Analog Output (Out-An ) - Direct Current Braking - Siei QUIX.-2M-0004 Manual De Instrucciones

Analog output (OUT-AN ) - Direct current braking

P - 4 8 P - 4 8 P - 4 8 P - 4 8 P - 4 8
V
ALUE
0
Voltage proportional to the output frequency; full scale value set by P-01.
1
10V-amplitude square wave with frequency equal to the output frequency.
2 10V-amplitude square wave with frequency twice the output frequency.
3 Voltage proportional to the output current; the full scale value is twice the rated I.
4 Voltage proportional to the output voltage; full scale value set by P-02.
Analog voltage proportional to the output torque (positive only); the full scale
5
value is twice the rated T.
Analog voltage proportional to the output torque (absolute value);the sign can
6
be obtained by one of the digital outputs.
Analog voltage proportional to the output power (positive only); the full scale
7
value is twice the motor rated power
Voltage proportional to the output power (absolute only);sign obtainable by
8
one of the digital outputs; the full scale value is twice the motor rated power.
Voltage proportional to the output cos
9
Voltage proportional to the output cos 10
obtained by the digital output.
/not used
11
Voltage proportional to the reference frequency
12
Voltage proportional to the current in the U phase
13
Voltage proportional to the current in the V phase
14
Voltage proportional to the current in the W phase
15
16 Voltage proportional to the active current I*cos
17 Voltage proportional to the magnetizing current I*sen
P
ARA
METER
Adds a variable offset to the signal chosen by P-48
P-49 P-49 P-49 P-49 P-49
P-50 P-50 P-50
P-50 P-50 Controls the gain of the analog output
Changes the time constant of the analog output filter
P-51 P-51 P-51 P-51 P-51
P
ARA
F
UNCTION
METER
P-28 P-28 P-28 P-28 P-28 D.C. braking level (%
of P-09)
P-29 P-29
P-29 P-29 P-29 Limit frequency below
which the braking is
forced (Hz)
P-30 P-30 P-30 Set the braking dura-
P-30 P-30
tion at start-up (s)
P-31 P-31 P-31 P-31 P-31 Set the braking dura-
(s)
tion in stop phase
I, f
P-30
P-28
RUN
Out -RUN
f
ref
RUN
In-DCB
Out-RUN
T
YPE AND MEANING OF THE ANALOG OUTPUT
ϕ
(only positive); the full scale value is 1
ϕ
(absolute value); the sign can be
F
UNCTION
V
ALUE
D
ESCRIPTION
[ D ]
EFAULT
Defines the D.C. value expressed in % of P-02 from
0 - 100
which the value of the braking current depends.
[ 0 ]
Defines the frequency below which the decel. ramp is
0,0 / 480,0
locked and the braking current is forced. Before forcing
[ 0,0 ]
the current, Vout is set to zero for a time defined by
parameter P-81 (demag. time).
Defines the braking duration at start-up; if P-30 = 0 →
0,0 / 60,0
[ 0,0 ]
no braking is made at startup.
0,0 / 60,0
Determines the braking duration in stop phase; if P-31
= 0 → no braking is made in stop phase.
[ 0,0 ]
P-81
P-29
P-81
—————— QUIXDrive Inverter ——————
ϕ
ϕ
V
ALUE
[ D ]
EFAULT
- 9,99 / +9,99
[ 0,00 ] ( V )
- 9,99 / +9,99
[ 1,00 ]
0,00 / 2,50
[ 0,00 ] ( s )
P-31
P-28
P-28
INVERTER PARAMETERS
N
OTES
The output voltage at terminal N.° 12 of the
control terminal board can vary between 0
and 10V. The meaning assumed by this
voltage depends on the value assigned to
parameter P-48. The value of the voltage
can be changed by properly programming
the parameters P-49, P-50, P-51.
Vout
10V
1
4
3V
2
3
5
-5V
-10V
1: offset (P-49) = 3; gain (P-50) = 1
2: offset (P-49) = 0; gain (P-50) = 1
3: offset (P-49) = -5; gain (P-50) = 1
4: offset (P-49) = 10; gain (P-50) = -1
5: offset (P-49) = 10; gain (P-50) = - 2
Sint
Vout= 10 [ ( ------ (P-50)+(P-49) ]
Sfsc
The aim of D.C. braking is to keep the
motor locked in a fixed position, it is
not an alternative to the ramp
deceleration. The D.C. braking
consist in forcing a direct current that
depends from the voltage set by P-
28 and the electrical characteristics
of the motor into a motor phase.
With D.C. braking, the deceleration
time is shorter than in case of coast
to stop. Sometimes, at start-up, it
may be useful to lock the motor for a
preset time before starting the acce-
leration ramp.
The function can also be enabled or
disabled through terminal board by
t
configuring one
t
programmable inputs (Ix-ENB) as a
t
control.
It is always possible to force a direct
current on the motor, independently
of the values assumed by the
parameters, by configuring one of
the terminal board programable
inputs (Ix-DCB) as control of D.C.
t
braking.
t
During the D.C. braking, at parameter
d-00 the display shows the message
t
" dcb " instead of the frequency.
t
Vint
of the
29-GB