SNAP Analog Input Modules

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Millivolt Input Module

Specifications

SNAP-AIMV-4

IMPORTANT: The mounting rack connector has 24 pins; the

module connector has 20 pins. The extra pins on the

mounting rack connector prevent misalignment of the

module during installation.

Description

The SNAP-AIMV-4 module provides four channels of analog to

digital conversion. See the table on page 3 for I/O processor

compatibility.

Each channel on the module can be configured for -150 mV

DC to +150 mV DC or -75 mV DC to +75 mV DC.

Note that all inputs share the same reference terminal.

Part Number

Description

SNAP-AIMV-4

Four-channel -150 to +150 mV or

-75 to +75 mV input

Input Range

From -150 mV to +150 mV

From -75 mV to +75m V

Over-Range Limits

From -165 to +165 mV

(+/-150 mV range)

From -82.5 to +82.5 mV

(+/-75 mV range)

Resolution

6 microvolts (-150 mV to +150 mV)

3 microvolts (-75 mV to +75 mV)

Input Filtering

-3 dB @ 7 Hz

Input Response Time (%

of span/delta V/delta time)

63.2%/95 mV/23 ms

Data Freshness (Max)

335 ms (+/- 150 mV)

668 ms (+/- 75 mV)

DC Common Mode

Rejection

>-120 dB

AC Common Mode

Rejection

>-120 dB @ 60 Hz

Maximum Survivable

Input

±15 volts

Maximum Operating

Common Mode Voltage

250 V

Accuracy at Full Scale

0.06% (90 microvolts) @ 150 mV

0.1% (75 microvolts) @ 75 mV

Drift: Gain Temperature

Coefficient

3 microvolts / °C

Drift: Offset Temperature

Coefficient

2 microvolts / °C

Isolation

1500 V

Power Requirements

5 VDC (±0.15 ) @ 170 mA

Input Resistance - Single

Ended

100 Megohms (each channel)

Operating Temperature

0 °C to 70 °C

Storage Temperature

-40 °C to 85 °C

Wire size

22 to 14 AWG

Torque, hold-down screws 4 in-lb (0.45 N-m)

Torque, connector screws

5.26 in-lb (0.6 N-m)

Agency Approvals

UL, FM, CE, RoHS, DFARS

Warranty

Lifetime