9 Diagnosis
9.1 Diagnosis Messages when Booting the Device
Displayed
message
Diagnosis
8.8.8.8. This message will show up once the power is on, which detects the operating panel.
P.oFF
This message will show up when there is something wrong with the startup (supply volt-
age is too weak or with defective softstart resistor), and the relay will not be switched
on.
ESS- This message will show up when the input voltage is too low or not stable at startup.
OE-4 This message will show up when the input voltage is too high at startup.
FFE-
This message shows up when there is a firmware mismatching problem after successful
startup. For possible reasons and solutions, please see chapter 9.5 "Diagnosis on Er-
rors" on page 126.
"Monitoring
parameter"
Monitoring parameters will be displayed on panel after a successful startup, which are
decided by b0.30 and b0.31.
9.2 Diagnosis on Parameter Backup
For EFC 3600, all user parameter settings can be saved as backup to and read
out from the operating panel.
Displayed message Diagnosis
"-""--""---""----" During backup…
b0.20 Backup complete
EEPr Backup failed
9.3 Diagnosis for Power Down/Drop
9.3.1 In Stop State
Displayed message
P.oFF
If the DC bus voltage drops down below a certain value under the following two
situations, the messages above will show up:
1. Normal power down: this will cause DC bus voltage down below the under-
voltage threshold along with this message.
2. Sudden power drop: this will cause that DC bus voltage drops at first
down below the undervoltage threshold along with this message but then
recovers before CPU voltage dropped to power down level, soft restart will
be activated again and this message will be reset automatically.
Bosch Rexroth AG
Diagnosis
EFC 3600
124/259
DOK-RCON03-EFC-3600***-IT03-EN-P
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