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 ABB 61298487 is a dedicated DSU CONTROL NDSC-01 control board engineered for the ACS 600 frequency converter series. It serves as the primary hardware processing unit for Diode Supply Units (DSU) managing six-pulse and twelve-pulse half-controlled rectifier bridges. The device directly supervises high-ohmic AC line voltage sensing, DC busbar measurements, synchronization timing, and gate pulse generation for the power semiconductors. It integrates software logic to ensure seamless execution of charging modes and normal operational tracking within continuous current configurations.
| Parameter | Value |
|---|---|
| Manufacturer | ABB |
| Product ID | 61298487 |
| Product Name | DSU CONTROL NDSC-01 |
| Replacement Product ID (NEW) | 64560930 |
| Country of Origin | Finland (FI) |
| Customs Tariff Number | 85049099 |
| Digital Inputs | 3 channels (galvanically isolated, 10 ms time constant) |
| Digital Input Voltage Range | 24 VDC ... 230 VAC |
| Digital Outputs | 3 + 1 relay outputs (1500 VAC channel test voltage) |
| Auxiliary Output Supply | +24 VDC (500 mA, fuse protected) |
| Net Weight | 0.8 kg |
| Gross Weight | 0.8 kg |
| Connector Pin | Function |
|---|---|
| X1 Pins 1 and 2 | Connection interface for an optional current transformer with a 400/1 A ratio |
| X1 Pins 1 and 3 | Alternative 24 VDC auxiliary digital input for earth fault indicator tracking |
| X2 Pins 1, 2 | Digital Input 1 (DI1) connection terminal |
| X2 Pins 3, 4 | Digital Input 2 (DI2) connection terminal |
| X2 Pins 5, 6 | Digital Input 3 (DI3) connection terminal |
| X3 Terminal | +24 VDC fuse-protected auxiliary power output connection |
| X4 Pins 1, 2 | Relay Digital Output 1 (DO1) connection terminal |
| X4 Pins 3, 4 | Relay Digital Output 2 (DO2) connection terminal |
| X4 Pins 5, 6 | Relay Digital Output 3 (DO3) connection terminal |
| TXD / RXD | DDCS fiber optic communication links for overriding systems |
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Returns & Warranty



The ABB 61298487 is a dedicated DSU CONTROL NDSC-01 control board engineered for the ACS 600 frequency converter series. It serves as the primary hardware processing unit for Diode Supply Units (DSU) managing six-pulse and twelve-pulse half-controlled rectifier bridges. The device directly supervises high-ohmic AC line voltage sensing, DC busbar measurements, synchronization timing, and gate pulse generation for the power semiconductors. It integrates software logic to ensure seamless execution of charging modes and normal operational tracking within continuous current configurations.
| Parameter | Value |
|---|---|
| Manufacturer | ABB |
| Product ID | 61298487 |
| Product Name | DSU CONTROL NDSC-01 |
| Replacement Product ID (NEW) | 64560930 |
| Country of Origin | Finland (FI) |
| Customs Tariff Number | 85049099 |
| Digital Inputs | 3 channels (galvanically isolated, 10 ms time constant) |
| Digital Input Voltage Range | 24 VDC ... 230 VAC |
| Digital Outputs | 3 + 1 relay outputs (1500 VAC channel test voltage) |
| Auxiliary Output Supply | +24 VDC (500 mA, fuse protected) |
| Net Weight | 0.8 kg |
| Gross Weight | 0.8 kg |
| Connector Pin | Function |
|---|---|
| X1 Pins 1 and 2 | Connection interface for an optional current transformer with a 400/1 A ratio |
| X1 Pins 1 and 3 | Alternative 24 VDC auxiliary digital input for earth fault indicator tracking |
| X2 Pins 1, 2 | Digital Input 1 (DI1) connection terminal |
| X2 Pins 3, 4 | Digital Input 2 (DI2) connection terminal |
| X2 Pins 5, 6 | Digital Input 3 (DI3) connection terminal |
| X3 Terminal | +24 VDC fuse-protected auxiliary power output connection |
| X4 Pins 1, 2 | Relay Digital Output 1 (DO1) connection terminal |
| X4 Pins 3, 4 | Relay Digital Output 2 (DO2) connection terminal |
| X4 Pins 5, 6 | Relay Digital Output 3 (DO3) connection terminal |
| TXD / RXD | DDCS fiber optic communication links for overriding systems |
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 |
Green
|
| Country of origin |
Sweden
|
| Power source |
AC-powered
|