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7 Power Supply 7.11 Analysis - Common Error List Technical Training FSE SIPLACE TX-Series 01/2018 111 Error Possible Cause Action Short reaction of CSB after START pressed ● Check precharge current at 300 V DC link volta…

7 Power Supply

7.11 Analysis - Common Error List

110 Technical Training FSE SIPLACE TX-Series 01/2018

7.11 Analysis - Common Error List

Error Possible Cause Action

No reaction after

START pressed

Duration of pressing and release of

START button

●

Press longer than 200 ms and

shorter than 1500 ms.

START should be accepted on

pushbutton release.

Safety loop closed?

●

Check if both channels of

safety loop show closed con-

dition

SW_CTRL_ON output of IO miss-

ing?

●

Check: (X29.A6) should be

HIGH if START is pressed

●

Check IO wiring.

●

Check IO output.

●

Check START button wiring.

If output is missing:

●

Replace IO unit

●

Fix START button wiring.

Connection to PCB FD.A1 estab-

lished?

●

Check connectors X24A and

X24B at FD.A1 and at PCB

CSB

●

Place connectors firm in posi-

tion.

Ground connection of PCB CSB

missing?

●

Connect terminal lug to

Ground terminal of CSB.

Supply voltage of CSB missing?

●

Check fuses F12 and F13.

●

Replace fuses F12 and F13, if

needed.

Signal PCC-POWER-OK (X24B.5

at PCB,LED at K5)

If voltage reading > 22V or Power

OK LED of K5 is on→ internal de-

fect of CSB:

●

Replace unit

24V Measure input voltage

(X24B.3)

If voltage reading > 22V → internal

defect of CSB:

●

Replace unit

Power connectors of CAP and CSB Connectors should be firm in posi-

tion.

 DANGER!

If you check connectors

mind the dangerous

voltage!

7 Power Supply

7.11 Analysis - Common Error List

Technical Training FSE SIPLACE TX-Series 01/2018 111

Error Possible Cause Action

Short reaction of CSB

after START pressed

●

Check precharge current at

300 V DC link voltage

If there is no precharge current

(max 10A):

●

Check GND connection of

CSB

Ground connection of PCB CSB

missing?

●

Connect terminal lug to

Ground terminal of CSB.

If there is GND connection estab-

lished:

→ internal defect of CSB;

●

Replace unit

Overload or short circuit at 160 V

DC link output?

●

Remove X24B and try to start.

If Start is working now fix short cir-

cuit conditions at 160V DC link

branch

Overload or short circuit at 300 V

DC link voltage?

●

Remove X21 and X22 and try

to start.

If Start is working now fix short cir-

cuit conditions at 300V DC link

branch

Machine is passing ref-

erence run but stops at

beginning the of pro-

duction run

MGCU Error Message: Under-

voltage error at DC link voltage?

●

Check capacitor value of CAP

unit (service screen of dia-

gnostic functions) has to be >

30 mF

If Capacitor value < 30 mF:

●

Replace capacitor unit

●

Check QT40.999 error mes-

sages at service screen

If QT40 error is shown:

●

Replace QT40 unit.

Service screen QT40 unit

●

Check indicator lights at

QT40-999:

Green light (>220V) should be on

during reference run

red light should be on temporary

during gantry acceleration period

DC 42V-S is missing

(Conveyor supply)

Fuse does not work?

Connector X24A (both PCB’s!)

properly connected?

●

Check supply voltage at

FD.A1, F16

Fuse blown or broken?

●

Replace fuse

●

Place connector firm into

place

If error still occurs

→ internal defect of CS:

●

Replace unit

7 Power Supply

7.12 US option

112 Technical Training FSE SIPLACE TX-Series 01/2018

Error Possible Cause Action

DC24-S is missing Fuse does not work?

Connector X24A (both PCB’s!)

properly connected?

●

Check supply voltage at

FD.A1, F11

Fuse blown or broken?

●

Replace fuse

●

Place connector firm into

place

If error still occurs

→ internal defect of CSB:

●

Replace unit

POWER-Enabled sig-

nal is missing

Fuse does not work?

Connector X24A (both PCB’s!)

properly connected?

Precharge sequence finished?

DC link voltages are ON)?

●

Check supply voltage at

FD.A1, F11

Fuse blown or broken?

●

Replace fuse

●

Place connector firm into

place

If error still occurs

→ internal defect of CSB:

●

Replace unit

Errors at diagnostic interface:

Error Possible Cause Action

No diagnostic display

(Icon is missing)

Wiring of diagnostic master:

●

Connection between PS1 and

CAP established?

●

Connection between CAP and

IOCU2 established (use cros-

sover cable!)?

●

Replace wiring.

If there is still no Diagnostic display

available → Diagnostic master at

CAP unit failure:

●

Replace CAP unit

●

QT40 diagnostic supply

voltage available?

●

Internal fuse at CAP unit

blown?

Voltage reading between Pin 1 and

4 of diagnostic connector should be

DC 5V

●

Check QT40 diagnostic supply

voltage.

●

Check internal fuse at CAP

unit.

●

Check voltage reading

between Pins 1 and 4 of dia-

gnostic connector.

If there is no voltage reading →

CAP unit failure:

●

Replace CAP unit

No fuse diagnostic dis-

play

Wiring to FD.A1:

Connection between FD.A1 and

IOCU2 establisched?

●

Check if FD.A1-X3 is located

firm in its place.

If not:

●

Replace wiring

If there is still no Fuse diagnostics

available:

→ FD.A1 internal error.

●

Replace FD.A1

7.12 US option

All the power packs used in the SMPS of series QT40 have a permissible input voltage of 380V –

480V.