5
Recommended Operating Conditions
Parameter
Temperature HEDS Series
Temperature HEDM Series
Supply Voltage
Symbol Min. Typ.
Max.
100
70
Units
°C
Notes
TA
TA
VCC
CL
f
-40
-40
4.5
°C
non-condensing atmosphere
Ripple < 100 mVp-p
2.7 kΩ pull-up
5.0
5.5
Volts
pF
Load Capacitance
100
100
Count Frequency
kHz
Velocity (rpm) x N/60
Shaft Perpendicularity
Plus Axial Play (HEDS Series)
± 0.25
(± 0.010)
mm
(in.)
6.9 mm (0.27 in.) from
mounting surface
Shaft Eccentricity Plus
Radial Play (HEDS Series)
0.04
(0.0015)
mm (in.)
TIR
6.9 mm (0.27 in.) from
mounting surface
Shaft Perpendicularity
Plus Axial Play (HEDM Series)
± 0.175
(± 0.007)
mm
(in.)
6.9 mm (0.27 in.) from
mounting surface
Shaft Eccentricity Plus
Radial Play(HEDM Series)
0.04
(0.0015)
mm (in.)
TIR
6.9 mm (0.27 in.) from
mounting surface
Note: The module performance is guaranteed to 100 kHz but can operate at higher frequencies. 2.7 kΩ pull-up resistors
required for HEDS-5540 and 5640.
Encoding Characteristics
Encoding Characteristics over Recommended Operating Range and Recommended Mounting Tolerances
unless otherwise specified. Values are for the worst error over the full rotation.
Part No.
Description
Pulse Width Error
Logic State Width Error
Phase Error
Position Error
Cycle Error
Sym. Min. Typ.* Max.
Units
HEDS-5500
HEDS-5600
(Two Channel)
∆P
∆S
∆φ
∆Θ
∆C
7
5
2
10
3
45
45
20
40
5.5
°e
°e
°e
min. of arc
°e
HEDM-5500
HEDM-5600
(Two Channel)
Pulse Width Error
Logic State Width Error
Phase Error
Position Error
Cycle Error
∆P
∆S
∆φ
∆Θ
∆C
10
10
2
10
3
45
45
15
40
7.5
°e
°e
°e
min. of arc
°e
HEDS-5540
HEDS-5640
(Three
Pulse Width Error
Logic State Width Error
Phase Error
Position Error
Cycle Error
∆P
∆S
∆φ
∆Θ
∆C
PO
5
5
2
10
3
90
35
35
15
40
5.5
125
°e
°e
°e
Channel)
min. of arc
°e
°e
Index Pulse Width
55
CH. I rise after
CH. A or CH. B fall
-40°C to +100°C
-40°C to +100°C
t2
-300
100
250
ns
CH. I fall after
t2
70
150
1000
ns
CH. B or CH. A rise
Note: See Mechanical Characteristics for mounting tolerances.
*Typical values specified at VCC = 5.0 V and 25°C.
HP [ HEWLETT-PACKARD ]
