Delta MS300 Series User Manual page 50

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460V 3-phase
Model
VFD1A5MS43XNSXX
VFD1A5MS43AFSAA
VFD2A7MS43XNSXX
VFD2A7MS43AFSAA
VFD4A2MS43XNSXX
VFD4A2MS43AFSAA
VFD5A5MS43XNSXX
VFD5A5MS43AFSAA
VFD9A0MS43XNSXX
VFD9A0MS43AFSAA
VFD13AMS43XNSXX
VFD13AMS43AFSAA
VFD17AMS43XNSXX
VFD17AMS43AFSAA
VFD25AMS43XNSXX
VFD25AMS43AFSAA
VFD32AMS43XNSXX
VFD32AMS43AFSAA
VFD38AMS43XNSXX
VFD38AMS43AFSAA
VFD45AMS43XNSXX
VFD45AMS43AFSAA
1
*
Standard braking torque is 125 %. Because of the limited resistor power, the longest operation time for 10% ED is 10sec. (on:
10 sec. / off: 90 sec.).
2
*
Please refer to the Brake Performance Curve for "Operation Duration & ED (%)" vs. "Braking Current".
3
*
Calculation for braking torque is for a 4-pole motor 1800 rpm.
4
*
Resistors of 400W or lower should be fixed to the frame and at a surface temperature below 50°C.
Resistors of 1000W and above should be fixed on a surface with temperature below 350°C
NOTE
1.
Please select the resistance value, power and brake usage (ED %) acc. to Delta rules.
Definition for Brake Usage ED%
For safety concern, install a thermal overload relay (O.L) between the brake unit and the brake resistor in
conjunction with the magnetic contactor (MC) before to the drive for additional protection. The purpose of the
thermal overload relay is to protect the brake resistor from damage due to frequent or continuous braking.
Under such circumstances, just turn off the power to prevent damaging the brake resistor, brake unit and
drive.
2. If the drive or other equipment is damaged due to the fact that the brake resistors and brake modules in use
are not provided by Delta, warranty will be void.
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Applicable
1
*
Motor
3
*
Resistor value
Braking
HP KW
spec. for each
Torque
AC motor Drive
(kg-m)
0.5 0.4 0.3 80W 750Ω
1 0.75 0.5 80W 750Ω
2 1.5 1 200W 360Ω
3 2.2 1.5 300W 250Ω
5 3.7 2.5 400W 150Ω
7.5 5.5 3.7 1000W 75Ω
10 7.5 5.1 1000W 75Ω
15 11 7.4 1500W 43Ω
20 15 10.2 2000W 32Ω
25 18 12.2 2000W 32Ω
30 22 14.9 3000W 26Ω
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Chapter 7 Optional AccessoriesMS300
125 % Braking Torque 10 % ED
Braking Resistor for
each Brake Unit
4
*
Amount Usage
Part No.
BR080W750 1
BR080W750 1
BR200W360 1
BR300W250 1
BR400W150 1
BR1K0W075 1
BR1K0W075 1
BR1K5W043 1
BR1K0W016 2
BR1K0W016 2
BR1K5W013 2
Explanation: ED (%) is defined to allow enough time for
7-3
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2
*
Max. Brake Torque
Braking Min. Max. Total
Current Resistor
(A) Value (Ω) Current (A)
1 380.0
1 190.0
2.1 126.7
3 108.6
5.1 84.4
10.2 50.7
10.2 40.0
17.6 33.0
2 in
24 26.2
series
2 in
24 26.2
series
2 in
29 23.0
series
the brake unit and brake resistor to
dissipate the heat generated by braking.
Recommended cycle time T0 is one
minute.
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Peak
Braking Power
(kW)
2 1.5
4 3.0
6 4.6
7 5.3
9 6.8
15 11.4
19 14.4
23 17.5
29 22.0
29 22.0
33 25.1