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Schneider Electric 170AAI14000 Modicon Momentum Analog Input Base

The Schneider Electric 170AAI14000, also cataloged as the 170AAI14000 Analog Input Base, operates as a dedicated hardware component for analog signal acquisition within the Modicon Momentum automation platform. It accepts voltage and current process signals, converts them into 16-bit signed data, and transfers measurement values to the controller through the Momentum I/O architecture.

Hardware Specifications

Parameter	Specification
Model	170AAI14000
Brand	Schneider Electric
Series	Modicon Momentum
Product Type	Analog Input Base
Analog Input Channels	16, single-ended
Input Ranges	4-20 mA, +/- 5 V, +/- 10 V
Resolution	12-bit conversion, 16-bit signed data format
Input Impedance	> 2200 kOhm (voltage inputs), < 0.25 Ohm (4-20 mA)
Input Filter	Low-pass, 10 kHz
Full Scale	16 mA (4-20 mA), 5 V (+/- 5 V), 10 V (+/- 10 V)
Update Time	25 ms
Absolute Accuracy	+/- 0.15 % FS at 25 degC (voltage), +/- 0.25 % FS at 25 degC (current)
Temperature Drift	30 ppm FS/degC (voltage), 60 ppm FS/degC (current)
Channel-to-Ground Isolation	1780 VAC for 1 minute
Supply-to-Ground Isolation	500 V for 1 minute
Permissible Common Mode Voltage	250 VAC, 47-63 Hz; 100 VDC
External Power Requirement	+/- 30 VDC
Power Consumption	305 mA at 24 VDC
Maximum Power Dissipation	5.55 W
Reverse Polarity Protection	Internal
Internal Protection	2 A slow-blow
Associated Fuse	500 mA fast-blow
Local Indicators	16 channel status LEDs
Electrical Connection	Two removable terminal block connectors
Dimensions	141.5 x 125 x 47.5 mm
Weight	0.215 kg
Operating Temp	0 to 60 degC
Storage Temp	-40 to 85 degC
Relative Humidity	95 % non-condensing
Operating Altitude	Up to 5000 m
Certifications	CE, UL, CSA, FM Class 1 Division 2
Protective Treatment	TC
Origin	Schneider Electric manufacturing location not specified in the supplied data

PLC Backplane Communication and I/O Density

The 170AAI14000 is designed for the Modicon Momentum distributed I/O platform, where analog measurement data is transferred through the Momentum backplane interface to the controller. Sixteen single-ended analog input channels provide high I/O density for distributed acquisition while maintaining independent channel status indication through front-panel LEDs. The module delivers a fixed 25 ms update period for cyclic analog data acquisition.

Frequently Asked Questions

Q: Does the module support both voltage and current analog inputs?

A: Yes. The module supports +/- 5 V, +/- 10 V, and 4-20 mA analog input ranges. Input type selection is determined during system configuration.

Q: Is channel isolation provided?

A: The module provides 1780 VAC isolation between input channels and ground for 1 minute, and 500 V isolation between the supply and ground. The supplied specification does not indicate channel-to-channel isolation.

Q: Can field wiring be connected through removable terminals?

A: Yes. The module uses two removable terminal block connectors to simplify field wiring and module replacement.

Field Installation Guidelines

• Verify that the configured input range matches the connected field instrument before applying power.
• Route analog signal cables separately from motor power and high-current conductors to minimize electrical interference.
• Connect cable shields according to the plant grounding standard and avoid multiple shield grounding points unless specified by the control system design.
• Confirm that the external supply meets the specified +/- 30 VDC requirement before energizing the module.
• Install the specified external 500 mA fast-blow fuse and observe the internal protection limits during maintenance.
• Maintain ambient operating conditions within the specified temperature and humidity limits.

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