The new S7-200 SMART has two different types of CPU modules, i.e. standard type and compact type.
Standard type CPU is expandable with I/O expansion modules and signal boards. Compact type CPUs are non expandable with I/O expansion modules and signal boards.
| Model | EM AI04 | EM AI08 |
| Order No.: (MLFB) | 6ES7 288-3AE04-0AA0 | 6ES7 288-3AE08-0AA0 |
| Standard | ||
| Dimension W x H x D (mm) | 45 x 100 x 81 | |
| Weight | 147 g | 186 g |
| Power consumption | 1.5 W (no load) | 2.0 W (no load) |
| Current consumption (SM bus) | 80 mA | |
| Current consumption (24 V DC) | 40 mA (no load) | 70 mA (no load) |
| Analogue input | ||
| No. of Inputs | 4 | 8 |
| Type | Voltage or current (differential) : 2 can be selected as a group | |
| Range | ±10 V, ±5 V, ±2.5 V, or 0 ~ 20 mA | |
| Full scale range (data word) | -27, 648 ~ 27, 648 | |
| Overshoot / undershoot range (data word) | Voltage: 27, 649 ~ 32, 511/-27, 649 ~ -32, 512 Current: 27, 649 ~ 32, 511/-4864 ~ 0 |
|
| Overflow / underflow (data word) | Current: 32, 512 ~ 32, 767/-4, 865 ~ -32, 768 Voltage mode: 11 bits + signal bits |
|
| Resolution | Current mode: 11 bits | |
| Maximum voltage / current resistance | ±35 V/±40 mA | |
| Smoothness | None, weak, medium or strong | |
| Noise suppression | 400, 60, 50 or 10 Hz | |
| Input resistance | 9 M Ω (voltage) / 250 Ω (current) | |
| Isolation (field side and logic side) | None | |
| Precision (25°C / 0 ~ 55°C) | Voltage mode: full range ±0.1 %/±0.2 % | |
| Current mode: full range ±0.2 %/±0.3 % | ||
| Analogue to digital conversion time inhibited) | 625 µs (400 Hz | |
| Common mode rejection | 40 dB, DC to 60 Hz | |
| The working signal range | Signal plus common mode voltage must be less than +1 2 and greater than -12 V; | |
| The cable length (maximum) | 100 m, Shielded twisted pair | |
| Overflow / underflow ? | Yes | |
| 24 V DC low voltage ? | Yes | |
| Weight | N/A |
|---|---|
| Dimensions | N/A |
