Rockwell Automation 1398-DDM-xxx ULTRA 100 Series Drives Installation Manual - Manual (Page 42)

Publication 1398-5.2 – PDF 1997
3-4 Selecting Other System Components
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Host computers
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Programmable Logic Controllers
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Motion controllers
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TouchPad.
The serial communication interface for the ULTRA 100 Series
supports:
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RS-232 and the four wire RS-485 communications standards
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NRZ (non-return to zero) asynchronous serial format
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Baud rates: 1200, 2400, 4800, 9600 and 19200
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Parity generation and checking: Even, Odd or None.
Connection of communication cables between the drive and user-
supplied equipment is described in the following sections:
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One ULTRA 100 Series drive - “Single Axis RS-232 Set Up” on
page 6-34
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Multiple ULTRA 100 Series drives - “Multiple Axes Four-wire
RS-485 Communications” on page 6-35.
Analog Command Sources
In the analog mode of operation, the ULTRA 100 Series drive requires
a variable ±10 Volt DC external analog signal capable of driving the
servo regulator’s command input at an input impedance of
13.3 kOhms. Choose a source such as a PLC (programmable logic
controller), the DAC (digital-to-analog converter) of a computer, or a
motion controller that meets this requirement.
Differential or single-ended line drivers may supply the signals for the
auxiliary encoder inputs, step and direction inputs, and step up/down
inputs. The differential signal must be capable of supplying at least 5
mA with 2.0 Volts across the + and - inputs. A differential signal
source provides the best noise margin of all the interface circuit
options. Single-ended signals from TTL drivers must be capable of
sourcing or sinking 5 mA.
In preset mode, the controlling device should be able to source 10 mA
into the digital inputs.
I/O Interface Analog Input
One analog input channel is accessible to the user. The analog input
limits the peak current available from the drive.
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I LIMIT (current limit)
The analog signal must be within 0-10 Volt range and single-ended.