Omron L7 Closed / Open Loop - International Lift Equipment

Omron L7 Closed / Open Loop - International Lift Equipment
FM 40432
INTERNATIONAL LIFT EQUIPMENT LIMITED
Head Office
Units 1 & 2 Highams Park Industrial Estate
Larkshall road
LONDON
E4 7HS
Telephone
0208 527 9669
Telefax
0208 531 0936
www.ileweb.com
Factory
Wanlip Road
Syston
LEICESTER
LE7 1PD
Telephone
0116 269 0900
Telefax
0116 269 0939
e-mail
[email protected]
TECHNICAL MANUAL FOR THE
OMRON L7 VARISPEED FLUX VECTOR INVERTER
(For closed/open loop operation with Interflite and Skycom
Software Control)
THIS MANUAL APPLIES TO SYSTEMS MANUFACTURED BY
INTERNATIONAL LIFT EQUIPMENT AFTER 1st SEPTEMBER 2003
Issue No. 1
WE RESERVE THE RIGHT TO ALTER WITHOUT GIVING PRIOR NOTICE TECHNICAL
DATA, DIMENSIONS AND WEIGHTS DESCRIBED IN THIS MANUAL
File name:-Omron_Sky_Inter L7.DOC
Last amended:-01/09/2003
CONTENTS.
A. Introduction
Page 3
B. Sequence of events
Page 4
C. Input and output connections
Page 5-7
D. Control Panel
Pages 8-18
E. Parameters and description
Pages 19-20
F. Auto-tuning
Pages 21
G. Commissioning procedure
Page 22-28
H. Single floor run operation
Pages 29-32
I. Fault Finding
Pages 33-36
2
SECTION A
Introduction
The ILE Flux Vector Control inverter for squirrel cage motors utilises state of the art electronics, to
control an AC Induction Motor's speed and torque, full current vector control based on advanced
control logic can be achieved. In a lift application without the need of a speed feedback element up to
0.99 m/s, and utilising encoder feedback from 1.0 m/s and above.
An accurate motor model is calculated from measurements of the motor voltage and motor current.
THEREFORE WITH BOTH OPEN LOOP VECTOR AND CLOSED LOOP FLUX
VECTOR OPERATION, A NON-ROTATING TUNING RUN MUST BE
PERFORMED. (SEE SECTION F)
The system enhances single speed lifts with variable speed performance for new and existing lifts,
whilst decreasing wasteful heat loss within the motor typical of Variable Voltage Thyristor Controlled
regulator systems.
This manual will hopefully give a summarised version of the Omron control options and assist in
setting up.
Further, more detailed, information is available in the Omron L7 Varispeed user manual. We suggest
that, for a first time user, the information contained in this document is studied.
3
SECTION B
Sequence of Events
Starting
Starting is initiated by the receipt of either an UP or a DOWN direction signal. The direction relays
also energise the STR relay which connects the drive internal 24v supply to the selected drive inputs
S1-S7 and BB. The drive now has speed and direction signals which results in M3-M4 Travel O/P (H202=41) contacts closing energising the MC+MC1 contactors. Parameter S1-06 sets the delay before
contacts M1-M2 Brake O/P (H2-01=40) close energising BKC which lifts the electro-mechanical
brake, this gives feedback to the processor via the STR input which signifies that the lift is moving.
The speed curve is started after the time S1-04 DC injection time at start and the lift accelerates to
target speed. The above sequence is designed to give a smooth start by allowing the brake to fully lift
before starting the journey. The fault output MB-MC is opened when there is a fault condition in the
inverter, this prevents travel taking place.
Stopping
Consider the lift is travelling at high speed. On receipt of a slowing signal the high speed signal is
removed from the drive. The lift decelerates, and targets levelling speed under the influence of the
deceleration and S curve parameters until levelling speed is achieved. Upon reaching the stopping
zone, MSU and MSD operate, this removes all speed signals and the lift targets zero. The following
sequence then occurs: a)
When zero speed is reached the delay before the brake is released via contacts M1-M2 is set by
time S1-07 brake release time, the drive keeps zero speed control, the duration is set via S1-05
DC inj time @ stop, and the journey is completed.
b)
The STR relay drops after the brake is released via a timer in Skycom called stop time, this
cuts off the transistors in the inverter via terminal BB which is configured as a baseblock
c)
The drive output contactor releases after a time period set by S1-19, this opens M3-M4 contact
which releases MC-MC1 removing the 3 phase from the motor. A time delayed safety back-up
STR contact is also situated in the MC-MC1 line and this will release 2 seconds after direction
is cancelled. The above delays allow the current on both the contactor contacts and regulator
transistors to decay to zero before switching. This sequence of events allows a smooth stop and
prolongs both contactor and transistor life expectancy.
4
SECTION C
Input and output connections
The following is a list of the inverter inputs: Terminal No. Description for Interflite and Skycom
S1
S2
S3
S4
S5
S6
S7
BB
SC
Up enable
Down enable
Nominal speed
Inspection speed (Test)
Not used
Levelling speed
Contactor feedback
Baseblock
Is the 24v supply common from the drive which is switched
via relays to the signal I/Ps listed above.
The following is a list of output terminals:Terminal No.
M1-M2
M3-M4
M5-M6
Description for Interflite and Skycom
Energises BKC contactor to operate Electro-Mechanical brake
Energises MC-MC1 contactors connecting the motor.
Level contacts for door opening configured via S1-27, for ADO set to 4HZ, for
none advance door opening set to 0HZ
5
6
7
SECTION D
Control panel
The removable keypad is the device used for controlling and programming the Omron L7 Varispeed
drive. The control panel has 11 keys and the display has 5 lines. The Control Panel can be attached
directly to the inverter or it can be mounted externally. To change a parameter enter the group the
parameter you wish to change is in, then move to the desired parameter and press the enter key, the far
left hand unit will flash and by pressing the reset key you can move along the units to the one you wish
to change the value of, then by using the arrow keys the value can be adjusted to the new value
required, then press the enter button again to enter the new value and entry accepted will be displayed.
8
9
10
11
12
13
14
15
16
17
18
SECTION E
Parameters
PROGRAMMING MENU
Group A
A1-02 Control method, Sets control method.
2 is open loop vector
3 is closed loop vector
Group C
C1-01 Accel time 1
C1-02 Decel time 1
Set to 1.5 seconds
Set to 1.5 seconds
C2-01 Scrv Acc @ Start Set to 0.5 seconds
C2-02 Scrv Acc @ End Set to 0.5 seconds
C2-03 Scrv Dec @ Start Set to 0.5 seconds
C2-04 Scrv Dec @ End Set to 0.5 seconds
C2-05 Scrv
@ Lev Set to 0.5 seconds
C3-01 Slip Comp Gain
C3-02 Slip Comp Time
C3-03 Slip Comp Limit
Set to 1
Set to 2000ms (OLV only)
Set to 200% (OLV only)
C6-02 Carrier Freq
Set to Hex 0003
Group D
D1-09 vn Reference
D1-10 v1 Reference
D1-14 vi Reference
D1-17 vl Reference
Set to 47HZ (High Speed)
Set to 30HZ (Medium Speed)
Set to 15HZ (Inspection Speed)
Set to 4HZ (Levelling Speed)
Group F
F1-01 PG Pulses per rev
Set to 1024 (CLV only)
Group L
L6-02 Torq det level
Set to 150%
Group S
S1-04 Sets DC Injection at start
S1-05 Sets DC Injection at stop
S1-06 Sets Brake open delay
Set to 0.7 seconds
Set to 0.8 seconds
Set to 0.2 seconds
19
S1-07 Sets Brake close delay
S1-22 Torque comp [email protected]
S1-23 Torque comp gain lowering
S1-24 Torque comp bias raising
S1-25 Torque comp bias lowering
Set to 0.3 seconds
Set to 500ms (CLV only)
Set to 1.0
(CLV only)
Set to 0%
(CLV only)
Set to 0%
(CLV only)
T1-01 Sets the Autotuning Mode
T1-02 Sets Motor rated power
T1-03 Sets Motor rated voltage
T1-04 Sets Motor rated current
T1-05 Sets Motor rated frequency
T1-06 Sets Motor number of poles
Set to 1
(non rotating autotune)
Set as required, see motor data plate.
Set as required, see motor data plate.
Set as required, see motor data plate.
Set as required, see motor data plate.
Set as required, see plate, 1000rpm=6 pole
1500rpm=4 pole
Set as required, see motor data plate.
Set as required, see motor data plate.
Set as 50% of T1-04 ( Motor rated current)
Group T
T1-07 Sets Motor rated speed
T1-08 Sets PG pulses/rev
T1-09 Sets Motor no load current
20
SECTION F
Auto- tuning
Press the Menu button until the Auto –Tuning Mode prompt is displayed, press “DATA/ENTER”
key, enter all the required information in Auto-tuning parameters T1-01 to T1-09, when completed
press the “Increment” key once, Auto-tuning is now ready, press the “RUN” key and fit a temporary
short across terminals TUD and TDN, the main contactor will actuate and Auto-tuning will now
commence, after a short period the Digital Operator should display “GOAL”
Auto-tuning is now complete.
(On earlier versions of the L7 invertor it may be necessary to temporarily short terminals M3 & M4 to
allow energisation of the main contactors)
SECTION G
21
Commissioning procedure
N.B Commissioning procedure is to be carried out by competent personnel only.
WARNING : DO NOT TURN POWER ON & OFF MORE THAN 5 TIMES EVERY
15 MINUTES OR INTERNAL COMPONENTS MAY BE DAMAGED !!!
Equipment Required.
1. A Tachometer.
2. An A.C current meter. (Moving coil, not digital)
Pre Switch On Checks.
1. Check all site wiring and mains cable rating are correct.
2. Check the installation is in conformance with the EMC standards.
3. Ensure the lift is counter balanced correctly.
4. Ensure the encoder is fitted correctly aligned and connected to the controller correctly if required
5. Ensure the lift doors cannot open (can be done by for the Interflite by switching on DIL switch SP1
and PRPTT or on Skycom by disabling the doors by the parameter in the door setup menu).
.Speed settings.
NOTE: ALL SPEED SETTINGS ARE IN Hz NOT RPM.
1. Simulate the Test Up button, check the lift runs in the UP Direction on test speed and the UP
contactor is energised. If the lift runs DN reverse two of the motor phases and A&B pulses if
required, then retest.
2. Simulate a Test Dn button and check the lift moves DN at test speed and the speed is the desired
value, if not adjust speed D1-14.
3. Ensure all the limit switches are operating correctly and place the lift empty car at the bottom floor,
Switch the lift to NORMAL and run the lift UP in high speed, and ensure the lift slows into floor
correctly, repeat for the down direction.
4. Place the lift empty car at the top floor and run the lift DN, ensure the high speed is the same in both
directions, also ensure the levelling speed is the same in both directions, if not follow slip
compensation procedures detailed in pages 24-26.
Note: At open loop control feed forward type slip compensation (S1-XX) is acting additional to
standard slip compensation. Therefore motoring site levelling speed might be higher than set value.
Please monitor and adjust S1-02 and C3-01 to have the same speed in both directions.
22
5. Check the contract speed is correct for the site and adjust the parameters D1-09 for high speed and
D1-17 for levelling speed to the required values.
6. If the lift overshoots floor level or has a long levelling time into floor then adjust the slowing
distance combined with deceleration rate C1-02 and the s-curves C2-03, 4 to acquire a reasonable
comfort levelling with a minimum levelling time.
.
7. Place the lift empty car at the top floor and run the lift DN in high speed, ensure when the
lift slows the lift levelling speed is equal in the UP and DN direction.
Setting the acceleration and starting.
1. Run the lift and note the acceleration rate.
2. Adjust the Acceleration rate C1-01 and s-curve C2-01, 2 parameters for the desired acceleration that
is required.
Stall test
1. Disconnect the brake and isolate. Switch the lift to test and switch on the controller.
2. Place the clamp meter on a phase of the incoming mains.
3. Simulate the test up push and the meter should be showing more than 1.5*flc. If the meter is
showing 1.5 * flc or more, the regulator trips in the time specified in parameter L6-03. To reset
switch the controller off then on.
4. Repeat in the DN direction.
5. Reconnect the brake.
N.B. To reset the regulator after a fault press the RESET or switch the panel off for at least 30
sec then on again. After commissioning run the lift for at least 1 hour and ensure floor levels are
consistent and the lift performs correctly.
23
24
25
26
•
SPEED SELECTION
•
PRIORITIES DEFINED AS FOLLOWS D1-18=1 is preferred type for safety :
•
D1-18 = 1
(high speed has priority)
levelling STOPS. If levelling command is not
configured, Up/Down STOPS.
wires break = levelling
speed
Hardware BB
Up/Down
leveling
selected speed
D
Injection
zero servo
DC
Injection
zero servo
no
input is set
•
DECELERATION AND S-CURVE SETTINGS
•
C1-11 changes decel time from C1-02 to C1-08 only in decel section.
C1-02
C1-11
C1-08
C1-01
•
Additional S-Curve setting C2-05 for STOP. Very useful to modify stopping
point without affecting deceleration ride quality.
C2- 02
00000000000002
C2-03
C2-04
C2-05
C2-01
27
t1
t1-t2
t2-t3
t1-t3
DC inj time starts
DC inj time during brake applied S1-06 = 0.2 seconds
DC inj time during brake lifted
S1-04 to S1-06 = 0.5 seconds
DC inj time at start
S1-04 = 0.7 seconds
t7
t7-t8
t8-t9
t7-t9
DC inj time starts
DC inj time before brake applied S1-07 = 0.3 seconds
DC inj time during brake applied S1-05 to S1-07 = 0.5 seconds
DC inj time at stop
S1-05 = 0.8 seconds
28
SECTION H
Single Floor Run Operation with SKYCOM Control System
Single Floor Run operation, or where the lift is unable to reach high speed on a single journey can be
set-up using medium speeds with a PX delay system. Parameter settings for different speeds between
floors and slowing delays (PX delays) for each speed at each floor allow the user to set the lift to run
between certain floors at the required reduced speed and the PX can be delayed to give the required
slowing distance for that reduced speed to minimize flite time and hence levelling time.
Consider the following example:
i)
Contract Speed 1.6m/s
ii)
Floor Height 3m
iii)
Omron Top Speed Setting(D1-09 Reference=47hz)
iv)
Omron Medium Speed 1 Default Setting (D1-10 Reference=37hz)
v)
Slowing Distance(on top speed) 2.3m approx.
SPEED
PXU(after delay)
PXU
MSU MSD
PXD
PXD(after delay)
3
3m
3m
1.2m
2.3m
1000ms delay
2.3m
1.2m
2.3m
1000ms delay
1000ms delay
1.2m
2
Maximum Speed
Between a Single
Floor Run
Fig 1
TIME
SPEED
Average Speed
Between a Single
Floor Run
Fig 2
TIME
2.3m
1000ms delay
1.2m
1
Vertual PX created
By delay in Skycom
Set-up Procedure
1)
The stepping/slowing magnets are set to the maximum slowing distance 2.3 meters (i.e. slowing
distance for top speed). Also all PX delays should be set to 0s.
2)
Set the medium speed 1 frequency in the Inverter (Reference 5) initially to the same as top
speed i.e. 50Hz.
3) Run the lift between the single floor and adjust the PX delay (in milliseconds) for that floor to allow
the lift to reach the highest speed possible and to give the desired levelling time. i.e. too big a
delay will cause the lift to overshoot floor level and too little will give excess levelling time.
For this example let us assume it to be 500ms.
4)
Run the lift between the single floor and make a note of the maximum frequency reached as
displayed in the readout on the Omron keypad Interface this value is now entered in to speed
29
reference 5. For this example let us assume it to be 42Hz. The speed time graph should be as
Fig 1 above.
5) If the ride quality is bumpy at the time the speed changes, then it is now necessary to reduce the
speed and increase the PX delay until a satisfactory ride quality is achieved. For example the
best ride quality may be found with a speed of 38Hz and a PX delay of 1000ms. This would
relate to Fig 2.
6) The single floor run is now setup and assuming equal floor heights, the PX delay and speed
reference 5 can be used for all relevant floors, otherwise the same procedure is adapted for the
other floor to floor heights.
From the previous example the parameter settings are illustrated below via the use of the
SKYCOMWIN P.C./Lap top software, i.e. top speed for a single floor run = 38Hz with a PX delay of
1000ms.
From below it can be seen that at floor 1 the speed up to floor 2 is set for Medium Speed 1.
Also when the lift is approaching floor 1 in the down direction on Medium Speed 1 (i.e. from level 2)
the PX delay is set to 1000ms.
30
.
From below it can be seen that at floor 2 the speed up to floor 3 and down to floor 1 is set for Medium
Speed 1. Also when the lift is approaching floor 2 in the down direction on Medium Speed 1(i.e. from
level 3) the PX delay is set to 1000ms and hence the same applies coming up to floor 2 from floor 1.
31
From below it can be seen that at floor 3 the speed down to floor 2 is set for Medium Speed 1. Also
when the lift is approaching floor 3 in the up direction on Medium Speed 1(i.e. from level 2) the PX
delay is set to 1000ms.
These parameters can also be set from the SKYCOM keypad interface. A password level 2 is required
before changing, but can be obtained from ILE on request. Menu options FLOOR SPEED SETUP
allow the floor speeds to be changed, and PX DELAYS SETUP allow the PX delays to be set for each
floor and approach speed.
32
SECTION I
Fault Finding
The following section shows the common fault codes with a description of the fault and cause.
Fault categories
The L7 has the following fault categories
Alarm
Inverter continues Running and alarm D/O will be set
Fault 1
Inverter will stop; the fault output relay is activated immediately. The reset command
Can be accepted when the fault condition has gone.
Fault 2
A fault categorized as fault 2 cannot be reset until the power is switched off and then
Restored.
33
34
35
36
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