Specifications

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Modicon
™
Momentum
™
automation platform
Analog I/O bases
Introduction
Modicon
™
Momentum
™
analog input bases enable acquisition of various analog
values encountered in industrial applications, including:
b Standard high level ( ± 5 V, ± 10 V, 1-5 V, 4-20 mA, ± 20 mA)
b Low level ( ± 25 mV, ± 100 mV)
b
Thermocouples (B, E, J, ...)
b Temperature probes (Ni ..., Pt ...)
Analog output bases are used to control analog eld devices such as: speed drives
and proportional control valves. The current or the voltage is proportional to the
digital value dened by the user program. The outputs can be congured so that
when the program stops, the outputs either reset to zero or hold the last value
received. This feature is useful during debugging because, if the outputs are set to
“Hold”, the operation of the analog eld devices is not disturbed every time the
program stops.
Designed to cover a wide range of applications, Modicon Momentum I/O bases offer
the following functions in addition to A/D or D/A conversion:
b
Choice of input/output ranges (voltage, current, thermocouple,
temperature probes)
b Selection of number of channels used
b Cold junction compensation for thermocouple modules
b Broken wire detection (170 AAI 030 00, 170 AAI 140 00 and 170 AAI 520 40 models)
Description
170 App analog I/O base units feature the following on the front panel:
1 Internal interface connector for the communication module or processor module
2 Locking and ground contact for the communication module or processor module
3 LED status indicators (the number of indicators will depend on the number
of channels)
4 Two connectors for the removable terminal blocks
5 Grounding screw
6 Slot for the power strip
7 Two screw holes for panel mounting
8 Protective cover
Connectors to be ordered separately:
b removable screw or spring terminal blocks 170 XTS 00p 00
b 1 to 3-row screw or spring bus bar 170 XTS 00p 01
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Introduction,
description