SM 800 - series • • • • SM 7-80 SM 18-50 SM 70-AR-24 SM 400-AR-4 Schulz-Electronic GmbH | Postfach 11 01 18 . D-76487 Baden-Baden . Hausanschrift | Dr.-Rudolf-Eberle-Str. 2 . 76534 Baden-Baden Fon +49.7223.9636.0 . Fax + 49.7223.9636.90 . vertrieb@schulz-electronic.de . www.schulz-electronic.de Geschäftsführer | Dipl.-Ing. (FH) Hubert Maier HR | Baden-Baden HRB 1299 . UST-ID-Nr. 143 464 986 . Steuernr. 33015-57707 VR Bank Sinzheim eG | BLZ 665 623 00 . Kto.
SM800 DELTA ELEKTRONIKA BV Safety Instructions Caution The following safety precautions must be observed during all phases of operation, service and repair of this equipment. Failure to comply with the safety precautions or warnings in this document violates safety standards of design, manufacture and intended use of this equipment and may impair the built-in protections within. Delta Elektronika shall not be liable for user’s failure to comply with these requirements.
DELTA ELEKTRONIKA BV SM800 Environmental Conditions The Delta Elektronika power supplies safety approval applies to the following operating conditions: Indoor use Ambient temperature Maximum relative humidity : -20 to 50 °C : 95%, non condensing, up to 40 °C : 75%, non condensing, up to 50 °C Altitude: up to 2000m Pollution degree 2 Caution risk of electrical Shock ! Instruction manual symbol.
SM800 DELTA ELEKTRONIKA BV DESCRIPTIONS 1) SM 7.5-80 OUTPUT The SM7.5-80, SM18-50, SM70-AR-24 and the SM400-AR-4 can either be used as a constant voltage source with current limiting or as a constant current source with voltage limiting. The change of mode occurs sharply at the crossing of the voltage and current settings. fig. 3 - 1 shows the output ranges. The SM70-AR-24 and the SM400-AR-4 feature an AUTORANGING facility where the power supply automatically switches over between two current ranges.
DELTA ELEKTRONIKA BV 9) SM800 ANALOG PROGRAMMING The output voltage and current can be programmed by an external analog voltage. This programming is very accurate and linear. The levels are all standardised on 5V. The inputs have a protection circuit formed by a series resistor and a parallel zener (see fig. 3 - 4). The capacitor limits the speed to a safe value. Note that the analog inputs (and outputs) are not floating, but the common is connected to the negative output terminal.
SM800 DELTA ELEKTRONIKA BV fig.
DELTA ELEKTRONIKA BV SM800 Switch no. ON position SW 1 - 1 Programming via 15pole connector CON E (analog). SW 1 - 2 ‘Output On’ after mains on SW 1 - 3 DCF LED enabled SW 1 - 4 16) Parallel Master / Slave operation OFF position Op tional pro gram ming with e.g.
SM800 DELTA ELEKTRONIKA BV Warning! The 3750 Vrms cannot be tested afterwards on the assembled unit because the insulation between the components on the input side to the case (like the bridge rectifier) is specified at 2500 Vrms. Since the insulation output - case is low (only 600 VDC) the insulation of the primary components to case will break down when 3750 Vrms is applied between input and output (2500 Vrms + 600 VDC < 3750 Vrms) (see also fig. 3 - 14).
DELTA ELEKTRONIKA BV 29) SM800 SERIES OPERATION Series operation is allowed up to 600V total voltage. The power supplies can be connected in series without special precautions. For easier control, Master / Slave operation is recommended (see fig. 3 - 18). By using the Master / Slave Series feature a dual tracking power supply can be made with one unit as master and one as slave.
SM800 32) DELTA ELEKTRONIKA BV VOLTAGE AND CURRENT LIMIT The Voltage and Current Limits maintain the output to a safe preset value. They do not trip, so no resetting is needed after a fault. It can be very handy to have hardware limits when the power supply is programmed. The limits can easily be set by pressing the DISPLAY LIMITS button and adjusting the limit potentiometers with a screwdriver.
DELTA ELEKTRONIKA BV SM800 OPERATING MANUAL 1) OPERATING THE UNIT FOR THE FIRST TIME • • • • • • • • • • • • • • 2) Check there is no condensation on the unit. If there is, allow some time to dry. Check there is a link between + and S+ and between – and S– on the SENSE BLOCK (on rear panel). Check there is a link between the inputs of the Interlock (CON A, rear panel). Set the CV and CC potentiometers to minimum (fully anti clockwise).
SM800 DELTA ELEKTRONIKA BV To avoid hum or noise, the programming cable may have to be twisted in some cases. • To program the unit by current instead of voltage, simply use a parallel resistor as a current to voltage converter. • Pressing the DISPLAY SETTINGS button will show the programmed values for CV and CC. • CAUTION: The analog inputs are not isolated from the output. The Ø of the prog. input (pin 1) is internally connected to the S–, the S– is connected to the negative output.
DELTA ELEKTRONIKA BV SM800 case a large electrolytic capacitor (Cd) in series with a damping resistor (Rd) both in parallel with the load will help (see fig. 4 - 6). Check that the capacitor Cd in combination with the load leads and resistor Rd forms a well damped circuit. • Since the voltmeter is internally connected to the sensing terminals, it will automatically indicate the voltage on the load. Note that the voltage measured on the load will be lower than on the output terminals.
SM800 12) MASTER / SLAVE PARALLEL OPERATION • • • • • • 13) Note: Master / Slave parallel is not recommended for more than 4 units, consult factory for using more than 4 power supplies in parallel. First, connect output terminals and test system in normal parallel operation. Ensure that all power connections are reliable. Second, switch off all units. To connect the slaves with the master via CON B and CON C, use standard RJ45 connectors according to fig. 4 - 11.
DELTA ELEKTRONIKA BV SM800 OPERATING AND STORAGE CONDITIONS 1) TEMPERATURE The operating temperature range at full load is –20 to +50 °C. But this temperature range only holds when the AIR-INTAKE and at least one of the AIR-OUTLETS is unobstructed and the temperature of the AIR-INTAKE is not higher than +50 °C. • Please note: a lower temperature extends the life of the power supply.
SM800 DELTA ELEKTRONIKA BV TROUBLE SHOOTING 1) GENERAL In case you need assistance for repairing a unit, please contact our engineers using the address "Support@Delta-Elektronika.nl". • In case you want us to repair the unit, please first fill out the RMA-form before sending the unit to us. Adding a detailed fault description will help us to repair the unit as soon as possible. On our website www.DeltaPowerSupplies.com the RMA-form can be found under 'Support'.
DELTA ELEKTRONIKA BV 6) SM800 MASTER / SLAVE PARALLEL PROBLEMS Check the voltage drop of the wiring between the master and the slaves is < 10 mV. • Check the wiring has a low inductance. • 7) OUTPUT VOLTAGE IS HIGHER THAN SET VALUE • 8) Check connections on SENSE BLOCK (on rear panel), For normal operation there should be a link between + and S+ and between – and S– (see also fig. 4 - 16). When remote sensing is used, check the wires of the sensing.
SM800 DELTA ELEKTRONIKA BV CALIBRATION 1) GENERAL • 2) METER CALIBRATION • 3) The power supplies are factory calibrated and normally need no further calibration. Only in special situations (for example after repairing a unit) calibration can be necessary. DIGITAL METERS The full scale indication can be calibrated with R25_31 and R25_36 on P673 (fig. 4 - 17). SPECIAL CALIBRATIONS The following calibrations must be done by qualified personnel only. Wrong calibration causes malfunction.
P.O. BOX 27 4300 AA ZIERIKZEE NETHERLANDS TEL. +31 111 413656 FAX. +31 111 416919 www.DeltaPowerSupplies.com EC Declaration of Conformity We Delta Elektronika P.O. BOX 27 4300 AA Zierikzee The Netherlands declare under sole responsibility that the following Power Supplies: SM 7.5-80 SM 18-50 SM 70-AR-24 SM 400-AR-4 meet the intent of Directives 2004/108/EC; 92/31/EEC; 93/68/EEC for Electromagnetic Compatibility and Directives 73/23/EEC; 93/68/EEC regarding Electrical Safety.
