6-86
Drive Control
MPH-02, MPB-02, MPD-02
DOK-INDRV*-MP*-02VRS**-FK01-EN-P
In the case of power output of the DC bus and correct mains voltage, the
minimum value of the DC bus voltage for signaling the readiness for
power output ...
•
in the case of supply units, 75% of the crest value of the mains voltage
detected when switching on (cannot be set),
•
in the case of converters, 75% of the crest value of the mains voltage
detected when switching on, unless a higher minimum value has bee
set via
P-0-0114, Undervoltage threshold
.
In case the voltage value has fallen below the minimum voltage, the error
message
F2026 Undervoltage in power section
is generated and
power is switched off.
Note:
The crest value of the mains voltage is detected when the
mains contactor is activated. It is displayed in parameter
P-0-0815, Nominal mains voltage crest value
(only for
converters, not for supply units).
In the case of error power is switched off automatically,
•
in the case of supply units, by switching the integrated mains contactor
off,
•
in the case of converters, by opening the "Rel1" contact that has to be
available in the switch-off path of the mains contactor.
Note:
Therefor the status information "supply ready for operation"
(respective bit in
P-0-0861, Status word of power section
)
has to be assigned to the "Rel1" contact of the control section
for converters; no other signal may be assigned to this
contact.
Otherwise power is not switched off
automatically!
Depending on the hardware-side design and control of the supply unit or
converter, "DC bus short circuit" (for decelerating synchronous motors)
can be activated, too.
Note:
Recommendations on the hardware-side control of supply
units or converters are contained in the documentation of the
respective device.
Criteria for power off (for supply units) or opening the "Rel1" contact (for
converters):
•
error in supply (see "Supply Error Messages" in section "Diagnostic
and Status Messages")
•
fatal error in inverter or converter (F8xxx), is signaled at supply unit by
corresponding configuration of the inverter or converter as regards
power supply (P-0-0118)
•
charged DC bus has fallen below "minimum voltage for power output"
(see above)
Note:
When an inverter signals missing readiness for operation to
the module bus, power is not switched off when DC bus is
ready for power output (exception see above "fatal
error... (F8xxx), ...")!
Minimum Voltage for Power
Output
Power Off
Courtesy
of
CMA/Flodyne/Hydradyne
▪
Motion
Control
▪
Hydraulic
▪
Pneumatic
▪
Electrical
▪
Mechanical
▪
(800)
426-5480
▪
www.cmafh.com
