DAHUA DH1716 User Manual

odel

MMM

odel

DH1716

FFF

amily

CC/CV

DCDCDC

CC/CV

PPP

User

ower

SSS

Manual

’’’

sss

Manual

upply

Dahua

Company

Electronic

ofofof

Electronic

Instrument

ininin

Beijing

2

NOTE:

set to a preset value to reduce the resistance the load. The output current increases. when the output current has reached the preset current value, the oupout voltage decreases, the output current also can not incr ease, that means the instrument has gone into CC operation mode, even through the resistance the load

is

shorted to zero, the output current also can not increase ,that means the instrument can transfer from CV operation mode into CC operation mode aut omatically, making the load no over-current ,meanwhile also protecting the instrument itself, viceversa, that

is

to

say

,the CV/CC can transfer operation modes of the power supply

automatically.

the

is

on

Fig.2 shows the operating points and range of the preset voltage /current of the

load line.

6

When the output voltage

151491110

MODEL DH17 1 6 DC POWER SUPPLY

0-35V 20A

A A

V

POWER

CURRENT

+

VOLTAGE

cc

cv

of the load

is

at A

point, then RL= ∝ ,when RL=2 Ω ,the operating point

when RL=1 Ω , the operating point

is

10V the preset current

is

at

C ,If the load decreases from RL=1 Ω to RL=0.5

is

10A.whlie the operating point

is

at B point.

Ω again ,then the operating point will move from C point to D point, the power supply will convert from CV region into CC region to operate, the operation mode converted C point × RL =10A × 0.5 Ω

is

specified

as

crossover point. The voltage

=5V.

on

the load

in

CC operation mod

at

e

Io

Applications

4.4.4.

Applications

and

Operation

and

Operation

4.1. Introduction of Front Panel and Rear Panel(see next page)

1. Power Supply Switch

2. V/I Checking, V oltage/Current Pre — Display Knob During pressing, pre — voltage/current are displayed

respectively. When the output switch

is

not turned on. Don ’tpress this knob, also the

voltmeter can display pre — voltage value.

3. OVP CHECK NO-Self – Locked Key During pressing the knob ,the voltmeter will display over — voltage protection

preset value, when the over — voltage protection preset value on

the setting vernier potentiometer.

4. Over — voltage Protection

Voltage

Setting Potentiometer Hole

5. OUTPUT Self – Locked Key

16

13

on

the voltmeter and ammter,

is

required to be set ,hold

12

1

7 2 3 4 5 6 8

12

7

11

20

10 9 8 7 6 5 4 3 2 1

Only when pressing the key, the output voltage appears

at

the output terminal.

6. Output Indicating Lamp.The indicaing lamp should light when output.

7. CURRENT Setting Knob.It can change the current preset value.

8. VOLTAGE Setting Knob.It can change the voltage preset value.

9. “ + ” Terminal Binding Post for

10.

“ - ” T erminal Binding Post for

Voltage

Output.

11. GND Point

12. Indicating Lamp of the Power Supply

13. CC Indicating Lamp . When

in

CC operation mode.

14 CV Indicating Lamp. When

it

lights, this lamp means that the power supply

it

lights that means the power supply

CV operation mode.

15. V oltmeter (Digital Display Type) It

indicates the output voltage, preset voltage and over — voltage protection

voltage.

16. Ammeter(Digital Display Type) It

indicates the current output and preset current.

NOTE: This instrument has two displays of the voltage and the current analog

meter and digital meter, plus “ D ” shows a digital meter

is

used to display, for

example,DH1716-4D shows a display of a digital meter.

17. Function Terminal Connection Strap

18. “ + ” ,a positive output terminal of the power supply

19. “ - ” ,a negative output terminal of the power supply

20. “ +S ” , a positive terminal of

21. “ -S ” , a negative terminal of

an

external sampling terminal.

an

external sampling terminal.

on

the rear panel.

on

the rear panel.

22. *Fuse holder contains a 10A fuse tube.

4.2. Operation and Applications

4.2.1.Checking the instrument counterclockwise. “ CURRENT ” knob the instrument

is

inserted into 220V local power network.

is

normal. “ VOLT AGE ” knob

is

rotated fully clockwise. The input terminal of

is

rotated fully

is

in

8

4.2.2. “ OUTPUT ”

mA

VH

Fig.4

E1+E

2

is

off, when

it is

on, the CV lamp lights, “ VOLT AGE ”

is

set to

the preset value.

4.2.3.If over — voltage protection the over — voltage protection value can be adjusted. Generally you ’ d better not set so

is

needed, hold

on

pressing “ OVPCHECK ” , so

as

prolong life of the vernier potentiometer.

4.2.4.Hold current value,

4.2.5.Turn

on

pressing “ V/I CHECK ” , set “ CURRENT ” to the desired preset

in

CV operation, rotate on

“ OUTPUT ” switch, the output indicating lamp lights, the voltage and

it

fully clockwise.

current output will appear across the output terminal.

4.2.6.If CC operation mode

then voltage preset value can be set to lower. After “ OUTPUT ”

is

required the preset current

is

set to the desired current , is

turned on. If CV lamp lights, can set “ VOLT AGE ” clockwise untill CV lamp goes out, but CC lamp lights .i.e CV mode has been converted into CC operation mode.

4.2.7.If the master and slave supplies are used

in

series, please make connection

follows:

+

to

as

Master Slave

+

-

1

3

2

4

R

3

4

6

5

6

8

7

8

7

-

9

10

9

1211

11 12

-

Master

Slave

a. Disconnect the slave supplies (3)and(4),the master (5) connects a resistor to the

slave supply(4).

Its

resistance value is: R -10k Ω VH

:

Rated value of output voltage control

range.

b. The output negative terminal of the master supply

terminal of the slave supply, The chassis of the master supply

is

connected to the positive

is

connected with the chassis of the slave supply, only the output negative terminal of the slave supply shor ted

in

conjunction with the chassis.

c. The master supply controls the output voltage, if no 26K Ω resistor, then a 27 K

Ω resistor can substitute, the output voltage of the slave supply master supply, but the output

is

still E1+E2.

is

lower than that of the

d. Power of resistor ≥ 1/2W

4.2.8.If the master and slave supplies are used

in

parallel, please make connection

follows:

is

as

9

Master

Slave

Master

+

Slave

+

I 1 +I 2

-

1

2

1

2

3

4

3

4

5

a. Disconnect the slave supply (8) and (9),the master supply (11)

the slave supply(11),the master supply (12)

6

7

6

7

Fig. 5

8

9

8

9

10

11 12

is

connected with the slave supply(10).

b. The output positive terminal, negative terminal, the chassis of the master supply

are

all

connected with that of the slave supply correspondingly. The output negative

terminal of the master supply

c. Before the master supply

preset voltage

is

set to almost same value of the two power supplies, after the two supplies are connected ma ster supply

is

in

CV operation mode.

4.2.9.If the remote programming

is

connected with the chassis.

is

not connected

in

parallel, the slave supply

is

needed, should make connection

in

parallel with the slave supply ,the

is

in

CC operation mode, while the

R

L

1211

connected with

as

follows:

+S

+

R L

-S

-

Fig.6

a. Disconnect (+S) and (+),(-S) and (-) uses a shielded two-wire cable to be connected according to the following diagram, the coating layer of the shielded cable connected to the positive terminal.

b. When the lead

is

longer, should connect a 100 μ F capacitor to the load

parallel, the voltage endurance should be more than the output voltage and should notice its

polarity.

is

in

10

4.2.10 If the remote resistance programming output voltage

V1

Fig.8

make connection

as

follows:

is

needed, should

1

3

2

4

6

5 8

7

Fig. 7

a. Disconnect (1) and (2), the shielded two — wire cable Fig.7.

b. R

otherwise, the output voltage will result

c. The output voltage

is

a 10K Ω potentiometer which can not be open circuit

in

over — voltage.

is

proportional to the resistance value.

2.4.11 If the remote voltage programming output voltage

connection

1

as

follows:

2

3

4

5 8

6

7

9

10

is

9

10

1211

R

connected

as

shown

at any

required, should make

1211

in

time,

+

a. Disconnect (3) and (4), the shielded two — wire cable

Fig.8. “ + ” terminal

is

connected with (4) , “ - ” terminal with (5) , the outer coating of the

cable with (5).

b. The output voltage

is

proportional to the controlled voltage, need a 10.5V to reach a 35V output only, but the externally – controlled voltage allowed too high, the external voltage

is

floated.

4.2.12 If the remote resistance programming output current

make connection

as

follows

is

connected

it is

is

required, should

as

shown

possible to

in

is

not

11

1

V2

3

2

4

6

5

8

7

9

11

10 12

R

Fig.9

a. Disconnect (6) and (7), the shielded two — wire cable b. R current

is

a 10K Ω potentiometer which can not be open

is

out of control,

as

soon

as

the load current becomes larger, can cause the damage

is

at any

connected

as

shown

time otherwise, the output

in

to the regulator. c. The output preset current

4.2.13 If the remote voltage programming output current connection

as

follows:

3

is

proportentional to the resistance value.

4

6 71 2 5

8

9

is

required, should make

10 11

12

+

-

Fig. 10

a. Disconnect (8) and (9), the shielded two — wire cable

Fig. 10, the positive terminal of the externally – controlled voltage

is

connected

is

connected with (9),

as

shown

the negative with (11), also the outer coating of the cable with (11).

b. The output current

is

proportional to the controlled voltage,

it is

possibleto need a 10.5V to reach a 20A output current only, but the externally — controlled voltage can not be too high.

c. The external voltage

4.2.14 Some Attentions a.

In

CV mode operation, the determination of the load effect should locate

is

floated.

in

Applications

conjuntion point (i.e.in conjuction with +S,-S) with the sensing terminal.

b. The output terminal

on

the front and rear panels can be used, when checking

specifications, should make inspection according to the specifications step (a).

c. The power supply

4.2.15 Attentions

is

not suitable to use Model 614 AC voltage regulator.

in

Applications

a. Keep air flowing, when installing other instruments, should place them far

Fig.9

in

12

30cm from ventilator.

VR20

VR2

VR1

VR9

VR3

VR4

VR6

VR7

VR8

VR5

VR11

VR10

b. Prevent the instrument from placing c. The induced instrument can not be placed nearby the power supply.

in

dirty or poisonous cnvironment .

Maintenance

5.5.5.

Maintenance

and

Replacement

and

Replacement

5.1. Maintenance

5.1.1.Opening the cabinet, remove two screws

screws

on

each leftside, four screws

on

the top cover.

on

the front and rear panel and three

5.1.2.*Replacement of Fuse The fuse can not be used when

it is

more or less than the specified range,itshould

be φ 6x30 — 10A.

5.2. Adjustment

5.2.1. Setting Range of Output V oltage The CV control

OUTPUT switch, anexternal voltmeter

is

rotated fully counterclockwise step

is

used for monitoring, VR2

by

step, press down is

set to make the output to zero (allowable to set to 0.2V) The CV controlisrotated fully clockwise step step,

at

this time. note that the voltmeter indication

by

adjusting VR1, making CV control rotated fully clockwise and the output to 36~37V.

is

monitored externally, while rotating

5.2.2.Adjustment of the V oltmeter Indication (before power applied, first of all,

adjust zero point of machinism).

Turn off OUTPUT switch , the CV knob

is

set to 0V off the meter indication.

Turn of OUTPUT switch, VR11 set to 35V ,VR7 with the readings

is

set to make the output voltage

on

monitoring voltmeter.

Turn off OUTPUT switch, VR5

is

set to zero of the meter indication, the output

is

rotated fully counterclockwise, VR8

on

the voltmeterindicator

in

accordance

set to make the output voltage indication

accordance with the preset indication value.

by

is

in

Fjg. 11

5.2.3.Setting of Output Current Range

The CC control

variable resistor resistor will be shorted step c ontrol

is

rotated fully clockwise step

is

rotated fully counterclockwise, the voltage

is

connected to the ammter, turn

by

step.VR4

by

is

preset to 3~5V ,the

on

OUTPUT switch, the variable

is

set to make output current to zero, the CC

step to make indication of the external monitoring ammter to 20A (or a little larger ). The variable resistormust not be shorted, can use a lower resistance value.

5.2.4.Setting of Ammeter Indication (before power

is

applied, first, adjust

13

machinism point)

1 1 1 2

The CC control

is

off, VR10

RL

is

set to make the output to 20A, mean while VR9

Press down V/I CHECK, the indication of the ammter

),when they are unconformable, set VR6,the preset value

value

in

5.2.5.Repairment Normal troubles should be troubleshooted according to the following methods:

1. Power not applied. the indicating lamp does not light. Maybe something wrong with power line, poor contact, input fuse

2. The power on, but Maybe over — voltage protection voltage

regulator

3. Output voltage

Maybe built — misconnected, The output diode HF oscillation thus can shunt a capacitor to eliminate.

4. Output

Maybe the terminals (1) and (2) , (6) and (7) have dropped off, CV and CC potentiometers are open.

5. Output voltage and current are not controlled

The terminal defictive.

14. The output

Connection wires dropped off or misconnected, the voltage of the power supply has exceeded the specifified range, a special load causes oscillation, the sensing terminal contactisnot tight, should avoid strong electric — magnetic field nearby.

is

CV operation mode.

is

broken.

is

rotated fully counterclockwise, turn

set to make indication of the ammter to zero,

is

as

soon

as

OUTPUT switches on, the power

is

lower than the voltage output, individual

is

zero or lower.

in

output wires are loose and off. The function terminal

is

damaged, due to longer output lead line, resulting

too large.

by

the knobs.

on

the rear panel

is

not stable.

is

misconnected. May be control circuits are

on

OUTPUT switch, the load

in

connection with the load,

is

set to make indication to 2 0A.

also 20A (in CC operation mode

is

always more than output

is

broken..

is

off.

is

in

Completeness

6.6.6.

Completeness

1. Main Power Supply

2. Power Lead line

3. Operating Manual

4. Fuse Tube BGXP — φ 6x30 — 10A

5. Output Protection Board, T erminal and Protection Board

Quality

7.7.7.

Quality

After delivery within 18 months, if users abide storage and applications. but the quality of the product does not meet the specifications given, our factory

1. *P ARD 1mV(rms)

2. 5.5~40V range of over — voltage protection voltage

Warranty

is

the

ofofof

responsible for repaiment and replacement free of charge.

Instrument

the

Instrument

1 for each

by

regulations of transportation,

is

for Model DH1716-1~5, 2mV (rms) for Model DH1716-6

is

adjustable for Model.

14

DH1716-4 .The range of other models are

as

follows: Model DH1716-1~3: 5~20V Model DH1716-5: 8~65V Model DH1716-6: 15~110V

3.

Power consumption: 1.2KW for Model DH1716-4, Model DH 1716-2

than 1.2KW , other models are

all

less than this value.

4. Output power:700W for DH 1716-4, other models are

to rated output voltage and current value.

5. Dimensions: 230 × 160 × 550mm only for DH1716-3 and DH1716-4,larger or

smaller for other models.

6. Weight: About: 30kg for DH1716-3 and DH1716-4 only ; other models are

larger with increasing current.

7. Fuse tubes: except φ 6x30 – 15A for DH1716-2,others use φ 6x30 — 10A.

(For Model DH1716-6, a

5A

fuse tube

is

added).

8. Because the digital meters are produced

“ - ”

is

shown

symbol may be considered

in

different ways, while “ ”

as

incomplete. For example, “ -0.1 ” , i.e,

“ 0.1 ” . Here for Model DH1716-6,the accuracy of

9.

Model DH1716-7

is

an

expanded type.

is

expressed

all

computed according

by

different manufacturers, the symbol

as

“ - ”

in

partial meters, this

it is

expressed

its

digital meter

is

1% ± 3 digits.

is

more

as

DAHUA DH1716 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

CONTENTS