Allen-Bradley 284D-FVD4P0Z-10-CR-3-DB-SB-OC ArmorStart 284D Distributed Starter Series
Configured for variable frequency AC motor speed control and dynamic braking execution in DeviceNet field networks, the Allen-Bradley 284D-FVD4P0Z-10-CR-3-DB-SB-OC (284D-FVD4P0Z Variable Frequency Drive) provides direct physical/electrical execution for three-phase induction motor control across distributed processing lines.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 284D-FVD4P0Z-10-CR-3-DB-SB-OC |
| Brand | Allen-Bradley / Rockwell Automation |
| Origin | USA |
| Weight | 10.43 kg (23.00 lbs) |
| Dimensions | Standard ArmorStart 284D Sealed Enclosure Form Factor |
| Operating Temp | -10 deg C to +50 deg C |
| Power Consumption | 1.5 kW (2.0 HP) output rating |
| Control Power Supply | 24 VDC |
| Output Current Rating | 4.0 A at 1.5 kW (2.0 HP) |
| Short Circuit Rating | 10 A rated device |
| Local Interface | Hand-Off-Auto (HOA) Selector Keypad with Jog Function |
| Network Interface | DeviceNet Protocol Adapter |
| Hardware Features | Conduit Entrance, DB Brake Connector, Source Brake Contactor, Output Connector |
Backplane Bus Communication & Deterministic Network Interfacing
The Allen-Bradley 284D-FVD4P0Z-10-CR-3-DB-SB-OC interfaces directly with distributed controller architectures via its embedded DeviceNet communication port, supporting deterministic networks and high communication velocity across field networks. Onboard firmware flash compatibility enables rapid drive parameter configuration, diagnostic messaging, and remote speed command updates. The integrated Hand-Off-Auto keypad with jog functionality offloads manual diagnostic overrides from central PLC logic, maintaining flexible control while scaling network I/O density across multi-axis automated machinery.
Frequently Asked Questions
Q: Can the 284D-FVD4P0Z-10-CR-3-DB-SB-OC drive be disconnected from the DeviceNet bus while the 24 VDC control power is active?
A: No. Main power feeds and 24 VDC control voltage must be isolated before servicing or disconnecting network connectors to prevent electrical contact arcing and communication fault trips on the DeviceNet network.
Q: What function does the integrated source brake contactor (SB) perform on this model?
A: The source brake contactor provides direct electrical switching to actuate an external mechanical motor holding brake, coordinating mechanical lock-up with drive start/stop sequences.
Q: How does the dynamic braking (DB) connector operate during motor deceleration?
A: The DB brake connector interfaces with an external braking resistor, allowing the internal chopper transistor to shunt regenerative electrical energy away from the DC bus during rapid deceleration cycles.
Field Installation Guidelines
Mount the drive vertically on a flat, solid surface or machine frame using the integrated mounting flanges. Maintain a minimum clear distance of 100 mm above and below the cooling heatsink to facilitate unimpeded natural thermal convection.
Run 24 VDC control cables and DeviceNet communication lines through dedicated conduit entrances or armored cable glands, keeping signal leads separated from 3-phase AC motor conductors. Ensure all field output connectors, DB brake connections, and motor brake contactor leads are torqued securely to maintain environmental sealing and mechanical strain relief. Connect the chassis ground lug directly to the main enclosure earth ground using a low-impedance copper grounding strap.
| Parameter | Specification |
|---|---|
| Model | 1794-TB3S |
| Brand | Allen-Bradley |
| Origin | USA |
| Weight | 0.44 lbs (0.20 kg) |
| Dimensions | Standard FLEX I/O Base Footprint |
| Operating Temp | 0 to 55 deg C (32 to 131 deg F) |
| Power Consumption / Rating | 125 VAC/DC, 10 A max through bus |
| Termination Type | Spring-Clamp |
| I/O Terminals | 16 I/O Terminals (0-15) |
| Common Terminals | 18 Common Terminals |
| Voltage Terminals | 18 +Voltage Terminals |
| Enclosure / Mounting | Open Style, DIN Rail Mounted (IP20) |
Backplane Communications & High-Density Termination
The 1794-TB3S provides backplane interconnect execution via integrated male and female edge connectors, allowing seamless pass-through of system power and deterministic I/O data buses between adjacent FLEX I/O bases. Its spring-clamp wiring cage design maintains continuous clamping force against high-vibration environments, preventing field wiring loosening and signal dropouts. The internal backplane bus compatibility supports firmware flash synchronization and hot-swappable module insertion (Removal and Insertion Under Power) without interrupting backplane communication across adjacent I/O slots.
Frequently Asked Questions
Q: What are the wire strip length and conductor sizing requirements for the spring-clamp terminals?
A: Field conductors should be stripped to 9.5 mm (0.37 in). The spring-clamp terminals accommodate solid or stranded copper wire sizes ranging from 0.33 to 2.5 mm sq (22 to 14 AWG) rated at 75 deg C or higher.
Q: Can the 1794-TB3S terminal base be inserted or removed while the system backplane is energized?
A: No. While digital I/O modules plugged into the base support Removal and Insertion Under Power (RIUP), the 1794-TB3S terminal base itself must be installed or removed only when backplane power and field wiring supplies are completely isolated to prevent connector arc damage.
Q: How is field power isolated between adjacent 1794-TB3S bases on the same DIN rail?
A: Field wiring power buses (+V and Common) pass through internal power jumpers between bases. To create separate power isolation zones, the user must insert an isolation key or break the power jumper chain as specified in the FLEX I/O system mounting architecture.
Field Installation Guidelines
- Mount the DIN rail horizontally, ensuring proper grounding of the rail to the enclosure backplate to satisfy EMC immunity standards.
- Snap the 1794-TB3S terminal base onto the DIN rail, pressing firmly until the locking latch engages the rail lip securely.
- Slide the base firmly to the left to mate its backplane connector with the adjacent adapter or preceding terminal base unit.
- Insert a small flat-blade screwdriver into the spring-clamp release slot, insert the stripped conductor into the wire hole, and release the screwdriver to lock the wire.
- Set the module keying dial on the base to the required position for the specific I/O module type before inserting the active I/O card.
Allen-Bradley 284D-FVD4P0Z-10-CR-3-DB-SB-OC ArmorStart 284D Distributed Starter Series
Allen-Bradley 284D-FVD4P0Z-10-CR-3-DB-SB-OC ArmorStart 284D Distributed Starter Series
Configured for variable frequency AC motor speed control and dynamic braking execution in DeviceNet field networks, the Allen-Bradley 284D-FVD4P0Z-10-CR-3-DB-SB-OC (284D-FVD4P0Z Variable Frequency Drive) provides direct physical/electrical execution for three-phase induction motor control across distributed processing lines.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 284D-FVD4P0Z-10-CR-3-DB-SB-OC |
| Brand | Allen-Bradley / Rockwell Automation |
| Origin | USA |
| Weight | 10.43 kg (23.00 lbs) |
| Dimensions | Standard ArmorStart 284D Sealed Enclosure Form Factor |
| Operating Temp | -10 deg C to +50 deg C |
| Power Consumption | 1.5 kW (2.0 HP) output rating |
| Control Power Supply | 24 VDC |
| Output Current Rating | 4.0 A at 1.5 kW (2.0 HP) |
| Short Circuit Rating | 10 A rated device |
| Local Interface | Hand-Off-Auto (HOA) Selector Keypad with Jog Function |
| Network Interface | DeviceNet Protocol Adapter |
| Hardware Features | Conduit Entrance, DB Brake Connector, Source Brake Contactor, Output Connector |
Backplane Bus Communication & Deterministic Network Interfacing
The Allen-Bradley 284D-FVD4P0Z-10-CR-3-DB-SB-OC interfaces directly with distributed controller architectures via its embedded DeviceNet communication port, supporting deterministic networks and high communication velocity across field networks. Onboard firmware flash compatibility enables rapid drive parameter configuration, diagnostic messaging, and remote speed command updates. The integrated Hand-Off-Auto keypad with jog functionality offloads manual diagnostic overrides from central PLC logic, maintaining flexible control while scaling network I/O density across multi-axis automated machinery.
Frequently Asked Questions
Q: Can the 284D-FVD4P0Z-10-CR-3-DB-SB-OC drive be disconnected from the DeviceNet bus while the 24 VDC control power is active?
A: No. Main power feeds and 24 VDC control voltage must be isolated before servicing or disconnecting network connectors to prevent electrical contact arcing and communication fault trips on the DeviceNet network.
Q: What function does the integrated source brake contactor (SB) perform on this model?
A: The source brake contactor provides direct electrical switching to actuate an external mechanical motor holding brake, coordinating mechanical lock-up with drive start/stop sequences.
Q: How does the dynamic braking (DB) connector operate during motor deceleration?
A: The DB brake connector interfaces with an external braking resistor, allowing the internal chopper transistor to shunt regenerative electrical energy away from the DC bus during rapid deceleration cycles.
Field Installation Guidelines
Mount the drive vertically on a flat, solid surface or machine frame using the integrated mounting flanges. Maintain a minimum clear distance of 100 mm above and below the cooling heatsink to facilitate unimpeded natural thermal convection.
Run 24 VDC control cables and DeviceNet communication lines through dedicated conduit entrances or armored cable glands, keeping signal leads separated from 3-phase AC motor conductors. Ensure all field output connectors, DB brake connections, and motor brake contactor leads are torqued securely to maintain environmental sealing and mechanical strain relief. Connect the chassis ground lug directly to the main enclosure earth ground using a low-impedance copper grounding strap.
| Parameter | Specification |
|---|---|
| Model | 1794-TB3S |
| Brand | Allen-Bradley |
| Origin | USA |
| Weight | 0.44 lbs (0.20 kg) |
| Dimensions | Standard FLEX I/O Base Footprint |
| Operating Temp | 0 to 55 deg C (32 to 131 deg F) |
| Power Consumption / Rating | 125 VAC/DC, 10 A max through bus |
| Termination Type | Spring-Clamp |
| I/O Terminals | 16 I/O Terminals (0-15) |
| Common Terminals | 18 Common Terminals |
| Voltage Terminals | 18 +Voltage Terminals |
| Enclosure / Mounting | Open Style, DIN Rail Mounted (IP20) |
Backplane Communications & High-Density Termination
The 1794-TB3S provides backplane interconnect execution via integrated male and female edge connectors, allowing seamless pass-through of system power and deterministic I/O data buses between adjacent FLEX I/O bases. Its spring-clamp wiring cage design maintains continuous clamping force against high-vibration environments, preventing field wiring loosening and signal dropouts. The internal backplane bus compatibility supports firmware flash synchronization and hot-swappable module insertion (Removal and Insertion Under Power) without interrupting backplane communication across adjacent I/O slots.
Frequently Asked Questions
Q: What are the wire strip length and conductor sizing requirements for the spring-clamp terminals?
A: Field conductors should be stripped to 9.5 mm (0.37 in). The spring-clamp terminals accommodate solid or stranded copper wire sizes ranging from 0.33 to 2.5 mm sq (22 to 14 AWG) rated at 75 deg C or higher.
Q: Can the 1794-TB3S terminal base be inserted or removed while the system backplane is energized?
A: No. While digital I/O modules plugged into the base support Removal and Insertion Under Power (RIUP), the 1794-TB3S terminal base itself must be installed or removed only when backplane power and field wiring supplies are completely isolated to prevent connector arc damage.
Q: How is field power isolated between adjacent 1794-TB3S bases on the same DIN rail?
A: Field wiring power buses (+V and Common) pass through internal power jumpers between bases. To create separate power isolation zones, the user must insert an isolation key or break the power jumper chain as specified in the FLEX I/O system mounting architecture.
Field Installation Guidelines
- Mount the DIN rail horizontally, ensuring proper grounding of the rail to the enclosure backplate to satisfy EMC immunity standards.
- Snap the 1794-TB3S terminal base onto the DIN rail, pressing firmly until the locking latch engages the rail lip securely.
- Slide the base firmly to the left to mate its backplane connector with the adjacent adapter or preceding terminal base unit.
- Insert a small flat-blade screwdriver into the spring-clamp release slot, insert the stripped conductor into the wire hole, and release the screwdriver to lock the wire.
- Set the module keying dial on the base to the required position for the specific I/O module type before inserting the active I/O card.
