| SIMATIC S7-200, ANALOG I/O EM 235, FOR S7-22X CPU ONLY, 4 AI, DC +/-10V; 1AQ, DC +/-10V 12 BIT CONVERTER |
| Input current |
| from backplane bus 5 V DC, max. | 30 mA |
| from sensor current supply or external current supply (24 V DC), max. | 60 mA |
| Power losses |
| Power loss, typ. | 2 W |
| Analog inputs |
| Number of analog inputs | 4; Difference |
| permissible input voltage for voltage input (destruction limit), max. | 30 V |
| permissible input current for current input (destruction limit), max. | 32 mA |
| Input ranges |
| Voltage | Yes |
| Current | Yes |
| Input ranges (rated values), voltages |
| 0 to +50 mV | Yes |
| 0 to +100 mV | Yes |
| 0 to +500 mV | Yes |
| 0 to +1 V | Yes |
| 0 to +5 V | Yes |
| 0 to +10 V | Yes |
| -1 V to +1 V | Yes |
| -10 V to +10 V | Yes |
| -100 mV to +100 mV | Yes |
| -2.5 V to +2.5 V | Yes |
| -25 mV to +25 mV | Yes |
| -250 mV to +250 mV | Yes |
| -5 V to +5 V | Yes |
| -50 mV to +50 mV | Yes |
| -500 mV to +500 mV | Yes |
| Input ranges (rated values), currents |
| 0 to 20 mA | Yes |
| Temperature compensation |
| Parameterizable | No |
| Analog outputs |
| Number of analog outputs | 1 |
| Output ranges, voltage |
| -10 to +10 V | Yes |
| Output ranges, current |
| 0 to 20 mA | Yes |
| Load impedance (in rated range of output) |
| with voltage outputs, min. | 5 kΩ |
| with current outputs, max. | 0.5 kΩ |
| Analog value creation |
| Integrations and conversion time/ resolution per channel |
| Resolution with overrange (bit including sign), max. | 12 bit; 11 bits for current output |
| Basic conversion time, ms | < 0.25 ms |
| Interference voltage suppression for interference frequency f1 in Hz | 40 dB, DC to 60 Hz |
| Settling time |
| for voltage output | 100 µs |
| for current output | 2 ms |
| Displayable conversion value range |
| bipolar signals | -32000 to +32000 |
| unipolar signals | 0 to 32000 |
| Errors/accuracies |
| Operational limit in overall temperature range |
| Voltage, relative to output area | +/- 2 % |
| Current, relative to output area | +/- 2 % |
| Basic error limit (operational limit at 25 °C) |
| Voltage, relative to output area | +/- 0,5 % |
| Current, relative to output area | +/- 0,5 % |
| Interference voltage suppression for f = n x (fl +/- 1%), fl = interference frequency |
| common mode voltage, max. | 12 V |
| Interrupts/diagnostics/status information |
| Diagnostics indication LED |
| External fault EXTF (red) | Yes |
| Galvanic isolation |
| Galvanic isolation analog inputs |
| Galvanic isolation analog inputs | No |
| Galvanic isolation analog outputs |
| Galvanic isolation analog outputs | No |
| Connection method |
| Plug-in I/O terminals | No |
| Dimensions |
| Width | 71.2 mm |
| Height | 80 mm |
| Depth | 62 mm |
| Weight |
| Weight, approx. | 186 g |
| Status | Aug 25, 2011 |
