How to Read this Design Gui... Design Guide 1 How to Read this Design Guide 1.1 How to Read This Design Guide Danfoss reserves the right to revise this publication at any time and to change its contents without prior notice or ® HVAC Drive any obligation to notify former or present users of such revisions or changes.
50–1000 V AC and the 75–1500 V DC voltage properly closed. ranges. Danfoss CE-labels in accordance with the directive • and issues a declaration of conformity upon request.
NOTICE with the installer. As an aid to the installer, Danfoss has prepared EMC installation guidelines for the power drive Mounting frequency converters in aggressive system. Following EMC-correct installation instructions...
D and E enclosures have a stainless steel back-channel option to provide more protection in aggressive environments. Proper ventilation is still required for the SYSTEM CURVE internal components of the drive. Contact Danfoss for more information. 2.5 Vibration and Shock FAN CURVE...
Design Guide 2.7.12 Application Examples The next few pages give typical examples of applications within HVAC. For further information about a given application, consult the Danfoss supplier for an application note that gives a full description of the application. •...
Decreasing the air flow, reduces the energy used to heat or cool the fresh air, resulting in further savings. Several features of the Danfoss HVAC dedicated frequency converter can be used to improve the performance of a CAV system. One concern of controlling a ventilation system is poor air quality. The programmable minimum frequency can be set to maintain a minimum amount of supply air regardless of the feedback or reference signal.
The frequency converters can also be used to turn the fan on and off as needed. With the Danfoss HVAC frequency converter, as the cooling tower fans drop below a certain speed, the cooling effect decreases. When using a gear-box to frequency control the tower fan, a minimum speed of 40–50% could be required.
The maximum frequency limit curbs output from the motor control. 2.8.3 PM/EC+ Motor Control The Danfoss EC+ concept provides the possibility for using high efficiency PM motors in IEC standard frame size operated by Danfoss frequency converters.
All Danfoss frequency converters comply with the requirements for the industrial environment and consequently comply with the lower requirements for home and office environment with a large safety margin.
NOTICE The resistor brake circuit resistance selected should not Time be higher than that recommended by Danfoss. If a brake Illustration 2.32 Typical Braking Cycle resistor with a higher ohmic value is selected, the braking torque may not be achieved because the frequency converter may cut out for safety reasons.
Galvanic isolation in the MCB 101 Digital/analog inputs are galvanically isolated from other Danfoss offers a wide range of options and accessories. inputs/outputs on the MCB 101 and in the control card of the frequency converter. Digital/analog outputs in the MCB 3.1.1 General Purpose Input Output...
Typical motors, designed with temperature sensors to protect bearings from being overloaded, are fitted with 3 PT100/1000 temperature sensors; one in front, one in the back end bearing, and one in the motor windings. The Danfoss option MCB 114 supports 2- or 3-wire sensors with individual temperature limits for under/over temperature. An auto detection of sensor type, PT100 or PT1000 takes place at power up.
An resistor is selected based on its ohmic value, its power SPDT alarm relay for external use is associate with each dissipation rate and its physical size. Danfoss offers a wide setpoint. variety of different resistors that are specifically designed NOTICE for Danfoss frequency converters.
Order the frequency converter as either standard or with integral options by sending a type code string describing the product a to the local Danfoss sales office. The type code is a string of characters describing the configuration, for example:...
24 V DC back-up 130B1208 External options Ethernet IP Ethernet master Table 4.6 A, B, D Slot & External Options For information on fieldbus and application option compatibility with older software versions, contact your Danfoss supplier. Type Description Spare parts Ordering no. Comments...
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4) If one of the 6-pulse modular rectifiers becomes inoperable, it is possible to operate the frequency converter at reduced load with a single 6-pulse rectifier. Contact Danfoss for reconnection details. 5) No paralleling of mains cabling is shown here. A 12-pulse frequency converter used as a 6-pulse should have mains cables of equal numbers and lengths.
Short circuit protection The frequency converter must be protected against short-circuit to avoid electrical or fire hazard. Danfoss recommends using the fuses mentioned in Table 5.13 and Table 5.14 to protect service personnel or other equipment in case of an internal failure.
Illustration 5.102 USB Connection to Frequency Converter PC-based Configuration Tool MCT 10 Set-up Software All frequency converters are equipped with a serial communication port. Danfoss provides a PC tool for communication between PC and frequency converter, PC- based configuration tool MCT 10 Set-up Software.
130B1031. cables. The screen should provide a minimum MCT 31 can also be downloaded from the Danfoss coverage of 80%. The screen material is metal, Internet: www.danfoss.com/BusinessAreas/DrivesSolutions/ typically copper, aluminium, steel or lead. There Softwaredownload/.
The FC protocol, also referred to as FC bus or standard 8-37 Maximum Specify a maximum delay time between bus, is the Danfoss standard fieldbus. It defines an access Inter-Char Delay two received bytes to ensure time-out if technique according to the master-slave principle for transmission is interrupted communications via a serial bus.
7.6.1 Assumptions 7.6.4 Frequency Converter with Modbus Danfoss assumes that the installed controller supports the interfaces in this document, and strictly observes all requirements and limitations stipulated in the controller The frequency converter communicates in Modbus RTU and frequency converter.
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• Check for loose or missing wiring WARNING 42, Overload of digital output on X30/6 or If necessary, contact the Danfoss supplier or service overload of digital output on X30/7 department. Note the code number for further trouble- For X30/6, check the load connected to X30/6 or remove shooting directions.
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Danfoss can accept no responsibility for possible errors in catalogues, brochures and other printed material. Danfoss reserves the right to alter its products without notice. This also applies to products already on order provided that such alterations can be made without subsequential changes being necessary in specifications already agreed. All trademarks in this material are property of the respective companies.
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