Mitsubishi MELDAS HS Series User Manual

Chapter 3 Characteristics
3–6
3-3-2 Coasting amount
The motor coasting amount when stopped by a dynamic brake can be approximated using the
following expression.
CMAX =
No
60
· te + ( 1 +
J
L
J
M
) · (A · No
3
+ B · No)
CMAX : Maximum motor coasting amount (turn)
No : Initial motor speed (r/min)
JM : Motor inertia (kg·cm
2
)
JL : Motor shaft conversion load inertia (kg·cm
2
)
te : Brake drive relay delay time (sec) (Normally, 0.03sec)
A : Coefficient A (Refer to the table below)
B : Coefficient B (Refer to the table below)
Fig. 3-3 Dynamic brake braking diagram
Table 3-2 Coasting amount calculation coefficients
Motor
type
JM
(kg·cm
2
)
A B Motor type
JM
(kg·cm
2
)
A B
HS-MF23 0.088 1.38 × 10
–11
0.90 × 10
–5
HS-SF52 6.6 16.13 × 10
–11
11.93 × 10
–5
HS-RF43 0.8 2.04 × 10
–11
2.07 × 10
–5
HS-SF53 6.6 15.99 × 10
–11
10.71 × 10
–5
HS-RF73 1.5 2.04 × 10
–11
2.07 × 10
–5
HS-SF102 13.6 4.00 × 10
–11
9.38 × 10
–5
HS-SF103 13.6 3.53 × 10
–11
11.58 × 10
–5
HS-SF202 42.5 25.60 × 10
–11
16.07 × 10
–5
OFF
t
e
OFF
OFF
Emergency stop (EMG)
Motor brake actual operation
Initial speed: No
Time
Motor speed
Coasting amount
Motor brake control output

Mitsubishi MELDAS HS Series Specifications

General

Brand	Mitsubishi
Model	MELDAS HS Series
Category	Servo Drives
Language	English