5
Encoding Characteristics
HEDS-9040 #T00
Encoding Characteristics over Recommended Operating Range and Recommended Mounting Tolerances
unless otherwise specified. Values are for the worst error over the full rotation of HEDM-614X Option TXX
codewheel.
Parameter
Symbol
∆C
Min.
Typ.[1]
Max.
7.5
50
Units
Cycle Error
3
7
°e
Pulse Width Error
Logic State Width Error
Phase Error
∆P
°e
∆S
5
50
°e
∆φ
2
15
°e
Position Error
∆Θ
PO
2
20
min. of arc
Index Pulse Width
40
10
90
450
140
1500
°e
CH. I rise after
CH. B or CH. A fall
-40°C to +100°C
-40°C to +100°C
t1
ns
CH. I fall after
t2
10
250
1500
ns
CH. A or CH. B rise
Note:
1. Module mounted on tolerance circle of ± 0.13 mm (± 0.005 in.) radius referenced from module Side A aligning recess centers. 2.7 kΩ
pull-up resistors used on all encoder module outputs.
Electrical Characteristics
Electrical Characteristics over Recommended Operating Range.
Parameter
Supply Current
Symbol
ICC
Min.
30
Typ.[1]
Max.
Units
mA
V
Notes
57
85
High Level Output Voltage
Low Level Output Voltage
Rise Time
VOH
VOL
tr
2.4
IOH = -200 µA max.
0.4
V
IOL = 3.86 mA
180[2]
49[2]
ns
CL = 25 pF
RL = 2.7 kΩ pull-up
Fall Time
tf
ns
Notes:
1. Typical values specified at VCC = 5.0 V and 25°C.
2. tr and tf 80 nsec for HEDS-9040 #T00.
HP [ HEWLETT-PACKARD ]
