Phase loss protection
Error code 'IPH.L' is displayed on the operating panel in case of input phase loss
error occurs; error code 'OPH.L' is displayed on the operating panel in case of
output phase loss error occurs.
Code
Name
Setting range
Default
Min.
Attri.
C0.28 Phase loss protection mode 0...3
3
–
Run
●
0: Both input and output phase loss protection active
●
1: Only input phase loss protection active
●
2: Only output phase loss protection active
●
3: Both input and output phase loss protection inactive
An input phase loss can also be triggered by line voltage imbalance or deteriora-
tion of DC-bus capacitors. The input phase loss cannot be detected in the fol-
lowing conditions:
●
No run command
●
The real output current is lower than 30 % of converter rated current
●
During motor deceleration
The output phase loss has a dead zone in the following cases:
●
The output frequency is lower than 1.00 Hz
●
During DC-braking
●
During restarting with speed capture
●
During motor parameters auto-tuning
Analog Input Broken Wire Detection
Code
Name
Setting range
Default
Min.
Attri.
E1.61 Broken wire protection
0: Inactive
1: Warning
2: Error
0
–
Stop
If '4…20 mA' or '2…10 V' is selected for all analog inputs AI1, then this function
can detect the input missing possibly due to the cable disconnection. Once the
broken wire is detected, the frequency converter can either continue running
with warning (Warning code: Aib-) or stop with error indication (Error code:
AibE), which can be configured by parameter E1.61.
For 4…20 mA analog input, the detection level is 10 % of 4 mA.
For 2…10 V analog input, the detection level is 7.5 % of 2 V.
Bosch Rexroth AG
Functions and Parameters
VFC 3210
154/253
DOK-RCON04-VFC3210****-IT01-EN-P