10
-4
9.59 × 10
-5
LM-U2P2D-80M-2SS0 9.14 × 10
-4
5.38 × 10
-6
Linear servo motor
(primary side)
Coefficient A Coefficient B
Linear servo motor
(primary side)
Coefficient A Coefficient B
LM-FP2B-06M-1SS0 8.96 × 10
-4
1.19 × 10
-3
LM-K2P1A-01M-2SS1 5.36 × 10
-3
6.56 × 10
-3
LM-FP2D-12M-1SS0 5.55 × 10
-4
4.81 × 10
-4
LM-K2P1C-03M-2SS1 1.17 × 10
-3
3.75 × 10
-4
LM-FP2F-18M-1SS0 4.41 × 10
-4
2.69 × 10
-4
LM-K2P2A-02M-1SS1 2.49 × 10
-2
1.02 × 10
-3
LM-FP4B-12M-1SS0 5.02 × 10
-4
4.36 × 10
-4
LM-K2P2C-07M-1SS1 6.85 × 10
-4
2.80 × 10
-4
LM-FP4D-24M-1SS0 3.55 × 10
-4
1.54 × 10
-4
LM-K2P2E-12M-1SS1 5.53 × 10
-4
1.14 × 10
-4
LM-FP4F-36M-1SS0 1.79 × 10
-4
1.36 × 10
-4
LM-K2P3C-14M-1SS1 2.92 × 10
-4
1.16 × 10
-4
LM-FP4H-48M-1SS0 1.15 × 10
-4
1.19 × 10
-4
LM-K2P3E-24M-1SS1 2.53 × 10
-4
5.52 × 10
-5
LM-FP5H-60M-1SS0 1.95 × 10
-4
4.00 × 10
-5