Siemens 6ES7432-1HF00-0AB0 SIMATIC S7-400 SM 432 8AO 13-Bit U/I Analog Output Module

The Siemens 6ES7432-1HF00-0AB0 is a SIMATIC S7-400 SM 432 analog output module with 8 isolated channels for voltage or current output at up to 13-bit resolution. Each channel is short-circuit protected, and voltage outputs support two- or four-wire connection to compensate for line resistance on long actuator cables, drawing 24 V DC load voltage with reverse-polarity protection.

Technical Specifications

Selection Notes

Use the four-wire voltage-output connection on this SM 432 when the actuator cable run is long enough that line resistance would otherwise distort the setpoint, since the two-wire mode has no such compensation. The 500 Ω current-output load limit (600 Ω with reduced common-mode voltage) sets the maximum loop resistance for 4-20 mA actuators driven directly from this module without an external booster.

Applications

Eight isolated voltage or current outputs at 13-bit resolution suit driving control valve positioners, VFD speed references, and analog indicators from an S7-400 rack. Short-circuit protection on every channel means a miswired output does not take down the module or the rest of the rack.