Santerno Sinus Penta - Page 462

SINUS PENTA
PROGRAMMING GUIDE
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A070 Fieldbus WatchDog
A070 Description
Watchdog Fieldbus tripped.
Event
The watchdog fieldbus tripped and communication is suspended.
Communication is
interrupted: the Master did not send any valid message for a time
longer than the time set in the parameter relating to the value set with parameter R016
of the fieldbus watchdog time (see the FIELDBUS CONFIGURATION MENU).
This alarm does not trip if, due to parameters in the CONTROL METHOD MENU
or
due to the status of the source selection or LOC/REM inputs (
DIGITAL INPUTS
MENU), th
e information sent from fieldbus is not currently used for the commands or
the references.
Possible
cause
• Voltage removed from Fieldbus.
• No communication from Master.
• Watchdog times too short.
Solution
1. Check fieldbus connections.
2. Check that the master ensures a constant sequence of legal messages (FIELDBUS
CONFIGURATION MENU) with max. time intervals lower than the preset watchdog
time.
3. Set longer watchdog times (see R016).
4. To reset alarm A070, force communication between the Master and the Penta drive
with bit 15 of the digital input word (bit 11 of the Control Word when using the
PROFIdrive) as required by parameter R018b and reset the drive control board. If
communication between the Master and the Slave (Penta) cannot be restored, alarm
A070 is restored after setting parameter R016 to zero and after resetting the Penta
drive. When the drive is next powered on, the alarm reset will affect the drive control
board.
A072-3, A089-90 Parameter Upload/Download Error from Keypad to Drive
A072
A073
A089
A090
Description
Upload/download failed, one of the controls of the parameter consistency detected a
fault.
Event
A communication error occurred while uploading/downloading the programming
parameters from the keypad to the drive.
Possible
cause
Temporary interruption to the serial link between keypad and control board.
Solution
Check the connection between the keypad and the control board, reset the alarm and
perform a new upload/download procedure.
A074 Overload
A074 Description Drive thermal protection tripped.
Event
The output current has been exceeding the drive rated current for long periods.
Possible
cause
• Current equal to Ipeak + 20% for 3 seconds, or
• Current equal to Imax for 120 seconds (S05÷S30 2T/4T),
• Current equal to Imax for 60 seconds (S41÷S90 2T/4T and all the 5T/6T models)
Solution
Check the drive current output during ordinary operation (M026 in the Measure Menu);
check the mechanical conditions of the connected load (load locked / overload).