OPT-SNAP-AIMA-4

SNAP-AIMA-4 SNAP 4-Ch -20mA to +20mA Analog Current Input Module

The SNAP-AIMA-4 provides four channels of -20 mA to +20 mA analog current input. The module does not supply loop
excitation current. Although the four 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.
 
NOTE: This module can be used with SNAP Ethernet-based brains and on-the-rack controllers. See SNAP-AIMA for a
two-channel module that can also be used with legacy SNAP serial brains.
 
For a similar module with 32 channels, see the SNAP-AIMA-32 (requires a SNAP PAC brain or R-series controller).
 
For a similar module that provides two isolated channels, see SNAP-AIMA-i.
 
For a module that provides two isolated channels and supplies loop excitation, see SNAP-AIMA-iSRC.
 

Input Range	-20 mA to +20 mA
Over-Range Limits	From -22 to +22 mA (+/-20 mA range)
Resolution	0.8 microamps
Input Response Time (% of span/ delta I/delta tme)	99.9% / 19.9 mA / 10 ms
Data Freshness (Max)	SNAP-AIMA: 11.5 ms SNAP-AIMA-4: 23 ms
DC Common Mode Rejection	>-120 dB
AC Common Mode Rejection	>-120 dB @ 60 Hz
Maximum Survivable Input	36 mA or 9 VDC
Maximum Operating Common Mode Voltage	250 V
Accuracy	0.05% (10 microamps)
DRIFT: Gain Temperature Coefficient	30 PPM/ °C
DRIFT: Offset Temperature Coefficient	15 PPM/ °C
Power Requirements	5 VDC (±0.15 ) @ 170 mA
Input Resistance - Single Ended	200 ohms (each channel)
Operating Temperature	0 °C to 70 °C
Storage Temperature	-25 °C to 85 °C
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

Rev: 04/13