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INSTRUCTION MANUAL 

-

 MODEL

 

DLP 

400-5-750A 

 

5

3.0

 

OPERATING

 

INSTRUCTIONS

The

 

following procedure

 

is

 

recommended

 

for 

hooking

 

up 

the

 

Dynaload:

A. 

Set 

the

 

AC 

and

 

DC

 Dynaload

 

ON/OFF

 

switches

 to 

off.

B. 

Set 

the meter

 

range

 

switches

 

in

 

their

 maximum

 

voltage 

and

 

current 

positions.

C. 

Set

 

the

 

load

 

adjustments

 

controls 

in the

 

counter

­

clockwise

 

position.

D. 

Set

 the 

mode 

selector

 

switch 

to

 

the

 

desired 

mode.

E. 

Connect

 

the 

Dynaload to

 

a standard 

115V,

 

50-60 

Hertz

 

power

 

source 

(optional

 

input

 

voltage

 

ranges 

are 

available).

F.

 

Connection 

the

 source to

 

the

 

load 

terminals

 

of

 the

 

Dynaload, E+

 and

 

E-

 

on

 

the

 

rear

 

of

 

the

 

unit.

 (Two

 

terminals are

 

provided

 in 

parallel for

 

each 

polarity

 

for

 

simplified

 

connections.

 

Parallel

 +

 

and 

-

 

terminals

 

are 

provided on

 

the

 

front

 

panel 

for 

convenience.)

G. 

If

 

external

 

modulation

 is

 

to

 

be used,

 the

 external 

programming

 voltage

 should 

also 

be 

connected.

H. 

Set

 

the 

AC 

power

 

switch 

to

 

on,

 

the AC ON

 

indicator

 

lamp 

should light.

I.

 

The

 

DC ON

 

switch

 

should 

now

 be

 

closed.

J. 

Observe

 

that

 

front

 

panel

 Dynaload

 

voltmeter 

indicates

 

the

 

source 

voltage.

Содержание Dynaload DLP-400-5-750A

Страница 1: ...TDI Transistor Devices Dynaload Model DLP 400 5 750A Operator s Manual MAY 1988 DYNALOAD DIVISION 36A NEWBURGH ROAD HACKETTSTOWN NJ 07840 Phone 908 850 5088 Fax 908 850 0679...

Страница 2: ...E MODE 6 AMPS VOLT 3 2 1 CONSTANT CURRENT MODE 7 3 3 EXTERNAL MODULATION 9 3 4 PULSE MODE 10 3 5 SHORT CIRCUIT 10 3 6 CONSTANT VOLTS MODE 11 3 7 POWER RATING 11 3 8 PROTECTIVE CIRCUITS 11 3 9 SPECIAL...

Страница 3: ...S 18 5 2 0 01A V MODE 19 5 3 0 03A V MODE 20 5 4 0 1A MODE 21 5 5 0 5A MODE 21 5 6 VOLTS 22 5 7 EXTERNAL MODULATION MODE 22 5 8 PULSE 23 5 9 SHORT CIRCUIT 24 5 10 CURRENT LIMIT POWER LIMIT PROTECTION...

Страница 4: ...mps volt or may be switched to a constant current load characteristic current regulated at a pre selected value or a constant voltage type of load similar to a battery or a zener diode Provisions are...

Страница 5: ...ust Constant current 0 5A as determined by the front panel load adjust Constant voltage load In this position the load is similar to a battery being charged or a constant voltage zener diode no curren...

Страница 6: ...this switch should be opened NOTE WHEN TESTING LOW CURRENT SOURCES IT MAY BE ADVISABLE TO USE AN EXTERNAL FUSE OR CIRCUIT BREAKER TO PROTECT THE SOURCE CAUTION THE METER RANGE SELECTOR SWITCH SHOULD A...

Страница 7: ...of source to be tested E Minus load connect to minus terminal of source to be tested TB1 1 0 to 6V programming voltage input TB1 2 Programming voltage return internally connected to the minus terminal...

Страница 8: ...standard 115V 50 60 Hertz power source optional input voltage ranges are available F Connection the source to the load terminals of the Dynaload E and E on the rear of the unit Two terminals are prov...

Страница 9: ...tation may be used to obtain further accuracy and eliminate the effects of leakage currents in the Dynaload or line voltage drops at high currents 3 1 CONSTANT RESISTANCE MODE AMPS VOLT Two scales are...

Страница 10: ...he Dynaload or for use at very low currents There are minor leakage currents of a few milliamperes in the Dynaload instrumentation which do not pass through the Dynaload ammeter voltmeter current volt...

Страница 11: ...amperes position 0 1A B Turn on the power source and the Dynaload and set the power source to the desired output voltage assume 100V C Turn the coarse and fine DC load adjusts until 1A of load current...

Страница 12: ...to the negative lead of the Dynaload The Dynaload will program from 0 5A as the external modulation voltage is programmed from 0 6V if the DC load adjustments are set in the maximum clockwise positio...

Страница 13: ...ntrols should be turned fully counterclockwise The maximum total of the pulse and DC load will be limited around 5 5A by the internal current limit protection 3 5 SHORT CIRCUIT The short circuit mode...

Страница 14: ...not occur the rear of the Dynaload should be clear for the air intake and the air exhaust The cooling air enters and leaves from the rear The Dynaload should periodically be checked for dust accumulat...

Страница 15: ...the input voltage is increased thereby limiting the maximum power which may be programmed into the Dynaload 3 9 SPECIAL APPLICATIONS The Dynaload may be used for AC load testing within its ratings by...

Страница 16: ...peration particularly the external modulation function 4 2 VOLTMETER CALIBRATE A With the Dynaload set for no load place an external calibrated voltmeter across the input terminals of the Dynaload and...

Страница 17: ...range selector switch at 0 6A increase the load until the external ammeter reads 0 4A E Adjust R38 so that the front panel ammeter also reads 0 4A F Switch the ammeter selector switch to 1 8A and adju...

Страница 18: ...to the input terminals of the Dynaload and adjust the 03A V calibrate potentiometer R30 so that between 3 and 3 2A of load current is obtained With the Dynaload in the 0 03A V position and the load a...

Страница 19: ...imum clockwise position and adjust R19 to obtain between 5 and 5 2A E Make sure that the current limit setting is not interacting in any way 4 7 EXTERNAL MODULATION A With 5VDC applied apply a 6 00 Vo...

Страница 20: ...s on external meter D Adjust R72 for a reading of 500 volts on the digital meter 4 10 SQUARE ADJUST A Connect an oscilloscope to the current sample output B Set mode select to pulse mode C Adjust the...

Страница 21: ...13 Rll and zener diode VR6 The 25V is regulated to 16V by constant current source QI and its associated components Rl VR5 R3 R2 and zener diodes VR2 and VR3 which generate 16V and 8V Secondary 6 7 of...

Страница 22: ...hares the input voltage equally Three of the banks consisting of Q103 through Q107 Q108 through Q112 Q113 through Q117 are slave banks to the actual regulating bank consisting of Q118 through Q122 whe...

Страница 23: ...esistive load The maximum voltage that can be applied to the non inverting input is limited by R24 and R54 so that approximately only 10 millamperes of current can be drawn for each volt at the input...

Страница 24: ...on the inverting and non inverting inputs of U1 These two points are controlled only by the voltage reference supplied to Pin 5 and the current through the shunt which means a constant amount of curr...

Страница 25: ...R17 and R18 to the inverting input of U1 replacing the current feedback loop Accordingly if the input voltage tends to exceed the voltage selected by the volts control on the front panel U1 condutcs m...

Страница 26: ...rises driving the power circuit The current then rises until the voltage across the shunt is sufficient to raise the voltage at the inverting input turning U1 off If a portion of the voltage on the no...

Страница 27: ...on 5 10 CURRENT LIMIT POWER LIMIT PROTECTION The voltage proportional to load current generated across SHI is applied through R7 to the base of Q3 The voltage reference generated by zener diode VR8 is...

Страница 28: ...t so that at 150V input it is impossible to draw more than 6A 5 11 INSTRUMENTATION CIRCUITS Range selector switches and calibrating resistors are provided for the front panel ammeter and voltmeter 5 1...

Страница 29: ...9 CRI04 PULSE ON CURRENT _ SAMPLE4 SI 12 GA UNLESS OTMERwisi SPECIFIED DIMENSIONS ARE IN INCHES TOLERANCES ANGLES t FRACTIONS t 1 PLACE DECIMALS t 2 ruiCt DECIMALS t 1 PLACE DECIMALS t material SHIOI...

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