Control / Brake Sequence. Omron L7
विज्ञापन
विज्ञापन
Control / Brake Sequence
Up and Down Commands
Travel start in Up or Down direction
UP and Down commands are the travel direction information.
To start in the elevator in Up or Down direction the following conditions have to be fulfilled:
•
At least one speed reference must be selected if digital inputs are used for speed reference selection.
•
•
•
The hardware base block signal must be set (not base block condition).
When a digital input is set as contactor confirmation input, the contactor confirmation signal must be present before the travel starts.
To start in the Up direction the Up signal must be set. To start in the Down direction the Down signal must be set.
Travel stop
The inverter can be stopped as follows:
•
The direction command (UP or Down) signal is removed.
•
•
The speed reference selection signal is removed if digital inputs are used for speed reference selection.
If d1-18 is set to 3 and all speed inputs are removed
Up / Down Command Source Selection
The input source for the Up and Down signal can be selected in parameter b1-02.
Related Parameters
Parameter
No.
b1-02
Name
RUN command source selection
Factory
Setting
Change during
Operation
1 No
V/f
Q
Control Methods
Open
Loop
Vector
Closed
Loop
Vector
Q Q
Closed
Loop
Vector
(PM)
Q
Up/Down Commands Using the Digital Operator (b1-02=0)
When b1-02 is set to 0 the Up/Down command must be input using the Digital Operator keys (RUN, STOP, and FWD/REV). For details on the Digital Operator refer to
page 3-1, LED Monitor / Digital Operator and
. This operation can be used for test purposes only.
Up/Down Commands Using Control Circuit Terminals (b1-02=1, factory setting)
When b1-02 is set to 1 the Up/Down command is input at the control circuit terminals S1 and S2. This is the factory setting and the most common configuration.
Up/Down Commands Using an Input Option Card (b1-02=3)
When b1-02 is set to 2 the Up/Down command can be set using an input option card, for example a field bus communications card.
6
6-
3
6
Speed Reference Source Selection
Speed Reference Source Selection
The speed reference source can be selected using parameter b1-01.
Related Parameters
Parameter
No.
b1-01
Name
Frequency reference source selection
Factory
Setting
0
Change during
Operation
No
V/f
Q
Control Methods
Open
Loop
Vector
Closed
Loop
Vector
Q Q
Closed
Loop
Vector
(PM)
Q
Input the Speed Reference from the Digital Inputs (b1-01=0)
When b1-01 is set to 0 the speed reference can be selected from preset speeds using the digital inputs of the
page 6-5, Speed Selection Sequence Using Digital Inputs
Input the Speed Reference Using a Voltage Signal (b1-01=1)
When b1-01 is set to 1 the speed reference can be input at terminal A1 as a 0 to +10V signal. If an analog option card AI-14B is installed, the A1 signal is replaced by the Channel 1 input of the AI card.
The analog reference signal can also be used as 1st speed if multispeed operation is selected (d1-18=0, refer to
page 6-5, Speed Selection Sequence Using Digital Inputs
If parameter d1-18 is set to 0 and b1-01 is set to 1, the analog input value replaces any speed selected by the digital inputs except the service speed.
Input the Speed Reference Using an Input Option Card (b1-01=3)
When b1-01 is set to 2 the speed reference can be input using an input option card, for example a field bus communications card.
6-
4
Speed Selection Sequence Using Digital Inputs
If the digital inputs are used for speed selection, the speed selection method and the speed priority depends on the setting of parameter d1-18.
Control Methods
Parameter
No.
d1-18
Name
Speed Priority Selection
Factory
Setting
1
Change during
Operation
No
V/f
Q
Open
Loop
Vector
Q
Closed
Loop
Vector
Q
Closed
Loop
Vector
(PM)
Q
Multi-Step Speed Operation 1/2 (Binary Input) (d1-18=0/3)
If d1-18 = 0
8 preset speed steps (defined in the parameters d1-01 to d1-08) can be selected using 3 binary coded digital inputs. The Up/Down command starts the inverter. It stops when the Up/Down command is removed.
If d1-18 = 3
7 preset speed steps (defined in the parameters d1-02 to d1-08) can be selected using 3 binary coded digital inputs. The Up/Down command starts the inverter. It is stopped when the Up/Down command is removed or when no speed is selected (all D/Is off).
Related Parameters
Parameter
No.
d1-01 to d1-08
Name
Multi-Step speed 1 to 8 reference value
Factory
Setting
Change during
Operation
0.00 Hz
0.00%
Yes
V/f
A
-
Control Methods
Open
Loop
Vector
Closed
Loop
Vector
A
-
A
-
Closed
Loop
Vector
(PM)
-
A
Multi-function Digital Input Settings (H1-01 to H1-05) (Example)
Terminal
S4
S5
S6
Parameter
Number
H1-02
H1-03
H1-04
Set Value
3
4
5
Multi-step speed command 1
Multi-step speed command 2
Multi-step speed command 3
Details
6
6-
5
6
1
6
7
8
4
5
2
3
Speed Selection Table
The following table shows the combinations of the digital input and the according speed.
If b1-02 is set to “1”, speed 1 is input as analog reference at terminal A1 or Channel CH1 of an analog input option card AI-14B if it is installed.
If an AI-14B option card is used and the functions for channel CH2 and CH3 are set to “Auxiliary Frequency
2” (H3-05/09=2) and “Auxiliary Frequency 3” (H3-05/09=3).
Speed
Multi-step Speed
Command 1
OFF
ON
OFF
ON
OFF
ON
OFF
ON
Multi-step Speed
Command 2
Multi-step Speed
Command 3
OFF
OFF
ON
ON
OFF
OFF
ON
ON
OFF
OFF
OFF
OFF
ON
ON
ON
ON
Selected Frequency d1-18 = 0
Frequency reference 1 d1-01 or A1/AI-14B CH1 d1-18 = 3
Stop
Frequency reference 2, d1-02 or AI-14B CH2
Frequency reference 3, d1-03 or AI-14B CH3
Frequency reference 4, d1-04
Frequency reference 5, d1-05
Frequency reference 6, d1-06
Frequency reference 7, d1-07
Frequency reference 8, d1-08
Nominal / Leveling Speed Detection with Multi Speed Inputs
Using this function the inverter can distinguish between the nominal and leveling speed when the speed selection is done by multifunction inputs which is required by other functions like the ASR controller, short floor operation and slip compensation for V/f control.
Related Parameters
Parameter
No.
Name
Factory
Setting
Change during
Operation
V/f
S3-04 Nominal/Leveling speed detection level 0.00 Hz No
If the
•
reference speed >= S3-04 the selected speed is regarded as nominal speed
•
reference speed < S3-04 the selected speed is regarded as leveling speed
A
Control Methods
Open
Loop
Vector
Closed
Loop
Vector
A A
Closed
Loop
Vector
(PM)
A
6-
6
Separate Speed Selection Inputs, High Speed Has Priority (d1-18=1)
If d1-18 is set to 1, 6 different speeds can be set and selected using four digital inputs.
Related Parameters
Parameter
No.
Name
Factory
Setting
Change during
Operation d1-09 d1-10 d1-11 d1-12 d1-13 d1-17
Nominal Speed
Intermediate Speed 1
Intermediate Speed 2
Intermediate Speed 3
Releveling Speed
Leveling Speed
50.00 Hz
100.00%
0.00 Hz
0.00%
0.00 Hz
0.00%
0.00 Hz
0.00%
0.00 Hz
0.00%
4.00 Hz
8.00%
S3-09
Frequency reference loss detection when d1-18 = 1 and
H1-K83.
0:Disabled
1:Enabled
1
*1. This speed can be selected by a combination of two inputs
Yes
Yes
Yes
Yes
Yes
Yes
No
V/f
A
-
A
-
A
-
Q
-
Q
-
A
-
A
-
A
-
A
-
A
-
A
-
Q
-
Control Methods
Open
Loop
Vector
Closed
Loop
Vector
Q Q
-
A
-
A
-
A
-
A
-
Q
-
Closed
Loop Vector (PM)
-
Q
-
A
-
A
-
A
-
A
-
Q
Digital Input
Setting (H1-01 to H1-05)
80
81
-
*1
-
82
83
A
Digital Input Factory Settings
Terminal
S3
Parameter
Number
H1-01
Set Value
80
S4
S5
S6
H1-02
H1-03
H1-04
84
81
83
Details
Nominal speed selection (d1-09)
Inspection speed selection (d1-14)
Intermediate speed selection (d1-10)
Leveling speed selection (d1-17)
A A -
Higher Speed has Priority and a Leveling Speed Input is Selected (H1-=83)
If d1-18 is set to 1 and one multi-function digital input is set to leveling speed selection (H1-=83), the inverter decelerates to the leveling speed (d1-17) when the selected speed signal is removed. Inspection Speed can not be selected as travel speed. The higher speed has priority over the leveling speed, i.e. as long as a higher speed is selected, the leveling signal is disregarded (see the fig. below)
The inverter stops when the leveling signal or the Up/Down signal is removed.
DC Injection/ zero servo
DC Injection/ zero servo
Speed
Hardware BB
Up/Donw
Leveling speed
Selected speed
No effect
Input is set
6
6-
7
6
The following speed selection table shows the different speeds and the according digital inputs.
Terminal function
Nominal Speed command (H1-=80)
Nominal
Speed d1-09
1
Intermed.
Speed 1 d1-10
0
Intermed.
Speed 2 d1-11
1
Intermed.
Speed 3 d1-12
0
Relevel.
Speed d1-13
0
Leveling
Speed d1-17
0
Intermediate speed command (H1-=81)
Releveling speed command (H1-=82)
Leveling speed command (H1-=83)
0
0
X
1
0
X
1
1
X
1
1
X
0
1
X
0
0
1
* 0 = disabled, 1 = enabled, X = no meaning
0Hz
0
0
0
0
Higher Speed Priority is Selected and a Leveling Speed Input is Not Selected (H1-K83)
When the leveling speed command is not selected for any digital input, the inverter decelerates to the leveling speed (d1-17) when the selected speed signal is removed. Inspection Speed can not be selected as travel speed
To select the leveling speed as travel speed the frequency reference loss detection must be disabled (S3-09=0).
The inverter stops when the direction signal Up/Down is removed.
When no speed selection input is set the leveling speed is taken as the speed reference.
DC Injection/ zero servo
DC Injection/ zero servo
Speed
Hardware BB
Up/Down
Selected speed
The following speed selection table shows the different speeds and the according digital inputs.
Terminal function
Nominal Speed command (H1-=80)
Nominal
Speed d1-09
1
Intermed.
Speed 1 d1-10
0
Intermed.
Speed 2 d1-11
1
Intermed.
Speed 3 d1-12
0
Relevel.
Speed d1-13
0
Leveling
Speed d1-17
0
Intermediate speed command (H1-=81)
Releveling speed command (H1-=82)
Leveling speed command (H1-=83)
0
0
N/A
1
0
N/A
1
1
N/A
1
1
N/A
0
1
N/A
0
0
N/A
* 0 = disabled, 1 = enabled, N/A = not available
The inverter stops when the direction signal (UP or DOWN signal) is removed.
IMPORTANT
With this configuration the drive stops with a “FRL” (frequency reference loss fault) when no speed reference input is selected during the start.
To disable the FRL detection, set parameter S3-09 to “0”.
Separate Speed Selection Inputs, Leveling Speed Has Priority (d1-18=2)
The related parameters and the digital input pre-settings are the same as for the High Speed Priority setting
(d1-18=1).
Leveling Speed has Priority and a Leveling Speed Input is Selected (H1-=83)
If d1-18 is set to “2” and one multi-function digital input is set to leveling speed (H1-=83) the inverter decelerates to the leveling speed (d1-17) when the leveling speed selection input is activated. The leveling signal has priority over the selected speed, i.e. the selected speed is disregarded. The selected travel speed must be different from inspection speed.
6-
8
The inverter stops when the leveling speed command is removed.
DC Injection/ zero servo
DC Injection/ zero servo
Speed
Hardware BB
Up/Down
Leveling speed
Selected speed
Leveling speed has priority
The following speed selection table shows the different speeds and the according digital inputs.
Terminal function
Nominal Speed command (H1-=80)
Nominal
Speed d1-09
1
Intermed.
Speed 1 d1-10
Intermed.
Speed 2 d1-11
Intermed.
Speed 3 d1-12
0 1 0
Relevel.
Speed d1-13
0
Leveling
Speed d1-17
0
Intermediate speed command (H1-=81)
Releveling speed command (H1-=82)
Leveling speed command (H1-=83)
0
0
X
1
0
X
1
1
X
1
1
X
0
1
X
0
0
1
* 0 = disabled, 1 = enabled, X = no meaning
0Hz
0
0
0
0
Leveling Speed Priority is Selected and a Nominal Speed Input is Not Selected (H1-K80))
If d1-18 is set to “2” and no digital input is set to nominal speed selection, the speed reference with speed selection input set is nominal speed (d1-09). When the leveling speed signal is set, the inverter starts to decelerate to the leveling speed. The leveling speed signal has priority over all other speed signals, i.e. the intermediate speed 1 and 2 and the releveling signals are disregarded when leveling speed is selected.
The inverter can be stopped by removing the leveling speed signal or the Up/Down command.
CAUTION: This sequence can be risky if e.g. the speed selection doesn’t work for any reason (broken wire etc.).
DC Injection/ zero servo
DC Injection/ zero servo
Speed
Hardware BB
Up/Down
Leveling speed
The following speed selection table shows the different speeds and the according digital inputs.
Terminal function
Nominal Speed command (H1-=80)
Nominal
Speed d1-09
N/A
Intermed.
Speed 1 d1-10
N/A
Intermed.
Speed 2 d1-11
N/A
Intermed.
Speed 3 d1-12
N/A
Relevel.
Speed d1-13
N/A
Leveling
Speed d1-17
N/A
Intermediate speed command (H1-=81)
Releveling speed command (H1-=82)
Leveling speed command (H1-=83)
0
0
0
1
0
0
1
1
0
0
1
0
X
X
1
* 0 = disabled, 1 = enabled, N/A = not available, X = no meaning
The intermediate speed 2 can not be selected using this configuration.
6
6-
9
6
Emergency Stop
If a digital input terminal (H1-) is set to 15 or 17 (emergency stop), this input can be used to fast stop the inverter in the case of emergency. In this case the emergency stop deceleration time set in C1-09 is used. If the emergency stop is input with an NO contact, set the multi-function input terminal (H1-) to 15, if the emergency stop is input with an NC contact, set the multi-function input terminal (H1-) to 17.
After the emergency stop command has been input, the operation cannot be restarted until the Inverter has stopped. To cancel the emergency stop, turn OFF the run command and emergency stop command.
Related parameters
Parameter
No.
C1-09
Name
Emergency stop time
Factory
Setting
Change during
Operation
1.50 s No
V/f
A
Control Methods
Open
Loop
Vector
Closed
Loop
Vector
A A
Closed
Loop
Vector
(PM)
A
Multi-function Digital Inputs (H1-01 to H1-05)
Set
Value
15
17
Emergency Stop, NO contact
Emergency Stop, NC contact
Function
V/f
Yes
Yes
Control Methods
Open
Loop
Vector
Closed
Loop
Vector
Yes
Yes
Yes
Yes
Closed
Loop
Vector
(PM)
Yes
Yes
6-
10
Inspection RUN
The inspection run can be activated in two ways:
1. A digital input can be used if parameter d1-18 = 1 or 2. Therefore a inspection speed must be set and any of the digital inputs must be set to “Inspection Run Selection” (H1-=84) (see below).
2. A speed reference comparison value (parameter S3-19) decides if inspection run is activated or not. This function work only if parameter d1-18 = 0 or 3 and if the inspection speed command is not assigned to any digital input (H1-K84).
Related parameters
Parameter
No.
d1-14
S3-03
S3-19
Name
Inspection Speed
Inspection Deceleration time
Inspection speed detection upper level
Factory
Setting
Change during
Operation
25.00 Hz
50.00%
0.0 sec
0.00 Hz
No
No
No
V/f
A
A
A
-
Control Methods
Open
Loop
Vector
Closed
Loop
Vector
A
A
A
-
A
A
A
-
Closed
Loop
Vector
(PM)
-
A
A
A
Multi-function Digital Inputs (H1-01 to H1-05)
Set
Value
84 Inspection Run Selection
Function
V/f
Yes
Control Methods
Open
Loop
Vector
Closed
Loop
Vector
Yes Yes
Closed
Loop
Vector
(PM)
Yes
Inspection Run Selection by Digital Input
The inspection run digital input must be set before the Up/Down signal is set. During the start of the inspection RUN, the normal brake sequence is used and the inverter accelerates to the inspection speed (d1-14). The stop method depends on the setting of parameter S3-03.
Inspection Speed Selection by Comparison Value
Using this function the inverter can detect the inspection speed by the selected speed reference. The speed must be selected before the Up/Down signal is set. If S3-04 < selected speed O S3-19 the selected speed is regarded as inspection speed. The normal start sequence is used, the stop method depends on the setting of parameter S3-03.
Inspection Run Stop Behavior
S3-03 = 0.0 sec., Stop without deceleration ramp
The inverter stops when the Inspection Speed command or the Up/Down command is removed. In this case:
•
The inverter output is cut by baseblock immediately
•
•
The brake open signal is removed immediately
The contactor control output is removed immediately
6
6-
11
6
The falling edge of the Inspection Speed command or UP/DOWN commands triggers the contactor open command, the motor brake close command and the base block.
Inspection RUN
(Stop by Up/Down signal removal)
Inspection RUN
(Stop by Inspection Speed signal removal)
DC Injection/ zero servo
DC Injection/ zero servo
Speed
Hardware BB
Up/Down (D/I)
Inspection Speed
Internal RUN
MC closed (D/O)
Brake opened (D/O)
Speed
Hardware BB
Up/Down (D/I)
Inspection Speed
Internal RUN
MC closed (D/O)
Brake opened (D/O)
S3-03 > 0 sec., Stop with deceleration ramp
The inverter stops when the Inspection Speed command or the Up/Down command is removed. In this case:
•
The output frequency is reduced using the deceleration time set in S3-03.
•
•
When the minimum frequency is reached the brake open signal is removed immediately and the contactor control output is removed immediately
The inverter output is cut after the brake open command removal.
The falling edge of the Inspection Speed command or UP/DOWN commands triggers the deceleration.
Inspection RUN
(Stop by Up/Down signal removal)
Inspection RUN
(Stop by Inspection Speed signal removal)
DC Injection/ zero servo
DC Injection/ zero servo
Speed
Hardware BB
Up/Down (D/I)
Inspection Speed
Internal RUN
MC closed (D/O)
Brake opened (D/O)
Speed
Hardware BB
Up/Down (D/I)
Inspection Speed
Internal RUN
MC closed (D/O)
Brake opened (D/O)
INFO
During inspection run the carrier frequency is reduced to 2 kHz.
6-
12
Brake Sequence
The L7 supports two types of brake sequences, one with torque compensation at start using an analog input value and one without torque compensation at start.
Related Parameters
Parameter
No.
Name
H3-15
S1-01
S1-02
S1-03
S1-04
S1-05
S1-06
S1-07
S1-16
S1-17
S1-18
S1-19
S1-20
S1-21
S1-22
S1-23
S1-24
S1-25
S1-29
S1-30
S1-31
Terminal A1 function selection
Zero speed level
DC injection braking current at start
DC injection braking current at sop
DC injection braking/Zero speed time at start
DC injection braking/Zero speed time at stop
Brake open delay time
Brake close delay time
Run delay time
DC injection current gain at regeneration
DC injection current gain at motoring
Output contactor open delay time
Zero-servo gain
Zero-servo completion width
Starting torque compensation increase time/ starting torque fade-out time
Torque compensation gain in Down direction
Torque compensation bias in Up direction
Torque compensation bias in Down direction
Torque fade out speed level
Torque fade out compensation time
Torque limit fade out time at stop
Factory setting
0 i
50%
50%
0.40 sec
0.60 sec
0.20 sec
0.10 sec
0.10 sec
100%
20%
0.10 sec
5
10
500 ms
1.0
0.0%
0.0%
0.0 Hz
1000 msec
0 msec
Change during operation
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
V/f
-
-
-
-
-
-
-
-
-
-
A
A
-
A
A
-
A
1.2 Hz
A
A
A
A
-
-
-
-
-
-
-
Control Method
Open
Loop
Vector
Closed
Loop
Vector
A
A
A
A
A
-
-
A
0.5 Hz
A
A
A
A
A
A
-
A
A
-
A
A
A
0.1 Hz
-
-
A
A
A
A
A
A
-
A
A
-
A
A
Closed
Loop Vector (PM)
A
A
0.5 Hz
A
A
-
-
A
A
A
A
A
A
-
A
A
A
A
A
A
A
Multi-function Digital Inputs (H1-01 to H1-05)
Set Value Function
80 to 84
86
Speed selection inputs (refer to
page 6-5, Speed Selection Sequence Using Digital
)
Contactor closed answer back signal
Multi-function Digital Outputs (H2-01 to H2-03)
V/f
Yes
Yes
Control Methods
Open
Loop
Vector
Closed
Loop
Vector
Closed
Loop
Vector
(PM)
Yes Yes Yes
Yes Yes Yes
Set Value
33
40
41
Zero servo end
Brake release command
Output contactor close command
Function
V/f
-
Yes
Yes
Control Methods
Open
Loop
Vector
-
Yes
Yes
Closed
Loop
Vector
Yes
Yes
Yes
Closed
Loop
Vector
(PM)
Yes
Yes
Yes
6
6-
13
6
Brake Sequence without torque compensation at start
To use the brake sequence without torque compensation at start,
•
•
the Terminal A1 function must be set to 0 (H3-15 = 0, speed reference input) the AI-14B Ch2 and Ch3 input functions must not be set to 14. (H3-05/09
≠ 14, torque reference not selected)
The figure below shows the timing chart for this brake sequence.
Selected Speed
S1-04
Zero servo/
DC Injection at start
Leveling Speed
S1-05
Zero servo/
DC inhection at stop
Speed
RUN
Inverter Hardware BB D/I
Contactor Control D/O
Contactor Confirmation D/I
Brake Open Command t1 t2 t3 t4 t5 t6 t7
Fig 6.2 Timing chart of Brake sequence without torque compensation at start t8 t9
The timing chart above is divided in time zones. The following table explains the sequence in each time zone.
Timing Description
The inverter gets the direction signal (UP/DOWN) t1 t2 t3 t4 t5 t6 t7 t8 t9
The inverter gets the hardware base block disable signal (Not BB condition).
The inverter receives the speed reference signal.
The inverter sets the contactor closed signal.
The inverter waits for the contactor confirmation signal. If no digital input is set to contactor confirmation signal (H1-=86), the sequence is proceeded after exceeding the operation start delay time (S1-16).
When the RUN delay time (S1-16) has elapsed, DC injection (Open Loop) or zero servo operation (position lock in
Closed Loop) is started.
When the brake open delay time (S1-06) has elapsed, the inverter sets the brake open command.
The inverter keeps DC injection/zero speed operation until
* the time S1-04 – S1-06 has elapsed if S1-06 < S1-04 or
* the time S1-06 has elapsed if S1-06 > S1-04 (try to avoid this setting since the motor could be driven against the brake)
The speed is increased to the selected speed and is kept constant until the leveling speed is selected.
The speed is decreased to the leveling speed and is kept constant until the stop signal is given (depending on d1-18 either
Selection Sequence Using Digital Inputs
The speed is decreased to the zero speed level.
When the zero speed level is reached (S1-01), the DC injection (Open Loop) or zero servo operation (position lock in
Closed Loop) is applied for the time set in S1-05.
When the brake close delay time (S1-07) has elapsed, the brake open command is removed.
The inverter continues DC Injection (Open Loop) or zero speed operation (Closed Loop) until the time S1-06 – S1-07 has elapsed. After that the inverter output is shut down and the hardware base block signal must be set.
After the output contactor open delay time (S1-19) has elapsed, the output contactor close signal is removed.
6-
14
Brake Sequence with Torque Compensation at Start
(Closed Loop Vector for IM and PM only)
Torque Compensation function
If a load measuring device is installed in the elevator, an analog input can be used to input a torque compensation value to the inverter. This function requires Closed Loop Vector control for IM or PM.
The input torque compensation value is latched when the direction command is given. At the start it is increased from zero to the latched value using the torque increase time set in parameter S1-22. The torque compensation value fades out to 0 using the time constant S1-30 after the speed has reached the torque compensation fade out level.
The torque compensation function can be adjusted using the parameters shown in the block diagram below.
Adjust the parameter so that the torque compensation value is zero when the elevator is balanced.
terminal A1
H3-15=1
H3-16
%
Torque compensation bias during raising
S1-24
+ +
UP direction torque compensation
Torque compensation
H3-17
0 10v
S1-23
Torque compensation gain
+ during lowering
S1-25
+
DOWN direction
Torque compensation bias during lowering
The torque compensation input source can be selected as follows:
•
the analog input A1 can be used, if b1-01 is not set to 1 (speed reference source is not the A1 input) and the
A1 function is selected for torque compensation (H3-15=1)
•
•
the channel Ch1 of an AI-14B option card can be used, if b1-01 is not set to 1 (speed reference source is not the A1 input) and the A1 function is selected for torque compensation (H3-15=1) one of the input channels Ch2 or Ch3 of an AI-14B option card can be used when the input function for is set to “Torque Compensation” (H3-05 or H3-09=14). The setting of b1-01 has no influence here.
Brake Sequence
The figure below shows the timing chart for this brake sequence.
Selected Speed
S1-04
Zero speed control at start
Torque compensation
fade out level S1-29
Leveling Speed
Speed
Torque comp level at start
300% Torque
Comp
Torque compensation fade out using S1-30 when S1-29 is reached
Torque Comp increase time
S1-22
RUN
Inverter Hardware BB D/I
Contactor Control D/O
Contactor Confirmation D/I
Brake Open Command t1 t2 t3 t4 t5 t6 t7
Fig 6.3 Timing chart of Brake sequence with torque compensation at start
S1-05
Zero servo control at stop t8 t9
6
6-
15
6
The timing chart above is divided in time zones. The following table explains the sequence in each time zone
Timing Description
The inverter gets the direction signal (UP/DOWN) t1 t2 t3 t4 t5 t6 t7 t8 t9
The inverter gets the hardware base block signal disable signal (Not BB condition).
The inverter receives the speed reference signal.
The inverter sets the contactor close signal.
The inverter waits for the contactor confirmation signal. If no digital input is set to contactor confirmation signal (H1-=86), the sequence is proceeded after exceeding the operation start delay time (S1-16).
The zero speed control operation is started.
The analog torque compensation input is latched and the torque compensation value is increased from zero to the latch value using the time constant set in parameter S1-22.
After reaching the torque compensation level at start, the inverter sets the brake open command.
The brake opens and the zero speed operation (no position lock) is continued until S1-04 has elapsed.
The speed is increased to the selected speed and is kept constant until the leveling speed is selected.
During acceleration, when the torque fade out speed level S1-29 is reached, the torque compensation value is fade out to 0 using the time constant set in S1-22.
The speed is decreased to the leveling speed and is kept constant until the stop signal is given (depending on d1-18 either by removing the direction signal, by removing the leveling signal or by deleting the speed inputs, see
).
The speed is decreased to the zero speed level.
When the Zero Speed Level (S1-01) is reached, zero servo operation (position lock in Closed Loop) is applied for the time set in S1-05. When the brake close delay time (S1-07) has elapsed, the brake open command is removed.
The inverter continues the zero speed operation until the time S1-06 – S1-07 has elapsed. After that the inverter output is shut down and the hardware base block signal must be set.
After the output contactor open delay time (S1-19) has elapsed, the output contactor close signal is removed.
Torque Limit Fade Out Function (Closed Loop Vector for PM)
The torque limit fade out function smoothly reduced the torque limit to 0 after the zero speed time at stop has elapsed. It thereby can help to prevent shocks or vibrations when the motor stops and the brake is closed. The used time constant can be set in parameter S1-31. The function can be used in Closed Loop Vector control for
PM motors only (A1-02 = 6).
Zero Speed Control / Zero Servo (position lock)
In Closed Loop Vector control the inverter uses zero speed or zero servo control during the brake open or close procedure.
Zero Speed Control:
The inverter keeps the motor speed at zero, a roll-back is not compensated. This method is used for the start with a torque compensation value by analog input. The strength of the control can be tuned using the ASR
page 6-32, Automatic Speed Regulator (ASR) (Closed Loop Vector only)
ing details.
Zero Servo Control:
The inverter tries to keep the rotor position, i.e. a roll back is compensated. This method is used for the start when no torque compensation is used and always for during stop (without and with torque compensation).
Additionally to the ASR parameters C5- the zero servo control can be tuned using the parameter S1-20
(Zero servo gain).
•
•
Increase S1-20 if there is a rollback when the brake opens.
Decrease S1-20 if vibrations occur when the zero servo function is active.
If a digital output is set to “Zero Servo End” (H2-=33), this output can be used to signalize, that the rotor position is within a certain bandwidth around the zero position which can be set in parameter S1-21 (the bandwidth is set in PG pulses and must be set 4 times of the allowable actual PG pulses).
6-
16
Short Floor Operation
The short floor operation is activated if the leveling speed command is set before the nominal speed was reached. The L7 inverter supports 2 methods of short floor operation:
•
Simple short floor operation which can be enabled by setting S3-01 = 1.
When the leveling speed input is set and the reached speed is higher than 40% of the nominal speed, the inverter decelerates to 40% and keeps this speed for a calculated time before it decelerates to the leveling speed and finally stops. If the reached speed is below 40% of the nominal speed, the inverter accelerates to
40% speed and keeps it for a calculated time before it decelerates to the leveling speed.
If the leveling input is set during constant speed run and the speed reference is lower than 40% of the nominal speed, the speed is hold for a calculated time in order to minimize the leveling distance. If the speed reference is higher than 40% but lower than the nominal speed, the speed is decreased to t 40% first, is hold for a calculated time an then decreased to the leveling speed.
•
Advanced short floor operation which can be enabled by setting S3-01 = 2.
If the leveling speed command is set the inverter calculates the optimal speed using the speed reference, two gain factors (S3-21/22) and a time constant (S3-20). If the leveling input is set before the optimal speed has been reached, the inverter accelerates to the optimal speed and keeps it for the time constant S3-
20. If the leveling input is set when the optimal speed was exceeded, the inverter keeps the reached speed for a certain time before it decelerates to the leveling speed.
The table below shows the behavior of the short floor functions under different conditions.
Condition Standard Short Floor
Leveling Signal before 40% of the nominal speed has been reached v
Nominal
Advanced Short Floor
Leveling speed signal before V
Opt
is reached
V
Nominal
S3-20
V
Opt
40% x
V
Nominal
During Acceleration
V
Leveling
V
Leveling f out f out
Leveling command
Leveling Signal after 40% of the nominal speed has been reached.
Leveling command
Leveling speed signal after V
Opt
has been reached
V
Nominal v
Nominal
40% x
V
Nominal
V
Opt
Optimal speed profile
(S2-20 calculated)
V
Leveling f out
V
Leveling
Leveling command f out
Leveling command
6
6-
17
6
Condition Standard Short Floor
Leveling command during run with constant speed higher than 40% v
Nominal
40% x
V
Nominal
Advanced Short Floor
During Run with constant speed
V
Leveling f out
Leveling command
Leveling command during run with constant speed lower than 40% v
Nominal
40% x
V
Nominal
V
Leveling f out
Leveling command
Related parameters
Parameter
No.
d1-09 d1-18
S3-01
S3-04
S3-05
S3-20
S3-21
S3-22
Name
Nominal Speed
Speed reference priority selection
Short floor operation
Nominal / Leveling Speed detection level
Nominal speed for short floor calculation
Minimum constant speed time
Distance calculation acceleration time gain
Distance calculation deceleration time gain
No effect
Factory
Setting
Change during
Operation
50.00 Hz
100.00%
1
0
0.0 Hz
0.0Hz
0.0 sec.
150.0%
150.0%
No
No
No
No
No
No
No
No
A
A
A
A
A
A
A
Q
-
V/f
A
A
A
A
A
A
A
Q
-
Control Methods
Open
Loop
Vector
Closed
Loop
Vector
Closed
Loop
Vector
(PM)
-
A
A
A
A
A
A
A
Q
-
A
A
A
A
A
A
Q
A
Simple Short Floor Operation Setup
•
•
•
The short floor function can be activated by setting parameter S3-01 to 1.
If parameter d1-18 is set to 0 or 3 (multispeed input), the set value of parameter S3-05 is taken as nominal speed reference for the short floor calculation. Additionally it is required to use the nominal/leveling speed detection (refer to
page 6-6, Nominal / Leveling Speed Detection with Multi Speed Inputs
).
If parameter d1-18 is set to 1 or 2 (dedicated speed inputs), the value of parameter d1-09 is taken as nominal speed. The set value of S3-05 has no meaning. The nominal/leveling speed detection must not be used.
Advanced Short Floor Operation Setup
•
•
•
The advanced short floor operation can be activated by setting parameter S3-01 to 2.
If parameter d1-18 is set to 0 or 3 (multispeed input), the speed reference value, which was selected at the start, is taken as nominal speed for the speed pattern calculation. Parameter S3-04 is used for the leveling speed detection (refer to
).
If parameter d1-18 is set to 1 or 2 (dedicated speed input), the value of parameter d1-09 is taken as nominal speed for the speed pattern calculation.
6-
18
Setup the Acceleration and Deceleration Gain (S3-21, S3-22)
These parameters are used for the optimal speed calculation to compensate the S-curves (S-curves are not considered in the optimal speed calculation).
•
Increase the gains S3-21 and S3-22 if the leveling time is too short or the calculated optimal speed is too high.
•
Decreases the gains S3-21 and S3-22 if the leveling time is too short of the calculated optimal speed is too low.
IMPORTANT
1. S-Curves are not considered in the optimal speed calculation and have to be compensated by the gains S3-21 and S3-22.
2. A too low gain setting can result in a too high optimal speed and too short leveling time. Very low settings can lead to an overrun. Do not set the values lower than 100% (100% means, that the Scurve is not compensated.
3. If parameter d1-18 is set to 0 or 3 and the leveling speed input is released during short floor operation, the inverter accelerates or decelerates to the selected reference speed.
4. If the Dwell function (b6 parameters) is activated, the dwell function is performed during short floor operation but it is not considered in the optimal speed calculation. The influence of the Dwell function must be compensated using the gains S3-21 and S3-22.
5. The advanced short floor function does not work during rescue operation and inspection run.
6. If the speed reference is input using an analog input the advanced short floor function should not be used.
7. If the advanced short floor function is used, the following parameter settings should be in given range:
9.6 Hz
O
E1-04
O
100 Hz
4.8 Hz
O
d1-08
O
100Hz
0.1 sec.
O
C1
O
50 sec.
6
6-
19
डाउनलोड
सार्वजनिक लिंक अपडेट किया गया
आपकी चैट का सार्वजनिक लिंक अपडेट कर दिया गया है. You may view and manage your chat links after registration here.
दस्तावेज़ सार्वजनिक लिंक
विज्ञापन