Technosoft 2021
33
iPOS4803-SY Multi Axis System, EtherCAT Technical Reference
3.14.12 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”
TBD
V
Logic “HIGH”
TBD
Floating voltage (not connected)
TBD
Input voltage, single-ended mode Z/Z+
Logic “LOW”
TBD
V
Logic “HIGH”
TBD
Floating voltage (not connected)
TBD
Input current, single-ended mode A/A+,
B/B+, Z/Z+
Logic “LOW”; Pull to GND
TBD
mA
Logic “HIGH”; Internal 2.2K
Ω
pull-up to +5
TBD
For full RS422 compliance, see
TIA/EIA-422-A
Input voltage, differential mode
Hysteresis
TBD
V
Common-mode range (A+ to GND, etc.)
TBD
Input impedance, differential
A1+ to A1-, B1+ to B1-
TBD
kΩ
Z1+ to Z1-
TBD
Input frequency
Single-ended mode, Open-collector / NPN
TBD
MHz
Differential mode, or Single-ended driven by push-pull (TTL /
CMOS)
TBD
MHz
Minimum pulse width
Single-ended mode, Open-collector / NPN
TBD
µs
Differential mode, or Single-ended driven by push-pull (TTL /
CMOS)
TBD
ns
Input voltage, any pin to GND
Absolute maximum values, continuous
TBD
V
Absolute maximum, surge (duration
≤
1s)
†
TBD
ESD protection
Human body model
TBD
kV
3.14.13 Encoder #2 Inputs (A2+, A2-, B2+, B2-)
Min.
Typ.
Max.
Units
Differential mode compliance
TIA/EIA-422-A
Input voltage, differential mode
Hysteresis
TBD
V
Differential mode
TBD
Common-mode range (A+ to GND, etc.)
TBD
Input impedance, differential
TBD
Ω
Differential mode
TBD
MHz
Differential mode
TBD
ns
ESD protection
Human body model
TBD
kV
3.14.14 Analog Input (AnalogIN)
Min.
Typ.
Max. Units
Input voltage
Operational range
TBD
V
Absolute maximum values, continuous
TBD
Absolute maximum, surge (duration
≤
1s)
†
TBD
Input impedance
To GND
TBD
kΩ
Resolution
TBD
bits
Integral linearity
TBD
bits
Offset error
TBD
bits
Gain error
TBD
% FS
Bandwidth (-3dB)
Software selectable
TBD
kHz
ESD protection
Human body model
TBD
kV
1
For full RS-422 compliance,
120Ω
termination resistors must be connected across the differential pairs.
2
“FS” stands for “Full Scale”