HEIDENHAIN TNC151B Betriebsanleitung

HEIDENHAIN

DR.JOHANNES HEIDENHAIN GmbH

D-6225 Traunreut ‘Tel. (08669) 31-O

Kundendienst

Service Instructions

TNC x51/155 B/Q

Subject to change (without notice)

DR. JOHANNES HEIDENHAIN GmbH is constantly working on further

developments of its TNC Controls. It is therefore possible

that details of your Control may differ slightly from those

described herein. If that is the case please order a suitably

revised issue of the Service Manual.

Copying/Duplication

This manual is provided subject to the condition that no part

of it shall be reproduced in any form or by any means without

our prior consent in writing.

Issue: 04/88

HtlUtNHAlN

u DF JOHANNES HElDENHAlN GmbH

- D 8225 Traunreut ‘Tel. (08669) 31-O

SERVICE MANUAL TNC 151/155

Page 1

Kundendienst

contents

2. use of the service Manual

Fault Diagnosis Page 2

" 3

2.1 Procedure for fault-finding " 3

2.2 Flow diagrams for fault location 1‘ 4

2.2.1 Fault diagnosis for the complete installation " 4

2.2.2 Use of the integrated supervision system " 5

2.2.3 Testing of the VDU and associated circuitry 1' 14

2.2.4 Testing of the Power Supply Unit " 15

2.2.5 Testing of the measuring systems and wiring " 17

2.2.6 Burn-In Test " 18

3. Exchange Information

3.1 Exchanging Control units

3.1.1 Procedure for exchanging the TNC 151/155 B/F Control

3.1.2 Procedure for exchanging the TNC 151/155 Q/W Control

3.1.3 Procedure for exchanging the PIG I/O Board of the PL lOO/llO B

3.2 Board Exchange

3.3 Software Exchange

3.4 Replacement Parts, Loan/Exchange/Service Units

3.5 Confiqurations Liste

4. Additional Information " 50

4.1 Block Diagram Description " 50

4.2 Block Diagrams TNC 151/155 " 55

4.3 Wiring Diagrams " 68

4.4 Machine Parameters " 73

lltlUtNHAlN

F!!!

DR. JOHANNES HEIDENHAJN GmbH

- D-8225Traunreut

.Tel.(08669) 31-O

Kundendienst

Use

the

Service

Manual TNC 151/155

In order to determine the fault condition on an

machine,

a fundamental knowledge of the machine and the drives is

necessary, as well a a knowledge of their interaction with

the Control and measuring system. In addition, improper use

of the Control, such as incorrect

programming or incorrect

selection of machine parameters can lead to

the occurrence

of fault conditions. Further information in this respect can

he found in:

-Operating Manual

.Mcmnting Instructions and Interface Circuit Control-Machine

.PLC-Description

SERVICE MANUAL TNC 151/155

Page 2

Section 1

The TNC 151/155 Service Manual is used for the diagnosis,

localisation and remedying of faults on TNC controlled

machines. In section 2, Fault Diagnosis, a set of flowcharts

enables the user to pinpoint the scmrce of a fault

from

its

symptoms.

An integrated supervision system and a Burn-In Test Program

specifically developed for testing the Control can aid in

the location of faults.

Important guidance for the exchange of entire Controls,

individual hoards, or software is given in section 3,

Exchange Information.

Section 4. Additional Information, contains a block dia-

gram of the Control, a wiring diagram for each version of

the Control, and a list of machine parameters with permis-

sible entry values.

Kundendienst

2. Fault Diagnosis

2.1 Procedure for fault-finding

To locate and rectify a fault that has arisen in a TNC in-

stallation, it is of foremost

importance to analyse

the be-

haviour of the system as a whole: that is, the TNC Control,

the machine-tool and the measuring system.

2.2.1 shows, in flow diagram form, the procedure for exam-

ining the complete installation.

In addition, the HEIDENWGN TNC 151/155 Contouring ContrOl

includes an extensive integrated supervision system for the

avoidance of entry/operator faults and for the recognition

and diagnosis of technical defects in the installation

(see section 2.2.2)

The Burn-In Test Program can be used as further support in

fault localizing and in the dynamic testing of the Control's

hardware (see section 2.2.6).

SERVICE MANUAL TNC 151/155

Page 3

Section 2/2.1

HCIUCNHAIN

DR. JOHANNES HElMNHAlN GmbH

D-8225 Traunteut .Tel. (08669) 31-O

Kundendienst

SERVICE MANUAL TNC 151/155

Page 4

Section 2.2/2.2-l

2.2 Flow diagrams for fault location

2.2.1 Fault diagnosis for the complete installation

(Control/Measuring System/Machine-tool)

HtlUtNHAlN

DR. JOHANNES HEIDENHAN GmbH

D-6225 Traunreut .Tel. (08669) 31-O

SERVICE MANUAL TNC 151/155

paae 5

Kundendienst

Section 2.2.2

2.2.2 Use of the integrated supervision system

The TNC 151/155 incorporates an extensive integrated super-

vision system for the avoidance of operator-errors end the

detection and diagnosis of technical faults in the TNC

installation (ie the installation comprising the TNC, the

machine-tool and the measuring system).

The supervision system is made up of a mixture of hardware

and software within the TNC, and operates continuously whilst

the TNC is switched on. If a fault is detected, or if~an

operator-error occurs, a message will be displayed, indi-

cating (in abbreviated form) the nature of the problem.

example of operator-error:

a) KEY NON-FUNCTIONAL

b) ENTRY VALUE INCORRECT

example of fault with TNC internal electronics:

a) TNC OPERATING TEMP. EXCEEDED

b) EXCHANGE BUFFER BATTERY

c) TNC ELECTRONICS DEFECTIVE O...3/A...K

example of fault with measuring system:

X-MEASURING SYSTEM DEFECTIVE

example of fault on machine-tool:

GROSS POSITIONING ERROR A

The system distinguishes between what are considered to be

harmless errors and serious faults, in that faults are shown

es flashing displays. Examples of faults are measuring system

faults, drive faults and faults in the TNC's internal elec-

tronics. The occurrence of a fault leads to the machine being

switched off via the emergency-stop contactor. The fault must

then be rectified before the TNC is switched on again.

Flashing fault messages l'NC 151/l%

AXIS X/Y/Z/4 MEAS. SYSTEM DEFECTIVE

EMERGENCY STOP DEFECTIVE

WRONG REFERENCE POINT

EMERGENCY STOP PLC

GROSS POSITIONING ERROR A/B/C/D

TNC OPERATING TEMP. EXCEEDED

ERROR IN PLC PROGRAM A...Q

TNC ELECTRONICS DEFECTIVE O...3/A...K

CHECK SUN ERROR XXOO...XXFF

The significance of these fault messages is explained on

pages 8 to 13.

error message can be cleared by pressing the

after which normal operation may resume.

is given on page 7.

SERVICE MANUAL TNC 151/155

Pawa 6

Kundendienst

Se&ion 2.2.2

Error message "BXCBAUGB BUFFER BATTBRY"

Particular mention should also be made about the implications

of the instruction to exchange the buffer battery:

If the dialog display indicates "EXCHANGE BUFFER BATTERY",

new batteries must be inserted within one week.

The buffer battery compartment is located behind the screw

cover in the lower left-hand corner of the operating panel.

When exchanging the batteries, special care should be taken

that the polarity is correct (POS-pale of battery outwards).

The battery needs to have IEC designation "LR 6" and must be

of the leak-proof type. We especially recommend the use of

VARTA Alkaline batteries type "4006". With discharged (or

missing) buffer batteries, the memory for the machine para-

meters

and for the user-program will

supported only as long

as the mains remains switched on. Continued operation is still

possible but the memory contents will become erased in the

event of a mains failure. Please note that the TNC has to be

switched on when exchanging the buffer batteries. If a mains

failure occurs during a battery change (or when the battery is

discharged or missing), the re-entry of the machine para-

meters

and the user-program will be necessary.

Use of the integrated supervision system

HEIDENHAIN

DR.JOHANNES HEIDENHAIN GmbH

D-8225

Traunreut'Tel.(08669)31-0

Kundendienst

Error messages Twc 151/155

The meanings of many of these error messages are explained in:

- Operating Manual

- Mounting Instructions and Interface Circuit Control-Machine

- PI&Description

KEY NON-FUNCTIONAL

PROGRAM MEMORY EXCEEDED

SEARCH ADDRESS MISSING

TOOL DEF ‘$ NOT PERMITTED

PROGRAM NUMBER ON TAPE ALLOCATED

JUMP TO LABEL 0 NOT PERMITTED

ENTRY VALUE INCORRECT

CC-BLCCK MISSING

CIRCLE END POS. INCORRECT

TOOL DEF MISSING

TOOL CALL MISSING

LABEL NUMBER NC'I' ALLOCATED

EXCESSIVE SUPROGRANMING

ANGLE REFERENCE MISSING

PLANE WRONGLY DEFINED

TOOL RADIUS TOO LARGE

ROUNDING RADIUS Too LARGE

PATH OFFSET WRONGLY STARTED

PATH OFFSET WRONGLY ENDED

ROUNDING-OFF UNDFINED

ROUNDING-OFF NOT PERMITTED

AXIS DOUBLE PROGRAMMED

WRONG RPM

NO EDITING OF RUNNING PGM

RADIUS COMP. UNDEFINED

LIMIT SWITCH X+

LIMIT SWITCH X-

LIMIT SWITCH Y+

LIMIT SWITCH Y-

LIMIT SWITCH AXIS Z+

LIMIT SWITCH AXIS Z-

LIMIT SWITCH AXIS 4+

LIMIT SWITCH AXIS 4-

EXCHANGE BUFFER BATTERY

TRANSFERRED DATA INCORRECT

ME: CASSETTE MISSING

ME: CASSETTE LOClcED

NE: WRONG MODE SELECTED

ME: WRONG PROGRAM DATA

ME: CASSETTE EMPTY

ME: PROGRAM INCOMPLETE

ME: TAPE END

WRONG PROGRAM DATA

MACHINE PARAMETER INCOMPLETE

EXT. IN-/OUTPUT NOT READY

MIRROR IMAGE ON TOOL AXIS

WRONG AXIS PROGRAMMED

WRONG SIGN PROGRAMMED

SPINDEL ROTATES MISSING

SLOT WIDTH TCO LARGE

CYCLE INCOMPLETE

SELECTED BLOCK NOT ADDRESSED

PROGRAM START UNDEFINED

POSITIONING ERROR

EMERGENCY STOP

ARITHMETICAL ERROR

OPERATION PARAMETERS ERASED

3D-INTERPOLATION NOT PERMITTED

SERVICE MANUAL TNC 151/155

Page 7

Section 2.2.2

FURTHER PROGRAM ENTRY IMPOSSIBLE

PROGRAM NUMBER UNAVAILABLE

PROGRAM NUMBER ALLOCATED

LABEL NUMBER ALLOCATED

TOOL NUMBER ALLOCATED

RELAY EXT. DC VOLTAGE MISSING

POWER INTERRUPTED

PGM XXXXXXXX

UNAVAILABLE

TN0 TOOL DEF XXX WITH PGM CALL

CIRCLE CENTP.E UNDEFINED XXXX

ADDRESS LETTER ALREADY ASSIGNED

BLCCKTOO LONG

G-CODE GROUP ALREADY ALICCATED

ILLEGAL G-CODE

BLCCK NUMBER ALREADY ALLOCATED

BLOCK FORMAT INCORRECT

N-CODE MISSING

BLK FORM DEFINITION INCORRECT

PGM-SECTION CANNOT BE SHOWN

TOO MANY USER PARAMETERS

PROTECTED PGM

ILLEGAL NC-BLOCK

CHAMFER NOT ALLOWED

FAULT IN PLC PROGRAM

HEIDENHAIN

DR.JOHANNES HEIDENHAJN GmbH

D-8225 Traunreut .Tel. (08669) 31-O

SERVICE MANUAL TNC 151/155

Pase 8

Kundendienst Se&ion 2.2.2

Fault descriptions TNC 151/155

VDU Display (flashing)

TRANSDUCER X DEFECT A

TRANSDUCER Y DEFECT A

TRANSDUCER Z DEFECT A

TRANSDUCER S DEFECT A

TRANSDUCER X DEFECT B

TRANSDUCER Y DEFECT B

TRANSDUCER Z DEFECT B

TRANSDUCER S DEFECT B

EMERGENCY STOP DEFECTIVE

WRONG REFERENCE POINT

Fault cause

Fault code: A = signal amplitude fault

B = signal frequency fault

.Measuring system not connected

.Cable damaged

.Glass scale dirty or damaged

.Scanning head damaged

.Measuring system supervision damaged

.Fault in the emergency stop

circuit of the machine (for checking

routine see Mounting Instructions and

Interface Circuit Control-Machine

manual

.Defect in Control's internal Emergency

Stop supervision

.Traversed-over reference point lies

outside of the reference point end

position (also see Mounting Instruc-

tions and Interface Circuit Control

Machine

.Defect in Control/machine interface

Possible fault location

Measuring system

Analog Board

PI& I/O Board (TNC 151/155 Q)

PIC Interface Board (TNC 151/155 Q)

SE Board (TNC 151/155 B)

Terminal Board (TNC 151/155 B)

Machine (cams/switches

"reference end-position" or "reference

pulse inhibit")

PIG I/O Board (TMC 151/155 Q)

PIG Interface Board (TNC 151/155 Q)

SE Board (TN'2 151/155 B)

Ter minal Board (TNC 151/155 B)

~EIDENHAIN

DR.JOHANNES HEIDENHAIN GmbH

D 8225 Traunreut .Tel.(O8669)31-0

SERVICE MANUAL TNC 151/155

Paqe 9

Kundendienst Se&ion 2.2.2

VDU Display (flashing)

EMERGENCY-STOP$I;tii

GROSSPOSITIONING ERRORA

Fault cause

With standard PLC program, faulty reply

from output A6 ("Lock for spindle on") to

input E20 ("reply: Lock for spindle on")

Fault message EMERGENCY-STOPPLC

appears only when no additional PLC marker

is set for

the

fault message

.Trailing error greater than value

entered in MP 174.

(see Mounting Instructions and Interface

Circuit Control-Machine manual

.Deviation from the intended position at

standstill greater than the value entered

in MP 169

(see Mounting Instructions and Interface

Circuit Control-Machine manual

.Exceeding the range for the continuous po-

sition supervision determined by MP 57.

(see Mounting Instructions and Interface

Circuit Control-Machine manual

.Relationship between output voltage and

traversed distance outside of the defined

tolerance.

-Defect in the pulse counting section (Con-

trol circuitry) after the transducer signal

supervision

Possible fault location

Terminal hoard (TNC 151/155 B)

In the Case of Gross Positioning Errors

A/B/C/D the fault could lie with any

element in the closed loop servo system.

ie Control hardware (CLP Processor/

Graphics Bra.),

Control hardware (Analog Brd.),

servo amplifier (offset voltages),

n II (gain too low),

motor,

tacho,

measuring system,

external forces acting on drives,

inappropriate MP values prograuaned.

Aid:

1. Program

54 (acceleration) as

small as possible.

2. Adjust rapid traverse (as small a

trailing error as possible).

3. Gradually increase MP 54.

If this does not help:

fault in the Control hardware (closed

loop) or in the machine

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