Description
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Product Model | AS-B808-016 |
| Manufacturer | Schneider Electric / Modicon |
| Product Family | Modicon 800 Series / 984 |
| I/O Type | Discrete AC Output |
| Number of Outputs | 16 |
| Rated Voltage | 230 VAC |
| Operating Voltage | 160–260 VAC |
| Frequency | 47–63 Hz |
| Output Groups | 2 |
| Outputs per Group | 8 |
| Output Technology | Triac |
| Continuous Current / Point | 2 A |
| One-Cycle Current / Point | 50 A |
| Maximum Group Current | 6 A |
| Maximum Module Current | 12 A |
| Leakage Current | 8 mA max. at 230 VAC |
| OFF → ON Response | 8.3 ms max. |
| ON → OFF Response | 8.3 ms max. |
| Backplane Space | 1 slot |
| Weight | Approx. 1.25 kg |
| Terminal Connector | AS-8534-000 |
The technical reference material identifies the B808-016 specifically as a 230 VAC output module with 16 independent outputs. Its triac outputs are intended for loads such as relays, pilot lamps, motor starters, and solenoids.
Product Introduction
The Schneider Electric AS-B808-016 is a 16-point AC discrete output module for the legacy Modicon 800 Series / 984 control platform. It converts PLC logic commands into 16 switched 230 VAC field outputs, arranged as two groups of eight. The module operates from 160–260 VAC at 47–63 Hz and uses triac switching rather than mechanical relay contacts.
From a maintenance standpoint, the important issue is not simply matching “16-point 230 VAC output.” The two eight-point groups, current limits, terminal arrangement, and original B800 wiring all matter. Schneider’s B800-to-X80 modernization documentation provides direct migration paths from AS-B808-016 to BMXDAO1605 and BMXDRA1605, but the replacement requires attention to adapter and wiring arrangements rather than assuming a direct plug-in substitution.
AS-B808-016
Application Scenarios & Field Pitfalls
Engineering Pain Point
The AS-B808-016 is typically encountered in older PLC installations where the controller and field wiring have remained operational for many years. The main maintenance challenge is sourcing an exact replacement without changing the existing AC load wiring or output-group arrangement.
Typical Applications
- Machine automation: switching contactors, motor starters, and auxiliary machine actuators.
- Material handling: controlling conveyor starters, solenoids, and signaling equipment.
- Process equipment: switching AC valves, pumps, fans, and auxiliary control devices.
- Building or utility automation: controlling 230 VAC lamps, relays, and auxiliary equipment.
The original Modicon documentation specifically lists relays, pilot lamps, motor starters, and solenoids as suitable load examples.
Technical Pitfalls to Avoid
- Do not treat it as a relay-output module. The B808-016 uses triac switches. Its 8 mA maximum leakage current at 230 VAC can matter when driving sensitive loads that have very low holding current.
- Respect the two-group current limits. Although an individual point can handle up to 2 A continuously, each eight-output group is limited to 6 A and the complete module to 12 A. These limits should be checked against the actual simultaneous load profile.
- Do not assume a modern X80 module is a physical drop-in replacement. Schneider’s migration documentation shows dedicated adapter assemblies and wiring maps for. The documented X80 migration includes BMXDAO1605 and BMXDRA1605 options, with adapter assemblies depending on the selected architecture.
Related Products
- BMXDAO1605 — Modern Modicon X80 16-point 230 VAC discrete output option identified by Schneider’s B800 modernization documentation as a migration target for.
- BMXDRA1605 — X80 relay-output alternative appearing in Schneider’s migration paths; evaluate it based on the actual load and required output technology.
- AS-B809-016 — 16-point 230 VAC input module; electrically opposite in function and should not be confused with the output module.
- AS-B806-032 — Legacy B800 32-point output module for installations requiring a larger output count; its voltage and grouping arrangement differ from.
- AS-B804-X16 — Legacy 115 VAC/variant output family covered in Schneider’s B800-to-X80 migration documentation; not a direct electrical substitute for a 230 VAC installation.
- AS-B810-008 — Legacy 8-point isolated AC output module; lower point count and different electrical configuration.
- AS-B814-108 — Legacy B800 relay-output module; useful where mechanical relay contacts are required instead of triac switching.
Procurement Check
For an replacement, verify / ASB808016, the installed Modicon 800/984 rack configuration, terminal connector, output-group wiring, and the actual AC load before ordering. If modernization is being considered, Schneider’s documented migration path should be treated as a wiring and adapter conversion, not an assumption of one-for-one mechanical replacement.
