KEPCO HSM 12-84 Operator'S Manual Download Page 2 | Manualshive

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Summary of Contents for HSM 12-84

Page 1: ...n New York 718 461 7000 requesting the correct revision for your particular model and serial number 3 The contents of this manual are protected by copyright Reproduction of any part can be made only w...

Page 2: ......

Page 3: ...7 Wiring Instructions 2 4 2 7 1 Safety Grounding 2 4 2 7 2 Source Power Connections 2 4 2 7 3 D C Output Grounding 2 5 2 7 4 Power Supply Load Interface 2 5 2 7 5 Load Connection General 2 6 2 7 5 1 L...

Page 4: ...d II Remote Error Sensing 2 8 2 5 Load Connection Method III Series Connection 2 9 2 6 Load Connection Method IV Parallel Redundant Operation wit Hot Swap 2 10 3 1 External Resistance Programming of O...

Page 5: ......

Page 6: ...iii Blank iv HSMSERIES OPR 052912 FIGURE 1 1 HSM SERIES POWER SUPPLY...

Page 7: ...ilures fault detection circuitry monitors performance of the output and critical internal functions providing both visual and electrical indi cators A switch selectable current walk in circuit and opt...

Page 8: ...output conditions may result in increased output ripple and increased transient response recovery time Output Voltage Range See Table 1 1 Regulation Error Source Effect 0 1 over full source voltage ra...

Page 9: ...AR 3 11 Voltage Set Programming Mode selected by internal switches See Note 6 See PAR 3 3 Internal Multiturn pot External 1 Resistance 0 50K External 2 0 10V 500 A max Current Limit Programming Intern...

Page 10: ...1 4 HSMSERIES OPR 052912 FIGURE 1 3 OUTLINE DRAWING...

Page 11: ...gnals which display programmed output voltage and current limit values These signals are available at the I O connector VSET and ISET Signals are referenced to negative error sense see PAR 3 7 1 4 4 R...

Page 12: ...er must provide wiring and heat sink One diode required for each power supply See PAR 2 7 5 3 May also be used as optional external blocking diode for redundant applications See PAR 2 7 5 4 124 0601 U...

Page 13: ...ATIONS AND CONTROLS a Output and Configuration Controls Refer to Figure 2 1 and Table 2 1 b Rear Panel Refer to Figure 2 2 and Table 2 2 FIGURE 2 1 HSM SERIES OUTPUT CONTROLS AND CONFIGURATION SWITCH...

Page 14: ...NPUT VOLTAGE 0 10V SEE NOTE 3 3 3 19 S NEGATIVE ERROR SENSE INPUT 2 7 5 20 X NO CONNECTION 21 FFS 2 FAN STATUS NORMALLY OPEN CONTACT 3 14 22 FFS C FAN STATUS COMMON CONTACT 3 14 23 ACS 1 SOURCE POWER...

Page 15: ...s 1 THE POWER SUPPLY WILL NOT OPERATE UNLESS THE REMOTE SENSE LINES ARE PROPERLY CONNECTED TO THE OUTPUT TERMINALS Connect the remote sense ter minals to the output bus bars using the mating I O Conne...

Page 16: ...al as the interface between other types of electronic equip ment If optimum performance is expected certain rules for the interconnection of source power supply and load must be observed by the user T...

Page 17: ...lection requires a combination of analysis good judgement and some amount of empirical testing If there is a choice in selecting either the positive or negative output of the power supply for the d c...

Page 18: ...compensate for reactive effects due to this These dynamic conditions are especially important if the load is constantly modulated or step programmed or has primarily reactive characteristics or where...

Page 19: ...pply output the regulation loop is essentially unaffected by the impedances presented by the load interconnec tion scheme The main disadvantage is that it cannot compensate for losses introduced by th...

Page 20: ...als directly to the load will compensate for voltage drops in the load interconnection scheme see Specifications for available headroom based on model the termination point of the error sensing leads...

Page 21: ...his is NOT the same as the blocking diode used for parallel redundant operation Selection of the clamping diode is entirely dependent upon output volt age current parameters The clamping diode must be...

Page 22: ...or output blocking diodes and utilize active current sharing circuitry to distribute the load current equally among the paralleled units Redundant operation is achieved by paralleling one or more powe...

Page 23: ...nearly as possible emulate a single large power supply To this end the following rules apply a If possible remote error sensing should be employed with all error sensing connections ter minated at th...

Page 24: ...n ments it is recommended that a shielded cable be used with the shield terminated to the sys tem s single point ground a Remote Error Sense Twist positive and negative error sensing lines pins 37 19...

Page 25: ...up to 0 25V drop in each power lead 0 5V total while 12V through 48V models provide for up to 0 8V drop in each lead 1 6V total The remote error sense leads must be connected to the output power termi...

Page 26: ...0 2 or for limiting the maximum programmable voltage Operation of range selector is as follows a High Range This is the factory set default mode the maximum programmable output volt age is 110 of nom...

Page 27: ...AR 3 5 for precise limit adjustment or for limiting the maximum programmable current limit Operation of the range selector is as follows a High Range This is the factory set default mode the maximum p...

Page 28: ...ip level is preset at the factory for 130 of the nominal output voltage see Table 1 1 however this level can be adjusted from 100 to 140 of the nominal output except Model HSM 48 21 which can be adjus...

Page 29: ...ge this operating mode is maintained indefinitely and recovery to voltage regulation mode is automatic upon reduction of the output current below the current limit point This mode is ideal for high po...

Page 30: ...URRENT WALK IN CHARACTERISTIC 3 11 5VAUX FLOATING SUPPLY HSM power supplies are equipped with an internal auxiliary supply which provides 5V at loads up to 100mA It is derived from the internal coolin...

Page 31: ...es results in an immediate shutdown of the output PWM regulator including reset of the soft start undervoltage and current walk in circuits Operation is inhibited until the appropriate control line is...

Page 32: ...ilable to sustain rated output for normal operation These signals indicate a fault condition until the bulk voltage is greater than 390V d c Once the bulk voltage reaches 390V d c indicating that the...

Page 33: ...ying less than 70 of the current required by the circuit as indicated by the load sharing signal while the output voltage is within specification limits A fault condition is not generated for a combin...

Page 34: ...nerated in the event that either the input or output module heatsink temperature rises above a safe operating level output regulator shutdown occurs simultaneously Recovery occurs automatically upon r...

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