Implementing 3-Switch XOR Ladder Logic with Internal Bit
Implement a 3-SPST switch XOR light circuit in LogixPro or RSLogix 500 using an internal relay bit. Includes truth tables, boolean equations, and verified.
The ATV21WU55N4C is a Variable Speed Drive from the Altivar 21 series, designed by Schneider Electric to deliver precise and energy-efficient motor control for commercial and industrial applications. This drive features a power rating of 5.5 kW (7.5 HP) and operates seamlessly at a supply voltage of 480 V. To minimize electromagnetic interference and comply with strict noise regulations, the unit features an integrated Class B EMC filter.
Engineered with an robust IP54-rated housing, the ATV21WU55N4C provides strong protection against dust ingress and water splashes, allowing for direct installation in demanding environments without requiring an additional protective cabinet. This makes it highly efficient for optimizing motor performance in HVAC, ventilation, and decentralized pumping operations. While currently classified in the phase-out lifecycle stage, it remains a trusted components for system upgrades and drop-in replacements.
| Category | Specification |
|---|---|
| Manufacturer | Schneider Electric |
| Range | Altivar |
| Subrange | 21 |
| Product Type | Variable frequency drives |
| Power Rating | 5.5 kW (7.5 HP) |
| Supply Voltage | 480 V |
| Filter | EMC Filter Class B |
| Degree of Protection | IP54 |
| Dimensions | 34.00 x 23.00 x 20.80 cm |
| Weight | 9.65 kg |
| Product Phase | Phase-Out |
| Commodity Code | 85044095 |
Global Express Shipping
Returns & Warranty

The ATV21WU55N4C is a Variable Speed Drive from the Altivar 21 series, designed by Schneider Electric to deliver precise and energy-efficient motor control for commercial and industrial applications. This drive features a power rating of 5.5 kW (7.5 HP) and operates seamlessly at a supply voltage of 480 V. To minimize electromagnetic interference and comply with strict noise regulations, the unit features an integrated Class B EMC filter.
Engineered with an robust IP54-rated housing, the ATV21WU55N4C provides strong protection against dust ingress and water splashes, allowing for direct installation in demanding environments without requiring an additional protective cabinet. This makes it highly efficient for optimizing motor performance in HVAC, ventilation, and decentralized pumping operations. While currently classified in the phase-out lifecycle stage, it remains a trusted components for system upgrades and drop-in replacements.
| Category | Specification |
|---|---|
| Manufacturer | Schneider Electric |
| Range | Altivar |
| Subrange | 21 |
| Product Type | Variable frequency drives |
| Power Rating | 5.5 kW (7.5 HP) |
| Supply Voltage | 480 V |
| Filter | EMC Filter Class B |
| Degree of Protection | IP54 |
| Dimensions | 34.00 x 23.00 x 20.80 cm |
| Weight | 9.65 kg |
| Product Phase | Phase-Out |
| Commodity Code | 85044095 |
Global Express Shipping
Returns & Warranty
Orders are processed and delivered Monday-Friday (excluding public holidays).
For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .
| Color pattern |
Greyish White
|
| Country of origin |
France
|