Amrel PPS-1326 Manuale utente

ONE: INTRODUCTION

Congratulations! You have just purchased one of the most advanced professional Programmable Power Supplies

available. The innovative ergonomic design and overall high quality will provide years of reliable operation.

Therefore, it is very important to completely familiarize yourself with the unit before attempting use. Please read

this manual carefully, paying particular attention to the Warning and Caution sections.

At this time, please fill out the warranty card with all the applicable information and return to American

Reliance. The completed warranty card will ensure the benefits of a three-year warranty. We at American

Reliance, thank you for your selection of one of our products and welcome you to the family of American Reliance

product owners. Remember that, at American Reliance service does not end upon your purchase, it is just

beginning. If you have any questions, please do not hesitate to call our toll-free technical support line at (800) 654-

9838.

1.1 DESCRIPTION

The Programmable Power Supply Series from American Reliance Inc. offers a complete solution to power supply

system requirements. These models are indispensable instruments in assisting in the development and testing of

new products, as well as being standard instruments for automatic test systems. The wide range of output selection

combined with excellent load/line regulation creates a vital instrument in your lab environment.

The PPS Series come standard with a GPIB interface and a three-year warranty. Plus, all units come standard with

output voltage and current programming, overvoltage and overcurrent protection, remote sense, reverse polarity

protection and output enable/disable. All models of the programmable power supply series are able to be calibrated

either in local or remote mode.

1.2 INSPECTION

When you unpack your new programmable power supply from its original packaging, carefully check each item for

damage that may have occurred during shipment. If anything is damaged or missing, please contact American

Reliance at (818) 303-6688 for immediate service.

1.3 INCLUDED ITEMS

Programmable Power Supply

Operation Manual

Power Cord

1.4 CAUTIONS AND WARNINGS

1. The input power requirements for the programmable power supplies are 115/230 VAC ±10% or 240VAC

±10%, 50/60 Hz.

2. Before begin to operate the power supply, set the correct voltage 115 or 230(240) VAC setting equal to the

applied voltage, otherwise damage will result to the power supply.

3. Do not use solvents or aromatic hydrocarbons to clean the module as they may damage the finish. If cleaning

is necessary, use only a mild solution of soap and warm water. Be careful not to allow water to enter the unit.

Please be sure to always disconnect the power cord before cleaning.

4. Use only specified fuses. Do not use a substitute fuse which is of a different size and rating. Otherwise, damage

may result to the unit.

5. Do not substitute or modify any internal circuits.

6. Exercise extreme caution when cables are over four feet in length.

7. Turns off AC power (or disable unit) before disconnecting load or floating voltages.

8. Operates the power supply with properly rated wire sizes.

1.5 LOCATION AND COOLING

1. The proper operating temperature for the power supply are from 0°C to 50°C. The unit ventilates by drawing

air through the sides and exhausting it through the rear.

2. Proper ventilation area for the power supplies is at least 1" of spacing on all sides.

3. The PPSs are built to configure into 1/2 rack mount configurations.

1.6 GPIB INTERFACE CONNECTOR

The GPIB connector on the rear panel connects your supply to the computer and other GPIB devices. A GPIB

system can be connected in any configuration (star, linear, or both) as long as the following rules are observed:

1) The total number of devices including the computer should not be greater than 15.

2) The total length of all cables used should not be more than 2 meters times the number of devices connected

together, or a maximum length of 20 meters.

Please do not stack more than three connector blocks together on any GPIB port. The resulting leverage can exert

excessive force on the mounting panels. Make sure that all connectors are fully seated and that the lock screws are

firmly hand tightened. Use a screwdriver only when removing the screw from the mounting panels.

TWO: GETTING STARTED

2.1 UNIT FAMILIARIZATION

Use the following illustrations of the power supplies in conjunction with the descriptions to familiarize yourself

with the unit.

Front Panel: Figure A, B, C, D

ENTER

OVP BEEP

UTILITY

SELECT

êê

éé

çç èè

OUTPUT

30.00V 0.000A

RMT OVP

OCP

High

Figure A. Front Panel of PPS-1326

30.00V 0.000A

RMT OVP

OCP

ENTER

OVP BEEP

UTILITY

SELECT

êê

éé

çç èè

OUTPUT

Figure B. Front Panel of PPS-1603/10710

ENTER

OVP BEEP CH

UTILITY

SELECT

TRK

êê

éé

çç èè

PROGRAMABLE DC POWER SUPPLY

FUNCTION/DATA ENTRY

1.002V 0.000A OVPRMT

CC OCP

Figure C. Front Panel of PPS-1322/1302A

ENTER

OVP BEEP CH

UTILITY

SELECT

TRK

êê

éé

çç èè

PROGRAMABLE DC POWER SUPPLY

FUNCTION/DATA ENTRY

CH 2CH 1

1.002V*0.000A OVP1

OVP2TRK

RMT

CC2

CC1 OCP1

OCP2

0.999V 0.000A

Figure D. Front Panel of PPS-2322

2.1.1 FRONT PANEL KEYS

NOTE: Most soft keys have two functions. The first function of the keys is function entry (i.e. VSET, ISET,

OCP etc.). The second function for the soft keys is numeric data entry (i.e. 0-9).

1. LCD Display Displays alphanumeric information with status annunciators. A detailed listing

of descriptions is presented in section LCD STAUS ANNUNCIATORS

2. Power On/Off Powers on the unit.

3. Negative Terminal Negative output terminal.

4. Ground Terminal Ground output terminal.

5. Positive Terminal Positive output terminal.

6. -S Terminal Negative remote sense (Applicable only for the PPS-1326/1603/10710)

7. +S Terminal Positive remote sense (Applicable only for the PPS-1326/1603/10710)

8. VSET (7) Output control key used to display or alter the present voltage setting. Numeric

entry key for number seven.

9. ISET (8) Output control key used to display or alter the present current setting. Numeric

entry key for number eight.

10. TRK (9) Mode control key which activates the tracking mode on or off. (Applicable only

for the PPS-2322 ). Numeric entry key for number nine.

11. LCL (CLEAR) Used in conjunction with the numeric entry keys to clear partially set

commands and returns unit to the metering mode. Also returns the supply to

Local mode when the unit is operating in the Remote mode.

12. OVSET (4) Output control key used to display or alter the overvoltage threshold. Numeric

entry key for number four.

13. OCP (5) Mode control key which activates the "OverCurrent Protection" mode on or off.

Numeric entry key for number five.

14. ADDR (6) System control key used to view or alter the GPIB address. Addresses available

are 0-30. Numeric entry key for number six.

15. OUTPUT (ON/OFF) Mode control key which activates the output on or off. When the output is

disabled, the LCD displays "OUTPUT OFF".

16. OVP (1) Mode control key which activates the "OverVoltage Protection" mode on or off.

Numeric entry key for number one.

17.

(2) This key increases the value of the digit to be varied.

Numeric entry key for number 2

18. BEEP (3) Activates the audible indicator on or off. Numeric entry key for number three.

19.

(0) This key moves the cursor one digit left until it comes to the desired

digit to be varied. Numeric entry key for "0".

20. ê(.)This key decreases the value of the digit to be varied.

Decimal point key.

21. èThis key moves the cursor one digit right until it comes to the digit to be

varied.

22. CH ( SELECT ) This key allows you to select channel 1 or channel 2 (Applicable only for the

PPS-2322 ).

23. UTILITY ( ENTER ) Reserved for future use. Enters the values in the setting mode and returns the

display to metering mode.

REAR PANEL: Figure E-1, E-2, E-3

Figure E -1. Rear Panel of PPS-1603/10710

OUTPUT

channel 1 OUTPUT

channel 2

Figure E -2. Rear Panel of PPS-2322

Figure E -3. Rear Panel of PPS-1322/1302A/1326

2.1.2 REAR PANEL

24. Ventilation ports -Exhausts warm air from the unit.

25. GPIB Interface -24 pin parallel GPIB interface connector.

26. Voltage Selector -Selects voltage of either 115VAC or 230(240)VAC, -10% ∼+10%, 50/60Hz.

27. Fuseholder -Fuseholder for AC line.

28. AC receptacle -AC plug for power cord.

29. Negative Terminal (-) -Negative rear screw terminal output for hard wiring.

30. Positive Terminal (+) -Positive rear screw terminal output for hard wiring.

31. -S-Negative rear screw terminal for remote sense output. Enables hard wiring.

32. +S -Positive rear screw terminal for remote sense output. Enables hard wiring.

33. Ground Terminal -ground rear screw terminal.

34. External analog input voltage for programming output voltage. Input voltage ranges from 0 Volts to 10 Volts.

35. Voltage external programming reference point.

36. External analog input voltage for programming output current. Input voltage ranges from 0 Volts to 10 Volts.

37. Current external programming reference point.

<NOTES:>

1. The rear panel configuration is identical on all power supplies. However, the PPS-2322 has an

additional terminal strip for hard wiring the second channel.

2. The PPS-1603 and the PPS-10710 have an external programming input terminal located at the

rear of the supply. Please refer to section 3.7 for further information.

2.2 LCD STATUS ANNUNCIATORS

LIQUID CRYSTAL DISPLAY: Figure F-1, F-2, F-3

OCP1

CC2 30.00V * 0.000A

1 5

CC1

TRK

RMT OVP1

OVP2

OCP2

INPUT ERROR!

Figure F -1. LCD of PPS-2322

OVP

OCP

RMT

CC 30.00V 0.000A

Figure F -2. LCD of PPS-1322/1302A/1603/10710

OVP

OCP

RMT

CC 30.00V 0.000A

High

Figure F -3. LCD of PPS-1326

<NOTE:>

The LCD displays real time output Voltage/Current & mode status.There are no status

indicators for CV mode. These messages are viewed in either local or remote mode.

1. CC1 -Channel 1 is operating under constant current mode.

2. CC2 -Channel 2 is operating under constant current mode. (Applicable only for the PPS-2322)

3. RMT -The supply is operating in remote mode.

4. TRK -The supply is operating in tracking mode. (Applicable only for the PPS-2322)

5. OCP1 -Overcurrent protection on channel 1 is enabled. When blinking, the overcurrent circuit

has been activated and disabled the output.

6. OCP2 -Overcurrent protection on channel 2 is enabled. When blinking, the overcurrent circuit

has been activated and disabled the output. (Applicable only for the PPS-2322)

7. OVP1 -Overvoltage protection on channel 1 is enabled. When blinking the overvoltage circuit

has been activated and disabled the output.

8. OVP2 -Overvoltage protection on channel 2 is enabled. When blinking the overvoltage circuit

has been activated and disabled the output. (Applicable only for the PPS-2322)

9. INPUT ERROR! The numeric value entered is out of range. (Applies to all models)

10. High or Low The supply is operating in either the high or low range. (Applicable only to the PPS-

1326)

2.3 OUTPUT TERMINALS AND WIRES

All models have terminal blocks on the rear panel which include positive and negative outputs, positive and

negative remote sense outputs, and earth ground.

<NOTE:>

The power supply is set at the factory for local sense operation (i.e. the +S and -S terminals are

strapped to the "+" and "-" terminals by a shorting plate at the rear terminal block). When

operating in remote sense mode, remove the shorting plate and refer to section 3.3 for remote

sense operation.

Additionally, all models have positive, negative and earth ground terminals in the front of the unit. Remote sense

capability is discussed in detail in section 3.3. A brief definition of remote sense is a measurement of voltage at the

load rather than at the output terminals.

Local connections are made to the "+" and "-" terminals of the power supply. Terminated loads only. Wrap and

bundle wires to reduce coupling effect.

In order to safely and sufficiently handle electric current, the proper wire size must be selected. Select a wire size

with sufficient rating to carry the current without overheating. Other factors to be taken into consideration are

voltage drop and conductor temperature.

The following table lists current carrying capacity of various wire sizes. For further information please refer to the

NEC 1987 Handbook.

TABLE 1: Stranded Copper Wire Ampacity and Resistivity.

Ampacity Per Wire (Amps)

Wire Size 2 Wire Bundle 4 Wire Bundle Resistivity

(AWG) (Amps) (Amps) (ohm/ft)

20 7.8 6.9 0.0102

18 14.5 12.8 0.0064

16 18.2 16.1 0.0040

14 29.3 25.9 0.0025

12 37.6 33.2 0.0016

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