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 ATV21HD37N4 is a Variable Speed Drive from the Altivar 21 series, designed by Schneider Electric to provide precise motor control for demanding industrial applications. This drive is rated for an output power of 37 kW (50 HP) and is engineered for operation with a 480 V supply. It incorporates an integrated Class A EMC filter to minimize electromagnetic interference, supporting reliable operation in standard industrial electrical environments.
The ATV21HD37N4 is specifically optimized for applications requiring efficient speed and torque regulation, such as HVAC systems, centrifugal pumps, and fan control. The unit is housed in an IP20-rated enclosure, providing a compact footprint that allows for efficient installation within electrical cabinets and control panels. As a phase-out product, this drive remains a dependable choice for maintenance and upgrades in existing industrial control architectures.
| Category | Specification |
|---|---|
| Manufacturer | Schneider Electric |
| Range | Altivar |
| Subrange | 21 |
| Product Type | Variable frequency drives |
| Power Rating | 37 kW (50 HP) |
| Supply Voltage | 480 V |
| Filter | EMC Filter Class A |
| Degree of Protection | IP20 |
| Dimensions | 42.00 x 24.00 x 12.20 cm |
| Weight | 27.40 kg |
| Product Phase | Phase-Out |
Global Express Shipping
Returns & Warranty

The ATV21HD37N4 is a Variable Speed Drive from the Altivar 21 series, designed by Schneider Electric to provide precise motor control for demanding industrial applications. This drive is rated for an output power of 37 kW (50 HP) and is engineered for operation with a 480 V supply. It incorporates an integrated Class A EMC filter to minimize electromagnetic interference, supporting reliable operation in standard industrial electrical environments.
The ATV21HD37N4 is specifically optimized for applications requiring efficient speed and torque regulation, such as HVAC systems, centrifugal pumps, and fan control. The unit is housed in an IP20-rated enclosure, providing a compact footprint that allows for efficient installation within electrical cabinets and control panels. As a phase-out product, this drive remains a dependable choice for maintenance and upgrades in existing industrial control architectures.
| Category | Specification |
|---|---|
| Manufacturer | Schneider Electric |
| Range | Altivar |
| Subrange | 21 |
| Product Type | Variable frequency drives |
| Power Rating | 37 kW (50 HP) |
| Supply Voltage | 480 V |
| Filter | EMC Filter Class A |
| Degree of Protection | IP20 |
| Dimensions | 42.00 x 24.00 x 12.20 cm |
| Weight | 27.40 kg |
| Product Phase | Phase-Out |
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
|