| Article number | 6ES7138-4DB03-0AB0 | 
|  | ET200S, El-Mod., 1SSI 25Bit/1MHz | 
| Supply voltage |  | 
| Load voltage L+ |  | 
| ● Rated value (DC) | 24 V | 
| ● permissible range, lower limit (DC) | 20.4 V | 
| ● permissible range, upper limit (DC) | 28.8 V | 
| ● Reverse polarity protection | Yes | 
| Input current |  | 
| from load voltage L+ (without load), max. | 40 mA | 
| from backplane bus 3.3 V DC, max. | 10 mA | 
| Encoder supply |  | 
| 24 V encoder supply |  | 
| ● 24 V | Yes | 
| ● Short-circuit protection | Yes | 
| ● Output current, max. | 500 mA | 
| Absolute encoder (SSI) encoder supply |  | 
| ● Absolute encoder (SSI) | Yes | 
| ● Type of output voltage | L+ (-0.8 V) | 
| ● Short-circuit protection | Yes | 
| ● Output current, max. | 500 mA | 
| Power loss |  | 
| Power loss, typ. | 1 W | 
| Hardware configuration |  | 
| Module exchange |  | 
| ● Module exchange during operation of the IM-DP | Yes | 
| ● Module exchange under process voltage | Yes | 
| Digital inputs |  | 
| Number of digital inputs | 1 | 
| Input voltage |  | 
| ● for signal “0” | -30 to +5 V | 
| ● for signal “1” | +11 to +30V | 
| Input current |  | 
| ● for signal “0”, max. (permissible quiescent current) | 2 mA | 
| ● for signal “1”, typ. | 9 mA | 
| Input delay (for rated value of input voltage) |  | 
| for standard inputs |  | 
| — at “0” to “1”, max. | 300 µs | 
| — at “1” to “0”, max. | 300 µs | 
| Cable length |  | 
| ● shielded, max. | 50 m | 
| Encoder |  | 
| Number of connectable encoders, max. | 1 | 
| Connectable encoders |  | 
| ● Absolute encoder (SSI) | Yes | 
| ● 2-wire sensor | Yes; Type 2 | 
| Encoder signals, absolute encoder (SSI) |  | 
| ● Input signal | to RS-422 | 
| ● Telegram length, parameterizable | 13, 14, 16, 21, 24 & 25 bit | 
| ● Binary code | Yes | 
| ● Gray code | Yes | 
| ● Cable length, shielded, max. | 320 m; At 125 kHz | 
| ● Monoflop time | 16/32/48/64 µs | 
| Interrupts/diagnostics/status information |  | 
| Diagnostics indication LED |  | 
| ● Group error SF (red) | Yes | 
| ● Status indicator digital input (green) | Yes | 
| ● Status indicator forward counting (green) | Yes | 
| ● Status indicator backward counting (green) | Yes | 
| Potential separation |  | 
| Potential separation digital inputs |  | 
| ● Potential separation digital inputs | No; same potential with L+ and SSI | 
| Potential separation counter |  | 
| ● between the channels and backplane bus | Yes | 
| ● Between the channels and load voltage L+ | No | 
| Dimensions |  | 
| Width | 15 mm | 
| Height | 81 mm | 
| Depth | 52 mm | 
| Weights |  | 
| Weight, approx. | 40 g |