Table of Contents
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MG.15.A2.22 - VLT is a registered Danfoss trademar
Section 0.0
Section 1.0
Section 2.0
Section 3.0
Section 4.0
Section 5.0
Section 6.0
Section 7.0
Section 8.0
MCD3000 Series
............................................................ 3
..................................................... 4
........................................................ 5
Installation
3.1 Mechanical Installation ..................................... 7
3.2 Ventilation ........................................................ 7
3.3 General Layout ................................................ 8
3.4 Power Wiring - Standard Connection ................ 8
3.5 Power Wiring - Bypass Connection ................... 8
3.6 Power Wiring - D.C.Brake Connection .............. 9
3.7 Control Supply Voltage .................................... 9
3.8 Control Wiring ................................................ 10
3.9 Motor Thermistors ......................................... 10
3.10 Control Circuit Examples .............................. 11
3.11 Serial Communications ................................ 13
4.1 Programming Procedure ................................ 16
4.2 Programmable Functions ............................... 17
5.1 Local Control Panel ........................................ 28
5.2 Remote Control ............................................. 29
5.3 Serial Communications .................................. 29
5.4 Restart Delay ................................................. 29
5.5 Secondary Parameter Set .............................. 29
5.6 Motor Thermal Model ..................................... 29
5.7 Pre-start Tests ............................................... 29
5.8 Operation After Power Loss ........................... 29
Specifications
6.1 General Technical Data .................................. 30
6.2 Current Ratings .............................................. 31
6.3 Power Termination Details ............................. 32
6.4 Semi-conductor Fuses ................................... 32
6.5 Dimensions/Weights ...................................... 33
7.1 Reduced Voltage Starting .............................. 34
7.2 Types Of Soft Start Control ............................ 35
7.3 MCD3000 Control Principles .......................... 35
7.4 Understanding Soft Starter Ratings ................ 36
7.5 Model Selection ............................................. 36
7.6 Typical Applications ....................................... 38
7.7 Power Factor Correction ................................ 39
7.8 Line Contactors ............................................. 39
7.9 Soft Braking ................................................... 39
8.1 Trip Codes ..................................................... 41
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Summary of Contents for Danfoss MCD3000 Series
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Page 1: Table Of Contents
7.5 Model Selection ..........36 7.6 Typical Applications ........38 7.7 Power Factor Correction ........ 39 7.8 Line Contactors ..........39 7.9 Soft Braking ........... 39 Section 8.0 Fault Procedure 8.1 Trip Codes ............. 41 MG.15.A2.22 – VLT is a registered Danfoss trademar... - Page 2 MCD3000 Series 8.2 Trip Log ............43 8.3 General Faults ..........43 8.4 Tests and Measurement Procedures ..... 44 MG.15.A2.22 – VLT is a registered Danfoss trademark...
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Page 3: Warnings
When reading this manual you will come across different symbols that require special attention. The symbols used are the following: Indicates something to be noted by the reader Indicates a general warning MG.15.A2.22 – VLT is a registered Danfoss trademar... -
Page 4: Quick Set-Up
If required, set these parameters in the same manner as described for Par 1. Motor FLC Program the MCD3000 For simple applications the MCD3000 needs only to be programmed with the FLC (Full Load Current) of the connected motor. MG.15.A2.22 – VLT is a registered Danfoss trademark... -
Page 5: Description
MCD3000 Series • Description 200 VAC ~ 690 VAC The Danfoss MCD3000 Soft Starter is an advanced The power circuit uses reverse parallel connected electronic motor starting system. It performs four main thyristors to provide full wave control on all three functions;... - Page 6 • Trip Log • High & Low Current Flags 34 & 35 • Automatic Reset 39, 40, 41 & • Current Display • Motor Temperature Display • Reset parameters to default settings MG.15.A2.22 – VLT is a registered Danfoss trademark...
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Page 7: Mechanical Installation
Consequently, the air needs to be able to move freely above and below the soft starter. Soft starters dissipate approximately 4.5 watts per amp. When installing a soft starter in a switchboard or MG.15.A2.22 – VLT is a registered Danfoss trademar... -
Page 8: General Layout
MCD3000 for connection of the bypass contactor. These bypass terminals enable the MCD3000 to continue to provide all motor protection and current monitoring functions when the bypass contactor is closed. MG.15.A2.22 – VLT is a registered Danfoss trademark... -
Page 9: Power Wiring - D.c.brake Connection
Refer Par. 38 Relay C - Function Assignment. Removing control voltage from the MCD3000 resets the motor overload The MCD3000 power modules will be protection. damaged if the D.C.Brake contactor is closed when the D.C.Brake function is not MG.15.A2.22 – VLT is a registered Danfoss trademar... -
Page 10: Control Wiring
MCD3000 checks the state of the Par. Set input. If there is an open circuit the primary parameters (Par. 1 - 9) are operative. If there is a MG.15.A2.22 – VLT is a registered Danfoss trademark... -
Page 11: Control Circuit Examples
Use the [LOCAL/REMOTE] push button to switch between local and remote modes. 2. Relay Output A must be programmed for the Line Contactor function. Refer Par. 36 Relay A - Function Assignment. MG.15.A2.22 – VLT is a registered Danfoss trademar... - Page 12 Use the [LOCAL/REMOTE] push button to switch between local and remote modes. 2. Relay Output C must be programmed for the Run function. Refer Par. 38 Relay C - Function Assignment. MG.15.A2.22 – VLT is a registered Danfoss trademark...
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Page 13: Serial Communications
The host software timeout should be set to a minimum of 250 ms. ATTENTION Slave address must be two digit, addresses less than 10 must have a leading zero (0). MG.15.A2.22 – VLT is a registered Danfoss trademar... - Page 14 1. Convert last two bytes of message from ASCII to Version RS485 protocol version binary. number. 2. Left shift 2 to last byte 4 bits. 3. Add to last byte to get binary LRC. MG.15.A2.22 – VLT is a registered Danfoss trademark...
- Page 15 Thermistor operating. Status.6 60 Hz Status.5 Unallocated Status.4 Soft stop Status.3 Positive Will be at logic 0 phase when there is a rotation negative phase rotation. Status.2 Unallocated Status.1 Unallocated Status.0 Unallocated MG.15.A2.22 – VLT is a registered Danfoss trademar...
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Page 16: Programming
Parameter Lock Load Default Parameter Settings Under Frequency Protection Delay Secondary Parameter Set adjustments Programming procedure Parameter adjustments are made using the Local Control Panel. Adjustments can only be made = factory setting MG.15.A2.22 – VLT is a registered Danfoss trademark... -
Page 17: Programmable Functions
350% (Very short ramp time settings will result in higher than necessary start current for unloaded starts. Very long ramp time settings may cause starting delays for loaded starts). = factory setting MG.15.A2.22 – VLT is a registered Danfoss trademar... - Page 18 The Motor Thermal Capacity setting can be reduced until the temperature at the end of a restart is approximately 80%. = factory setting MG.15.A2.22 – VLT is a registered Danfoss trademark...
- Page 19 Undercurrent protection is disabled during starting and 1 = Forward Rotation Only stopping. 2 = Reverse Rotation Only Function: Sets the allowable phase rotation sequence of the incoming supply. = factory setting MG.15.A2.22 – VLT is a registered Danfoss trademar...
- Page 20 Set to avoid unnecessary tripping due to temporary Description of choice: high overload situations. The standard mode is the default soft stop profile and is appropriate for most installations. In standard mode = factory setting MG.15.A2.22 – VLT is a registered Danfoss trademark...
- Page 21 Sets the D.C.Brake level as a % of maximum braking torque. Description of choice: Set as required. ATTENTION For very high inertia loads more braking torque is available by use of the 'Soft Braking' = factory setting MG.15.A2.22 – VLT is a registered Danfoss trademar...
- Page 22 The gain should be adjusted according to the following Description of choice: formula. Set this parameter if it is required that a trip should occur in the event of a failure of RS485 communications with the MCD3000. = factory setting MG.15.A2.22 – VLT is a registered Danfoss trademark...
- Page 23 See Par. 4 for Function & Description of choice. motor is running). Relay Output B can be programmed to indicate the state of the Low Current Flag. The relay output will = factory setting MG.15.A2.22 – VLT is a registered Danfoss trademar...
- Page 24 Description of choice: Set to 1 (D.C.Brake Contactor Control) only when using the D.C.Brake function and make this adjustment only after first setting Par. 18 D.C.Brake - Brake Time. = factory setting MG.15.A2.22 – VLT is a registered Danfoss trademark...
- Page 25 Description of choice: Three groups of trips can be automatically reset. Factory Diagnostic Display A Group Trip Type Value: Phase Imbalance, Phase Loss No adjustment Undercurrent, Instantaneous Overload Overcurrent, Motor Thermistor = factory setting MG.15.A2.22 – VLT is a registered Danfoss trademar...
- Page 26 Load the default factory settings. Description of choice: Description of choice: Set as required. Enter the current password number. If the password number has been lost, contact your Danfoss representative. = factory setting MG.15.A2.22 – VLT is a registered Danfoss trademark...
- Page 27 (50Hz supplies) or 55Hz (60Hz supplies) the MCD3000 will trip instantly irrespective of the delay setting. Description of choice: Set to allow continued operation during extreme but temporary under frequency conditions. = factory setting MG.15.A2.22 – VLT is a registered Danfoss trademar...
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Page 28: Operation
Remote: The MCD3000 is in remote control MCD3000, all LEDs and Numeric Display mode. The local [START],[STOP],[RESET] segments are illuminated for approximately 1 second push buttons are not operative. to test their operation. MG.15.A2.22 – VLT is a registered Danfoss trademark... -
Page 29: Remote Control
Starting, Running, Stopping & Stopped. Because it operates continuously, the motor thermal model eliminates the need for protection systems such as; Excess Start Time, Limited Starts per hour etc MG.15.A2.22 – VLT is a registered Danfoss trademar... -
Page 30: General Technical Data
................................. CISPR-11 ................................UL508 C-UL ............................CSA 22.2 No. 14 CE ..............................IEC 60947-4-2 Requires use of semi-conductor fuses; is applicable for supply voltages up to 600VAC (MCD3500 440V); excludes models MCD3600~MCD3800 MG.15.A2.22 – VLT is a registered Danfoss trademark... -
Page 31: Current Ratings
MCD3315 551A 455A MCD3400 702A 566A MCD3500 833A 661A MCD3600 1153 1049A 887A MCD3700 1403 1328A 1106A MCD3800 1570 1534A 1257A For ambient temperature or altitude conditions beyond those listed contact Danfoss. MG.15.A2.22 – VLT is a registered Danfoss trademar... -
Page 32: Power Termination Details
Power Termination Details Semiconductor Fuses Semiconductor fuses listed below are manufactured by Bussman and should be ordered directly from Bussman or their local supplier. Instruction for selection of alternate semi-conductor fuses is available from Danfoss. Model Bussman Fuse 400V Bussman Fuse 525V... -
Page 33: Dimensions/Weights
MCD3700 1000 (39.37) 560 (22.05) 315 (12.40) 978 (38.49) 500 (19.69) 105 (232) MCD3800 1000 (39.37) 560 (22.05) 315 (12.40) 978 (38.49) 500 (19.69) 105 (232) MCD3007 ~ MCD3132 MCD3185 ~ MCD3800 MG.15.A2.22 – VLT is a registered Danfoss trademar... -
Page 34: Design Guide
Below this point motor 2. Poor performance in frequent starting situations acceleration will cease and the motor/load will not because the resistance value changes as heat is reach full speed. MG.15.A2.22 – VLT is a registered Danfoss trademark... -
Page 35: Types Of Soft Start Control
This current flows for a longer period than MCD3000 soft starters control all three phases during a DOL start resulting in increased motor supplied to the motor. They are closed loop current heating. MG.15.A2.22 – VLT is a registered Danfoss trademar... -
Page 36: Understanding Soft Starter Ratings
MCD3000 model with a FLC rating greater or equal to the motor nameplate FLC. 2. AC53b: for soft starters used with bypass contactors For example, the following AC53b code describes a soft starter which, when bypassed, is capable of MG.15.A2.22 – VLT is a registered Danfoss trademark... - Page 37 The above start current requirements are = Minimum required start current typical and appropriate in most circumstances. LRC = Motor Locked Rotor Current However, start torque requirements and performance LRT = Motor Locked Rotor Torque MG.15.A2.22 – VLT is a registered Danfoss trademar...
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Page 38: Typical Applications
• Reduced starting times over quickly. • star/delta starting. Extended saw band life because • Reduced stopping times. torque shocks during start are (D.C.Brake and soft braking). eliminated. MG.15.A2.22 – VLT is a registered Danfoss trademark... -
Page 39: Power Factor Correction
Line contactors MCD3000 soft starters can operate with or without a line contactor. If installing the MCD3000 without a line MG.15.A2.22 – VLT is a registered Danfoss trademar... - Page 40 S S S S o o o o f f f f t t t t B B B B r r r r ak ak ak aki i i i n n n n g g g g S S S S c c c c h h h h e e e e m m m m a a a a t t t t i i i i c c c c MG.15.A2.22 – VLT is a registered Danfoss trademark...
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Page 41: Fault Procedure
The trip code data is made up of two parts. and overload protection of the motor is a secondary concern, the MCD3000 overload protection can be reset by temporarily removing control supply voltage. MG.15.A2.22 – VLT is a registered Danfoss trademar... - Page 42 Instantaneous Overload Trip Point has after allowing time for the heatsink been detected. to cool. • Identify and correct the cause of the instantaneous overload. • Reset the MCD3000. • Restart the motor. MG.15.A2.22 – VLT is a registered Danfoss trademark...
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Page 43: Trip Log
Incorrect programming procedure. • Starter will made. Incorrect or no control supply User programmed settings must be not operate. voltage. Ensure the correct voltage stored using the [CHANGE is applied. (Terminals A1,A2 & A3). MG.15.A2.22 – VLT is a registered Danfoss trademar... -
Page 44: Tests And Measurement Procedures
Using a volt meter measure across each input. If The following tests and measurements can be used to 24VDC is measured when the circuit is closed, the verify starter operation. switch/control is connected incorrectly or is faulty. START PERFORMANCE TEST; MG.15.A2.22 – VLT is a registered Danfoss trademark... - Page 45 MCD3000 Series MG.15.A2.22 – VLT is a registered Danfoss trademar...
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