B&R 8AC125.60-1
BiSS encoder interface (Mode C) for installation in ACOPOS servo drives Encoder supply 5 V Encoder monitoring ACOPOS plug-in module, BiSS/SSI SinCos/SSI interface
Lifecycle & replacement
No manufacturer-published lifecycle data for B&R part numbers is indexed here yet. Ask IAC to check availability and an upgrade path.
Servo amplifiers, motors, encoders and cables are matched sets. If this part is no longer available in its original form, the manufacturer's newer generation usually will not pair with the rest of the axis, so an upgrade normally covers the drive, motor and cables together. Send us the nameplate details and we will confirm availability of an exact spare or scope a compatible upgrade.
IAC stocks legacy spares and exchange units and quotes upgrade paths. Send us the nameplate details and we will confirm a compatible replacement.
Technical specifications
General information
| Certifications / CE | Yes |
| Certifications / UKCA | Yes |
| Certifications / CRA (Cyber Resilience Act) | Non-compliant |
| Certifications / UL | cULus E225616 Power conversion equipment |
| Certifications / KC | Yes |
| Module type | ACOPOS plug-in module |
| B&R ID code | 0xACF3 |
| Slot | Slots 2, 3 and 4 |
| Power consumption | Max. 4.5 W |
Encoder inputs
| Electrical isolation / Encoder - ACOPOS | No |
| Encoder power supply / Output voltage | Typ. 5 V |
| Encoder power supply / Load capacity | 250 mA |
| Encoder power supply / Sense lines | Yes |
| Sine/Cosine inputs / Signal transmission | Differential signals, symmetrical |
| Sine/Cosine inputs / Signal frequency (-3 dB) | DC up to 300 kHz |
| Sine/Cosine inputs / Signal frequency (-5 dB) | DC up to 400 kHz |
| Sine/Cosine inputs / Differential voltage | 0.5 to 1.25 VSS |
| Sine/Cosine inputs / Common-mode voltage | Max. ±7 V |
| Sine/Cosine inputs / Terminating resistor | 120 Ω |
| Sine/Cosine inputs / Resolution | 16384 * Number of encoder lines |
| Sine/Cosine inputs / Accuracy | - |
| Reference input / Signal transmission | Differential signal, symmetrical |
| Reference input / Differential voltage for low | ≤-0.2 V |
| Reference input / Differential voltage for high | ≥+0.2 V |
| Reference input / Common-mode voltage | Max. ±7 V |
| Reference input / Terminating resistor | 120 Ω |
| Serial interface / Signal transmission | Synchronous |
| Serial interface / Protocol | RS485 |
| Serial interface / Baud rate | Depends on the configured functionality |
| Quantity | 1 |
| Module-side connection | 15-pin female DSUB |
| Status indicators | UP/DN LEDs |
| Encoder monitoring | Yes |
| Max. encoder cable length | 50 m |
Ambient conditions
| Temperature / Operation / Nominal | 5 to 40°C |
| Temperature / Operation / Maximum | 55°C |
| Temperature / Storage | -25 to 55°C |
| Temperature / Transport | -25 to 70°C |
| Relative humidity / Operation | 5 to 85% |
| Relative humidity / Storage | 5 to 95% |
| Relative humidity / Transport | Max. 95% at 40°C |
Documentation & CAD
Files hosted by B&R Industrial Automation; links open the official download page.
Datasheets
Manuals
ECAD / EPLAN
Get a quote for a replacement
Industrial Automation Co. stocks, sources, and repairs B&R parts — new, refurbished, or exchange units with warranty.
Specifications from the official B&R product catalog. Always confirm against the datasheet for your exact revision.