VFDB Microsoft Word - VFDB manual_ 5012605700-00BU (EN)

2. MASTER/SLAVE setting: The MASTER/SLAVE jumper is set “MASTER” as factory setting. The “SLAVE” setting is applied to two or more braking units in parallel, making these braking units be enabled/disabled synchronously. Then the power dissipation of each unit will be equivalent so that they can perform the braking function completely. SLAVE output signal+ SLAVE output signal- ` Braking Resistors & Braking Units Use in the AC Drives NOTE: Before wiring, please notice equivalent resistors value shown in the column “Equivalent resistors specification for each braking unit” in the above table to prevent damage. 460V 150HP Input Voltage Setting M SLAVE input signal+ SLAVE input signal- NOTE:

Please use shielded wires while wiring. M1 M2 S2 S1 RC RA SLAVE output/input terminal Min. Equivalent Resistor Value 250 185 125.3 21000W 3.4Ω 4185 1 BR1K5W012 14 225 3.4Ω 475 355 240.3 42000W 1.7Ω 4185 2 BR1K5W012 28 450 1.7Ω The position of the jumper M1: M2: S1: S2: 150 110 74.5 12000W 6Ω 4110 1 BR1K2W015 10 126 6Ω 175 132 89.4 18000W 4Ω 4160 1 BR1K5W012 12 190 4Ω 215 160 108.3 18000W 4Ω 4160 1 BR1K5W012 12 190 4Ω 300 220 148.9 24000W 3Ω 4110 2 BR1K2W015 20 252 3Ω 375 280 189.6 36000W 2Ω 4160 2 BR1K5W012 24 380 2Ω 425 315 213.3 36000W 2Ω 4160 2 BR1K5W012 24 380 2Ω 480V 460V 440V 415V 400V 380V Max.

Discharge Current (A) Power lamp Brake lamp Over-current Overheat lamp lamp CHARGE ACT OC OH 480V 460V 440V 415V 400V 380V Applicable Motor 125% Braking Torque/ 10%ED Braking Unit Part No. and Quantity Braking Resistors Part No. and Quantity a Wiring Examples of Braking Resistors Input voltage setting for VFDB 4110/4160/4185 MASTER/SLAVE SETTING JUMPER 460V 175HP/215HP Input Voltage Setting Factory setting:440V S 460V 300HP DC - DC+ S B2 B1 BR Resistor Value Spec. for Each AC Motor Drive DC - S1 S2 M1 M2 B2 BR O.L. B1 O.L. -(N) B2 B1 BR HP KW Braking Torque (kg-M) O.L. 460V 375HP/425HP + P ( ) VFD Series 460V 250HP 460V 475HP Voltage 460V Operation Explanation: 1.

For safety consideration, install an overload relay between the braking unit and the braking resistor. In conjunction with the magnetic contactor (MC) prior to the drive, it can perform complete protection against abnormality. 2. The purpose of installing the thermal overload relay is to protect the braking resistor from damage due to frequent braking, or due to braking unit keeping operating resulted from unusual high input voltage. Under such circumstance, just turn off the power to prevent damaging the braking resistor. 3. Please refer to the specification of the thermal overload relay. 4.

The alarm output terminals (RA, RC) of the braking unit will be activated when the temperature of the heat sink exceeds C. It means that the temperature of the installation environment may exceed 50 o C, or the braking %ED may exceed 10%ED. With this kind of alarm, please install a fan to force air-cooling or reduce the environment temperature. If the condition isn’t due to the temperature, the control circuit or the temperature sensor may have been damaged. At this time, please send the braking unit back to the manufacturer or agency for repair. 5. The AC Motor Drive and braking unit will be electrified at the same time while turning on the NFB (No-fuse breaker).

For the operation/stop method of the motor, please refer to the user manual of the AC Motor Drives VFD Series. The braking unit will detect the inner DC voltage of the AC motor drive when it stops the motor by deceleration. The extra regeneration will be dissipated away rapidly by the braking resistor in the form of heat. It can ensure the stable deceleration characteristic. 6. Besides using thermal overload relay to be the protection system and braking resistor, temperature switch can be installed on braking resistor side as the protection.

The temperature switch must comply with the braking resistor specification or contact your Do not proceed with wiring while power is applied to the circuit. The wiring gauge and distance must comply with the electrical code. The +(P), -(N) terminals of the AC motor drive (VFD Series), connected to the braking unit (VFDB), must be confirmed for correct polarity lest the drive and the braking unit be damaged when power on. When the braking unit performs braking, the wires connected to DC+, DC-, B1 and B2 would generate a powerful electromagnetic field for a moment due to high current passing through.

These wires should be wired separately from other low voltage control circuits lest they make interference or mis-operation. To prevent personal injury, do not connect/disconnect wires or regulate the setting of the braking unit while power on. Do not touch the terminals of related wiring and any component on PCB lest users be damaged by extreme dangerous DC high voltage. „ Do not connect DC reactor between the braking unit and the DC-bus capacitor of the AC motor driver. „ Wiring distance „ braking resistor had better be installed in individual metallic box with forced air-cooling. „ leads +(P), -(N).

„ Please install the braking resistor with forced air-cooling or the equivalent when frequent deceleration braking is performed (over 10%ED). „ The ring terminals are suggested to be used for main circuit wiring. Make sure the terminals are fastened before power on. ^ Definition for Braking Usage ED% Explanation: The definition of the barking usage ED(%) is for assurance of enough time for the braking unit and braking resistor to dissipate away heat generated by braking. When the braking resistor heats up, the resistance would increase with temperature, and braking torque would decrease accordingly. 1. Regulation of power voltage:

the power source of the braking unit is DC voltage from +(P), -(N) terminals of the AC motor drive. It is very important to set the power voltage of the braking unit based on the input power of the AC motor drive before operation. The setting has a great influence on the potential of the operation voltage for the braking unit. Please refer to the table below. NOTE „ Before regulating the power voltage, make sure the power has been turned off. Please set power voltage as the possible highest voltage for unstable power system. Take 380VAC power system for example. If the voltage may be up to 410Vac, 415VAC should be regulated.

„ For DELTA’s AC motor drive VFD Series, please set parameter (Over Voltage Stall Prevention) as “close” to disable over-voltage stall prevention, to ensure stable deceleration characteristic. The Selection of Power Voltage and Operation Potential of PN DC Voltage NOTE: Input Power With Tolerance ±10% 460V Model AC Power Voltage Braking Start-up voltage DC Bus (DC+,DC-) Voltage ED% = T1/T0x100(%) 380Vac 618Vdc 400Vac 642Vdc 415Vac 667Vdc 440Vac 690Vdc 460Vac 725Vdc 480Vac 750Vdc Brake Resistor Temperature switch Thermal Overload Relay BR O.L.

T0 \ Basic Wiring Diagram Motor U/T1 V/T2 W/T3 IM VFDB B1 Brake Unit B2 T1 Braking Time Cycle Time DC+ DC- RA RC _ The Voltage Settings VFD Series +(P) -(N) E.F DCM 100% R/L1 S/L2 T/L3 MC VFDB Series Braking Modules Instruction Sheet Specification 460V Series Model no. Specification Power Charge Display Blackout until bus(DC+~DC-)voltage is below 100VDC Z Dimensions -Braking Resistors Z Dimensions - VFDB Braking Units [ Individual Parts and Function Explanation Thank you for choosing DELTA’s braking module. VFDB braking units are applied to absorb the motor regeneration energy when the three-phase induction motor stops by deceleration.

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