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Summary of Contents for Wilcoxon WST7B3
- Page 1 WST7B power amplifier Operating guide Wilcoxon Sensing Technologies Tel: +1 (301) 330-8811 8435 Progress Drive, Frederick MD 21701, USA Tel: +1 800 WILCOXON Fax: +1 (301) 330-8873 Amphenol (Maryland), Inc d/b/a Wilcoxon Sensing Technologies www.wilcoxon.com 97042 Rev A 11/21...
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Page 2: Table Of Contents
Contents Safety section Safety summary 1.0 Product description 1.1 Front panel 1.2 Rear panel 2.0 Operation of the power amplifier 2.1 Using the power amplifier with an electromagnetic shaker 2.2 Using the power amplifier with a piezoelectric shaker 2.3 Matching networks 3.0 Initial system setup 3.1 AC line power 3.2 Signal input... -
Page 3: Safety Section
WARNING: OPERATION OF THIS AMPLIFIER IS SAFE WHEN THE INSTRUCTIONS IN THIS MANUAL ARE READ THOROUGHLY BEFORE THIS SYSTEM IS CONNECTED TO ELECTRICAL POWER. PARTICULAR ATTENTION MUST BE PAID TO THE SAFETY SECTION OF THIS MANUAL. IT IS THE ULTIMATE RESPONSIBILITY OF THE USER TO SAFELY SET UP, OPERATE AND MAINTAIN THE SYSTEM. -
Page 4: Safety Summary
4. To reduce the risk of electric shock, do not remove the power amplifier cover. No user-serviceable parts are inside. Refer all servicing issues to Wilcoxon Sensing Technologies. 5. Do not attempt to operate a power amplifier without the protective covers secured. -
Page 5: Product Description
The WST7B develops a maximum of 900 watts of power into a 4 Ohm load. The amplifier will drive the full range of Wilcoxon shakers, with the ability to drive the larger shakers to the full performance limits of the shakers. - Page 6 1.1.2 Power indicator: The WST7B has an LED indicator above the power switch to monitor the following conditions: POWER UP SEQUENCE – After pushing the power switch, the LED will turn from unlit to red (mute). When the power supply has stabilized, the amplifier will come out of mute and the LED will change to green (normal operation).
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Page 7: Rear Panel
1.2 Rear Panel 1.2.1 Connecting to AC power: Please check the Data Plate on the right rear of the amplifier to verify power requirements agree with your location. Before plugging in the power cord, make sure the Mast Circuit Breaker is switched to the “ON” position. Plug the IEC-320 C14 end of the power cord into the amplifier, then plug the other end into an approved and grounded AC receptacle. -
Page 8: Operation Of The Power Amplifier
2.0 Operation of the power amplifier Wilcoxon Sensing Technologies manufactures a comprehensive line of vibration generating systems, including electromagnetic and piezoelectric shakers. Electromagnetic shakers are powered directly from the output of the power amplifier. However, piezoelectric shakers require a matching network between the power amplifier and the shaker. -
Page 9: Using The Power Amplifier With A Piezoelectric Shaker
The power amplifier will drive piezoelectric shakers but must have a matching network between the power amplifier and the shaker for full output. CAUTION: In these modes of operation power amplifier must be used with a Wilcoxon matching network. Do not attempt to operate the power amplifier without the appropriate matching network. - Page 10 displacement proportional to the voltage input for frequencies below its resonance. Therefore, in order to get maximum displacement and consequently maximum acceleration levels at low frequencies, the voltage must be stepped up significantly. The impedance matching network normally consists of a step-up transformer and an output tap switching arrangement.
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Page 11: Initial System Setup
All Wilcoxon shakers except the F7-1 piezoelectric shaker are standardized for use with the Wilcoxon PA10A power amplifier and include the cables necessary to do so. Make sure you request the proper cables if you are using the WST7B power amplifier. -
Page 12: Operation
Table 1 – Interconnecting cables Standard cable Optional cable Matching Standard cable Optional cable Shaker connecting to connecting to network connecting to connecting to shaker model matching matching shaker (all but F7- (for use w/ WST7B network (all but network (for use 1 standardized for F7-1 standardized w/ WST7B... - Page 13 Turn off the power, repeat the steps in the initial system setup (section 3.0) then re-apply power. If the fault persists, contact Wilcoxon Sensing Technologies. The LED, when unlit, indicates no AC mains power is present and the amplifier probably needs only to be powered on or the rear panel circuit breaker is switched off.
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Page 14: Test Operation
required The WST7B has thermal shutdown circuitry to prevent damage due to overheating. Should thermal shutdown occur, the amplifier will mute and the LED will turn orange – indicating this condition. When the amplifier has cooled to a safe operating condition the WST7B will return to normal operation. -
Page 15: Maintenance
Consult the matching network’s manual for details. CAUTION: The power amplifier contains no user serviceable components. Service or repair of the power amplifier should not be attempted by anyone other than Wilcoxon Sensing Technologies employees or designated representatives. Page 15 of 16... -
Page 16: Technical Assistance
6.0 Technical assistance 6.1 Technical assistance For technical assistance, please contact Wilcoxon Sensing Technologies customer service at 301-330-8811 or email info@wilcoxon.com. 6.2 Customer service using ‘RMA request’ in the To obtain a return materials authorization number, please email info@wilcoxon.com subject line. Please provide return contact information including name and phone number or contact customer service directly at 301-330-8811.
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