Technosoft 2016
42
iPOS4808 MY-CAN-STO/-CAT-STO Technical Reference
3.9.12 Encoder #2 Inputs (A2+, A2-, B2+, B2-, Z2+, Z2-)
Min.
Typ.
Max.
Units
Differential mode compliance
TIA/EIA-422-A
Input voltage, differential mode
Hysteresis
±0.06
±0.1
±0.2
V
Differential mode
-14
+14
Common-mode range (A+ to GND, etc.)
-11
+14
Input impedance, differential
120
Ω
Differential mode
0
10
MHz
Differential mode
50
ns
ESD protection
Human body model
±1
kV
3.9.13 Linear Hall Inputs (LH1, LH2, LH3)
Min.
Typ.
Max.
Units
Input voltage
Operational range
0
0.5÷4.5
4.9
V
Absolute maximum values, continuous
-7
+7
Absolute maximum, surge (duration
≤
1s)
†
-11
+14
Input current
Input voltage 0…+5V
-1
±0.9
+1
mA
Interpolation Resolution
Depending on software settings
11
bits
Frequency
0
1
kHz
ESD protection
Human body model
±1
kV
3.9.14 Sin-Cos Encoder Inputs (Sin+, Sin-, Cos+, Cos-)
Min.
Typ.
Max.
Units
Input voltage, differential
Sin+ to Sin-, Cos+ to Cos-
1
1.25
V
PP
Input voltage, any pin to GND
Operational range
-1
2.5
4
V
Absolute maximum values, continuous
-7
+7
Absolute maximum, surge (duration
≤
1s)
†
-11
+14
Input impedance
Differential, Sin+ to Sin-, Cos+ to Cos-
4.2
4.7
kΩ
Common-mode, to GND
2.2
kΩ
Resolution with interpolation
Software selectable, for one sine/cosine period
2
10
bits
Frequency
Sin-Cos interpolation
0
450
kHz
Quadrature, no interpolation
0
10
MHz
ESD protection
Human body model
±2
kV
3.9.15 SSI encoder interface
Min.
Typ.
Max.
Units
Differential mode compliance
(CLOCK, DATA)
1
TIA/EIA-422
CLOCK Output voltage
Differential; 50Ω differential load
2.0
2.5
5.0
V
Common-mode, referenced to GND
2.3
2.5
2.7
CLOCK frequency
Software selectable
1000, 2000, 3000
kHz
DATA Input hysteresis
Differential mode
±
0.1
±
0.2
±
0.5
V
Data input impedance
Termination resistor on-board
120
Ω
DATA Input common mode range
Referenced to GND
-7
+12
V
Absolute maximum, surge (duration
≤
1s)
†
-25
+25
DATA format
Software selectable
Binary / Gray
Single-turn / Multi-turn
Counting direction
DATA resolution
Total resolution (single turn or single turn + multi turn)
31
bit
Single-turn frame
n
n-1
n-2
n-3
n-4
4
3
2
1
DT+
CK+
T
T/2
1
2
3
4
5
n-3
n-2
n-1
n
MSB
LSB
n single-turn bits
CK- and DT- signals have the same form with CK+ and DT+, but with opposite polarity.
1
Encoder #2 differential input pins have internal
120Ω
termination resistors connected across
2
For many applications, a 120
Ω
termination resistor should be connected across SIN+ to SIN-, and across COS+ to COS-. Please
consult the feedback device datasheet for confirmation.
