178B5520
Wake Industrial LLC is not an authorized distributor of this product.
MPN: VLT2805PD2B20STR0DBF00A00C1
No Tariffs On US Orders- Straightforward Pricing: No Rush Fees, No Credit Card Fees
-
In-Stock, Ships 3-5 Days
The 178B5520 is a low-voltage drive featuring a rated motor power of 0.55 kW and an enclosure rating of IP20. Made by Danfoss as part of the VLT 2800 Low Voltage Drives, it supports a mains supply voltage of 1 x 220-240 V AC and a frequency of 50/60 Hz. This drive has a maximum output frequency of 132 Hz.
To contact sales for pricing and lead time:
Payment Methods
Shipping Methods
Our Credentials
Product Description:
The 178B5520 Adjustable Frequency Drive supports both 50 Hz and 60 Hz supply frequencies that makes it adaptable to global standards. It maintains stable operation across various industrial applications with a nominal power factor of 0.90 at rated load. The unit allows a voltage imbalance tolerance of up to ± 2.0 % of the rated supply.
This Danfoss 178B5520 adjustable frequency drive delivers versatile output parameters and features an output voltage range from 0 % to 100 % of the supply voltage. It supports two frequency output ranges: 0.2 – 132 Hz and 1 – 1000 Hz that enables precise control for different motor types. The maximum short circuit current capacity of the model is rated at 100,000 A that provides high level protection against system faults. The drive delivers an overload torque of up to 160% whether operating under constant or variable torque characteristics. These features ensure the drive can handle heavy startup loads or sudden torque demands without performance degradation. The control card of this drive includes five programmable digital inputs. The logic operates on a 0 – 24 V DC input level using PNP positive logic. A logic ‘0’ is interpreted below 5 V DC and a logic ‘1’ is above 10 V DC. The input resistance for terminals 18, 19, 2 and 29 is approximately 4 kΩ while terminal 33 has a resistance of approximately 2 kΩ.
The control card of the 178B5520 adjustable frequency drive includes a 24 V DC power supply available on terminal 12. It supports a maximum load of 130 mA and is galvanically isolated from the supply voltage (PELV). This supply shares potential with the analog and digital I/Os which enhances operational safety while maintaining effective signal interfacing.
Frequently Asked Questions about 178B5520:
Q: How does the 178B5520 adjustable frequency drive ensure smooth motor control across diverse speed profiles?
A: It offers two output frequency ranges that extend up to 1000 Hz, allowing precise control across multiple motor types. This enables compatibility with both high-speed and precision-regulated motion systems.
Q: What should be considered when using the 178B5520 adjustable frequency drive in regions with minor line voltage inconsistencies?
A: It tolerates a ±2.0% supply voltage imbalance, which stabilizes performance under non-uniform grid conditions. This helps reduce motor stress and mitigates the risk of derating in three-phase supply scenarios.
Q: How does the 178B5520 adjustable frequency drive protect against extreme fault conditions in high-power installations?
A: Its design supports a short circuit current withstand up to 100,000 A, ensuring resilience during severe electrical faults. This makes it suitable for systems with high SCCR-rated switchgear.
Q: How do the digital input characteristics of the 178B5520 adjustable frequency drive affect control integration with PLC systems?
A: It uses PNP logic with a 0–24 V DC input range and defined logic thresholds for ‘0’ and ‘1’. This ensures compatibility with standard automation hardware while maintaining clean signal recognition.
Q: How does the onboard 24 V DC supply of the 178B5520 adjustable frequency drive contribute to system-level signal integrity?
A: It provides galvanically isolated power that shares potential with I/O interfaces. This architecture supports safe interfacing while reducing noise and ground loop risk in control circuits.
