User manual QUANTUM 8181148A02

[. . . ] SDLT 220 and SDLT 320 Design & Integration Guide Copyright Copyright © 2004 by Quantum Corporation. Document Origination: Boulder, Colorado, USA. Trademarks Quantum, the Quantum logo, and the DLTtape logo are trademarks of Quantum Corporation registered in the U. S. A. DLTtape, DLTSage, Value DLTtape, and Super DLTtape are trademarks of Quantum Corporation. Other company and product names used in this document are trademarks, registered trademarks, or service marks of their respective owners. Legal Disclaimers The information contained in this document is the exclusive property of Quantum Corporation. [. . . ] Front Panel LEDs If EnaCleanLight is enabled, the yellow LED illuminates steadily for these conditions: · When a HWE(Hard Write Error)/HRE(Hard Read Error) is encountered, and more than 100 hours have passed since the last cleaning. Once illuminated, the yellow LED stays lit until one of the following occurs: 1) drive is cleaned successfully, or 2) the drive is reset due to a firmware failure or firmware update, or 3) power is cycled off and on. 81-81148-01 March 2004 2-27 CHAPTER 2: General Drive Specifications SDLT 220 and SDLT 320 Design & Integration Guide 2-28 March 2004 81-81148-01 CHAPTER 3 Electrical Specifications 3. 1 Current and Power Requirements Table 3-1 on page 3-3 lists the current and power requirements for both versions of the tape system (internal and tabletop). The highest current (and power) is drawn during the native write modes and backward-read compatibility (BRC) read modes, so they are outlined in Table 3-1 on page 3-3. Standby is measured with the tape loaded and tensioned or untensioned, and Idle is measured with power on with no tape loaded. (The power drawn in these two modes is similar enough that they are listed together. ) Power-up current surges are less than those encountered during motor accelerations, and so are not listed separately. NOTE: In Table 3-1 on page 3-3, the current and DC power values are relevant to the internal drive, while the AC power values are relevant to the tabletop drive. 81-81148-01 March 2004 3-1 CHAPTER 3: Electrical Specifications SDLT 220 and SDLT 320 Design & Integration Guide Mode 5 V Current (A) MaxPk1 MaxRms2 Typ3 12 V Current (A) MaxPk1 MaxRms2 Typ3 DC Power (W) Max4 Typ5 AC Power (W) Max6 Typ7 Standby / Idle Media Loading / Unloading 220/320 Write­ Motor Start8 220/320 Write­ Streaming Max for SDLT Modes9 BRC Read­ Motor Start8 BRC Read­ Streaming Max for BRC Modes9 1. 3. 2 3. 8 6. 1 6. 3 3. 0 3. 1 3. 1 4. 3 4. 3 2. 9 2. 9 3. 0 3. 8 0. 6 4. 8 4. 8 2. 1 0. 5 1. 0 1. 0 0. 7 1. 0 0. 4 0. 7 0. 7 0. 7 20 25 25 28 28 19 24 24 27 34 38 33 42 42 29 33 30 38 3. 9 5. 2 3. 0 3. 3 3. 3 2. 8 3. 1 2. 3 1. 8 0. 7 0. 7 0. 7 0. 6 0. 6 23 24 24 22 22 38 41 41 32 33 The Max-Peak value represents short current spikes drawn for durations of < 50us. On the 12V supply, the peaks correspond to the pulse width modulated switching of the motors. These values are calculated from the average of Peak-ripple-current + 2 sigma, measured at +5% DC voltage. The Max-Rms value is the average of the maximum RMS current drawn during this operating mode. These values are calculated from the average of RMS current + 3 sigma, measured at nominal DC voltage. The typical current is calculated from the average of all RMS current drawn during this operating mode, measured at nominal DC voltage. The Max DC power is calculated from the typical DC power + 3 sigma, measured at nominal DC voltage. This value takes into account that the peak currents on the 5V and 12V do not occur at the same time. The Typical DC power is calculated from the average RMS DC power drawn during this operating mode, measured at nominal DC voltage. This value also takes into account that the peak currents on the 5V and 12V do not occur at the same time. The Max AC power is calculated from the typical AC power in tabletop drives + 3 sigma. The Typical AC power is calculated from the average of AC power drawn in tabletop drives. The motor start modes draw the most current from the 12V supply, so they are shown separately. These events last < 1 second and occur at a duty cycle of less than 25%. The Max values for each mode are based on the Max-rms values, since the peak values are of very short duration. 2. 9. 3-2 March 2004 81-81148-01 SDLT 220 and SDLT 320 Design & Integration Guide CHAPTER 3: Electrical Specifications 3. 2 Power Supply Tolerances One of the functions of the power supply is to transform the AC power to DC, and to step the voltage down from 115/220 Vac to 5 Vdc and 12 Vdc. 3. 2. 1 Voltage Tolerances Voltage tolerances are: · · 5 Vdc ± 5% 12 Vdc ± 5% 3. 2. 2 DC Voltage Monitoring The tape drive will monitor the two input voltages and take protective measures when the voltages fall or rise beyond the below specified ranges: Table 3-1. DC Voltage Monitoring Low Voltage Trip Point 4. 75 Volts 11. 4 Volts Supply Voltage 5 Volt 12 Volt 3. 2. 3 Power Cycle Time Test results show that an SDLT drive is able to power up and perform reliably with up to 11 seconds of delay time between the 5V and the 12V source. The drive is also able to power up and perform successfully with rise times of up to 11 seconds on either the 5V and the 12V supply (while the other is stable). 81-81148-01 March 2004 3-3 CHAPTER 3: Electrical Specifications SDLT 220 and SDLT 320 Design & Integration Guide 3. 2. 4 Supply Transient Voltage Allowable power supply transient voltage is: · · 5 Volt rail ­ 60 mV (peak to peak) 12 Volt rail ­ 1. 6 V (peak to peak). 3-4 March 2004 81-81148-01 CHAPTER 4 Thermal Specifications 4. 1 Over Temperature Condition This chapter presents the results of extensive experimentation and measurements of drive temperatures, and the resultant impact on SDLT 220/320 drive performance. [. . . ] The Drive Status LED blinks as the tape rewinds. When the tape is finished rewinding, the drive ejects the cartridge and the Drive Status LED lights steadily. Do not rush removal of the tape cartridge. Wait until the drive ejects the cartridge and the Drive Status LED lights steadily before removing the cartridge. 2. 3. Remove the cartridge from the drive and return the cartridge to its plastic case to protect the cartridge from damage. 81-81148-01 March 2004 8-7 CHAPTER 8: Insertion and Extraction Guidelines SDLT 220 and SDLT 320 Design & Integration Guide 8. 3. 1 Unload Forces, Placement, and Timing Figure 8-2. [. . . ]