OPT-SNAP-AITM

SNAP-AITM SNAP 2-Ch Type E, J, K Thermocouple or -150mV to +150mV Analog Input Module

The SNAP-AITM provides two channels of analog-to-digital conversion. Each channel can be configured for -150 to +150
mV DC or -75 to +75 mV DC, or for type E, J, or K thermocouple operation. Use isolated probes for thermocouple inputs.
 
Although the two channels are not isolated from each other, the module is transformer isolated and optically isolated
from other modules and devices.
 
Part of the SNAP PAC System, the module mounts on a SNAP PAC rack with a SNAP PAC brain or rack-mounted
controller. Analog, digital, and serial I/O modules can all be on the same rack. Such an I/O unit is also well suited for PC-
based control or for use as intelligent remote I/O for an Allen-Bradley RSLogix PLC system, such as ControlLogix,
MicroLogix, or CompactLogix.
 
For a similar module offering eight channels, see SNAP-AITM-8.
 
For a similar module with channel-to-channel isolation, see SNAP-AITM-i.
 

Input Range	From -150 mV to +150 mV From -75 mV to +75 mV
Over-Range Limits	From -165 to +165 mV
Resolution	6 microvolts from -150 to +150 mV 3 microvolts from -75 to +75 mV
Cold Junction Temperature Compensation	Automatic when used with SNAP I/O processors
Input Filtering	-3 dB @ 7 Hz
Input Response Time (% of span/delta V/delta time)	63.2%/95 mV/23 mS
Data Freshness (Max)	167 ms (+/-150 mV) 334 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	5 microvolts / °C
DRIFT: Offset Temperature Coefficient	2 microvolts / °C
Thermocouple Accuracy [°C]   From factory   After user gain and offset commands	±2.0 (E, J, and K) ±0.8
Isolation	1500 V
Power Requirements	5 VDC (±0.15 ) @ 170 mA
Input Resistance	100 Megohms (each channel)
Ambient Temperature:   Operating   Storage	0 °C to 70 °C -25 °C to 85 °C
Torque, hold-down screws	4 in-lb (0.45 N-m)
Torque, connector screws	3 in-lb (0.34 N-m)
Agency Approvals	FM, CE, RoHS, DFARS
Warranty	Lifetime

Rev: 04/13