6-18
Drive Control
MPH-02, MPB-02, MPD-02
DOK-INDRV*-MP*-02VRS**-FK01-EN-P
Note:
The voltage loop is only active when bit 0 has been set (field
weakening operation active) in the current loop control word
(P-0-0045)
The command value of the voltage loop is defined by means of parameter
P-0-0536, Maximum motor voltage
.
The input in P-0-0536 is made in percent and refers to the maximum
possible output voltage of the inverter that is determined by the active DC
bus voltage (cf. S-0-0380).
Note:
A
setting of 90%
in parameter P-0-0536 is advisable.
In addition to the parameterization of the field loop, the following settings
can be made or changed, if required:
•
The field weakening can be activated via
P-0-0045, Control word of
current controller
(bit 0).
•
According to the motor cooling type, a different factor can be set in
parameter
P-0-0530, Slip increase
.
Diagnostic and Status Messages
•
S-0-0158, Power threshold Px
This parameter determines the power threshold above which the drive
outputs the status message "power > = Px" in parameter S-0-0337,
Message ’P >= Px’.
•
S-0-0337, Message ’P >= Px’
Only bit 0 of this parameter is used. It is set when:
S-0-0382, DC bus power >= S-0-0158, Power threshold Px
Simultaneously, bit 7 is set in
S-0-0013, class 3 diagnostics
.
•
The DC bus voltage is measured in the current loop clock
(advanced: T = 62.5 µs; basic: T = 125 µs) and displayed in parameter
S-0-0380, DC bus voltage
.
•
The effective electric power produced by the controller (taking the
inverter losses into account) is displayed in parameter
S-0-0382, DC
bus power
.
Calculation according to formula below:
5
.
1
)
(
∗
∗
+
∗
=
q
q
d
d
eff
I
U
I
U
P
The calculated value is displayed in filtered form (T = 8ms). When the
parameterized threshold value in
S-0-0158, Power threshold Px
is
exceeded, bit 0 is set in
S-0-0337, Message ’P >= Px’
and bit 7 in
class 3 diagnostics.
•
The measured value of the torque-generating current (I
q
) detected in
the current loop clock (advanced: T = 62.5 µs; basic: T = 125 µs) is
displayed in parameter
P-0-0043, Torque-generating current, actual
value
.
•
The measured value of the field-generating current (I
d
) detected in the
current loop clock (advanced: T = 62.5 µs; basic: T = 125 µs) is
displayed in parameter
P-0-0044, Flux-generating current, actual
value
.
•
Parameter
P-0-0046, Status word of current controller
displays the
status of the current loop.
Status Messages
Display Values and Diagnostic
Values
Courtesy
of
CMA/Flodyne/Hydradyne
▪
Motion
Control
▪
Hydraulic
▪
Pneumatic
▪
Electrical
▪
Mechanical
▪
(800)
426-5480
▪
www.cmafh.com
