Opto 22
43044 Business Park Drive, Temecula, CA 92590 USA
Local & outside the USA:(951) 695-3000
Toll-Free within the USA:(800) 321-6786
Fax: (951) 695-3095
Email: sales@opto22.com
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The SNAP-AIARMS-i module provides two isolated channels with an input range of 0 to 10 amps RMS AC/DC. An ideal input is the 5-amp secondary of a standard current transformer used to monitor AC line current. The module may also be used to monitor AC current to greater than a 100-amp range, using a current transformer of suitable ratio.
The two channels are isolated from each other; they do not share any field connection. The SNAP-AIARMS-i module is an excellent choice for differential current measurements.
If you need Factory Mutual approval, choose the SNAP-AIARMS-i-FM instead.
If you do not need channel-to-channel isolation, see SNAP-AIARMS.
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 Logix PLC system, such as ControlLogix, MicroLogix, or CompactLogix.
Build your system in the SNAP I/O Configurator.
Input Range
|
0 to 10 amp RMS AC/DC
|
Input Over Range
|
To 11 amps
|
Input Resistance
|
0.005 ohms
|
Maximum Input
|
11 amps AC/DC
|
Accuracy (AC)
|
±8 mA and ±0.2%
reading
|
Resolution
|
400 µA
|
DC Reversal
|
±16 mA (0.16%)
|
Input Response Time
(Step Change)
|
63.2% (6.32 A) in 50
ms
99% (9.92 A) in 75 ms
|
Data Freshness (Max)
|
0.025 ms
|
DC Common Mode Rejection
|
>-120 dB
|
AC Common Mode Rejection
|
>-120 dB at 60 Hz
|
Maximum Operating
Voltage Between Channels
Common Mode Voltage
|
250 V
250 V
|
Isolation: Optical
|
4000 V
|
Isolation: Transformer
|
1500 V
|
Isolation: Channel to
Channel
|
250 V continuous
(1500 V transient)
|
Power Requirements
|
5 VDC (±0.15 V)
at 200 mA
|
Ambient Temperature:
Operating
Storage
|
-20 °C to 70 °C
-40 °C to 85 °C
|
Humidity
|
5-95%, non-condensing
|
Torque, hold-down screws
|
4 in-lb (0.45 N-m)
|
Torque, connector screws
|
5.26 in-lb (0.6 N-m)
|
Wire size range
|
22 to 14 AWG
|
Agency Approvals
|
CE, RoHS, DFARS
FM (SNAP-AIARMS-FM only)
|
Warranty
|
Lifetime
|