Advanced motion controls b25a40ac
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The B25A40AC series brushless servo amplifiers are small, low-cost devices that can operate from a single-phase or three-phase AC power supply. They are designed to drive brushless DC motors at high switching frequencies and include protections against over-voltage, under-voltage, over-current, over-heating, and short-circuits. The amplifiers can interface with a digital controller or operate in a stand-alone mode, and include adjustable parameters and an input for testing purposes.
Advanced motion controls b25a40ac
- 1. Advanced Motion Controls - B25A40AC Series C-39 B25A40AC SERIES BRUSHLESS SERVO AMPLIFIERS Model: B25A40AC 1∅ or 3∅ VAC SUPPLY OPERATION FEATURES: * Surface-mount technology * Small size, low cost, ease of use * Built in input signal isolation and shunt regulator * DIP switch selectable modes: current, open loop, analog tachometer, Hall velocity and encoder velocity * Four quadrant regenerative operation Sold & Serviced By: ELECTROMATE Toll Free Phone (877) SERVO98 Toll Free Fax (877) SERV099 www.electromate.com sales@electromate.com
- 2. Advanced Motion Controls - B25A40AC Series DESCRIPTION: B25A40AC Series PWM servo amplifiers are designed to drive brushless DC motors at a high switching frequency. This model is fully protected against over-voltage, under-voltage, over-current, over-heating and short-circuits. This model interfaces with a digital controller or can be used as stand-alone drive. The B25A40AC requires only a 1? or 3? AC power supply. A single red/green LED and a single digital output indicate operating status. Loop gain, current limit, input gain and offset can be adjusted using 14-turn potentiometers. The offset adjusting potentiometer can also be used as an on-board input signal for testing purposes when SW1 (DIP switch) is ON. Sold & Serviced By: ELECTROMATE Toll Free Phone (877) SERVO98 Toll Free Fax (877) SERV099 www.electromate.com sales@electromate.com
- 3. Advanced Motion Controls - B25A40AC Series C-41 All B25A40AC specifications are identical to the B25A40 specifications (see page C-34) except for: MODEL POWER STAGE SPECIFICATIONS B25A40AC AC SUPPLY VOLTAGE 85-270 VAC @ 50 - 60 Hz SHUNT SWITCH-ON VOLTAGE* 390 VDC SHUNT RESISTOR 20 Ω @ 100 W SHUNT FUSE (d=.25 inches, L=1.25 inches) 3 A Motor Delay rated @ 250 VAC AC LINE FUSES (d=.25 inches, L=1.25 inches) 15 A slow-blow rated @ 250 VAC MECHANICAL SPECIFICATIONS POWER CONNECTOR Screw terminals SIGNAL CONNECTOR Molex connector SIZE x 6.35 x 3.43 inches 203.2 x 161.3 x 87.2 mm WEIGHT lb. 2.18 kg * If the shunt regulator is disabled the shut down voltage is 420 VDC. These amplifiers contain a rectifier bridge and filter capacitors to generate the DC bus internally from the AC input power. The DC bus voltage is 1.4 times AC voltage (RMS), e.g. 310 VDC from 220 VAC. During braking much of the stored mechanical energy is fed back into the power supply and charges the output capacitor to a higher voltage. If the charge reaches the amplifier's over-voltage shutdown point, output current and braking will cease. To ensure smooth braking of large inertial loads, a built-in "shunt regulator" is provided in the B25A40AC. The shunt regulator will switch-on the internal power resistor when the bus voltage reaches 390 VDC. This resistor then dissipates the extra energy of the DC bus to the case. If the temperature of the case rises above 65 ?C, a thermal switch will disable the shunt regulator. As a result, the amplifier will operate without the shunt regulator and the over voltage protection on the amplifier will disable the drive if the regeneration energy causes the bus voltage to exceed 420 VDC. ORDERING INFORMATION Models: B25A40ACX X indicates the current revision letter. TYPICAL SYSTEM WIRING: See section "G". MOUNTING DIMENSIONS: Sold & Serviced By: ELECTROMATE Toll Free Phone (877) SERVO98 Toll Free Fax (877) SERV099 www.electromate.com sales@electromate.com
- 4. Advanced Motion Controls - B25A40AC Series Sold & Serviced By: ELECTROMATE C-42 Toll Free Phone (877) SERVO98 Toll Free Fax (877) SERV099 www.electromate.com sales@electromate.com