Technical Specifications

Main Features and Advantages

Pure ±10 V eight-channel density in one compact-U slot.​ Many AO 470 sub-types try to be everything—±10 V plus 0–20 mA, or shifted ranges like +1–5 V / +4–20 mA—which is flexible but means the output stage must accommodate both voltage and current drive, with jumper or range-module dependencies. The Siemens 6ES5470-4UB13​ commits all eight channels to ±10 V only, which lets the output driver topology stay optimized for voltage-class loads: low output impedance over the 5 kΩ minimum, clean settling, and no current-loop compliance-headroom compromise. For panels where every AO point goes to a VFD ±10 V speed input, a positioner ±10 V command, or a ±10 V recorder channel, the 6ES5470-4UB13​ is the cleanest match—no unused current capability taking up mental space in the spare-holding BOM.Floating isolation protecting sensitive analog setpoints.​ Each of the eight channels on the Siemens 6ES5470-4UB13​ is galvanically isolated from the S5 backplane and, within practical limits, the isolation barrier suppresses ground-reflection from field devices that are grounded at the skid while the S5 rack is grounded at the MCC. This matters on ±10 V loops because a few hundred millivolts of common-mode walks straight into setpoint accuracy—especially visible on VFD speed commands where 0.5 % of ±10 V = 100 mV = 1 % of full-speed span. The 6ES5470-4UB13‘s floating architecture keeps the S5 rack’s digital-noise domain (DO 454 switching, Profibus CP traffic) away from the analog output staging.12-bit resolution and sub-ms settling for dynamic loops.​ The Siemens 6ES5470-4UB13​ delivers 12-bit DAC per channel, which over a ±10 V span gives ~4.88 mV/LSB. On a VFD that interprets ±10 V as 0–100 % speed (with, say, 0 V = reverse max, +10 V = forward max, or whatever the drive’s ±10 V mapping is), that’s ~0.05 % speed granularity—more than adequate for the vast majority of S5-era drive fleets where the VFD’s own input resolution is the bottleneck, not the PLC AO. Settling under 1 ms means a ramp generated in the S5 OB1 (say, a 4-second soft-start ramp broken into 40 ms steps) comes out of the 6ES5470-4UB13​ without visible slew lag, important on positioner loops where the AO is tracking a cascade-from-PID output.Single-slot, no external analog supply.​ Like its AI 463 and DO 454 siblings on the same rack, the Siemens 6ES5470-4UB13​ pulls 5 V and 24 V from the S5 backplane and contains its own precision voltage reference and output buffer amps on-card. No ±15 V or dedicated analog supply wiring, no extra DIN-rail PSU, no extra failure point. In S5-135U panels where the rack is already dense (DO 454 high-current, DI 430 115 V, AI 463 for transmitters, CP 443-class comms), the single-slot footprint of the 6ES5470-4UB13​ preserves rack real estate.4UB13 vs. the rest of the AO 470 family—choosing right.​ The S5 AO 470 lineup splits by range and by mechanical family (compact U for 135U/155U, 7LA/LB/LC for 115U/F, 8MA/8MB for 90U/95U/100U/ET). Within compact U alone: 4UA13 = ±10 V + 0–20 mA (mixed), 4UB13 = ±10 V only (pure voltage, this profile), 4UC13 = +1–5 V + 4–20 mA (shifted range for 4–20 mA transmitters-as-actuators). Buyers frequently mis-match these—if the panel needs to drive a 4–20 mA positioner, the Siemens 6ES5470-4UB13​ will not do it (no current mode); that panel wants 4UA13 or 4UC13 instead. Making this distinction explicit in the spare-spec avoids a “ordered wrong, rack down” scenario during turnaround.