Deutsch 
English | SNAP-AIPM Single-Phase Power Monitoring Module |
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simultaneously measures single-phase volts AC RMS and amps AC RMS and calculates true power and volt-amps.
Leading or lagging power factor can then be calculated from true power and volt-amp values.
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.
When these modules are used as part of a SNAP PAC System running a PAC Control strategy, the strategy logic can
automatically perform the calculations and respond to problems.
Compatibility: SNAP-AIPM modules work with SNAP PAC brains and R-series controllers. They also work with legacy
SNAP Ethernet-based brains.
NOTE: If you need to monitor 3-phase power, see the SNAP-AIPM-3 and the SNAP-AIPM-3V.
| SNAP-AIPM | |
| Voltage Inputs (each voltage channel) | |
| Recommended Input Range Scaled Input Range | 85 to 250 VAC RMS 0 to 250 VAC RMS |
| Input Over Range | To 275 volts |
| Resolution | 10 mV |
| Accuracy (47 to 63 Hz) | (When used within recommended range) ± 0.2 V plus ± 0.2% reading (at full scale = ± 0.7 V or 0.28%) |
| RMS Integration Time/ Data Freshness | 1000 ms (synchronous with current measurement) |
| Input Filtering | Time constant = 70 µs (analog front end) (–0.2 dB at 660 Hz; –3 dB at 1.89 kHz) nominal |
| Input Resistance – Single Ended | 1 Megohm NOTE: Because both channels share the same reference terminal, polarity must be observed when connecting the current channel. |
| Maximum Input | 300 V non-operating |
| Current Inputs (each current channel) | |
| Input Range | 0 to 10 AC amps RMS |
| Input Over Range | To 11 amps (Reading is not reliable over 11 A.) |
| Input Overload | 15 A continuous, non-operating |
| Resolution | 400 µA |
| Accuracy (47 to 63 Hz) | ± 8 mA plus ± 0.2% reading (at full scale = ± 28 mA or 0.28%) |
| RMS Integration Time/ Data Freshness | 1000 ms (synchronous with voltage measurement) |
| Input Filtering | Time constant = 105 µs (analog front end) (–0.2 dB at 660 Hz; –3 dB at 1.89 kHz) nominal |
| Input Resistance – Single Ended | 0.005 Ohm NOTE: Because both channels share the same reference terminal, polarity must be observed when connecting the voltage channel. |
| Maximum Input | 15 A continuous, non-operating |
| Calculated Channels | |
| True Power and Volt-Amps Range | True power: 2500.0 Watts. Volt-amps: 2500.0 volt-amps (= 25,000 counts) (inputs = 250 volts and 10 amps) |
| Over Range | 2750 Watts true power or 2750 Volt-amps (= 27,500 counts) |
| Accuracy: | |
| True Power Volt-Amps | ± 0.6% reading (at full scale = ± 15 Watts) ± 0.6% reading (at full scale = ± 15 VA) |
| Resolution | 100 mW with default scaling |
| AC Common Mode Rejection | > –120 dB at 60 Hz |
| Maximum Operating Common Mode Voltage | 250 VAC |
| Power Requirements | 5.0 VDC ± 0.15 VDC at 100 mA |
| Ambient Temperature: | |
| Operating Storage | 0 to 70 °C -25 to 85 °C |
| Agency Approvals | CE, RoHS, DFARS |
| Warranty | Lifetime |
| Calculated Outputs | |
| True Power | 0–2500 W (from synchronous measurement of volts and amps) |
| Volt Amps | 0–2500 VA (VRMS x ARMS) |