Multi-turn Absolute
Electro-optical Encoders
(Model : JMAE)
· Compact and robust for mechanical engineering applications
· Gray or Natural Binary output code
· Resolution up to 8192 positions / 360°<)
· Measuring range 4096 turns
· Total capacity up to 225 (25 Bits)
· Option : Data Control Bit (DCB)
· With hardware multi-turn gearing
· Axial and radial shaft load permissible up to 250 N
· IP 65 or IP 66 protection grade
· Option : Extended working temperature range from
- 40 C to + 85° C
· Possibility of customer specific modifications
SPECIFICATION
¤ Sensor system : GaAlAs diodes, photo-transistor array
¤ Resolution : 4096 positions / 360°<)
¤ Data Control-Bit (DCB) : Optional at ≤ 4096 positions
¤ Disc coding : Gray code
¤ Measuring position ≤ ± 2'38" at
deviation : 4096 positions / 360° <)
≤ ± 1'59" at 8192 positions / 360° <)
¤ Measuring range : 4096 turns
¤ Parallel output circuits : A = Open Collector Darlington
C = Open Emitter Darlington
D = Push-pull
¤ Output frequency 1) : 10 kHz max.
¤ Latch 1) : via signal input E1
¤ Enable circuit 1) : on / off, via signal input E1
¤ Serial output circuit : E = SSI Differential to RS 422 / 485
¤ Output Code : Gray or Gray-Excess for non-binary
outputs
¤ Code sense : CW or CCW, via signal input E2
¤ Supply voltage range : + 11 V to + 30 VDC
¤ Supply current
· parallel : 60 mA typ. / 80 mA max.
· serial SSI : 70 mA typ. / 90 mA max.
¤ Operating speed : 3000 rpm max. (continuous)
4000 rpm max. (short period)
¤ Angular acceleration : 105 rad/s2 max.
¤ Inertial mass of rotor : 45 gcm2 ¤ Operating torque : ≤ 5 Ncm ( 8 Ncm - CRE 66 )
(at 1000 rpm)
¤ Wind-up torque : ≤ 1 Ncm ( 4 Ncm - CRE 66 ) ¤ Permissible axial and radial shaft load: 250 N max.
¤ Bearing life expectancy 2) : 109 turns
¤ Mass : <3 ~5kg
Construction
Flange and case in stainless steel or MC Nylon
- shaft in stainless steel 10 mm ball-bearings with Nilos ring seal or
radial packing ring
seal - code disc in glas or in deformation resistant plastic - GaAlAs
diodes-photo-transistor array with comparator and trigger circuits -
gate array - SMD technology.
The Multiturn section features a unique combination of coded gear
wheels for non-ambiguous position sensing.
Environmental Data
¤ Operating temperature range : - 20° C to + 60° C
- optional (with connector) : - 40° C to + 85° C ¤ Storage temperature range : - 25° C to + 70° C
¤ Permissible rel. humidity : 85% without condensation
¤ Resistance to shock : 200 m/s2; 11 ms
( DIN IEC 68 )
¤ Resistance to vibration : 5 Hz ... 1000 Hz ; 100 m/s2
( DIN IEC 68 )
Protection class (DIN 40050)
¤ JMAE-MB : IP 65 ¤ JMAE-SF and MF : IP 66
1) For parallel interfaces only
2) Longer life expectancy can be achieved with lower loads.
Output circuits
Input circuits
Timing - Diagrams
Block Diagram / Serial Interface - SSI
Interface Profile SSI - 25 Bit
Monoflop time : 20 μs
The parallel, absolute angle information derived by the encoder is converted into serial information by an internal
parallel-serial converter and then transmitted to a receiving electronic circuit in synchronism with a clock.
Important advantages are : Low number of data lines and high reliability.
Dimension and cutout
JMAE-SF, MF Type
Fastening thread per 3 * M6(120 °), and 3* M6(120 °) 10mm deep
Ordering Information
JMAE : Base Code (Multi-turn Absolute Electro-optical Encoders)
S F : Stainless Steel, Front Mount Type
M F : MC Nylon, Front Mount Type
M B : MC Nylon, Bottom Mount Type
G : Gray (Output Code)
N : Natural Binary (Output Code)
A : Open Collector Darlington (Parallel)
E : RS 422 / 485 SSI
Example Ordering Code :
JMAE – SF – G – E : JMAE Base Code (Multi-turn Absolute Electro-optical Encoders)
SF : Stainless Steel, Front Mount Type
G : Gray (Output Code)
E : RS 422 / 485 SSI