Cebora SPOT 3500 Service Manual download pdf (Page 12)

CEBORA S.p.A. 12

3.302.047 21/12/00

Correct?

3.3.4 - In resistive load operation, the output voltage is not regular.

NOTE

For the following tests use a resistive load capable of circulating a current greater than 100

Aac, for example 0.02 ohm, and capable of supporting the consequent current, considering that

the rated open-circuit output voltage is approximately 7 Vac.

OUTPUT VOLTAGE TEST ON RESISTIVE LOAD.

Type of

operation

Switch

lever (1)

position

Switch

lever (11)

position

Potentiometer

(2) position

Potentiometer

(3) position

Output

voltage

Vac

Waveform

manual Right - - at minimum 2 fig. 5.2.2

manual Right - - at maximum 7 fig. 5.2.3

automatic,

pulse train

Left down at minimum - - fig. 5.2.4

automatic,

single stroke

Left up at maximum - - fig. 5.2.5

automatic Left - at minimum - - fig. 5.2.6

MANUAL MODE TEST.

q Switch (1) in manual mode (lever to the right), power source output terminals = voltage

values and waveforms as in the table, with start button pressed.

q Holding down the start button, turn the potentiometer (3) and make sure the line of the output

voltage waveform changes in a linear, non-abrupt fashion, between the minimum and

maximum values of fig. 5.2.2 and 5.2.3.

YES

♦ Check the wiring between connector CN4 on the control board (27) and static

switch (14).

♦ Check the wiring between the switch (1) and connector CN3, control board (27):

CN3, terminals 1 and 2 = 0 ohm (contact closed), terminals 3 and 4 = > kohm

(contact open) = manual mode.

If incorrect, check the status of the switch (1) and replace if defective.

♦ Check the connections between the secondary transformer circuit (26) and output

terminals of the power source. If you find loose or burnt connections, clean

thoroughly and tighten, or replace any damaged terminals or components.

♦ Replace static switch (14).

♦ Replace control board (27).

AUTOMATIC PULSE TRAIN OPERATING MODE TEST.

q Switch (1) in automatic mode (lever to the left), switch (11) in pulse train mode (lever

down), power source output terminals = waveform as in fig. 5.2.4, with start button pressed.

q Holding down the start button, turn the potentiometer (2) and make sure the pulse packet

length changes to the maximum duration of 1 second per packet (the pause between the pulse

packets remains constant, 400 msec.).

1 2 ... 7 8 9 10 11 12 13 14 15 16 17 18

Comments to this Manuals

IBRAHIM KONATE 09 Jun 2024 | 01:14:14

IBRAHIM KONATE 09 Jun 2024 | 01:14:51

Cebora SPOT 3500 Service Manual Page 12

Comments to this Manuals

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