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Ametek Sorensen SGA Series Operation Manual
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Ametek Sorensen SGA Series Operation Manual

Ametek Sorensen SGA Series Operation Manual

Dc power supplies
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SGA Series
DC Power Supplies
Operation Manual
M550129-01 Rev T
www.programmablepower.com
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  • Page 1 SGA Series DC Power Supplies Operation Manual M550129-01 Rev T www.programmablepower.com www.valuetronics.com...
  • Page 2 www.valuetronics.com...
  • Page 3 About AMETEK AMETEK Programmable Power, I nc., a Division of AMETEK, I nc., is a global leader in the design and manufacture of precision, programmable power supplies for R&D, test and measurement, process control, power bus simulation and power conditioning applications across diverse industrial segments.
  • Page 4 This page intentionally left blank. www.valuetronics.com...
  • Page 5 Neither AMETEK Programmable Power Inc., San Diego, California, USA, nor any of the subsidiary sales organizations can accept any responsibility for personnel, material or inconsequential injury, loss or damage that results from improper use of the equipment and accessories.
  • Page 6 This page intentionally left blank. www.valuetronics.com...
  • Page 7 AMETEK will, at its expense, deliver the repaired or replaced Product or parts to the Buyer. Any warranty of AMETEK will not apply if the Buyer is in default under the Purchase Order Agreement or where the Product or any part thereof: •...
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  • Page 9 FCC NOTICE This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications.
  • Page 10 ABOUT THIS MANUAL This manual has been written expressly for the Sorensen SGA Series of power supplies that have been designed and certified to meet the Low Voltage and Electromagnetic Compatibility Directive Requirements of the European Community. Since the Low Voltage Directive is to ensure the safety of the equipment...
  • Page 11 CON T EN T S SECT I ON 1 OV ERV I EW .......... 1 -1 General Description................1-1 Specifications ..................1-1 1.2.1 Environmental Characteristics ............1-2 1.2.2 Electrical Characteristics..............1-2 1.2.3 SGA Series Voltage and Current Specifications ........ 1-4 1.2.4 Physical Characteristics..............
  • Page 12 Overview Sorensen SGA Series 3.2.1 Front Panel..................3-1 3.2.2 Shaft Lock (Option) ................3-6 Local Operation..................3-7 3.3.1 Floating and Polarized Output............3-7 3.3.2 Initial Setup..................3-8 3.3.3 Voltage Mode Operation ..............3-8 3.3.4 Current Mode Operation..............3-9 3.3.5 Overvoltage Protection..............3-10 3.3.6 Analog Control Connector (J1) ............3-11 Remote Current Programming ............3-15...
  • Page 13 Sorensen SGA Series Overview 4.3.1 Current Mode ..................4-6 4.3.2 Voltage Mode..................4-7 4.3.3 Change Calibration Date..............4-8 SECT I ON 5 M AI N T EN AN CE ........5 -1 Introduction................... 5-1 Preventive Maintenance ............... 5-1 Fuses....................5-3 LI ST OF T ABLES Table 2–1.
  • Page 14 Overview Sorensen SGA Series Figure 3-12. Remote Voltage Programming Using 0-5 VDC or 0-10 VDC Voltage Source ....................3-18 Figure 3-13. Local/Remote Voltage Sensing .............. 3-19 Figure 3-14. Remote Sensing Operation at the Load ..........3-20 Figure 3-15. Remote Output ON/OFFControl by Contact Closure ......3-21 Figure 3-16.
  • Page 15 OV ERV I EW GEN ERAL DESCRI PT I ON 1 .1 The Sorensen SGA Series power supplies are general–purpose power supplies designed specifically for laboratory test and systems applications requiring variable DC sources with good ripple and regulation characteristics. These power supplies are constant current/constant voltage supplies with an automatic crossover feature.
  • Page 16 Overview Sorensen SGA Series N ot e : Specifications are subject to change without notice. N ot e : The SGA Series power supplies are intended for indoor use only. Please refer to Section 2.3 for use/location requirements. 1 .2 .1 EN V I RON M EN T AL CH ARACT ERI ST I CS...
  • Page 17 Sorensen SGA Series Overview Parameter Specification Line Regulation (Specified ±10% of nominal AC input, constant load) Voltage 0.01% of maximum output voltage Current 0.05% of maximum output current A 50% step load will recover to within 0.75% of original value Transient Response within 1 ms.
  • Page 18 Overview Sorensen SGA Series Parameter Specification ISOLATED ANALOG CONTROL (OPTION) 600 V Compliant with maximum terminal float voltage. Recommended Input to Output Isolation operation under SELV normal conditions. (Standard non-isolated analog programming 300V maximum. Recommended operation under SELV normal conditions) 1 .2 .3 SGA SERI ES V OLT AGE AN D CU RREN T SPECI FI CAT I ON S...
  • Page 19 Sorensen SGA Series Overview 1 .2 .4 PH Y SI CAL CH ARACT ERI ST I CS Dimension 3U Models 6U Models Width 19.00 in (48.3 cm) 19.00 in (48.3 cm) Depth 25.46 in (64.7 cm) 27.06 in (63.8 cm) Height 5.25 in (13.3 cm)
  • Page 20 Overview Sorensen SGA Series This page intentionally left blank. M550129-01 Rev T www.valuetronics.com...
  • Page 21 At a minimum, the ship kit that accompanies your SGA Series power supply includes the following items: • AMETEK Manuals CD-ROM, Part No. M550008-01, containing this manual, SGA Series DC Power Supplies Operation Manual (Part No. M550129-01) and the SG Series IEEE 488.2/RS232 Option and Ethernet Option Programming Manual (Part No.
  • Page 22 Installation Sorensen SGA Series • Bolt, lock washer, and nut for output power connections: 20–30 kW: 3/8-16UNC-2B x 1/4", 4 ea for AC input 3/8-16UNC-2B x 3/8”, 2 ea for DC output • Black screw, 10-32UNC-2B x ½", front panel rack fastener: 5–15 kW: 4 ea...
  • Page 23 Sorensen SGA Series Installation 2 .3 .1 RACK The SGA Series models are designed for mounting in a standard 19-inch equipment rack. If additional instrumentation is mounted in the rack, no additional clearance is required above or below units in the SGA Series.
  • Page 24 Installation Sorensen SGA Series For permanently connected equipment, incorporate a readily accessible disconnect device in the fixed wiring. For pluggable equipment, install the socket outlet near the equipment and in an easily accessible location. Table 2–1 lists all external connections for the SGA Series models. Table 2–2 and Table 2–3 provide input and output connection descriptions by...
  • Page 25 Sorensen SGA Series Installation Power Supply Type Connection Description 5 kW to 15 kW Feed through high current terminal block 20 kW to 30 kW Bus Bar with holes for 1/4"–20 bolts Table 2–2. Input Connections Power Supply Type Connection Description 5 kW to 15 kW Bus Bar with holes for 3/8"...
  • Page 26 Installation Sorensen SGA Series WI RE SELECT I ON 2 .5 Care must be taken to properly size all conductors for the input and output of the power supply. This section provides guidance in the selection of wire size. Note that cables with Class B or C stranding should be used.
  • Page 27 Sorensen SGA Series Installation When determining the optimum cable specification for your power applications, the same engineering rules apply whether going into or out of an electrical device. Thus, this guide applies equally to the input cable and output cable for this Sorensen instrument and application loads.
  • Page 28 Installation Sorensen SGA Series Input Line Current Unit of Input V Measure 5 kW 10 kW 15 kW 20 kW 25 kW 30kW 200-240VAC Amps AC 360-440VAC per phase 480VAC Table 2–6. Maximum AC Current Ratings Refer to Table 2–7 for input/output lug recommendations.
  • Page 29 Sorensen SGA Series Installation LOAD CON SI DERAT I ON S 2 .6 This section provides guidelines for using properly rated diodes to protect the power supply from damage while driving inductive loads. 2 .6 .1 I N DU CT I V E LOADS To prevent damage to the power supply from inductive kickback, connect a diode (rated at greater than the supply’s output voltage and current)
  • Page 30 Installation Sorensen SGA Series Figure 2-2. SGA Dimensions, 3U Model, 5kW to 15kW 2-10 M550129-01 Rev T www.valuetronics.com...
  • Page 31 Sorensen SGA Series Installation Figure 2-3. SGA Dimensions, 6U Models, 20kW to 30kW M550129-01 Rev T 2-11 www.valuetronics.com...
  • Page 32 Installation Sorensen SGA Series I N ST ALLAT I ON DRAWI N GS 2 .8 Figure 2-4. Rear Panel Input-Output Connector Locations 2-12 M550129-01 Rev T www.valuetronics.com...
  • Page 33 Sorensen SGA Series Installation Figure 2-5. SGA Detailed Chassis Dimensions for Installation M550129-01 Rev T 2-13 www.valuetronics.com...
  • Page 34 Installation Sorensen SGA Series This page intentionally left blank 2-14 M550129-01 Rev T www.valuetronics.com...
  • Page 35 SECT I ON 3 OPERAT I ON I N T RODU CT I ON 3 .1 The SGA series provides simplicity and ease of analog front panel potentiometer controls. LED screens display bright, easy-to-read voltage and current output measurements. This section provides detailed information on the operation of the SGA series.
  • Page 36 Operation Sorensen SGA Series Figure 3-1. SGA Front Panel Controls and Indicators (3U model shown) Two–position switch enables or disables the power supply. ON/OFF Switch WARNING: OFF does not remove voltage from the input terminal blocks. Remove external power before servicing the unit.
  • Page 37 Sorensen SGA Series Operation Figure 3-2. SG Rear Panel with GPIB Option RS232 Connector Connector for remote control J3 Input connector for load voltage sensing to correct for SENSE Connector line drops in the load cables (see Section 3.6). ANALOG CONTROL...
  • Page 38 Operation Sorensen SGA Series Figure 3-3. SG Rear Panel with Ethernet Option ETHERNET Connector Connector for remote control via Ethernet. RS232 Connector Connector for remote control ANALOG CONTROL J1 I/O connector for input programming and analog output monitoring signals as well as status indication and remote shutdown signals.
  • Page 39 Sorensen SGA Series Operation Figure 3-4. SGA 6U Rear Panel with GPIB/RS232 Option Connectors ANALOG CONTROL J1 I/O connector for input programming and analog output monitoring signals as well as status indication and remote shutdown signals. See Table 3–1 for individual pin descriptions.
  • Page 40 Operation Sorensen SGA Series 3 .2 .2 SH AFT LOCK (OPT I ON ) This option replaces the standard control knobs with a two-piece shaft lock. These are installed over the voltage and current adjustment potentiometer shafts to prevent rotating under conditions of shock, vibration, or accidental contact.
  • Page 41 Sorensen SGA Series Operation LOCAL OPERAT I ON 3 .3 The SGA Series power supply is shipped from the factory configured for local voltage/current control and local voltage sensing. The ANALOG CONTROL connector is supplied with a mating connector with remote output ON/OFF jumpered for ON (terminal 5 shorted to terminal 6).
  • Page 42 Operation Sorensen SGA Series 3 .3 .2 I N I T I AL SET U P 1. Before connecting the unit to an AC outlet, ensure that the front panel ON/OFF power switch is in the OFF position. 2. Ensure that the Voltage and Current control knobs are fully counterclockwise.
  • Page 43 Sorensen SGA Series Operation 3 .3 .4 CU RREN T M ODE OPERAT I ON When the supply is in the Current Mode, the output current of the supply is controlled by the Current knob on the front panel or by the remote current input (see Section 3.4).
  • Page 44 Operation Sorensen SGA Series 3 .3 .5 OV ERV OLT AGE PROT ECT I ON The Overvoltage Protection (OVP) function allows the supply to shutdown the output when it exceeds a preset voltage. This may be used to protect sensitive circuits or loads from damage caused by an excessive voltage on the output of the supply.
  • Page 45 Sorensen SGA Series Operation 3 .3 .6 AN ALOG CON T ROL CON N ECT OR (J 1 ) The ANALOG CONTROL connector on the rear panel allows the unit to be configured for different operating configurations: local and remote current programming, local and remote voltage programming, current and voltage output monitoring, output enable/disable, etc.
  • Page 46 Operation Sorensen SGA Series Schematic Electrical Functional Description Symbol Chars. Isolated remote output on/off. Externally supplied AC/DC voltage source for on/off control. A positive (+) 12 to 240 VAC or 6 to 120 VDC voltage will enable the output, i.e., ISO ON/OFF turn on the output of the supply.
  • Page 47 Sorensen SGA Series Operation Schematic Electrical Functional Description Symbol Chars. 0-5 VDC (0-100%) front panel current potentiometer set Zout ~ point monitor output. Minimum load resistance ISET 100Ω 10kΩ. Circuit return Pin 6 (COM). Not Used Isolated TTL/CMOS on/off control. A high state TTL/CMOS voltage enables the output, i.e., turns on the...
  • Page 48 Operation Sorensen SGA Series Schematic Electrical Functional Description Symbol Chars. 1 milliamp current source for remote current programming ~ 10.8V using resistance. 0-5k ohm resistor referenced to Circuit IP RES compliance return Pin 23 or Pin 25 (IP RTN) will program the output current from 0-100%.
  • Page 49 Sorensen SGA Series Operation REM OT E CU RREN T PROGRAM M I N G 3 .4 Remote current programming is used for applications that require the output current be programmed (controlled) from a remote source. An external resistance or external voltage source may be used as a programming device.
  • Page 50 Operation Sorensen SGA Series 3 .4 .2 REM OT E CU RREN T PROGRAM M I N G U SI N G A 0 -5 V DC OR 0 -1 0 V DC V OLT AGE SOU RCE A DC voltage source for remote current programming is connected between J1-10 (IP 5V) or J1-16 (IP 10V) and the return terminal J1-23 (IP RTN).
  • Page 51 Sorensen SGA Series Operation REM OT E V OLT AGE PROGRAM M I N G 3 .5 Remote voltage programming configuration is used for applications that require the output voltage be programmed (controlled) from a remote source. An external resistance or external voltage source may be used as a programming device.
  • Page 52 Operation Sorensen SGA Series 3 .5 .2 EX T ERN AL V OLT AGE PROGRAM M I N G U SI N G A 0 -5 V DC OR 0 -1 0 V DC V OLT AGE SOU RCE A DC voltage source for remote voltage programming is connected between J1-9 (VP 5V) or J1-15 (VP 10V) and the return terminal J1-20 (VP RTN).
  • Page 53 Sorensen SGA Series Operation REM OT E SEN SI N G 3 .6 Remote voltage sensing is recommended at all times, whether you connect sensing leads to the load or directly to the output terminals. Remote sensing at the load provides the best load regulation.
  • Page 54 Operation Sorensen SGA Series CAU T I ON ! If the power supply is operated with load power lines disconnected and sensing line connected, internal power supply damage may occur. (Output current then flows through sensing terminals.) To use remote voltage sensing, connect the power supply as described below.
  • Page 55 Sorensen SGA Series Operation REM OT E OU T PU T ON /OFF CON T ROL 3 .7 Remote output on/off control may be accomplished by contact closure or by an isolated external AC/DC or TTL/CMOS voltage source. 3 .7 .1 REM OT E OU T PU T ON /OFF BY CON T ACT CLOSU RE Output is on when contacts (J1-5 and J1-6) are closed.
  • Page 56 Operation Sorensen SGA Series 14 ISO TTL/CMOS ISO RTN 2 Figure 3-15. Remote Output ON/OFF Using Isolated TTL/CMOS Voltage Supply REM OT E OV ERV OLT AGE SET POI N T 3 .8 CAU T I ON ! Do not program the remote overvoltage set point greater than 10% (5.5V) above the power supply rated voltage (except as noted) as internal power supply damage may occur.
  • Page 57 Sorensen SGA Series Operation REM OT E SH U T DOWN (S/D) 3 .9 A remote +12 VDC voltage can be connected externally between terminals J1-18 (S/D Fault) and J1-24 (COM) to disable, i.e., shut down the output of the power supply (Figure 3-17). Disabling or opening the +12 VDC signal will allow the unit to revert to normal operation.
  • Page 58 Operation Sorensen SGA Series PARALLEL AN D SERI ES OPERAT I ON 3 .1 0 The following modes of operation are used for applications requiring more current or voltage than is available from a single power supply. To meet the requirements for greater output voltage or current, two supplies may be connected in series or up to five connected in parallel.
  • Page 59 Sorensen SGA Series Operation Figure 3-18. Parallel and Remote/Local Sense Connections Note: The OVP circuit remains active for all units in parallel operation. If the units are set to different OVP levels, the paralleled system will trip according to the lowest setting.
  • Page 60 Operation Sorensen SGA Series distances internal to the construction. If a higher output voltage range is required, contact the Sales Department or Customer Service for availability. • The maximum allowable current for a series string of power supplies is the rated output current of a single supply in the string.
  • Page 61 SECT I ON 4 V ERI FI CAT I ON AN D CALI BRAT I ON I N T RODU CT I ON 4 .1 This section provides verification and calibration procedures for the SGA Series power supplies and isolated analog control (option). 4 .1 .1 V ERI FI CAT I ON AN D CALI BRAT I ON CY CLE Annual calibration verification is recommended.
  • Page 62 Verification and Calibration Sorensen SGA Series SHUNT Figure 4-1. Precision Current Shunt V ERI FI CAT I ON AN D CALI BRAT I ON 4 .2 PROCEDU RE All calibration potentiometers are located on circuit board assemblies located at the front of the chassis, and adjustments to the potentiometers are made from the top of the chassis.
  • Page 63 Sorensen SGA Series Verification and Calibration When a unit is configured with the Isolated Analog option, calibration must be first performed on that option (go to Section 4-3), before the Standard Verification and Calibration procedure of Section 4.2 is performed.Current Mode 4 .2 .1 CU RREN T M ode...
  • Page 64 Verification and Calibration Sorensen SGA Series 4 .2 .2 V OLT AGE M ODE To operate the SGA Series unit in remote voltage programming mode: 1. Disable AC power to the unit. Remove the current shunt from the output and verify that there is no load attached.
  • Page 65 Sorensen SGA Series Verification and Calibration 4 .2 .3 RESI ST OR PROGRAM M I N G CU RREN T SOU RCES (Standard non-isolated Analog Control Interface) 1. Disable AC power to the unit. Turn the front panel Voltage and Current knobs fully counterclockwise.
  • Page 66 Verification and Calibration Sorensen SGA Series THERNET CAL:UNLOCK “6867” CAL:MOD;LASTCALDATE MM DD YYYY CAL:MOD:NEXTCALDATE MM DD YYYY CAL:STORE CAL:LOCK I SOLAT ED AN ALOG (OPT I ON ) V ERI FI CAT I ON 4 .3 AN D CALI BRAT I ON PROCEDU RE...
  • Page 67 Sorensen SGA Series Verification and Calibration 3. Attach a precision meter in parallel with the voltage programming source. ± 4. Set the voltage source to 0.0V 1mV. 5. Apply AC power and turn the front panel voltage set potentiometer fully clockwise and verify the current mode indicator is illuminated.
  • Page 68 Verification and Calibration Sorensen SGA Series 8. Set the programming source to 0.5V ±1mV. 9. Verify that the unit is set to 10% ± 0.25% of full-scale output voltage. If necessary adjust R35 for 10% output voltage. 10. Repeat the steps above as required to obtain the required accuracy.
  • Page 69 Sorensen SGA Series Verification and Calibration STANDARD CALIBRATION ADJUSTMENT R45 = VPRES (1mA) Adjust R71 = IPRES (1mA) Adjust R87 = Voltage Meter Adjust R74 = 100% Voltage Adjust R90 = Zero Voltage Adjust R86 = Current Meter Adjust R69 = 100% Current Adjust...
  • Page 70 Verification and Calibration Sorensen SGA Series This page intentionally left blank. 4-10 M550129-01 Rev T www.valuetronics.com...
  • Page 71 SECT I ON 5 M AI N T EN AN CE I N T RODU CT I ON 5 .1 This chapter contains preventive maintenance information for the SGA Series power supplies. WARN I N G! All maintenance that requires removal of the cover of the unit should only be done by properly trained and qualified personnel.
  • Page 72 Maintenance Sorensen SGA Series An annual inspection of the SGA Series unit is recommended. Table 5–1 lists the visual inspection checks to be performed, and the corrective action to be taken. Table 5–1. Recommended Annual Inspection Item Inspect For Corrective Action...
  • Page 73 Sorensen SGA Series Maintenance FU SES 5 .3 There are no user replaceable components in the power supply. WARN I N G! Only properly trained and qualified personnel should remove the cover from the power supply. Service, fuse verification, and connection of wiring to the chassis must be accomplished at least five minutes after power has been removed via external means;...
  • Page 74 Maintenance Sorensen SGA Series This page intentionally left blank. M550129-01 Rev T www.valuetronics.com...
  • Page 75 I N DEX Circuit Breaker Requirements, 2-4, 2-5 Noise, 1-4 Controls and Indicators, 3-1 Analog Control (J1), 3-11 Current Mode Operation Operation, 3-9 Current Mode, 3-9 Verification and Calibration, 4-3 Local, 3-7 Master/Slave, 3-24 Parallel, 3-24 Fuses, 5-3 Remote Current Programming, 3-15 Remote Output On/Off Control, 3-21 Remote Overvoltage Setpoint, 3-22 Remote Sensing, 3-19...
  • Page 76 Index Sorensen SGA Series Voltage, 1-4 Series Operation, 3-25 Setup, 3-8 Ventilation, 2-2 Shaft Lock, 3-6 Verification and Calibration, 4-2 Specifications, 1-1 Current Mode, 4-3 Current, 1-4 Voltage Mode Electrical Characteristics, 1-2 Operation, 3-8 Environmental Characteristics, 1-2 Noise, 1-4 Physical Characteristics, 1-5...