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3.8.11 Encoder #1 Inputs (A1+, A1-, B1+, B1-, Z1+, Z1-,)
Single-ended mode compliance
Input voltage, single-ended mode A/A+,
B/B+
Input voltage, single-ended mode Z/Z+
Input current, single-ended mode A/A+,
B/B+, Z/Z+
Differential mode compliance
Input voltage, differential mode
Input impedance, differential
Input frequency
Minimum pulse width
ESD protection
3.8.12 Encoder #2 Inputs (A2, B2, Z2)
Single ended mode compliance
Input voltage, single-ended mode A2, B2,
Z2
Input current, single-ended mode A2, B2,
Z2
3.8.13 Linear Hall Inputs (LH1, LH2, LH3)
Input voltage
Input current
Interpolation Resolution
Frequency
ESD protection
3.8.14 Sin-Cos Encoder Inputs (Sin+, Sin-, Cos+, Cos-)
Input voltage, differential
Input voltage, any pin to GND
Input impedance
Resolution with interpolation
Frequency
ESD protection
Encoder #1 differential input pins do not have internal 120Ω termination resistors connected across
1
For full RS-422 compliance, 120Ω termination resistors must be connected across the differential pairs, as close as possible to the
2
drive input pins. See Figure 3.18. Differential incremental encoder #1 connection
3
For many applications, a 120Ω termination resistor should be connected across SIN+ to SIN-, and across COS+ to COS-. Please
consult the feedback device datasheet for confirmation.
Technosoft 2019
Leave negative inputs disconnected
Logic "LOW"
Logic "HIGH"
Floating voltage (not connected)
Logic "LOW"
Logic "HIGH"
Floating voltage (not connected)
Logic "LOW"; Pull to GND
Logic "HIGH"; Internal 2.2KΩ pull-up to +5
For full RS422 compliance, see
Hysteresis
Common-mode range (A+ to GND, etc.)
A1+ to A1-, B1+ to B1-
Z1+ to Z1-
Single ended mode
Differential mode
Single ended mode, Open-collector / NPN
Differential mode, or Single-ended driven by push-pull (TTL /
CMOS)
Human body model
Logic "LOW"
Logic "HIGH"
Logic "LOW"
Logic "HIGH"
Operational range
Absolute maximum values, continuous
Absolute maximum, surge (duration ≤ 1s)
Input voltage 0...+5V
Depending on software settings
Human body model
Sin+ to Sin-, Cos+ to Cos-
Operational range
Absolute maximum values, continuous
Absolute maximum, surge (duration ≤ 1s)
Differential, Sin+ to Sin-, Cos+ to Cos-
Common-mode, to GND
Software selectable, for one sine/cosine period
Sin-Cos interpolation
Quadrature, no interpolation
Human body model
47
1
2
†
3
†
iMOTIONCUBE Technical Reference
Min.
Typ.
Max.
TTL / CMOS / Open-collector
1.6
1.8
4.5
1.2
1.4
4.7
2.5
3
0
0
0
TIA/EIA-422-A
±0.06
±0.1
±0.2
-7
+7
4.2
4.7
6.1
7.2
0
5
0
10
1
50
±2
Min.
Typ.
Max.
Units
TTL / CMOS / Open-collector
0.8
2
0.1
0.1
Min.
Typ.
Max.
Units
0
0.5÷4.5
4.9
-7
+7
-11
+14
-1
±0.9
+1
11
0
1
±1
Min.
Typ.
Max.
Units
1
1.25
-1
2.5
4
-7
+7
-11
+14
4.2
4.7
2.2
2
10
0
450
0
10
±2
Units
V
V
mA
V
kΩ
MHz
μs
ns
kV
V
mA
V
mA
bits
kHz
kV
V
PP
V
kΩ
kΩ
bits
kHz
MHz
kV
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