Technosoft 2019
47
iMOTIONCUBE Technical Reference
3.8.11 Encoder #1 Inputs (A1+, A1-, B1+, B1-, Z1+, Z1-,)
Min.
Typ.
Max.
Units
Single-ended mode compliance
Leave negative inputs disconnected
TTL / CMOS / Open-collector
Input voltage, single-ended mode A/A+,
B/B+
Logic “LOW”
1.6
V
Logic “HIGH”
1.8
Floating voltage (not connected)
4.5
Input voltage, single-ended mode Z/Z+
Logic “LOW”
1.2
V
Logic “HIGH”
1.4
Floating voltage (not connected)
4.7
Input current, single-ended mode A/A+,
B/B+, Z/Z+
Logic “LOW”; Pull to GND
2.5
3
mA
Logic “HIGH”; Internal 2.2K
Ω
pull-up to +5
0
0
0
Differential mode compliance
For full RS422 compliance, see
TIA/EIA-422-A
Input voltage, differential mode
Hysteresis
±0.06
±0.1
±0.2
V
Common-mode range (A+ to GND, etc.)
-7
+7
Input impedance, differential
A1+ to A1-, B1+ to B1-
4.2
4.7
kΩ
Z1+ to Z1-
6.1
7.2
Input frequency
Single ended mode
0
5
MHz
Differential mode
0
10
Minimum pulse width
Single ended mode, Open-collector / NPN
1
μs
Differential mode, or Single-ended driven by push-pull (TTL /
CMOS)
50
ns
ESD protection
Human body model
±2
kV
3.8.12 Encoder #2 Inputs (A2, B2, Z2)
Min.
Typ.
Max.
Units
Single ended mode compliance
TTL / CMOS / Open-collector
Input voltage, single-ended mode A2, B2,
Z2
Logic “LOW”
0.8
V
Logic “HIGH”
2
Input current, single-ended mode A2, B2,
Z2
Logic “LOW”
0.1
mA
Logic “HIGH”
0.1
3.8.13 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
3.8.14 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
1
Encoder #1 differential input pins do not have internal
120Ω termination resistors connected across
2
For full RS-422 compliance,
120Ω termination resistors must be connected across the differential pairs, as close as possible to the
drive input pins. See
Figure 3.18. Differential incremental encoder #1 connection
3
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.
