The Siemens 6ES7132-7RD21-0AB0 is a SIMATIC DP electronics module for the ET200iSP distributed I/O system, delivering 4 digital outputs at 17.4 V DC / 40 mA per channel, with an intrinsically-safe H-shutdown input that enables emergency stop in hazardous areas. Rated for Ex ib[ia] IIC T4 and I M2 Ex ib[ia] I protection, this module mounts directly on the ET200iSP backplane and occupies one slot. Diagnostics are built in: group error SF (red) LED, wire-break detection (R > 10 kohms, I < 100 µA), short-circuit protection (R < 800 ohms one output, R < 40 ohms parallel), and a diagnostic alarm.
What the ratings mean for fit
Each output sources up to 40 mA at 17.4 V DC; when you need more drive, parallel-wiring two or more outputs doubles the available current to 80 mA—but watch the short-circuit threshold drops to R < 40 ohms in that configuration. Ambient temperature range runs to 70 °C, and the unit's power loss is a low 2.8 W typical, keeping heat out of the enclosure in tight ET200iSP cabinets.
Sourcing and lifecycle
The 6ES7132-7RD21-0AB0 is classified as current production — still actively manufactured and available through standard Siemens distribution.