MPH-02, MPB-02, MPD-02
Drive Control
6-87
DOK-INDRV*-MP*-02VRS**-FK01-EN-P
Due to hardware differences there are different requirements for mains
failure detection in supply units and converters:
•
The supply unit has an integrated mains contactor, the mains voltage
must have been provided at the mains input terminals of the supply
unit before power is switched on.
•
The converter doesn’t have an integrated mains contactor, the mains
voltage is only provided at the mains input terminals of the converter
by switching power on.
The mains voltage is therefore monitored when
•
the mains contactor has been switched on in the case of supply units,
•
the mains contactor has been switched on and drive enable has been
set in the case of converters.
Note:
For converters the mains failure monitor is only convenient
when the drive is active ("AF"). The disconnection of power
(mains contactor disconnection) would otherwise always
cause the error message
F2819 Mains failure
although the
mains voltage is available without error at the mains contactor.
For this reason error reset would be required even if the
device status is correct!
When the failure of mains voltage is detected, the following immediate
measures are taken:
•
The
warning
E2818 Phase failure
/
E2819 Mains failure
(for supply
units) or
E2819 Mains failure
(for converters) is displayed.
•
The message "failure DC bus supply" is signaled via the module bus.
In case the mains voltage fails permanently, the DC bus voltage is
continuously decreasing, the voltage value falls below the "minimum
voltage for power output" (see above).
The following reactions are then
triggered:
•
In the case of supply units, the integrated mains contactor is switched
off. The converter opens the "Rel1" contact via which the external
mains contactor has to be switched off.
•
The error message
F2819 Mains failure
appears on the display of the
supply unit or converter.
•
The message "readiness for operation of supply unit missing" is
signaled via the module bus.
If the voltage value, in the case of temporary mains voltage failure, does
not
fall below the "minimum voltage for power output" (see above), there
are the following reactions:
•
The
warning
E2818 Phase failure
or
E2819 Mains failure
(for supply
units) or
E2819 Mains failure
(for converters) automatically
disappears from the display.
•
The message "DC bus ready for power output" is generated via the
module bus again.
The behavior of the drives connected via the module bus in the case of
temporary mains failure depends on the reaction to undervoltage in the
DC bus that was set (configuration of power supply in parameter
P-0-0118).
There are the following possibilities:
•
error reaction triggered according to setting in
P-0-0119, Best
possible deceleration
•
No error reaction, i.e. the message is handled as "non-fatal warning".
Mains Failure Detection
Immediate Measure at Mains
Failure
Permanent Mains Failure
Temporary Mains Failure
Courtesy
of
CMA/Flodyne/Hydradyne
▪
Motion
Control
▪
Hydraulic
▪
Pneumatic
▪
Electrical
▪
Mechanical
▪
(800)
426-5480
▪
www.cmafh.com
