175Z7281

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The 175Z7281 is a high-performance drive with a supply voltage range of 10 to 30 V DC and an output signal of 4 to 20 mA. Manufactured by Danfoss as part of the VLT 6000 HVAC Drives series, it features an ingress protection rating of IP65 (plug) and IP67 (cable).

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Product Description:

The Danfoss 175Z7281 is a dependable and feature-rich drive from the VLT 6000 HVAC Drives series. It was designed for sophisticated control and monitoring in HVAC systems. It has an analogue output signal range of 4 to 20 mA, which means it can work with a lot of different industrial sensors and control systems to provide users with accurate process feedback and system integration. This drive can handle tough environments, with a working temperature range of −40°C to 80°C and IP65 ingress protection when completely plugged in.

These qualities make sure that the product will last and work well, especially in tough places like mechanical rooms or outside enclosures. The 175Z7281 has a user-friendly display interface with status messages that are easy to see on the fourth line. The operator may always see important operating information, such the kind of control, active reference, and current drive state (for example, "Running," "Stop," or "Stand by"). The drive has sophisticated ramp features, such a configurable ramp-up and ramp-down profile (RAMPING), and an auto-ramp function that automatically raises the output frequency as required to help prevent overvoltage trips from happening.

Other clever energy-saving features include Sleep Boost, which gives the motor more torque when it starts up in closed-loop mode, and Sleep Mode, which stops the motor when it's not needed but starts it up again right away when the system needs it. Both characteristics assist reduce energy use and make equipment last longer. The Danfoss 175Z7281 also contains a complete warning and alarm system, offering unambiguous signals and diagnostics for operational issues. Users may manage and reset warnings and alarms in a number of methods, such as using the control key, digital inputs, or serial connection.

Accuracy (maximum)
±2% FS
Accuracy (typical)
±1% FS
Burst Pressure
Min. 300 bar
Compensated Temp Range Hp
0 to 80°C
Compensated Temp Range Lp
−30 to 40°C
Enclosure Material
AISI 316L (EN 10088-1.1.4404)
Ingress Protection (cable)
IP67
Ingress Protection (plug)
IP65
Operating Temp Range
−40 to 80°C
Output Signal
4 to 20 mA
Supply Voltage
10 to 30 V DC
Thermal Zero Shift (max)
≤±0.4% FS/10K
Thermal Zero Shift (typical)
≤±0.2% FS/10K
Wetted Material
AISI 316L (EN 10088-1.1.4404)

Frequently Asked Questions about 175Z7281:

Q: What is the typical accuracy of the 175Z7281 sensor?

A: The typical accuracy is ±1% of full scale (FS).

Q: What is the maximum accuracy specification for this sensor?

A: The maximum accuracy is ±2% of full scale (FS).

Q: What type of output signal does the 175Z7281 provide?

A: It provides a 4 to 20 mA output signal.

Q: What is the recommended supply voltage for this sensor?

A: The supply voltage range is 10 to 30 V DC.

Q: What is the minimum burst pressure rating for the 175Z7281?

A: The sensor has a minimum burst pressure rating of 300 bar.


Internal Product Review

  • ‘‘The Danfoss 175Z7281 is a proud part of the VLT 6000 HVAC Drives line. It has an output signal range of 4 to 20 mA. This machine can work in temperatures from −40 to 80°C and has IP65 ingress protection when plugged in.’’

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