1 Prerequisites and Visual Inspection 06.93
1.2.5 Cables
1.2.5 Cables
Check all cables in accordance with the cable and equipment overview (refer to Interface
Description, Part 2). This applies particularly to cables made up by the customer.
A random check should be made on at least one connector. Particular attention should be paid
to elastomeric connections.
In the event of failure to comply with our guidelines, the relevant dealer must be notified and
any necessary corrective measures instigated.
1.2.6 Shielding
The overall shields of all cables running to or from the control must be grounded at the control
via the connectors (refer to Interface Description, Part 2). Only SINUMERIK connectors may
be used, as other connectors cause interference problems.
1.2.7 Interference suppression
All d.c. and a.c. relays must be interference-suppressed using suitable means, as must a.c. or
three-phase motors (e.g. lubricating pumps and the like). Observance of the prescribed
measures for interference suppression should be checked on a random basis (also refer to the
Instruction Manual).
1.2.8 Operator panel
Check to make sure that pushbuttons, keys, lamps, symbols and display are operational.
1.2.9 Overall state
Check the module mounts and blanking plates.
Make sure that the front panel screws have been tightened (ground connection).
Check to see that the accessory pack is complete.
The accessory pack must contain the following:
• Log book
• Complete parts list (the parts list is included with the original delivery note and must be
inserted in the log book)
• Transparent cover plates and symbol overlays for keys
• Instruction manual
1–4
© Siemens AG 1992 All Rights Reserved 6FC5197- AA50
SINUMERIK 840C (IA)
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