This Is How You Remove The Ppu - Siemens SINUMERIK 828D Service Manual

There are 2 additional LEDs "FAULT" and "SYNC" next to port 1, which apply to both ports:
Name
FAULT
SYNC *)
4.1.2

This is how you remove the PPU

Removing
The following description refers to both versions (vertical/horizontal).
Precondition:
For this description, it is assumed that the PPU has been completely connected.
Procedure:
1. Switch-off the control: Completely switch off the system. Check that the system is in a no-
2. Access the control panel/control cabinet where the PPU is installed.
3. Use a multimeter to check that the system really is in a no-voltage condition (isolated
4. If it has not already been done, label all connectors that lead to the module now.
5. Only then, can it be ensured that the cables are not interchanged.
6. Withdraw the power supply X1.
7. Withdraw the digital input/output terminals X122, X132, X142.
Hardware and Software
Service Manual, 03/2010, 6FC5397-5DP20-0BA0
Color State
Red OFF
Is lit
Flashing
(2 Hz)
Green OFF
Is lit
Flashing
(0.5 Hz)
voltage condition and is locked-out so that it cannot be switched on again without the
appropriate authorization.
from the supply).
Meaning
The data exchange to all configured IO devices runs without
errors.
Bus fault:
No physical connection to a subnet/switch

Incorrect transmission rate

Full duplex transmission is not activated.

Failure of a connected I/O device

At least one of the assigned IO devices cannot be

addressed.
Incorrect or no configuration.

Task system of the SINUMERIK 828D is not synchronized to the
send clock of the PLC I/O interface based on PROFINET IO. An
internal substitute clock of the same size as the send clock will
be generated.
Task system of the SINUMERIK 828D has synchronized to the
clock of the PLC I/O interface based on PROFINET IO, data is
being exchanged.
Task system of the SINUMERIK 828D has synchronized to the
clock of the PLC I/O interface based on PROFINET IO, data is
being cyclically exchanged.
Service cases - hardware
4.1 PPU26x/PPU28x
73