HS50 HS60 维修手册2(4)

3.3

3.3.1

Replacing parts

Safety instructions

DANGER The placement system is supplied with 3 x 400 VAC (or 3 x 204 3 VAC / 3 x 230 VAC / 3 x 380 VAC / 3 x 415 VAC) ± 5 %, 50/60 Hz main power voltage. – Consequently, parts of the system carry potentially lethal voltages, even when switched off at the main switch. – Incorrect handling of the placement system can therefore result in death or severe injury or considerable damage to equipment. – Measurements and repairs must always be carried out by appropriately qualified personnel. – Always follow the safety instructions in section 2 of this manual. – Always follow the applicable accident prevention and VDE regulations (particularly DIN EN 60 204 part 1) or the regulations specific to your country. – Before starting any repairs, switch off at the main switch and disconnect the placement system from the main power supply. – Secure the system to prevent it being switched on again. If these instructions are not followed, it is possible to touch live parts, which could result in death or severe injury. 3.3.2 Preparing the power supply unit for replacing parts ? End all placement operations on the placement system. ? Shut down the Windows NT operating system correctly, otherwise problems may occur when restarting or data may be lost. ? Switch the placement system off at the main switch. ? Disconnect the placement system from the main power supply. ? Secure the placement system to prevent it being switched on again and put up a sign to indi- cate that servicing work is being carried out (see section 2, Operational safety). ? Open the safety doors with the double-bit key. ? Loosen the M8 hexagon socket-head screw fixing the unit to the underside of the front panel (see Fig. 3.3 - 1 on page 3 - 29). 28 03/2003 Edition Student Guide HS-50 / HS-60 Advanced II 3 Power Supply 3 Carefully remove the unit Make sure that the cable does not get caught up Be careful not to damage the insulation Fig. 3.3 - 1 M8 hexagon socket-head screw for fixing the units 3.3.3 What to do on completion of the servicing work ? Fit the power supply unit and fix in place with the M8 hexagon socket-head screw ? Make sure that you do not squash the cable when inserting the board ? Lock the safety doors ? Remove the key and keep in a safe place 3 3.3.4 3.3.4.1 Replacing the main switch S1 (00342395-01) Tools and equipment – Set of slotted-head screwdrivers – Set of DIN 911 Allen keys – Digital multimeter – Self-adhesive labels – HS-50 detailed circuit diagrams 3 3.3.4.2 Parts 32C4/3-pole/40A main switch, item number 00342395-01 3 3 Student Guide HS-50 / HS-60 Advanced II 3 Power Supply 03/2003 Edition 29 3.3.4.3

Removing the main switch

DANGER

Switch off the placement system and disconnect from the power

3

supply (see sections 3.3.1 and 3.3.2).

3 Fig. 3.3 - 2 Removing the main switch S1 ? Use the screwdriver to bend back the lug (A) of the touch guard (1) slightly and then pull the guard up and off. ? Loosen and remove the cable clamping screws (2) one by one and identify with adhesive la- bels. Input Cable colour brown Output black 30 03/2003 Edition Student Guide HS-50 / HS-60 Advanced II 3 Power Supply ? Loosen the M5 hexagon socket-head screws (3) and remove the switch.

3.3.4.4 Fitting the main switch

? Fix the main switch in place using M5 hexagon socket-head screws (3). ? Reconnect the labelled cables.

? Use the digital voltmeter to measure the voltages at terminals L1, L2, L3 or T1, T2 and T3. ? Switch off the placement system and disconnect from the power supply (see sections 3.3.1 and 3.3.2). ? Replace the touch guard (item 1 in Fig. 3.3 - 2 on page 3 - 30) over the main switch. ? Complete the servicing work as described in section 3.3.3 on page 3 - 29. 3 3.3.5 3.3.5.1 Replacing the motor trip block (MS1A) (00342495-01, 00342496-01) Tools and equipment – Set of slotted-head screwdrivers – Digital multimeter – HS-50 detailed circuit diagrams 3.3.5.2 Parts Designation Motor trip block ZM-16-PKZ2 for 3 x 380 VAC / 3 x 400 VAC / 3 x 415 VAC main power connection Motor trip block ZM-32-PKZ2 for 3 x 204 VAC for USA / 3 x 230 VAC Item number 00342495-01 00342496-01 3 3.3.5.3 Removing the motor trip block DANGER Switch off the placement system and disconnect from the power 3 supply (see sections 3.3.1 and 3.3.2). Student Guide HS-50 / HS-60 Advanced II 3 Power Supply 03/2003 Edition 31 3 Turn the switch (1) counter-clockwise to position \ Fig. 3.3 - 3 Removing motor trip block MS1 3 3 Fold down the safety flap (2) 3 Fig. 3.3 - 4 Folding down the safety flap 32 03/2003 Edition Student Guide HS-50 / HS-60 Advanced II 3 Power Supply

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