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131B3177 Danfoss

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Internal Product Review

The 131B3177 is a Danfoss VLT FC 302 automation drive engineered for dependable motor control on 3 x 380-500 VAC systems. Normal-duty performance at 18.5 kW and 37.5 A output current provides strong capacity for demanding automation loads. IP21 / Type 1 enclosure protection and PROFIBUS DP V1 MCA 101 fieldbus capability make this drive a strong fit for integrated industrial installations.

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Product Description:

The 131B3177 is an AC variable frequency drive produced by Danfoss for the VLT FC 302 Automation Drives series. It regulates the speed of three-phase induction motors, allowing motor torque and speed to follow the operating demands of conveyors, pumps, fans, and other industrial equipment. The adjustable output can improve process control when an application does not require the connected motor to run continuously at full speed. Its B1 frame provides a compact footprint for installation in control panels, while standard metric knockouts accommodate the required power and control cables.

The unit connects to plant power through a supply range of 3 x 380–500 VAC. During heavy-duty operation, it can deliver an output line current of 32 A and support a continuous mechanical load of 15 kW. The enclosure has a protection rating of IP21 / Type 1, which prevents accidental contact with live components and limits the entry of vertically falling water droplets. These protections make the enclosure suitable for clean indoor areas where additional resistance to dust or directed water is unnecessary. Communication with higher-level controllers is provided by the integrated PROFIBUS DP V1 MCA 101 interface, enabling remote parameter access, operational monitoring, and real-time setpoint updates. The drive does not include a factory-installed mains disconnect, so appropriate upstream isolation and protective equipment must be provided separately.

For normal-overload operation, the drive supplies 37.5 A and supports motor applications up to 18.5 kW. Heat loss during this service reaches 379 W, and panel ventilation must remove the generated heat to maintain an acceptable internal temperature. Under the stated alternate duty condition, power dissipation can reach 465 W, requiring additional airflow capacity within the enclosure. Conducted electrical emissions are reduced by the built-in A1/B (C1) RFI filter, which supports operation in residential and light-industrial electrical environments. The control circuit board has a Class 3C2 conformal coating that provides resistance to moderate humidity and airborne sulfides. Because the drive is supplied without a local control panel, setup, parameter changes, and operating commands must be handled through remote software or the fieldbus connection.

Cable Entries
Standard
Enclosure Rating
IP21 / Type 1
Fieldbus Option
PROFIBUS DP V1 MCA 101
Frame Size
B1
Local Control Panel
None
Mains Option
None
Mains Voltage
3 x 380-500 VAC
Output Current (ho, 380-440 V)
32 A
Output Current (no, 380-440 V)
37.5 A
Pcb Coating
Class 3C2
Power Loss (ho)
379 W
Power Loss (no)
465 W
Power Rating (ho)
15 kW
Power Rating (no)
18.5 kW
Rfi Filter Class
A1/B (C1)

Frequently Asked Questions about 131B3177:

Q: What is the input voltage range for the Danfoss 131B3177 drive?

A: The 131B3177 drive supports a three-phase mains voltage range of 380 to 500 VAC for flexible industrial integration.

Q: Which fieldbus communication option is included with the 131B3177 drive?

A: This drive is equipped with a PROFIBUS DP V1 MCA 101 fieldbus option for network connectivity.

Q: What is the maximum output current of the 131B3177 at 380-440 V?

A: The maximum output current at 380-440 V normal operation is 37.5 A for this drive model.

Q: What is the enclosure protection rating of the 131B3177 drive?

A: The 131B3177 is rated for an IP21 / Type 1 enclosure, providing basic protection against solid objects and limited liquid ingress.

Q: What is the normal power rating of the Danfoss 131B3177 drive?

A: This drive features a power rating of 18.5 kW under normal operating conditions for demanding applications.

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