ROTACOD Absolute encoders
ROTACOD
Absolute Encoder
ROTACOD Absolute encoders
ROTACOD Absolute encoders
Absolute Encoders
( Fieldbus Encoders )
ROTACOD Absolute encoders
• Absolute encoder generates a digital signal related to the position of a rotary axis
• The value of the signal is transmitted to a control logic that manages the received data
• In presence of a power supply fail the physical position is not lost
• The zero setting of the mechanical part is required only in the initial installation
• No batteries or memories required to keep the position absolute value
ROTACOD Absolute encoders
Absolute Measuring
Systems
ROTACOD Absolute encoders
Working Principle
• The source of signals is a disc with a grated design
forming tracks
• Tracks have zones where light can pass through and
obscured tracks through which light cannot pass
• The light emitted by a lighting source go through the
disc and is collected by a photo-diode on disc’s other
side
• While disc is rotating the photo-diode detects light
variations, switching the output signal on and off
ROTACOD Absolute encoders
Working Principle
• Using multiple tracks, the combination of On and Off of
the single tracks generates an absolute value of position
Track 1
• As power is turned On, this value position is read from
tracks and immediately sent to the output circuit
• If disc has 12 tracks then 212
positions (4096
info/revolution)
are available.
Track 12
• No repetitions of combinations of 1 and 0 are present on
disc (unique code).
• The main disc uses a Gray code as pattern
ROTACOD Absolute encoders
Output signals
0 1 2 3 4 5 6 7 8 9
D0
D1
D2
D3
10
11
12
13
14
Binary
Decimal
23 22 2 1 20
15
0
1
0
1
=
5
1
0
0
1
=
9
1
1
1
0
=
14
• each line data line is a bit
• 1 = bit high / 0 = bit low
• the combination of 1 and 0 gives a coded
value (position) to the control unit
ROTACOD Absolute encoders
Binary Coded Decimal (BCD) Code
4 Bits (8 4 2 1)/ ตัวเลข [0 – 9]
เลขฐานสิ บ
BCD
==>
360
0011 0110 0000
ROTACOD Absolute encoders
Gray code
รห ัสทีอ
่ ยูใ่ นตำแหน่งติดก ันจะมีบท
ิ ทีแ
่ ตกต่ำงก ันเพียง 1 บิท
่ 0010 ลำด ับต่อไปคือ 0110
เท่ำนน
ั้
เชน
้ ระโยชน์มำกในระบบกำรตรวจจ ับ
รห ัสเกรย์จะนำไปใชป
ั
สญญำณด้
วยแสงหรือระบบกำรทำรห ัสด้วยแกนหมุนทำงกล
(machanics) เพือ
่ บอกตำแหน่งของเพลำหมุน
ROTACOD Absolute encoders
Gray and Binary Code
Binary Code
Position 7 > 8
0 1 1 1 = 7
1 0 0 0 = 8
1 1 1 1 = 15 = X
ROTACOD Absolute encoders
กำรแปลงเลข Binary 10110 ให้เป็น Gray code
วิธท
ี ำ
1
0
+
1 1
1
+
1
+
0
1
0
Binary
+
1
Gray code
ROTACOD Absolute encoders
กำรแปลง Gray code 11011 ให้เป็น เลข Binary
วิธท
ี ำ
1
1
+
1
0
+
0
1
+
0
1
Gray code
0
Binary
+
1
ROTACOD Absolute encoders
•
The value sent to the control unit can be as follows:
• BINARY (more bits can change at the same time)
• GRAY (successive values change a bit per time maximum)
• BCD
(binary code for each single number)
•
The absolute value can be sent to the control in several interfaces:
• Parallel
PROS: faster
CONS: many wires to connect
• Serial
PROS: few wires to connect
CONS: speed reduced
• Field-bus
PROS: several devices on the same line, bi-directional data transmission
sophisticated electronics
•
CONS: more
Value is read by the control and used for positioning and control of motors installed on the machinery
ROTACOD Absolute encoders
เทคนิคและวิธีการเลือก
Absolute Encoder
1) Counts Per Revolution (steps) > Single turn
ROTACOD Absolute encoders
SCHDULE COUNTS / REV. ABSOLUTE SINGLE TURN ENCODERS
ORD. CODE COUNTS REV. REVOLUTIONS TOT.COUNTS.
ASxx04
16
1
16
ASxx05
32
1
32
ASxx06
64
1
64
ASxx07
128
1
128
ASxx18
180
1
180
ASxx08
256
1
256
ASxx36
360
1
360
ASxx09
512
1
512
ASxx72
720
1
720
ASxx90
900
1
900
ASxx10
1024
1
1024
ASxx40
1440
1
1440
ASxx50
1800
1
1800
ASxx11
2048
1
2048
ASxx80
2880
1
2880
ASxx81
3600
1
3600
ASxx12
4096
1
4096
ASxx13
8192
1
8192
ASxx14
16384
1
16384
ASxx15
32768
1
32768
ASxx16
65536
1
65536
ASxx17
131072
1
131072
ROTACOD Absolute encoders
2) Revolutions > Multi Turn
SCHDULE COUNTS / REV. ABSOLUTE MULTI TURN ENCODERS
ORD. CODE COUNTS REV.
REVOLUTIONS TOT.COUNTS.
AMxx04/256
16
256
4096
AMxx05/256
32
256
8192
AMxx06/256
64
256
16384
AMxx04/16
16
16
256
AMxx07/256
128
256
32768
AMxx05/16
32
16
512
AMxx08/256
256
256
65536
AMxx06/16
64
16
1024
AMxx09/256
512
256
131072
AMxx07/16
128
16
2048
AMxx10/256
1024
256
262144
AMxx11/256
2048
256
524288
AMxx12/256
4096
256
1048576
256
2097152
AMxx08/16
256
16
4096
AMxx09/16
512
16
8192
AMxx10/16
1024
16
16384
AMxx11/16
2048
16
AMxx12/16
4096
16
AMxx13/256
8192
AMxx04/4096
16
4096
65536
32768
AMxx05/4096
32
4096
131072
65536
AMxx06/4096
64
4096
262144
128
4096
524288
256
4096
1048576
AMxx09/4096
512
4096
2097152
AMxx10/4096
1024
4096
4194304
AMxx11/4096
2048
4096
8388608
AMxx13/16
8192
16
131072
AMxx07/4096
AMxx04/64
16
64
1024
AMxx08/4096
AMxx05/64
32
64
2048
AMxx06/64
64
64
4096
AMxx07/64
128
64
8192
AMxx12/4096
4096
4096
16777216
AMxx08/64
256
64
16384
AMxx13/4096
8192
4096
33554432
AMxx09/64
512
64
32768
AMxx14/4096
16384
4096
67108864
AMxx10/64
1024
64
65536
AMxx15/4096
32768
4096
134217728
AMxx16/4096
65536
4096
268435456
AMxx17/4096
131072
4096
536870912
AMxx11/64
2048
64
131072
AMxx12/64
4096
64
262144
AMxx13/64
8192
64
524288
ROTACOD Absolute encoders
3) Output Code

BCD

Binary

Gray
ROTACOD Absolute encoders
4) Supply and Output Circuit
Supply : Standard 10-30 VDC
Output Circuit :
NPN
PNP
Push-Pull > NPN/PNP
SSI serial output RS422
Fieldbus
ROTACOD Absolute encoders
5) Shaft , Bore Diameter
Flexible Coupling
ROTACOD Absolute encoders
5) Dimension
Body Size ( Europe= mm, U.S. = Inch )
ROTACOD Absolute encoders
6) Connection
Connector (7-pin,10-pin, 12-pin ,19-pin,
25-pin,32-pin,41-pin.)
Cable (1,3,5,10 meter etc.)
7-pin
12-pin
10-pin
25-pin
19-pin
32-pin
ROTACOD Absolute encoders
ROTACOD Absolute encoders
ROTACOD Absolute encoders
ROTACOD Absolute encoders
ASC58 AS58 AS58S
Standard singleturn encoder
• based on Ø 58 mm standard
• several customizations possible
• up to 16 bits (65536 positions)
• parallel or SSI interface
• Gray or binary code
• parity bit, electronic zero setting
• complementary (sense of rotation) is standard for
all models
ROTACOD Absolute encoders
ASC58 AS58 AS58S
Standard singleturn encoder
• materials handling, storage systems
• packaging and food industry
• metallurgy plants, marine industry
• folding machines, presses
• compatible to almost all competitors
• Replacement of old Lika encoders by adapting
flanges
ROTACOD Absolute encoders
AMC58 AM58 AM58S
Standard multiturn encoder
• up to 16 + 14 bits
• parallel or SSI interface
• Gray or binary code
• parity bit, electronic zero setting
ROTACOD Absolute encoders
AMC58 AM58 AM58S
Standard multiturn encoder
• long-travel measuring
• handling machinery, food, etc.
• telescopic cranes, telescopes
• high lift storage systems, conveyors
• metallurgy plants
• preferential encoder
ROTACOD Absolute encoders
AM58P - programmable multiturn encoder
• max. 8192 inf./rev. x 4096 rev.
• programmable with Lika SW or terminal SW
• programmable code (gray, binary, BCD), parity
bit (even, odd), resolution, complementary, zero
setting, offset, latch, tri-state
• teach-in function (resolution self-learning)
ROTACOD Absolute encoders
AM58P - programmable multiturn encoder
• fits all applications
• replacement for any absolute encoder
• preferential encoder for distributors
• stock version AM5812/4096PS-6
ROTACOD Absolute encoders
Absolute encoders with Fieldbus interface
• Fieldbus interfaces as per the manufacturer specifications
• up to 16 bits (singleturn) and 16 + 14 (multiturn)
• all parameters programmable, device address set by dipswitches
• CC-xx (connection caps) must be ordered separately
ROTACOD Absolute encoders
Absolute encoders with Fieldbus interface
• factory automation
• all automated machines
• SW and manual on Lika’s website
• preferential types available on stock (Profibus)
ROTACOD Absolute encoders
AS58 ISI - AM58 ISI
absolute encoder with incremental output
• incremental counting AB0, /AB0
• at power ON, it sends out an absolute position
information
• resolutions: 720-1024–2048 (S)
1024 PPRx4096 rev. (M)
2048 PPRx4096 rev. (M)
ROTACOD Absolute encoders
AS58 ISI - AM58 ISI
absolute encoder with incremental output
• an incremental axis becomes absolute by a simple
hardware change
• packaging, retrofit of old machines
• PLCs with incremental encoder inputs
• fits to any incremental counter
• only competitor is T+R Electronic
ROTACOD Absolute encoders
ASR58 with integrated cam programmer
• integrated cam programmer
• 0,1° resolution (3600 CPR)
• 120 cams per program
• 16 programs can be stored
• pulse output for speed measurement
• fault signal indicating output status
• analogue output
ROTACOD Absolute encoders
ASR58 with integrated cam programmer
• packaging and food machines
• tobacco machines
• rotary index tables
• tool changer
ROTACOD Absolute encoders
AS58 A - AM58 A
encoder with analogue output
• 0-5V, 0-10V, 4-20 mA outputs
• resolutions: 4096
4096 x 16
512 x 64
256 x 256
• Shaft: Ø 6, 8, 9.52, 10, 12 mm
ROTACOD Absolute encoders
AS58 A - AM58 A
encoder with analogue output
• replacement of potentiometers and gear
potentiometers
• steering gears control
ROTACOD Absolute encoders
AST6 encoder with square flange
• based on Ø 65 mm standard
• up to 16 bits (65536 positions)
• parallel or SSI
• Gray, binary, BCD
• parity bit, electronic zero setting
• IP66 on the shaft side
ROTACOD Absolute encoders
AST6 encoder with square flange
• for heavy-duty applications
• metallurgy plants
• presses
• tobacco industry
ROTACOD Absolute encoders
AMC9 - AM9 thin housing encoder
•
•
•
•
•
•
•
Body : 90 mm
reduced length (40 mm)
4096 or 8192 x 4096 total infos
SSI interface
international standard connections
AMC9 has shaft 15 mm
AM9 has shaft 10 mm
ROTACOD Absolute encoders
AMC9 - AM9 thin housing encoder
• factory automation
• short housing installations
• high resolution with through hollow shaft
ROTACOD Absolute encoders
AS5 – AM5 small housing encoder
•
•
•
•
body  47 mm X 78 or 114 mm
Up to 2048 x 16, 64, 256 info
Parallel interface
Cable output with possibility of connector at its
end
ROTACOD Absolute encoders
AS5 – AM5 small housing encoder
• industrial applications
• special applications
• antennas, telescopes
• when smaller body is required
ROTACOD Absolute encoders
XAC77 explosive-proof encoder
• conformal to ATEX directive
• 16 bits x 14 bits max resolution
• NPN, Push-Pull, SSI interface
• body  77 mm
• Hollow shaft  10, 14, 15 mm
• IP66
ROTACOD Absolute encoders
XAC77 explosive-proof encoder
• For quick or after power loss position info
recovering in hazardous areas
• direct mounting
• high temperature range
ROTAMAG Magnetic encoders
MA58 MA58S MAC58
absolute magnetic encoder
•
•
•
•
Based on the AS58, AS58S, ASC58 housing
12 bits x 16 bits max.
SSI or BISS output interface
Operating temperature
25°C÷+85°C max
• IP67
• For high shock and moisture conditions
ROTAPULS – COD ACCESSORIES
SF draw wire actuator
• linear measurements with 58 encoders
• measuring lengths 5000 and 6800 mm
• IP54
• approx. 0,1 mm accuracy
• bridge cranes, hoists
• automobile, trains, aircraft testing
• ideal for retrofit, easy mounting
• 5000 mm version on stock
LINECOD Magnetic Measuring Systems
LINECODE
Absolute Magnetic
Measurement System
LINECOD Magnetic Measuring Systems
LINECOD System Combinations
LINECOD Magnetic Measuring Systems
MTA5 absolute magnetic tape
• in plastic and steel
• absolute magnetic coding
• accuracy class ±50 μm/m
• temperature coefficient: 11±1 μm/k
• lenght available: up to 5.1 m
LINECOD Magnetic Measuring Systems
LINECOD Magnetic Measuring Systems
SMA5 absolute magnetic sensor
•
•
•
•
•
•
•
up to 5 m measuring length
integrated SSI interface
0,005 mm resolution
zero setting function
complementary function
IP67
to be used with MTA5 magnetic tape
LINECOD Magnetic Measuring Systems
SMA5 absolute magnetic sensor
• insensitive to power outages
• real absolute measurement
• linear motors
• tool machines
• measuring equipment
• compact design
POSICONTROL – Displays
MC150 display
• 96 x 72 x 71 mm
• 6 digit LED display
• power: 24Vac/dc, 115Vac, 230Vac
• counting frequency 330 kHz
• 2 digital outputs, 2 relay (O), RS232 (O)
• IP43
• for encoders and SMEx, SMK sensors
POSICONTROL  Displays
LD200: Universal programmable display
• 96 x 48 x 69 mm
• 8 digits, LED 10 mm
•
•
•
•
•
•
power supply: 18Vac, 24Vdc 20%
Max. 500 kHz counting frequency
inputs: AB0, SSI, 1Vpp, SMx sensor
RS232 interface
3 x 24V digital outputs @ 50mA
IP54 protection (when mounted)
• universal usage, ideal as stock unit
• easy set-up (intelligent menue)
• easy connection with block terminals and Dsub conn.
• very compact, with mounting clips
POSICONTROL  Displays
E_Incr
PP,LD (A, B, 0)
possible device types
M_Sens
Lika magnetic sensors
SM2, SM25, SM5
LD200
E_1Vpp
M_Incr
SIN/COS 1Vpp
PP, LD (A, B, O)
M_1Vpp
E_SSI
absolute SSI
SIN/COS 1Vpp
M_SSI
absolute SSI
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