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E-831– E-841– E-842

OEM Piezo Driver and Power Supply Modules

steadystate operation and the power consumption depends on the operating frequency, high-powered amplifiers are not required for many applica- tions. With a peak output cur- rent of 100 mA (sink/source) the E-831 is well-suited forswitching applications and fasttransitions where the capaci- tive load (the piezo actuator) needs to be charged as quickly as possible. The small-signal bandwidth is about 3 kHz. Power Supplies for E-831.02 Easy Implementation Triple Safety
Ordering Information The E-841.05 (input voltagerange 10 to 30V) and E-842.05 (input voltage range 30 V to 72 V) switched power supply modules provide all the operat- ing voltages (±15 V, -26 V and +127 V DC) required by the E-831.02 amplifier module.Both models supply enough power for up to three E-831.02 amplifiers with a total output power of 5 W.A sync. input on the powersupply allows synchronizationof the internal switching fre-quency with an external clock (185 to 220 kHz) for elimination of interference in AC-driven position sensors or DACs. E-831 and E-841/E-842 modulesare enclosed in metal cases with solderable pins for PCB mounting. They are designed to work together without addi- tional components. The E-831 amplifier is short-cir-cuit proof with both a low- speed current limiter of 50 mA and a high-speed (8 msec) cur- rent limiter of 100 mA. When the case temperature risesabove 70 °C (can be reachedafter a few minutes with maxi- mum current) an internal tem- perature sensor shuts down
E-831.02 Single-Channel Piezo Driver Module for LVPZTs E-841.05 Power Supply Module for E-831,Input 10 to 30 V E-842.05 Power Supply Module for E-831, Input 30 to 72 V the output stage until the tem- perature drops below 60 °C. This operation mode is in-dicated by the active-highTEMP-OFL TTL status line.
E-831.02 amplifier module. Cost Effective Piezo Driver Small Size Low Noise, High Stability Easy-to-Use Full Overcurrent, Short-Circuit and Temperature Protection Power-up/down Without Voltage Spikes The E-831.02 OEM piezo drivermodule is a very compact, cost-effective, single-channel,4-quadrant power amplifier forlow-voltage piezoelectric actu- ators (LVPZTs).It provides a peak outputpower of 12 W and average power of 2 W (expandable to 5 W with external heat sink). The E-831.02 is a high-preci-sion amplifier with a fixed gainof 10.0 and outputs voltages in the range of -20 to 120 V forcontrol input signals ranging from of -2 to 12 V. The output isfully compensated for thecapacitive loads of up to 10 µF typical of PI’s low-voltage PZTs such as PICMA
® piezo actua-tors. For monitoring purposes, the output voltage is internally divided by 100 and provided at a special monitor pin.Because piezo actuators re-quire virtually no power in
E-841.05 power supply module © PI 1998-2005. Subject to change w/o notice. Cat 118 05/09.17 6-42