Danfoss VLT Instruction Manual
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Danfoss VLT Instruction Manual

Hvac drive
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See also: Programming Manual
®
VLT
HVAC Drive Instruction Manual
Contents
Mechanical Dimensions
Line power wiring overview
Motor wiring overview
0-** Operation and Display
MG.11.A9.22 - VLT
®
is a registered Danfoss trademark
Contents
1-1
1-1
1-2
1-2
1-3
1-3
1-5
2-1
3-1
3-1
3-3
4-1
4-1
4-6
4-13
4-17
4-18
4-20
4-24
4-27
5-1
5-1
5-1
5-5
6-1
6-1
6-1
6-10
6-55
6-55
6-56
6-58
6-59

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Summary of Contents for Danfoss VLT

  • Page 1: Table Of Contents

    6 How to program the adjustable frequency drive How to program Quick Menu Mode Function Set-ups 6-10 Parameter list 6-55 Main Menu Structure 6-55 0-** Operation and Display 6-56 1-** Load / Motor 6-58 2-** Brakes 6-59 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 2 25-** Cascade Controller 6-84 26-** Analog I / O Option MCB 109 6-86 7 Troubleshooting Alarms and warnings Fault messages Acoustic noise or vibration 8 Specifications General Specifications Special Conditions 8-20 9 Index MG.11.A9.22 - VLT ® is a registered Danfoss trademark...

  • Page 3: Safety

    The system tests must include testing failure modes regarding the control signaling (analog and digital signals and serial communication. NOTE! Before using fire mode, contact Danfoss MG.11.A9.22 - VLT ®...

  • Page 4: Before Commencing Repair Work

    • Marine applications with more severe environmental conditions. Other applications might also affect the electrical ratings. VLT HVAC Drive Design Guide, MG.11.BX.YY Consult the relevant sections in this manual and in the for information about the electrical ratings. Installation requirements: The overall electrical safety of the adjustable frequency drive requires special installation considerations regarding: •...

  • Page 5: Avoid Unintended Start

    Be aware that there may be high voltage on the DC link even when the LEDs are turned off. 1.1.7 Installation at high altitudes (PELV) At altitudes above 6,600 feet [2 km], please contact Danfoss regarding PELV. 1.1.8 Avoid unintended Start.
  • Page 6 1 Safety ® HVAC Drive Instruction Manual 130BA491 This certificate also covers FC 102 and FC 202! MG.11.A9.22 - VLT ® is a registered Danfoss trademark...

  • Page 7: It Line Power

    1.1.11 Software version and approvals: VLT HVAC Drive VLT HVAC Drive Software version: 3.1.x This manual can be used with all VLT HVAC Drive adjustable frequency drives with software version 3.1.x. Software Version The software version number can be seen from par. 15-43 1.1.12 Disposal Instructions...
  • Page 8 1 Safety ® HVAC Drive Instruction Manual MG.11.A9.22 - VLT ® is a registered Danfoss trademark...

  • Page 9: Introduction

    Instruction ManualVLT HVAC Drive Metasys, MG.11.Gx.yy Instruction Manual VLT HVAC Drive FLN, MG.11.Zx.yy x = Revision number yy = Language code Danfoss technical literature is available in print from your local Danfoss Sales Office or online at: www.danfoss.com/BusinessAreas/DrivesSolutions/Documentations/Technical+Documentation.htm MG.11.A9.22 - VLT ®...
  • Page 10 See below for details of how to read the Type code string (T/C). Figure 2.1: This example shows an identification label. NOTE! Please have T/C (type code) number and serial number ready before contacting Danfoss. MG.11.A9.22 - VLT ®...
  • Page 11 XX: Standard software DX: No option D options 38-39 D0: DC backup Table 2.1: Type code description. VLT HVAC Drive Design Guide, MG.11.BX.YY The various options and accessories are described further in the MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 12 Pressure Pa = N/m² psi, psf, ft of water Rated Inverter Output Current Revolutions Per Minute Size Related Temperature Time s, hr Torque limit Voltage Table 2.2: Abbreviation and Standards table MG.11.A9.22 - VLT ® is a registered Danfoss trademark...

  • Page 13: Mechanical Installation

    The packaging for these enclosures contains, as shown: accessory bag(s), documentation and the unit. Depending on options fitted, there may be one or two bags and one or more booklets. MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 14 3 Mechanical installation ® HVAC Drive Instruction Manual MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 15 ® HVAC Drive Instruction Manual 3 Mechanical installation MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 16 3 Mechanical installation ® HVAC Drive Instruction Manual MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 17 For heavier drives (B4, C3, C4), use a lift. First wall-mount the 2 lower bolts, then lift the drive onto the lower bolts. Finally, fasten the drive against the wall with the 2 top bolts. MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 18 3.2.7 Panel Through Mounting A Panel Through mount kit is available for adjustable frequency drive series VLT HVAC Drive, VLT Aqua Drive and . In order to increase heatsink cooling and reduce panel depth, the adjustable frequency drive may be mounted in a through panel. Furthermore, the built- in fan can then be removed.

  • Page 19: Electrical Installation

    Short circuit protection The adjustable frequency drive must be protected against short-circuit to avoid electrical or fire hazard. Danfoss recommends using the fuses mentioned below to protect service personnel or other equipment in case of an internal failure in the unit. The adjustable frequency drive provides full short circuit protection in case of a short circuit in the motor output.
  • Page 20 Non-UL compliance If UL/cUL is not to be complied with, Danfoss recommends using the fuses mentioned in the table below, which will ensure compliance with EN50178. In case of malfunction, not following the recommendation may result in unnecessary damage to the adjustable frequency drive.
  • Page 21 KLN-R125 A2K-125R A2K-125R KTN-R125 JKS-150 JJN-125 2028220-125 KLN-R125 A2K-125R A2K-125R FWX-150 2028220-150 L25S-150 A25X-150 A25X-150 FWX-200 2028220-200 L25S-200 A25X-200 A25X-200 FWX-250 2028220-250 L25S-250 A25X-250 A25X-250 Table 4.9: UL fuses 200–240 V MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 22 JFHR2 P110 170M3017 2061032.315 6.6URD30D08A0315 P132 170M3018 2061032.350 6.6URD30D08A0350 P160 170M4011 2061032.350 6.6URD30D08A0350 P200 170M4012 2061032.400 6.6URD30D08A0400 P250 170M4014 2061032.500 6.6URD30D08A0500 P315 170M5011 2062032.550 6.6URD32D08A0550 Table 4.12: D enclosures, 525–600 V MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 23 Do not connect 400 V adjustable frequency drives with RFI filters to line power supplies with a voltage between phase and ground of more than 440 V. For IT line power and delta ground (grounded leg), AC line voltage may exceed 440 V between phase and ground. MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 24 4 Electrical installation ® HVAC Drive Instruction Manual MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 25 Figure 4.3: When mounting cables, first mount and tighten ground cable. The ground connection cable cross-section must be at least 0.016 in [10 mm ] or 2 rated line power wires terminated separately according to EN 50178/IEC 61800-5-1 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 26 HVAC Drive Instruction Manual Figure 4.4: Then mount line power plug and tighten wires. Figure 4.5: Finally, tighten support bracket on line power wires. NOTE! With single phase A3 use L1 and L2 terminals. MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 27 Figure 4.6: How to connect to line power and grounding without a line power disconnect switch. Note that a cable clamp is used. Figure 4.7: How to connect to line power and grounding with a line power disconnect switch. NOTE! With single phase A5 use L1 and L2 terminals. MG.11.A9.22 - VLT ® is a registered Danfoss trademark...

  • Page 28: Specifications

    B3 with RFI. NOTE! With single phase B1 use L1 and L2 terminals. NOTE! For correct cable dimensions, please see the section General Specifications at the back of this manual. 4-10 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 29 Connect the motor cable shield/armor to both the decoupling plate of the adjustable frequency drive and to the metal of the motor. (The same applies to both ends of the metal conduit if used instead of a shield.) 4-11 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 30 6 cables out of motor, Delta-connected 6 cables out of motor, Star-connected U2, V2, W2 to be interconnected separately (optional terminal block) Ground connection Table 4.16: 3 and 6 cable motor connection. 4-12 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 31 ® HVAC Drive Instruction Manual 4 Electrical installation 4-13 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 32 Figure 4.16: First terminate the motor ground, then place motor U, V and W wires in the plug and tighten them. Figure 4.17: Mount cable clamp to ensure 360 degree connection between chassis and shield; ensure that the outer insulation of the motor cable is removed under the clamp. 4-14 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 33 Figure 4.19: First terminate the motor ground, then place motor U, V and W wires in the terminal and tighten them. Please ensure that the outer insulation of the motor cable is removed under the EMC clamp. 4-15 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 34 Figure 4.22: First terminate the motor ground, then place motor U, V and W wires in the terminal and tighten them. Please ensure that the outer insulation of the motor cable is removed under the EMC clamp. 4-16 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...

  • Page 35: Dc Bus Connection

    How to program the adjustable frequency drive. 4.1.19 DC bus connection The DC bus terminal is used for DC back-up, with the intermediate circuit being supplied from an external source. Terminal numbers used: 88, 89 4-17 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...

  • Page 36: Brake Connection Option

    NOTE! Dynamic brake calls for extra equipment and safety considerations. For further information, please contact Danfoss. Use cable clamps to connect the shield to the metal cabinet of the adjustable frequency drive and to the decoupling plate of the brake resistor.
  • Page 37 Place the brake resistor in an environment free of fire risk and ensure that no external objects can fall into the brake resistor through ventilation slots. Do not cover ventilation slots and grids. 4-19 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...

  • Page 38: Relay Connection

    To set relay output, see par. group 5-4* Relays. 01 - 02 make (normally open) 01 - 03 break (normally closed) 04 - 05 make (normally open) 04 - 06 break (normally closed) 4-20 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 39 (A5, B1 and B2 enclosures). Figure 4.33: Terminals for relay connection (C1 and C2 enclosures). The relay connections are shown in the cut-out with relay plugs (from the accessory bag) fitted. 4-21 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 40 Figure 4.34: Terminals for relay connections for B3. Only one knock-out is fitted from the factory. Figure 4.35: Terminals for relay connections for B4. Figure 4.36: Terminals for relay connections for C3 and C4. Located in the upper right corner of the adjustable frequency drive. 4-22 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 41 Relay 1 and relay 2 are programmed in par.5-40 Function Relay On Delay, Relay Off Delay, Relay par. 5-41 , and par. 5-42 Additional relay outputs by using option module MCB 105. 4-23 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...

  • Page 42: How To Test Motor And Direction Of Rotation

    Step 3: Insert the other end in terminal 12 or 13. (Note: For units with the Safe Stop function, the existing jumper between terminal 12 and 37 should not be removed for the unit to be able to run!) 4-24 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 43 Remove line power from the adjustable frequency drive before changing motor wires. Figure 4.43: Step 7: To move the cursor, use the left ◄ and right ► arrow buttons. This enables speed changes by larger increments. 4-25 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 44 Remove front-cover to access control terminals. When replacing the front cover, ensure proper fastening by applying a torque of 2 Nm. Figure 4.47: Access to control terminals for A5, B1, B2, C1 and C2 enclosures 4-26 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...

  • Page 45: Electrical Installation And Control Cables

    USB connection. Figure 4.48: Control terminals (all enclosures) 4.1.26 Electrical Installation and Control Cables Figure 4.49: Diagram showing all electrical terminals. (Terminal 37 present for units with safe stop function only.) 4-27 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 46 Please note that the switches may be covered by an option, if so equip- ped. Default setting: S201 (AI 53) = OFF (voltage input) S202 (AI 54) = OFF (voltage input) S801 (Bus termination) = OFF 4-28 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 47 Before power-up, ensure that connected equipment is ready for use. Step 1. Locate motor nameplate NOTE! The motor is either star- (Y) or delta-connected (Δ). This information is located on the motor nameplate data. 4-29 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 48 Press the [OFF] key - the adjustable frequency drive enters into alarm mode and the display shows that the AMA was terminated by the user. Successful AMA The display shows “Press [OK] to finish AMA”. Press the [OK] key to exit the AMA state. 4-30 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 49 "Report Value” in the [Alarm Log] shows the last measuring sequence carried out by the AMA, before the adjustable frequency drive entered alarm mode. This number, along with the description of the alarm, will assist in troubleshooting. If contacting Danfoss Service, make sure to mention number and alarm description.
  • Page 50 4 Electrical installation ® HVAC Drive Instruction Manual 4-32 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...

  • Page 51: How To Operate The Adjustable Frequency Drive

    If an alarm occurs, the NLCP automatically switches to status mode. A number of alarms can be displayed. Quick Set-up or Main Menu Mode: Display parameters and parameter Figure 5.2: Status display example settings. Figure 5.3: Alarm display example MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 52 The following control signals will still be active when [Hand on] is activated: • [Hand on] - [Off] - [Auto on] • Reset • Coasting stop inverse • Reversing • Set-up select lsb - Set-up select msb MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 53 To control or program the adjustable frequency drive from a PC, install the PC-based Configuration Tool MCT 10. Design Guide, chapter How to The PC is connected via a standard (host/device) USB cable, or via the RS-485 interface as shown in the VLT HVAC Drive Install > Installation of misc. connections NOTE! The USB connection is galvanically isolated from the supply voltage (PELV) and other high-voltage terminals.
  • Page 54 PC-based Configuration Tool MCT 10 All adjustable frequency drives are equipped with a serial communication port. Danfoss provides a PC tool for communication between the PC and the adjustable frequency drive, PC-based Configuration Tool MCT 10. Please check the section on Available Literature for detailed information on this tool.

  • Page 55: Tips And Tricks

    Smart Logic Controller Set-up Ordering number: Please order the CD containing the MCT 10 Set-up software using code number 130B1000. MCT 10 can also be downloaded from the Danfoss Internet: WWW.DANFOSS.COM, Business Area: Motion Controls 5.1.6 Tips and tricks For the majority of HVAC applications, the Quick Menu, Quick Set-up and Function Set-up provide the simplest and quickest access to all the typical parameters required.
  • Page 56 Please note that the first start-up takes a few more seconds. Press [Reset] NOTE! My Personal Menu Parameters selected in par. 0-25 will remain present with the default factory setting. Manual initialization MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 57 2b. Press [Menu] while the LCP 101, Numerical Display is pow- ering up. 3. Release the keys after 5 s. 4. The adjustable frequency drive is now programmed according to default settings. MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 58 5 How to operate the adjustable frequency drive ® HVAC Drive Instruction Manual MG.11.A9.22 - VLT ® is a registered Danfoss trademark...

  • Page 59: How To Program The Adjustable Frequency Drive

    Display Line 3 Large Only display parameters selected in par.0-20 and par. 0-24 can be viewed. It is possible to store up to 120 samples in the memory for later reference. MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 60 Efficient Parameter Set-up for VLT HVAC Drive Applications: The parameters can easily be set up for the vast majority of the VLT HVAC Drive applications only by using the [Quick Set-up] option. After pressing [Quick Menu], the different choices in the quick menu are listed. See also illustration 6.1 below and tables Q3-1 to Q3-4 in the following Function Set-ups section.
  • Page 61 , is an array, where one may choose between Relay1 [0] or Relay2 [1]. The standard setting is Relay1 [0] with the default choice Alarm [9]. See the parameter description later in this chapter under Function Set-up parameters. For detailed information about settings and programming, see the VLT HVAC Drive Programming Guide, MG.11.CX.YY x=version number y=language NOTE! Terminal 27 Digital Input If [No Operation] is selected in par.
  • Page 62 Part of Language package 1 [48] Polski Part of Language package 1 [49] Russian Part of Language package 1 [50] Thai Part of Language package 2 [51] Bahasa Indonesia Part of Language package 2 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 63 Enter the nominal motor current value from the motor nameplate data. This data is used for cal- culating motor torque, motor thermal protection, etc. NOTE! This parameter cannot be adjusted while the motor is running. 1-25 Motor Nominal Speed Range: Function: 1420. RPM* [100 - 60000 RPM] MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 64 Enter the minimum limit for motor speed. The Motor Speed Low Limit can be set to correspond to the manufacturer’s recommended minimum motor speed. The Motor Speed Low Limit must not exceed the setting in par.4-13 Motor Speed High Limit [RPM] MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 65 See also par. 3-80 Jog Ramp Time 5-12 Terminal 27 Digital Input Option: Function: Pulse input [0] * No operation Same options and functions as par. 5-1*, except for MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 66 Out of ref range [41] Below reference, low [42] Above ref, high [45] Bus ctrl. [46] Bus ctrl, 1 if timeout [47] Bus ctrl, 0 if timeout [60] Comparator 0 [61] Comparator 1 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 67 Broken Belt [195] Bypass Valve Control [196] Fire Mode Active [197] Fire Mode Was Active [198] Bypass Mode Active [211] Cascade Pump 1 [212] Cascade Pump 2 [213] Cascade Pump 3 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...

  • Page 68: Function Set-Ups

    6.1.3 Function Set-ups The Function set-up provides quick and easy access to all parameters required for the majority of VLT HVAC Drive applications including most VAV and CAV supply and return fans, cooling tower fans, primary, secondary and condenser water pumps and other pump, fan and compressor applications.
  • Page 69 6 How to program the adjustable frequency ® HVAC Drive Instruction Manual drive Figure 6.8: Step 7: Use the up/down navigation keys to navigate between the different choices. Press [OK]. 6-11 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 70 Setpoint 1 par.20-21 Setpoint 2 par.20-22 PID Normal/ Inverse Control par.20-81 par. 20-82 PID Start Speed [RPM] PID Start Speed [Hz] par. 20-83 PID Proportional Gain par.20-93 PID Integral Time par.20-94 6-12 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 71 Flow at Rated Speed par. 22-90 Torque Characteristics par.1-03 par.1-73 Flying Start VLT HVAC Drive Programming Guide See also for a detailed description of the Function Set-ups parameter groups. 0-20 Display Line 1.1 Small Option: Function: Select a variable for display in line 1, left position.
  • Page 72 Maximum current of the adjustable frequency drive [1638] SL Controller State [1639] Control Card Temp. Temperature of the control card. [1650] External Reference Sum of the external reference as a percentage, i.e., the sum of analog/pulse/bus. 6-14 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 73 One or more status conditions in a Hex code (used for serial communications) [1695] Ext. Status Word 2 One or more status conditions in a Hex code (used for serial communications) 6-15 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 74 HS Temp. (PC4) [9924] HS Temp. (PC5) [9925] HS Temp. (PC6) [9926] HS Temp. (PC7) [9927] HS Temp. (PC8) NOTE! Consult the VLT HVAC Drive Programming Guide, MG.11.CX.YY for detailed information. 6-16 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 75 Torque [%] [1626] [1627] [1630] DC Link Voltage [1632] Brake Energy /s [1633] Brake Energy /2 min [1634] Heatsink Temp. [1635] Inverter Thermal [1636] Inv. Nom. Current [1637] Inv. Max. Current 6-17 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 76 [1695] Ext. Status Word 2 [1696] Maintenance Word [1830] Analog Input X42/1 [1831] Analog Input X42/3 [1832] Analog Input X42/5 [1833] Analog Out X42/7 [V] [1834] Analog Out X42/9 [V] 6-18 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 77 Display Line 1.1 Small 0-24 Display Line 3 Large Option: Function: [1602] * Reference % Select a variable for display in line 3. The options are the same as listed for par. 0-20. 6-19 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 78 Sets the date and time of the internal clock. The format to be used is set in par.0-71 and par.0-72 Time Format 0-71 Date Format Option: Function: Sets the date format to be used in the LCP. [0] * YYYY-MM-DD [1] * DD-MM-YYYY MM/DD/YYYY 6-20 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 79 NOTE! This parameter cannot be changed when the motor is running. NOTE! When set for closed-loop, the commands reversing and start reversing will not reverse the direction of the motor. 6-21 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 80 “Press [OK] to finish AMA”. After pressing the [OK] key, the adjustable frequency drive is ready for operation. Note: • For the best adaptation of the adjustable frequency drive, run AMA on a cold motor • AMA cannot be performed while the motor is running. 6-22 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 81 1-81 [0] * Coast Leaves motor in free mode. DC Hold/Motor Preheat Energizes motor with a DC holding current (see par.2-00 DC Hold/Preheat Current 6-23 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 82 ETR (Electronic Thermal Relay) functions 1-4 will calculate the load when the set-up where they were selected is active. For example, ETR-3 starts calculating when Set-up 3 is selected. For the North American market: The ETR functions provide class 20 motor overload protection in accordance with NEC. 6-24 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 83 6 How to program the adjustable frequency ® HVAC Drive Instruction Manual drive NOTE! Danfoss recommends using 24 V DC as the thermistor supply voltage. 1-93 Thermistor Source Option: Function: Select the input to which the thermistor (PTC sensor) should be connected. An analog input option...
  • Page 84 20-12 ence/Feedback Unit backUnit* , respectively. NOTE! If operating with par. 1-00, Configuration Mode set for Closed-loop [3], par. 20-14, Maximum Reference/Feedb. must be used. 6-26 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 85 Analog input X30/11 [22] Analog input X30/12 [23] Analog Input X42/1 [24] Analog Input X42/3 [25] Analog Input X42/5 [30] Ext. Closed-loop 1 [31] Ext. Closed-loop 2 [32] Ext. Closed-loop 3 6-27 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 86 Motor Speed High Limit [RPM] in par.4-13 Warning Speed High Motor Speed High Limit If a different value is needed in par.4-53 , it must be set after programming of par.4-13 [RPM] 6-28 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 87 Option: Function: [0] * Input Defines terminal 29 as a digital input. Output Defines terminal 29 as a digital output. This parameter cannot be adjusted while the motor is running. 6-29 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 88 Resets adjustable frequency drive after a TRIP/ALARM. Not all alarms can be reset. Coast inverse Leaves motor in free mode. Logic ‘0’ => coasting stop. (Default Digital input 27): Coasting stop, inverted input (NC). 6-30 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 89 Enables a choice between one of the eight preset references according to the table below. Preset ref. bit Preset ref. 0 Preset ref. 1 Preset ref. 2 Preset ref. 3 Preset ref. 4 Preset ref. 5 Preset ref. 6 Preset ref. 7 6-31 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 90 Uses the input as an INCREASE signal to the Digital Potentiometer function described in parameter group 3-9* [56] DigiPot Decrease Uses the input as a DECREASE signal to the Digital Potentiometer function described in parameter group 3-9* 6-32 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 91 Pulse input [0] * No operation Same options and functions as par. 5-1*, except for 5-13 Terminal 29 Digital Input Option: Function: [14] * Same options and functions as par. 5-1*. 6-33 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 92 Reset Counter B [66] Sleep Mode [78] Reset Preventive Maintenance Word [120] Lead Pump Start [121] Lead Pump Alternation [130] Pump 1 Interlock [131] Pump 2 Interlock [132] Pump 3 Interlock 6-34 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 93 Brake fault (IGBT) [35] External Interlock [36] Control word bit 11 [37] Control word bit 12 [40] Out of ref range [41] Below reference, low [42] Above ref, high [45] Bus ctrl. 6-35 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 94 Broken Belt [195] Bypass Valve Control [196] Fire Mode Active [197] Fire Mode Was Active [198] Bypass Mode Active [211] Cascade Pump 1 [212] Cascade Pump 2 [213] Cascade Pump 3 6-36 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 95 [3] overruled to jog speed • [4] overruled to max. speed • [5] overruled to stop with subsequent trip [0] * Freeze output Stop Jogging Max. speed Stop and trip 6-37 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 96 [par. 6-20 - 10.00 V] Enter the high voltage value. This analog input scaling value should correspond to the high refer- Terminal 54 High Ref./Feedb. Value ence/feedback value set in par.6-25 6-38 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 97 Ext. Closed-loop 1 : 0–100%, (0–20 mA) [114] Ext. Closed-loop 2 : 0–100%, (0–20 mA) [115] Ext. Closed-loop 3 : 0–100%, (0–20 mA) [130] Output freq. 4-20mA : 0–100 Hz 6-39 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 98 Scale for the minimum output (0 or 4 mA) of the analog signal at terminal 42. Terminal Set the value to be the percentage of the full range of the variable selected in par.6-50 42 Output 6-40 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 99 Output signal 0 or 4 mA is needed at 0 Hz (0% of range) - set par.6-51 to 0% Terminal 42 Output Max Scale Output signal 20 mA is needed at 50 Hz (50% of range) - set par.6-52 to 50% 6-41 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 100 0% Terminal 42 Output Max Scale Output signal 10 mA is needed at Max ref (100% of range) - set par.6-52 to 200% (20 mA / 10 mA x 100%=200%). 6-42 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 101 Analog input X30/11 and Analog input X30/12 refer to inputs on the optional general purpose I/O board. No function Analog input 53 [2] * Analog input 54 Pulse input 29 Pulse input 33 Analog input X30/11 6-43 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 102 Pulse input 33 Analog input X30/11 Analog input X30/12 Analog Input X42/1 [10] Analog Input X42/3 [11] Analog Input X42/5 [100] Bus feedback 1 [101] Bus feedback 2 [102] Bus feedback 3 6-44 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 103 , par.20-03 , or par.20-06 The sum of Setpoint 1 and any other references that are enabled (see par. group 3-1*) will be used as the PID controller’s setpoint reference. 6-45 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 104 PID controller will use the feedback/ setpoint pair in which the difference between the feedback and the setpoint reference is the least. 6-46 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 105 Example 1: Multi-zone, single setpoint In an office building, a VAV (variable air volume) VLT HVAC Drive system must ensure a minimum pressure at selected VAV boxes. Due to the varying pressure losses in each duct, the pressure at each VAV box cannot be assumed to be the same. The minimum pressure required is the same for all VAV Feedback Function boxes.
  • Page 106 The proportional band (error causing output to change from 0%–100%) can be calculated by means of the formula: × ( Max Reference Proportional Gain NOTE! Maximum Reference/Feedb. Always set the desired for par. 20-14 before setting the values for the PID controller in par. group 20-9*. 6-48 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 107 Messages in the Local Control Panel display (if mounted) and/or signal via a relay or a digital output. Alarm The adjustable frequency drive trips and the motor stays stopped until reset. 6-49 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 108 The timer will start counting following a normal start command (Start/Jog/Freeze). The timer will be overridden by a Coast (Inverse) or an External Interlock command. 6-50 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 109 PI(D) loops and an analog output, it would then modulate that valve to maintain a higher supply air temperature). The SLC can often replace the need for other external control equipment. Table 6.2: Parameter Groups 6-51 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 110 All digital input/output and analog input/output terminals are multifunctional. All terminals have factory default functions suitable for the majority of HVAC applications but if other special functions are required, they must be programmed as explained in parameter group 5 or 6. 6-52 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 111 The up key increases the value, and the down key decreases the value. Place the cursor on the value to be saved and press [OK]. Figure 6.10: Display example. 6-53 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 112 [OK]. Change the value by using the up/down keys. Press [OK] to accept the new setting. Press [Cancel] to abort. Press [Back] to leave the parameter. 6-54 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...

  • Page 113: Parameter List

    Parameters for the adjustable frequency drive are grouped into various parameter groups for easy selection of the correct parameters for optimized operation of the adjustable frequency drive. The vast majority of VLT HVAC Drive applications can be programmed using the Quick Menu button and selecting the parameters under Quick Set-up and Function Set-ups.
  • Page 114 6 How to program the adjustable frequency drive ® HVAC Drive Instruction Manual 6-56 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
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  • Page 125 6 How to program the adjustable frequency ® HVAC Drive Instruction Manual drive 6-67 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 126 6 How to program the adjustable frequency drive ® HVAC Drive Instruction Manual 6-68 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
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  • Page 128 6 How to program the adjustable frequency drive ® HVAC Drive Instruction Manual 6-70 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
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  • Page 130 6 How to program the adjustable frequency drive ® HVAC Drive Instruction Manual 6-72 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
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  • Page 138 6 How to program the adjustable frequency drive ® HVAC Drive Instruction Manual 6-80 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
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  • Page 144 6 How to program the adjustable frequency drive ® HVAC Drive Instruction Manual 6-86 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...

  • Page 145: Troubleshooting

    By resetting automatically using the [Auto Reset] function, which is a default setting for the adjustable frequency drive, see par. 14-20 Reset Mode VLT HVAC Drive Programming Guide, MG.11.Cx.yy NOTE! After a manual reset using the [RESET] button on the LCP, the [AUTO ON] button must be pressed to restart the motor.
  • Page 146 Output Frequency at Maximum Limit Voltage Limit Control Board Overtemperature Heatsink Temperature Low Option Configuration Has Changed Safe Stop Activated Pwr. card temp. Illegal FC configuration Table 7.1: Alarm/Warning code list 1/2 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 147 The alarm words, warning words and extended status words can be read out for diagnosis via serial bus or optional serial communication bus. See also Alarm Word Warning Word Ext. Status Word par. 16-90 , par. 16-92 and par. 16-94 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...

  • Page 148: Fault Messages

    A fitted option is not handled by the present control board (hardware or justable frequency drive with a tolerance of ± 5%. The correspond- ing AC line voltage is the intermediate circuit voltage (DC link) software). divided by 1.35. MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 149 Brake Power Monitoring , the adjustable frequency drive cuts ALARM 38, Internal fault: out and issues this alarm, when the dissipated braking energy is higher Contact your local Danfoss supplier. than 100%. ALARM 39, Heatsink Sensor: WARNING/ALARM 27, Brake chopper fault: No feedback from the heatsink sensor.
  • Page 150 The output frequency is limited by the value set in par. 4-19 Max Output Frequency WARNING 64, Voltage Limit: The load and speed combination demands a motor voltage higher than the actual DC-link voltage. MG.11.A9.22 - VLT ® is a registered Danfoss trademark...

  • Page 151: Acoustic Noise Or Vibration

    • Speed Bypass, parameters 4-6* • Overmodulation, parameter 14-03 set to off • Switching pattern and frequency parameters 14-0* • Resonance Dampening, parameter 1-64 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 152 7 Troubleshooting ® HVAC Drive Instruction Manual MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 153 Weight enclosure IP20 [kg] Weight enclosure IP21 [kg] Weight enclosure IP55 [kg] 13.5 13.5 13.5 13.5 13.5 Weight enclosure IP66 [kg] 13.5 13.5 13.5 13.5 13.5 0.96 0.96 0.96 0.96 0.96 Efficiency MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 154 8 Specifications ® HVAC Drive Instruction Manual MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 155 ® HVAC Drive Instruction Manual 8 Specifications MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 156 8 Specifications ® HVAC Drive Instruction Manual MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 157 IP21, IP 54 [kg] Weight, enclosure IP00 [kg] Efficiency 0.98 Output frequency 0–800 Hz Heatsink overtemp. 185°F [85°C] 194°F [90°C] 221°F [105°C] 221°F [105°C] 239°F [115°C] trip Power card ambient 140°F [60°C] trip MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 158 [W] 460 V Weight, enclosure IP21, IP 54 [kg] Weight, enclosure IP00 [kg] Efficiency 0.98 Output frequency 0–600 Hz Heatsink overtemp. trip 203°F [95°C] Power card ambient trip 154°F [68°C] MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 159 1246/ 1541 1246/ 1541 54 [kg] Weight Rectifier Module [kg] Weight Inverter Module [kg] Efficiency 0.98 Output frequency 0–600 Hz Heatsink overtemp. 203°F [95°C] trip Power card ambient 154°F [68°C] trip MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 160 8 Specifications ® HVAC Drive Instruction Manual MG.11.A9.22 - VLT ® is a registered Danfoss trademark...

  • Page 161: Kw]

    Weight, enclosure IP21, IP 54 [kg] Weight, enclosure IP00 [kg] 0.97 0.97 0.98 0.98 0.98 Efficiency Output frequency 0–600 Hz Heatsink overtemp. trip 185°F [85°C] Power card ambient 140°F [60°C] trip MG.11.A9.22 - VLT ® is a registered Danfoss trademark...

  • Page 162: Output Current

    Enclosure IP21, IP 54 [kg] Weight, Enclosure IP00 [kg] 0.98 Efficiency Output frequency 0–600 Hz Heatsink overtemp. trip 185°F [85°C] 194°F [90°C] 230°F [110°C] 230°F [110°C] Power card ambient trip 140°F [60°C] 8-10 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...

  • Page 163: Enclosure Ip21

    IP00 [kg] Efficiency 0.98 Output frequency 0–600 Hz 0–500 Hz 0–500 Hz Heatsink overtemp. trip 230°F [110°C] 230°F [110°C] 185°F [85°C] Power card ambient trip 140°F [60°C] 140°F [60°C] 154°F [68°C] 8-11 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...

  • Page 164: Enclosure Ip00

    , 690 V Weight, enclosure IP21, IP 54 [kg] Weight, enclosure IP00 [kg] Efficiency 0.98 Output frequency 0–500 Hz Heatsink overtemp. trip 185°F [85°C] Power card ambient trip 154°F [68°C] 8-12 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 165 4) The typical power loss is at nominal load conditions and expected to be within +/-15% (tolerance relates to variety in voltage and cable conditions). Values are based on a typical motor efficiency (eff2/eff3 border line). Motors with lower efficiency will also add to the power loss 8-13 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 166 (Though typical only 4W extra for a fully loaded control card, or options for slot A or slot B, each). Although measurements are made with state of the art equipment, some measurement inaccuracy must be allowed for (+/-5%). 8-14 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 167 *Percentage relates to the adjustable frequency drive's nominal torque. Cable lengths and cross-sections: Max. motor cable length, shielded/armored VLT HVAC Drive: 492 ft [150 m] Max. motor cable length, unshielded/unarmored VLT HVAC Drive: 984 ft [300 m] Max. cross-section to motor, line power, load sharing and brake * Maximum cross-section to control terminals, rigid wire 0.0023 in...
  • Page 168 68 (P,TX+, RX+), 69 (N,TX-, RX-) Terminal number 61 Common for terminals 68 and 69 The RS-485 serial communication circuit is functionally separated from other central circuits and galvanically isolated from the supply voltage (PELV). 8-16 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 169 System response time (terminals 18, 19, 27, 29, 32, 33) Speed control range (open-loop) 1:100 of synchronous speed Speed accuracy (open-loop) 30–4000 rpm: Maximum error of ±8 rpm All control characteristics are based on a 4-pole asynchronous motor 8-17 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...

  • Page 170: Special Conditions

    The adjustable frequency drive is protected against short-circuits on motor terminals U, V, W. • If a line phase is missing, the adjustable frequency drive trips or issues a warning (depending on the load). 8-18 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 171 Monitoring of the intermediate circuit voltage ensures that the adjustable frequency drive trips if the intermediate circuit voltage is too low or too high. • The adjustable frequency drive is protected against ground faults on motor terminals U, V, W. 8-19 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...
  • Page 172 With a typical full load current of EFF 2 motors, full output shaft power can be maintained up to 122°F [50°C]. For more specific data and/or derating information for other motors or conditions, please contact Danfoss. 8.2.3 Automatic adaptations to ensure performance The adjustable frequency drive constantly checks for critical internal temperature levels, load current, high voltage on the intermediate circuit and low motor speeds.
  • Page 173 In the graphs shown below, the typical VT curve is below the maximum torque with de-rating and maximum torque with forced cooling at all speeds. Maximum Load for a Standard Motor at 104°F [40°C] driven by an adjustable frequency drive type VLT FCxxx Legend: ─...
  • Page 174 8 Specifications ® HVAC Drive Instruction Manual 8-22 MG.11.A9.22 - VLT ® is a registered Danfoss trademark...

  • Page 175: Index

    8-17 Control Card, 24 V Dc Output 8-17 Control Card, Rs-485 Serial Communication: 8-16 Control Card, Usb Serial Communication: 8-18 Control Characteristics 8-17 Control Terminals 4-27 Cooling 6-24, 8-21 Cooling Conditions ® MG.11.A9.22 - VLT is a registered Danfoss trademark...
  • Page 176 Function Relay 5-40 6-8, 6-35 Function Set-ups 6-10 Fuses General Specifications 8-15 General Warning. Glcp Ground Leakage Current Grounding And It Line Power High Power Series Line Power And Motor Connections ® MG.11.A9.22 - VLT is a registered Danfoss trademark...
  • Page 177 Motor Speed Direction 4-10 6-28 [Motor Speed High Limit Hz] 4-14 [Motor Speed High Limit Rpm] 4-13 [Motor Speed Low Limit Hz] 4-12 [Motor Speed Low Limit Rpm] 4-11 Motor Thermal Protection 1-90 6-24 ® MG.11.A9.22 - VLT is a registered Danfoss trademark...
  • Page 178 Rs-485 Bus Connection Safety Requirements For Mechanical Installation Semi-auto Bypass Set-up 4-64 6-29 Serial Communication 8-18 Set Date And Time 0-70 6-20 Setpoint 1 20-21 6-48 Setpoint 2 20-22 6-48 Shielded/armored. 4-28 ® MG.11.A9.22 - VLT is a registered Danfoss trademark...
  • Page 179 Variable (quadratic) Torque Applications (vt) 8-21 Voltage Level 8-15 [Wake-up Speed Rpm] 22-42 6-50 Warning Feedback High 4-57 6-29 Warning Feedback Low 4-56 6-29 Warning Speed High 4-53 6-28 Wiring Example And Testing 4-17 ® MG.11.A9.22 - VLT is a registered Danfoss trademark...

Table of Contents