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.
To ensure continuous, uninterrupted monitoring within the critical 3500 Machinery Protection System, the Bently Nevada 3500/15-04-04-CN provides redundant, highly stable power distribution to all rack-installed modules. This half-height module is configured with dual low-voltage DC inputs to accept power from independent sources, minimizing the risk of a single-point failure in high-availability industrial monitoring setups. By utilizing high-frequency filtering and precise voltage regulation, it safeguards sensitive internal measurement cards from external electrical transients and voltage drops common in heavy industrial facilities.
| Parameter | Value / Specification |
|---|---|
| Manufacturer | Bently Nevada (Baker Hughes) |
| Part Number | 3500/15-04-04-CN |
| Series | 3500 Machinery Protection System |
| Module Type | Half-Height Power Supply Module |
| Power Supply Type (Top Slot) | 04 = Low Voltage DC (20 to 30 Vdc) |
| Power Supply Type (Bottom Slot) | 04 = Low Voltage DC (20 to 30 Vdc) |
| Rated Input Voltage Range | 20 to 30 Vdc |
| Agency Approval Option | CN = Country-specific regional approvals |
| Country of Origin | United States (USA) |
| Net Module Weight | 1.39 kg (3.06 lbs) |
| Shipping Weight (Calculated) | 3.00 kg (6.61 lbs) |
| Package Dimensions (Calculated) | 32.0 cm x 15.0 cm x 21.0 cm |
The 3500/15-04-04-CN is designed specifically for integration with the standard 3500 series chassis. It cannot be mixed with high-voltage AC modules on the same input terminal configuration. Ensure your backplane jumpers are verified for DC distribution when performing migrations from older AC-based legacy 3500/15 systems.
In enclosed field panels where ambient operating temperatures exceed 50 degC, running redundant power supplies generates localized hot spots. We advise maintaining a minimum 1U ventilation clearance directly above the rack or installing internal chassis fan assemblies to prevent thermal overload and minimize wear on the supply’s electrolytic smoothing capacitors.
Always use high-purity, multi-strand 14 AWG copper wire to handle the high current demands at the lower end of the 20 Vdc threshold. Prior to energizing, ensure the instrument earth and rack chassis grounds are securely bonded at a single point to prevent ground loops that could introduce high-frequency noise to adjacent machinery vibration cards.
CRITICAL WARNING: ELECTRICAL HAZARD
Ensure all primary low-voltage power feed breakers are fully de-energized, locked out, and tagged out (LOTO) prior to terminal block connection or removal. Failure to secure source power can result in terminal arcing, system backplane damage, and personnel injury.
Slide the half-height module carefully into the designated left-hand power slots of the 3500 rack chassis until it seats firmly into the backplane connectors.
Hand-tighten the integrated retaining thumb screws on the front panel to secure the module mechanically against vibration.
Connect the external 24 Vdc feed conductors to the appropriate terminals on the input terminal block at the rear of the rack, taking strict care to maintain correct polarity (+/-).
Energize the feed circuit breaker and confirm that the front panel OK LED is illuminated green, indicating correct voltage output.
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To ensure continuous, uninterrupted monitoring within the critical 3500 Machinery Protection System, the Bently Nevada 3500/15-04-04-CN provides redundant, highly stable power distribution to all rack-installed modules. This half-height module is configured with dual low-voltage DC inputs to accept power from independent sources, minimizing the risk of a single-point failure in high-availability industrial monitoring setups. By utilizing high-frequency filtering and precise voltage regulation, it safeguards sensitive internal measurement cards from external electrical transients and voltage drops common in heavy industrial facilities.
| Parameter | Value / Specification |
|---|---|
| Manufacturer | Bently Nevada (Baker Hughes) |
| Part Number | 3500/15-04-04-CN |
| Series | 3500 Machinery Protection System |
| Module Type | Half-Height Power Supply Module |
| Power Supply Type (Top Slot) | 04 = Low Voltage DC (20 to 30 Vdc) |
| Power Supply Type (Bottom Slot) | 04 = Low Voltage DC (20 to 30 Vdc) |
| Rated Input Voltage Range | 20 to 30 Vdc |
| Agency Approval Option | CN = Country-specific regional approvals |
| Country of Origin | United States (USA) |
| Net Module Weight | 1.39 kg (3.06 lbs) |
| Shipping Weight (Calculated) | 3.00 kg (6.61 lbs) |
| Package Dimensions (Calculated) | 32.0 cm x 15.0 cm x 21.0 cm |
The 3500/15-04-04-CN is designed specifically for integration with the standard 3500 series chassis. It cannot be mixed with high-voltage AC modules on the same input terminal configuration. Ensure your backplane jumpers are verified for DC distribution when performing migrations from older AC-based legacy 3500/15 systems.
In enclosed field panels where ambient operating temperatures exceed 50 degC, running redundant power supplies generates localized hot spots. We advise maintaining a minimum 1U ventilation clearance directly above the rack or installing internal chassis fan assemblies to prevent thermal overload and minimize wear on the supply’s electrolytic smoothing capacitors.
Always use high-purity, multi-strand 14 AWG copper wire to handle the high current demands at the lower end of the 20 Vdc threshold. Prior to energizing, ensure the instrument earth and rack chassis grounds are securely bonded at a single point to prevent ground loops that could introduce high-frequency noise to adjacent machinery vibration cards.
CRITICAL WARNING: ELECTRICAL HAZARD
Ensure all primary low-voltage power feed breakers are fully de-energized, locked out, and tagged out (LOTO) prior to terminal block connection or removal. Failure to secure source power can result in terminal arcing, system backplane damage, and personnel injury.
Slide the half-height module carefully into the designated left-hand power slots of the 3500 rack chassis until it seats firmly into the backplane connectors.
Hand-tighten the integrated retaining thumb screws on the front panel to secure the module mechanically against vibration.
Connect the external 24 Vdc feed conductors to the appropriate terminals on the input terminal block at the rear of the rack, taking strict care to maintain correct polarity (+/-).
Energize the feed circuit breaker and confirm that the front panel OK LED is illuminated green, indicating correct voltage output.
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 .
| Country of origin |
United States
|