SG_FSE_SiplaceHF_HF3_00193901-05_eng - 第487页

1 - 13 S tudent Guide SIPLACE HF/HF3 Edition 09/2005 1 1 MTC 2 13 1 1.1.6 Safety features 1 1.1.6.1 Protective doors Both towers have a prote ctive door . When you open the protective door , the tower is powered down. Th…

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Student Guide SIPLACE HF/HF3
11 MTC 2 Edition 09/2005
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11.1.5.2 Safety instructions for transporting the MTC 2
➠ The MTC 2 should only be transported over any significant distance using a suitable pallet jack
or fork lift truck.
➠ If the fork lift or pallet jack has adjustable forks, the MTC 2 must be lifted at the extremities of
the guide rails.
➠ The forks should only be inserted into the guides from the side on which tower 1 is located.
➠ Follow the instructions in section 3.1 ”Transporting the MTC 2".
Fig. 11.1 - 17 Safety instructions for transporting the MTC 2
Key
1. Guides
11.1.5.3 Residual voltages at the inverters when the MTC 2 is switched off
After switching off the MTC 2
– by pressing the EMERGENCY STOP button,
– by opening a protective door or
– via the SIPLACE station
it takes about 5 minutes before the intermediate-circuit voltages of the inverters have discharged
down to non-hazardous residual voltages.
When the MTC 2 is switched off, the contactor safety combinations continue to be supplied with
24 VAC from the SIPLACE station.
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Student Guide SIPLACE HF/HF3
Edition 09/2005 11 MTC 2
13
11.1.6 Safety features
11.1.6.1 Protective doors
Both towers have a protective door. When you open the protective door, the tower is powered
down. The following error message appears: “Tower x: Protective cover not closed”. The other
tower continues to work until it completes its cycle. Once the protective door is closed, the cycle
must be restarted.
CAUTION
Do not open the protective doors of the MTC 2 unless you are informed to do so on the screen of
the station computer or when the MTC 2 has been switched off.
Fig. 11.1 - 18 Protective doors
Key
1. Protective doors
2. Recessed handles
11.1.6.2 EMERGENCY STOP button
The EMERGENCY STOP button is a self-latching combination and designed with bypass protec-
tion according to EN 418. This red, mushroom-shaped button remains depressed when you press
it.
When you press the EMERGENCY STOP button, the entire line with SIPLACE station and MTC
2 is immediately stopped. Placement is interrupted and, once the machine is in working order
again, can be resumed or canceled. Watch out for any incompletely assembled printed circuit
boards.
Pressing the EMERGENCY STOP button opens the two switching contacts of the safety circuits;
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Student Guide SIPLACE HF/HF3
11 MTC 2 Edition 09/2005
14
the relevant safety combination is triggered. The intermediate-circuit voltages (500 V) for the in-
verters are disconnected. Both the lifting and feed axes are deactivated while the logic circuitry of
the inverters continues to be supplied with 24 V DC. The message “EMERGENCY STOP actu-
ated” appears.
Fig. 11.1 - 19 Location of the EMERGENCY STOP button
Key
1. EMERGENCY STOP button
11.1.6.3 Protective door switches
These switches check whether the two protective doors are closed. If the doors are closed, the
safety contact and the signaling contact are closed. When one of the doors is opened, the safety
circuit and the signaling circuit are opened. The corresponding safety combination is triggered and
the tower is powered down. The following error message appears: “Tower x: Protective cover not
closed”.
Fig. 11.1 - 20 Position of the protective door switches
Key
1. Protective door switches
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1
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