User guide

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The Momentum analog input bases enable acquisition of various analog values
encountered in industrial applications, including:
b Standard high level (1-5 V, 4-20 mA,
+ 5V, + 10 V, + 20 mA).
b Low level (
+ 25 mV, + 100 mV).
b Thermocouples (B, E, J, ...).
b Temperature probes (Ni ..., Pt ...).
The analog output bases are used to control analog field devices such as various
speed drives, proportional control valves, etc. The current or the voltage is
proportional to the digital value defined by the user program. The outputs can be
configured so that when the program stops the outputs either reset to zero or hold
the last value received. This feature is useful during debugging since, if the outputs
are set to "Hold", the operation of the analog field devices is not disturbed every time
the program stops.
In order to cover a wide range of applications, 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, 170 AAI 520 40).
170 App analog I/O base units comprise on the front panel:
1 Internal interface connector for the communication module or processor module.
2 A locking and earth 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 An earthing screw.
6 A slot for the power strip
7 Two screw holes for panel mounting.
8 A protective cover.
Connectors to be ordered separately :
b
removable screw or spring terminal blocks 170 XTS 00 p 00
.
b 1 to 3-row screw or spring bus bar 170 XTS 00
p
01.
Presentation
Description
Momentum automation platform 0
Analog I/O Bases
Presentation,
description
Characteristics :
pages 48238/3 to 48238/7
References :
pages 48238/8 and 48238/9
Dimensions :
page 48238/9
Connections :
pages 48238/10 and 48238/11
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