srst400
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SHUNT REGULATORS Shunt Regulators The SRST Series shunt regulator assemblies are designed to work with ADVANCED Motion Controls’ four quadrant regenerative servo drives. During braking most of the stored mechanical energy is fed back into the power supply, which charges the output capacitor to a higher voltage. If the charge reaches the drive’s over-voltage shutdown point, motor control and braking will cease. To ensure smooth braking of large inertial loads the use of a shuntregulator is recommended. Verify the need for a shunt regulator by operating the drive under the worst case braking condition. If the drive shuts off due to over-voltage (blinking red LED) a shunt regulator is necessary (typically during downward move or deceleration). Model Number Rated Dissipation Capability Clamping Voltage SRST50 95 W 50 VDC SRST70 95 W 70 VDC SRST80 95 W 80 VDC SRST90 95 W 90 VDC SRST175 95 W 175 VDC SRST185 95 W 185 VDC SRST380 190 W 380 VDC SRST400 190 W 400 VDC SRST50, 70, 80, 90, 175, 185 SRST380, 400 Operation Features When the DC Bus reaches the shunt voltage of the shunt regulator assembly, the voltage comparator unit turns on the electronic switch, which connects the R1 power resistor across the DC Bus. This power resistor dissipates the energy from the DC Bus. After the bus voltage is reduced to less than the shunt voltage setting the resistor is disconnected from the bus. A small hysterisis loop allows time between switching. The SRST assemblies are available with standard shunt voltages of 50, 70, 80, 90, 175, 185, 380, and 400 volts. Models SRST50, 70, 80, 90, 175, 185 are designed for use with servo drives up to 200 volts. These models have a 200 VDC, 1200 μF filter capacitor in them. Models SRST380 and SRST400 are designed for use with servo drives up to 400 volts. These models have a 450 VDC, 330 μF filter capacitor in them. Dissipates Excess Kinetic or Potential Energy to Prevent Drive Over-Voltage Shut Down Small Size, Low Cost, Ease of Use Agency Approvals US and Canadian safety compliance with UL 508c, the industrial standard for power conversion electronics. UL registered under file number E140173. Note that machine components compliant with UL are considered UL registered as opposed to UL listed, as would be the case for commercial products. Compliant with European CE for both the Class A EMC Directive 2004/108/EC on Electromagnetic Compatibility (specifically EN 61000-6-4:2007 and EN 61000-62:2005) and LVD requirements of directive 2006/95/EC (specifically EN 60204-1:2006), a low voltage directive to protect users from electrical shock. Contact factory for custom trip voltages. RoHS (Reduction of Hazardous Substances) is intended to prevent hazardous substances such as lead from being manufactured in electrical and electronic equipment. Release Date: 5/4/2012 Revision: 2.01 ADVANCED Motion Controls · 3805 Calle Tecate, Camarillo, CA, 93012 ph# 805-389-1935 · fx# 805-389-1165· www.a-m-c.com Page 1 of 4

SHUNT REGULATORS SPECIFICATIONS Power Specifications Description Units Fuse For Shunt Voltages Under 200 V 1 For Shunt Voltages Over 200 V 3 A Motor Delay rated @ 250 VAC 1200 330 Dissipation Capabilities μF W 95 190 Resistance (R1) Ω 5 20 Filter Capacitance (C1) Mechanical Specifications Description Size (H x W x D) Units 2 mm (in) Weight For Shunt Voltages Under 200 V 203.2 x 108.0 x 66.70 (8.00 x 4.25 x 2.63) kg (lbs) For Shunt Voltages Over 200 V 203.2 x 108.0 x 54.0 (8.00 x 4.25 x 2.13) 0.14 (0.32) 0.21 (0.46) Notes 1. 2. Filter capacitance will add to existing DC Bus capacitance....

Release Date: 5/4/2012 Revision: 2.01 ADVANCED Motion Controls · 3805 Calle Tecate, Camarillo, CA, 93012 ph# 805-389-1935 · fx# 805-389-1165· www.a-m-c.com NOTES 1. DIMENSIONS IN [ ] ARE IN MM. 1.90 [48.31] FOR UNITS OVER A 200V TRIP VOLTAGE FOR UNITS UNDER A 200V TRIP VOLTAGE, AND 2. HIGHEST POINT IS 2.30 [58.47] BASE PLATE SURFACE. 3. HIGHEST POINT IN REFERENCE FROM 0.81 [20.62] 0.17 [4.37] 0.25 [6.35] 0.17 [4.37] 4.25 [107.95] 2X FULL R. 2X 0.22 [5.54] SYM SRST SERIES 7.50 [190.50] 7.66 [194.46] 8.00 [203.20] UPDATED BASE PLATE TO CURRENT MOUNTING CONFIGURATION NTS 02/25/97 02/19/02...

SHUNT REGULATORS CUSTOMIZATION INFORMATION ADVANCED Motion Controls’ products are available in many configurations. All models listed in the selection tables of the website are readily available, standard product offerings. ADVANCED Motion Controls also has the capability to promptly develop and deliver specified products for OEMs with volume requests. Our Applications and Engineering Departments will work closely with your design team through all stages of development in order to provide the best servo drive solution for your system. Equipped with on-site manufacturing for quickturn...