Siemens SIMATIC C7-635, Manual

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Maintenance
5-2
C7-635 Control System
A5E00155581-04
5.2 Replacing the C7-635
Introduction
A C7-635 is not designed for onsite repair. Therefore, a defective C7-635 must be
replaced.
To save the configuration of the TP/OP, you should have a Compact Flash Card
(CF Card). You should make a backup of the configuration on the CF card as soon
as you have finished commissioning the device, so that you can restore the
configuration if the device becomes defective.
!
Caution
Prior to installing and uninstalling the device, remove the Micro Memory Card
(MMC) of the CPU and the Compact Flash Card (CF Card) of the TP/OP.
The inserted CF card protrudes from the C7-635 and could therefore be damaged.
How you proceed depends on whether you have backed up the TP/OP
configuration on a CF Card.
With CF Card
Requirements
• You have inserted a CF Card.
• You have a new gasket. The gasket must be replaced each time the C7-635 is
installed or uninstalled. The gasket is part of the service pack (see
Section 2.2).
Assembly
Step Action
1. Create a backup of the TP/OP configuration on the CF card. You should create
the backup immediately prior to uninstalling the device so that current data
(such as recipes) are included. Refer to the “Touch Panel TP170 A, TP 170 B,
Operator Panel OP170 B“ manual for information about how to make a backup
copy.
2. You do not need to take special action to back up the user program on the CPU.
It is saved as a non-volatile program on the MMC.
3. Switch off the power supply.
4. Loosen the cables from the shielding terminals and remove all connectors.
5. Remove the MMC and the CF Card.
6. Loosen the mounting supports with a screwdriver and remove the device from
the control cabinet.