OPT-SNAP-AIMA-iSRC

SNAP-AIMA-iSRC SNAP 2-Ch Isolated -20 to +20 mA Analog Current Input Module with Loop Sourcing

The SNAP-AIMA-iSRC provides two isolated channels of -20 mA to +20 mA analog current and also includes built-in loop
sourcing capability. With the connection of a single 24 V power supply, the module sources 24 V for two 4–20 mA loops.
The loops are internally connected to the individual inputs. The two channels and their loop sources are isolated from
each other.
 
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.
 
If you need Factory Mutual approval, choose the SNAP-AIMA-iSRC-FM. Other options:
If you do not need loop sourcing, see SNAP-AIMA-i.
If you do not need channel-to-channel isolation, see SNAP-AIMA.
 

Input Range	0 to +20 mA with loop sourcing -20 mA to +20 mA
Maximum Over Range	± 10% (= ± 27500 counts)
Resolution	0.8 µA
Input Response Time (% of span/delta I/delta time)	99.9 %/19.9 µA/10 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 µA)
DRIFT: Gain Temperature Coefficient	30 PPM/ °C
DRIFT: Offset Temperature Coefficient	15 PPM/ °C
Isolation: Optical	4000 V
Isolation: Transformer	1500 V
Isolation: Channel to Channel	250 V continuous (1500 V transient)
Power Requirements	5 VDC (±0.15 ) @ 200 mA
Power Requirements - Loop Power (Input)	From separate field connector: 24 VDC nominal (70 mA max @ 24 V input, both loops @ 20 mA), 30 VDC maximum
Loop Power (Output)	24 VDC (± 1.5 V) @ 20 mA Open loop: 30 V maximum Shorted loop: 24 mA nominal
Input Resistance	200 ohms (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	5.26 in-lb (0.6 N-m)
Agency Approvals	CE, RoHS, DFARS FM (SNAP-AIMA-iSRC-FM only)
Warranty	Lifetime

Rev: 04/13