Pump and fan control with autochange can be
selected by setting the value of parameter 0.1
to 0.
The application can be used to control one
variable speed drive and 0-4 auxiliary drives.
Additionally the motor connected to the
frequency converter and the start order of the
auxiliary drives can be changed with the
autochange function and external relay
system. The PI-controller of the frequency
2 Control I/O
TerminalSignalDescription
PI-controller
actual value
READY
220
VAC
220
VAC
FAULT
1+10V
2Uin+Analog input, voltageProgrammable
3GNDI/O groundGround for reference and controls
+Analogue input,PI-controller actual value
4I
in
5Iin-current (programmable)range 4—20 mA
6+24VControl voltage outputVoltage for switches, etc. max. 0.1 A
7GNDControl voltage groundGround for reference and controls
8DIA1Start/StopContact open = stop
9DIA2Interlock input, autoch. 1Contact open = no interlock
10DIA3Interlock input, autoch. 2Contact open = no interlock
11CMACommon for DIA1—DIA3 Connect to GND or + 24V
12+24VControl voltage outputVoltage for switches, (same as #6)
13GNDI/O groundGround for reference and controls
14DIB4Start/StopContact open = stop
15DIB5Jogging speed selectContact open = no action
16DIB6Source A/B selectionContact open = source A is active
17CMBCommon for DIB4—DIB6Connect to GND or + 24V
18I
out
19I
out
20DO1 Digital outputProgrammable ( par. 3. 6)
21RO1Relay output 1Contact closed = control active
22RO1Autochange 1Programmable ( par. 3. 7)
23RO1control
24RO2Relay output 2Contact closed = control active
25RO2Autochange 2Programmable ( par. 3. 8 )
26RO2control
Reference outputVoltage for a potentiometer, etc.
ref
range 0—10 V DC(factory setting: not in use)
Source A (PI-controller)Contact closed = start
(programmable)Contact closed = interlock active
(programmable)Contact closed = interlock active
Source B (Direct freq. ref.) Contact closed = start
(programmable)Contact closed = jogging speed
+Analogue outputProgrammable (par. 3. 1)
-Output frequencyRange 0—20 mA/RL max. 500 Ω
FAULTOpen collector, I<50 mA, U<48 VDC
converter controls the speed of the variable
speed drive and gives control signals to Start
and Stop auxiliary drives to control the total
flow.
The application has two control sources on
I/O terminals. Source A is Pump and fan
control and source B is direct frequency
reference. The control source is selected with
DIB6 input.
Note! Remember to connect CMA and CMB inputs
Contact closed = source B is active
Figure 2-1Default I/O configuration and connection example of the Pump and fan
2 = Read up parameters to user's set
3 = Load down user's set parameters
4 = Read parameters up to the panel
(possible only with graphical panel)
5 = Load down parameters from panel
(possible only with graphical panel)
0.3 Language selection0—1100 = English
1 = Finnish
2= Spanish
0.1 Application selection
With this parameter the active application can be selected. If the device has been ordered
from the factory equipped with pump and fan control with autochange application this has
been loaded to the unit as application 0. The application has also been set active in the factory. Check anyway that the value of the parameter 0.1 is zero when you want to use the
pump and fan control with autochange application.
If the application is loaded to the device later it has to be set active always after loading
by setting the value of parameter 0.1 to zero.
0.2 Parameter loading
See User's manual chapter 11.
0.3 Language
With this parameter the language of the graphical panel can be selected.
1. 10Nominal voltage180—6901 V230 VVacon range CX/CXL28
of the motor400 VVacon range CX/CXL/CXS4
500 VVacon range CX/CXL/CXS5
690 VVacon range CX6
1. 11Nominal frequency30—500 Hz1 Hz50 Hzf
from the rating plate of8
n
of the motorthe motor
1. 12Nominal speed1—20000 rpm 1 rpm 1440 rpmn
from the rating plate of8
n
of the motor**)the motor
1. 13Nominal current2.5 x I
of the motor( I
n Mot)
n CX
0.1 AI
nCX
In from the rating plate of8
the motor
1. 14Supply voltage180—250230 VVacon range CX/CXL28
380—440400 VVacon range CX/CXL/CXS4
380—500500 VVacon range CX/CXL/CXS5
525—690690 VVacon range CX6
1. 15Parameter conceal0—110Visibility of the parameters:8
0 = All parameter groups visible
1 = Only group 1 is visible
1. 16Parameter value lock0—110Disables parameter changes:8
0 = Changes enabled
1 = Changes disabled
Note!=Parameter value can be changed
only when the frequency converter
is stopped.
*) If 1. 2 > motor synchr. speed, check suitability
for motor and drive system
Selecting 120 Hz/500 Hz range see page 6-5.
**) Default value for a four pole motor and a
nominal size frequency converter.
Table 5-1 Group 1 basic parameters.
Vacon PlcPhone: +358-201 2121Fax:+358-201 212 205
Service: +358-40-8371 150E-mail: vacon@vacon.com
Vacon Page 7
Pump control with autochange
5.2 Description of Group 1 parameters
1. 1, 1. 2 Minimum / maximum frequency
Defines frequency limits of the frequency converter.
The default maximum value for parameters 1. 1 and 1. 2 is 120 Hz. By setting 1. 2 =
120 Hz when the device is stopped (RUN indicator not lit) parameters 1. 1 and 1. 2
are changed to 500 Hz. At the same time the panel reference resolution is changed
from 0.01 Hz to 0.1 Hz.
Changing the max. value from 500 Hz to 120 Hz is done by setting parameter 1. 2 =
119 Hz when the device is stopped.
NOTICE! Start frequency of the auxiliary drive is not conditional on maximum
frequency because in the application start frequency and stop frequency of the
auxiliary drives are scaled by the endower of the system.
1. 3, 1. 4 Acceleration time 1, deceleration time 1:
These limits correspond to the time required for the output frequency to accelerate
from the set minimum frequency (par. 1. 1) to the set maximum frequency
(par. 1. 2).
1. 5PI-controller gain
This parameter defines the gain of the PI-controller.
If this parameter is set to 100%, a 10% change in error value causes the controller
output to change by 10.0 Hz.
If the parameter value is set to 0 the PI-controller operates as I-controller.
1. 6PI-controller I-time
Defines the integration time of the PI-controller.
1. 7Current limit
This parameter determines the maximum motor current from the frequency converter.
To avoid motor overloading set this parameter according to the rated current of the
motor.
1. 8U/f ratio selection
Linear:The voltage of the motor changes linearly with the frequency in
the constant flux area from 0 Hz to the field weakening point
0(par. 6. 3) where the nominal voltage is supplied to the motor. See
figure 6.4-1.
Linear U/f ratio should be used in constant torque applications.
This default setting should be used if there is no special demand for another
setting.
Squared:The voltage of the motor changes following a squared curve form
with the frequency in the area from 0 Hz to the field weakening
1point (par. 6. 3) where the nominal voltage is supplied to the motor.
See figure 6.4-1.
The motor runs undermagnetised below the field weakening point
and produces less torque and electromechanical noise. Squared U/f
ratio can be used in applications where torque demand of the load is
proportional to the square of the speed, e.g. in centrifugal fans and
Programm. The U/f curve can be programmed with three different points.
U/f curveThe parameters for programming are explained in the chapter 5.2.
2The programmable U/f curve can be used if the other settings do not
satisfy the needs of the application. See figure 4-2.
U[V]
Un
Par 6. 4
Par. 6. 6
(Olet. 10%)
Par. 6. 7
(Olet. 1.3%)
Default: nominal
voltage of the
motor
Par. 6. 5
(Olet. 5 Hz)
Field weakening
point
Default: nominal frequency
of the motor
Par. 6. 3
f[Hz]
UD009K08
Figure 6.4-2 Programmable U/f curve.
1. 9U/f optimization
AutomaticThe voltage to the motor changes automatically which makes the
torquemotor to produce torque enough to start and run at low frequencies.
boostThe voltage increase depends on the motor type and power.
Automatic torque boost can be used in applications where starting
torque is high due to starting friction, e.g. in conveyors.
NOTE!In high torque - low speed applications - it is likely the motor will
overheat. If the motor has to run a prolonged time under these
!
conditions, special attention must be paid to cooling the motor. Use
external cooling for the motor if the temperature tends to rise too high.
Vacon PlcPhone: +358-201 2121Fax:+358-201 212 205
Service: +358-40-8371 150E-mail: vacon@vacon.com
Vacon Page 9
Pump control with autochange
1. 10Nominal voltage of the motor
Find this value U
on the rating plate of the motor.
n
This parameter sets the Voltage at the field weakening point, parameter 6. 4, to
100% x U
n
motor
.
1. 11Nominal frequency of the motor
Find this value f
on the rating plate of the motor.
n
This parameter sets the field weakening point, parameter 6. 3, to the
same value.
1. 12Nominal speed of the motor
Find this value n
on the rating plate of the motor.
n
1. 13Nominal current of the motor
Find this value I
on the rating plate of the motor.
n
1. 14Supply voltage
Set parameter value according to the nominal voltage of the supply.
Values are pre-defined for CX/CXL2, CX/CXL/CXS4, CX/CXL/CXS5 and CX6
ranges, see table 6.4-1.
1. 15Parameter conceal
Defines which parameter groups are available:
0 = All parameter groups are visible
1 = Only group 1 is visible
1. 16Parameter value lock
Defines access to the changes of the parameter values:
0 = Parameter value changes enabled
1 = Parameter value changes disabled
2. 34 Option board Ain2 signal0 —10s0.01s0.1s0 = No filtering25
filter time
Pump and fan control with autochange
signal (control board) 24
in
2 = Set reference from the panel
(reference r1)
3 =
Signal from internal motor pot.
4 =
Signal from internal motor pot.
reset if Vacon unit is stopped
par.2. 281 Hz0 HzSelects the frequency that 24
max
corresponds to the max.
reference signal
0 = Scaling off
>0 = Scaled maximum value
signal (control board) 25
in
2 = Set reference from the panel
(reference r2)
3 =
Signal from internal motor pot.
4 =
Signal from internal motor pot.
reset if Vacon unit is stopped
5 = Option board Ain1-signal
6 = Option board Ain2-signal
7 = Set reference from the panel
(reference r3)
2 = 0—10 V
Note! = Parameter value can be changed only when the frequency converter is stopped (Continues)
3. 1Analogue output function0—15110 = Not used
1 = O/P frequency
Scale 100%26
(0—f
)
max
2 = Motor speed(0—max. speed)
3 = O/P current(0—2.0 x I
4 = Motor torque(0—2 x T
5 = Motor power(0—2 x P
6 = Motor voltage (0—100% xU
nCX
nCX
nCX
)
)
)
)
nM
7 = DC-link volt.(0—1000 V)
8—10 = Not in use
11 = PI-controller reference value
12 = PI-controller actual value 1
13 = PI-controller actual value 2
14 = PI-controller error value
15 = PI-controller output
3. 2
Analogue output filter time
3. 3
Analogue output inversion
0.01—10 s0.011.00 26
0—1100 = Not inverted26
1 = Inverted
3. 4
Analogue output minimum
0—1100 = 0 mA 26
1 = 4 mA
3. 5Analogue output scale10—1000%1%100% 26
3. 6Digital output function0—30130 = Not used 27
1 = Ready
2 = Run
3 = Fault
4 = Fault inverted
5 = Vacon overheat warning
6 = External fault or warning
7 = Reference fault or warning
8 = Warning
9 = Reversed
10 = Jogging speed selected
11 = At speed
12 = Motor regulator activated
13 = Output freq. limit superv. 1
14 = Output freq. limit superv. 2
15 = Torque limit supervision
16 = Reference limit supervision
17 = External brake control
18 = Control from I/O terminals
19 = Frequency converter
temperature limit supervision
20 =
Unrequested rotation direction
21 = External brake control inverted
22 = Analogue input supervision
22—26 = Not in use
27 =Autochange 3 control
28 = Auxiliary drive 1 start
29 = Auxiliary drive 2 start
30 = Auxiliary drive 3 start
3. 7Relay output 1 function
0—311260-25 = As parameter 3. 627
26 = Autochange 1 control
27 = Autochange 4 control
28-30 = As parameter 3. 6
31 = Aux. drive 4 start
3. 8Relay output 2 function0—301260-25 = As parameter 3. 628
26 = Autochange 2 control
27 = Autochange 5 control
28-30 = As parameter 3. 6
Note! = Parameter value can be changed only when the frequency converter is stopped. (Continues)
go before starting the sleep delay
counting ( 0.0 = not in use)
par. 9.16 before stopping Vacon
restarting Vacon
Level % from actual max. value
1 = Wake up exceeding the level
Level % from actual max. value
2 = Wake up falling below the level
Level % from current reference
3 = Wake up exceeding the level
Level % from current reference
Note! =Parameter value can be changed only when the frequency converter is stopped.(Continues)
1: External fault, closing contact = Fault is shown and motor is stopped when
the input is active
2: External fault, opening contact = Fault is shown and motor is stopped when
the input is not active
3: Run enablecontact open= Start of the motor disabled
contact closed= Start of the motor enabled
4: Acc. / Deccontact open= Acceleration/Deceleration time 1 selected
time select.contact closed= Acceleration/Deceleration time 2 selected
5: Reversecontact open= Forward
If two or more inputs are progr.
contact closed= Reverseto reverse then if one of them is
active the direction is reverse
6: Jogging freq.contact closed= Jogging frequency selected for freq. refer.
7: Fault resetcontact closed= Resets all faults
8: Acc./Dec.contact closed= Stops acceleration and deceleration until
operation the contact is opened
prohibited
9: DC-brakingcontact closed= In the stop mode, the DC-braking operates
command until the contact is opened, see figure 6-1.
Dc-brake current is set with parameter 4. 8.
10: Motor pot. contact closed = Reference increases until the contact is
UP opened
11: Interlock inp., contact closed = Interlock of autochange drive 1 is active
autochange 1
Output
frequency
DIA3
RUN
STOP
DIA3 as DC-brake command input and stop-mode = Ramp