6-88
Drive Control
MPH-02, MPB-02, MPD-02
DOK-INDRV*-MP*-02VRS**-FK01-EN-P
For each of the drives connected by the module bus it is possible to make
basic settings for power supply in parameter
P-0-0118, Power supply,
configuration
:
•
reaction to drive errors signaled via module bus
•
individual drive errors signaled via the module bus
•
drive-side handling of undervoltage (voltage value of DC bus falling
below a minimum) defined as error or warning
•
fatal drive errors (F8xxx) signaled to supply unit because of power off
and possibly DC bus short circuit for shutting down synchronous
motors
Information on Inverters
The motors are controlled via inverters. Inverters can be designed as
modular devices or together with a supply unit be integrated in converters.
For motor control the inverter converts the DC bus voltage into alternating
voltage (AC).
By means of the DC bus voltage level the inverter evaluates whether the
connected motor can be supplied with sufficient power or not. The inverter
can do this with the following procedures:
•
evaluation of the message "failure DC bus supply" signaled by the
supply unit via the module bus
- or -
•
monitoring of the internally measured DC bus voltage with regard to an
individual minimum threshold value
The desired procedure is determined in parameter
P-0-0114,
Undervoltage threshold
:
•
P-0-0114 = 0
→
drive detects undervoltage when the supply unit
signals "DC bus not ok" via the module bus
•
P-0-0114
≠
0
→
determination and activation of undervoltage
threshold active in the drive greater 75% of nominal mains voltage
crest value
Depending on the configuration of the power supply (P-0-0118),
undervoltage is handle as an error (error reaction according to P-0-0119)
or non-fatal warning (no reaction).
Information on Converters
In a converter the supply unit and inverter are combined in one device. As
each inverter can provide or receive information via parameters, the
information concerning the supply section of the converter can be queried
or transmitted via parameters.
It is possible to operate converters of the HCS02.1 type as inverters only.
When doing this power supply is carried out by a DC bus (power voltage);
there is no mains voltage applied to the converter. The inverter operation
of a converter is configured via the respective bit in
P-0-0860, Control
word of power section
.
Note:
Converters of the HCS03.1 type cannot be operated as
inverters on a DC bus!
When a converter is directly connected to the supply mains (converter
operation), the following mains voltage data are made available:
•
P-0-0806, Current mains voltage crest value
•
P-0-0810, Minimum mains crest value
•
P-0-0815, Nominal mains voltage crest value
Configuration of Power Supply
DC Bus Voltage Monitor
Operating Converters as
Inverters
Mains Voltage Data
Courtesy
of
CMA/Flodyne/Hydradyne
▪
Motion
Control
▪
Hydraulic
▪
Pneumatic
▪
Electrical
▪
Mechanical
▪
(800)
426-5480
▪
www.cmafh.com
