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VARIABLE FREQUENCY DRIVES & MOTOR CONTROLLERS

Non-UW-Madison users contact: Vendor Representative

36 months
The warranty shall be for a period of 24 months from the date of project Substantial Completion. Further, the warranty shall include all parts, labor, travel time, administrative costs, overhead, travel expenses, technical support and any and all other costs to provide the warranty service

EXCEPTIONS:

• If Lon Serial Communications is required, add $150.00.
• Soft Starter is NOT included in 50HP and above pricing.

LOT II Variable Frequency Drives:
* Variable Torque
* Input-Semiconductor 3 phase fuses
* NEMA 1 enclosure or can quote at NEMA 12 option
* UL Listed
* Fully digital PWM design
* 4-20ma/0-10 VDC follower
* Separately adj. Accel/Decel-Min/Max control
* Input AC line reactor of 3%
* Auto restart
* Extensive front panel digital indication
* 95% efficiency @ 100% speed
* 3 Phase ground fault protection
* Includes minimum 2 contactor bypass
* DC link reactor
* Startup, training and manuals
* Line voltage disconnect
* METASYS “N2” direct capable / JCI Certified as METASYS Compatible
* Drives must be rated for full load & current (100%) continuously at 40 degrees C

CHUDECKE  & ASSOCIATES LLC agrees to provide:
* Electric motor overload.                                                                                                       
* Class 20 115% continuous                                                                                             
* Shorted SCR detection.                                                                                                          
* Phase loss and phase reversal protection.                                                                               
* Unit withstanding rating (min 45KA).                                                                                         
* heavy duty definite purpose contactor-IEC/ACI rating.                                                              
* Nema 4 enclosure.                                                                                                                  
* Starting torque 0-100%.                                                                                                           
* UL/CSA approved solid state started.                                                                                      
* 120 volt for 3 wire control and stop/start operation.                                                                  
* Control input 120/240 volt or dry contact (2 or 3 wire control.                                                    
* Heavy duty bypass contactor.                                                                                                              
* Variable torque.                                                                                                                      
* Input-Semiconductor 3 phase fuses.                                                                                     
* Quoting NEMA 1 option.                                                                                                      
* UL Listed.                                                                                                                            
* Fully Digital PWM design.                                                                                                    
* 4-20ma/0-10 VDC follower.                                                                                                   
* Separately adj. Accel/Decel-Min/Max control.                                                                        
* Auto restart.                                                                                                                        
* Extensive front panel digital indication.                                                                                 
* 95% efficiency @ 100% speed.                                                                                            
* 3 phase ground fault protection.                                                                                           
* Minimum 2 contractor bypass.                                                                                              
* DC link reactor.                                                                                                                    
* Startup, training and manuals.                                                                                              
* Line voltage disconnect.                                                                                                      
* METASYS “N2” direct capable/JCI Certified as METASYS Compatible.                                  
* Drives rated for full load & current (100%) continuously at 40 degrees C.                               

“D” F.O.B. DESTINATION, FREIGHT PREPAID AND ALLOWED
“V” F.O.B. SERVICE/MAINTENANCE
Additional charges for start-up for locations other than UW–Madison as well as maintenance.

36 months
The warranty shall be for a period of 24 months from the date of project Substantial Completion. Further, the warranty shall include all parts, labor, travel time, administrative costs, overhead, travel expenses, technical support and any and all other costs to provide the warranty service.

 
All non-listed, related items from manufacturer's catalog or product list are available at 20% discount.  The current price list is titled p19701r01/12 and is dated 2012 and/or numbered 8800.

     LOT I –Motor Controller: 

* Universal voltage 100-600 vac (no adjustments)
* Electric motor overload

     Class 10        115% continuous

     Class 20        115% continuous

     Class 30        115% continuous
* 500% FLA for 30 seconds
* Shorted SCR detection
* Phase loss and phase reversal protection
* Unit withstanding rating (min 45KA)
* Heavy duty definite purpose contactor-IEC/ACI rating
* Nema 4 enclosure
* Starting torque 0-100%
* UL/CSA approved solid state started
* Unlimited starts/hour with no derating
* 120 volt for 3 wire control and stop/start operation
* Control input 120/240 volt or dry contact (2 or 3 wire control)
* Heavy duty bypass contactor

GRAYBAR ELECTRIC COMPANY agrees to provide:
* Universal voltage 100-600 vac (no adjustments)  
       * Class 10 115% continuous                                                                                             
* Shorted SCR detection.                                                                                                          
* Phase loss and phase reversal protection.                                                                               
* Unit withstanding rating (min 45KA).                                                                                         
* heavy duty definite purpose contactor-IEC/ACI rating.                                                              
* Starting torque 0-100%.                                                                                                           
* UL/CSA approved solid state started.                                                                                      
* Unlimited starts/hour with no derating.                                                                                      
* 120 volt for 3 wire control and stop/start operation.                                                                  
* Control input 120/240 volt or dry contact (2 or 3 wire control.                                                     
* 7 day/24 hour service.                                                                                                             
* Heavy duty bypass contactor.                                                                                                              
* Variable torque.                                                                                                                      
* Input-Semiconductor 3 phase fuses.                                                                                     
* Quoting NEMA 1 or NEMA 12 option                                                                                    
* UL Listed.                                                                                                                            
* Fully Digital PWM design.                                                                                                    
* 4-20ma/0-10 VDC follower.                                                                                                   
* Separately adj. Accel/Decel-Min/Max control.                                                                        
* Input AC line reactor of 3%.                                                                                                  
* Auto restart.                                                                                                                        
* Extensive front panel digital indication.                                                                                 
* 95% efficiency @ 100% speed.                                                                                            
* 3 phase ground fault protection.                                                                                           
* Minimum 2 contractor bypass.                                                                                              
* DC link reactor.                                                                                                                    
* Startup, training and manuals.                                                                                              
* Line voltage disconnect.                                                                                                      
* METASYS “N2” direct capable/JCI Certified as METASYS Compatible.                                  

“D” F.O.B. DESTINATION, FREIGHT PREPAID AND ALLOWED
“V” F.O.B. SERVICE/MAINTENANCE

Freight or start-up charges due to distance

36 months
The warranty shall be for a period of 24 months from the date of project Substantial Completion. Further, the warranty shall include all parts, labor, travel time, administrative costs, overhead, travel expenses, technical support and any and all other costs to provide the warranty service

With the exception of drives that have Softstart Bypass.  These are custom drives and not returnable.  Identified by “+PSI” or “+PSR” or stock/model number.

Contractor will provide for return of items ordered in error for up to 30 calendar days from receipt with the University paying only the return shipping costs.

Start up:  $400/trip  4 hrs max

All non-listed, related items from manufacturer's catalog or product list are available at 25% discount. 

         LOT III Variable Frequency Drives:
* Variable Torque
* Input-Semiconductor 3 phase fuses
* NEMA 1 enclosure or can quote at NEMA 12 option
* UL Listed
* Fully digital PWM design
* 4-20ma/0-10 VDC follower
* Separately adj. Accel/Decel-Min/Max control
* Input AC line reactor of 3%
* Auto restart
* Extensive front panel digital indication
* 95% efficiency @ 100% speed
* 3 Phase ground fault protection
* Includes minimum 2 contactor bypass
* DC link reactor
* Startup, training and manuals
* Line voltage disconnect
* METASYS “N2” direct capable / JCI Certified as METASYS Compatible
* Drives must be rated for full load & current (100%) continuously at 40 degrees C

JMB & ASSOCIATES agrees to provide:
* Phase loss and phase reversal protection.                                                                               
* heavy duty definite purpose contactor-IEC/ACI rating.                                                              
* 7 day/24 hour service.                                                                                                             
* Variable torque.                                                                                                                      
* Input-Semiconductor 3 phase fuses.                                                                                     
* Quoting NEMA 1 or NEMA 12 option                                                                                    
* UL Listed.                                                                                                                            
* Fully Digital PWM design.                                                                                                    
* 4-20ma/0-10 VDC follower.                                                                                                   
* Separately adj. Accel/Decel-Min/Max control.                                                                        
* Input AC line reactor of 3%.                                                                                                  
* Auto restart.                                                                                                                        
* Extensive front panel digital indication.                                                                                 
* 95% efficiency @ 100% speed.                                                                                            
* 3 phase ground fault protection.                                                                                           
* Minimum 2 contractor bypass.                                                                                              
* DC link reactor.                                                                                                                    
* Startup, training and manuals.                                                                                              
* Line voltage disconnect.                                                                                                      
* METASYS “N2” direct capable/JCI Certified as METASYS Compatible.                                  
* Drives rated for full load & current (100%) continuously at 40 degrees C.                                

The warranty shall be for a period of 24 months from the date of project Substantial Completion. Further, the warranty shall include all parts, labor, travel time, administrative costs, overhead, travel expenses, technical support and any and all other costs to provide the warranty service.

All non-listed, related items from manufacturer's catalog or product list are available at 20% discount. 

     LOT I –Motor Controller: 

* Universal voltage 100-600 vac (no adjustments)
* Electric motor overload

     Class 10        115% continuous

     Class 20        115% continuous

     Class 30        115% continuous
* 500% FLA for 30 seconds
* Shorted SCR detection
* Phase loss and phase reversal protection
* Unit withstanding rating (min 45KA)
* Heavy duty definite purpose contactor-IEC/ACI rating
* Nema 4 enclosure
* Starting torque 0-100%
* UL/CSA approved solid state started
* Unlimited starts/hour with no derating
* 120 volt for 3 wire control and stop/start operation
* Control input 120/240 volt or dry contact (2 or 3 wire control)
* Heavy duty bypass contactor

VIKING ELECTRIC SUPPLY agrees to provide:
* Universal voltage 100-600 vac (no adjustments)                                                                                     

     Class 10 115% continuous                                                                                             

     Class 20 115% continuous                                                                                             

     Class 30 115% continuous                                                                                             
* Shorted SCR detection.                                                                                                          
* Phase loss and phase reversal protection.                                                                               
* Unit withstanding rating (min 45KA).                                                                                         
* heavy duty definite purpose contactor-IEC/ACI rating.                                                              
* Nema 4 enclosure.                                                                                                                  
* Starting torque 0-100%.                                                                                                           
* UL/CSA approved solid state started.                                                                                      
* Unlimited starts/hour with no derating.                                                                                      
* 120 volt for 3 wire control and stop/start operation.                                                                  
* control input 120/240 volt or dry contact (2 or 3 wire control.                                                     
* 7 day/24 hour service.                                                                                                             
* Heavy duty bypass contactor.                                                                                                              
* Variable torque.                                                                                                                      
* Input-Semiconductor 3 phase fuses.                                                                                     
* Quoting NEMA 1 or NEMA 12 option                                                                                    
* UL Listed.                                                                                                                            
* Fully Digital PWM design.                                                                                                    
* 4-20ma/0-10 VDC follower.                                                                                                   
* Separately adj. Accel/Decel-Min/Max control.                                                                        
* Input AC line reactor of 3%.                                                                                                  
* Auto restart.                                                                                                                        
* Extensive front panel digital indication.                                                                                 
* 95% efficiency @ 100% speed.                                                                                            
* 3 phase ground fault protection.                                                                                           
* Minimum 2 contractor bypass.                                                                                              
* DC link reactor.                                                                                                                    
* Startup, training and manuals.                                                                                              
* Line voltage disconnect.                                                                                                      
* METASYS “N2” direct capable/JCI Certified as METASYS Compatible.                                  
* Drives rated for full load & current (100%) continuously at 40 degrees C.                                

SPECIFICATIONS

DESIGN AND CONSTRUCTION
The unit shall be variable torque.

The unit shall be U.L. listed, solid state, micro processor-based with a pulse width modulated (PWM) output wave form (none others are acceptable). 

The VFD shall employ a full wave bridge rectifier and capacitors to minimize the ripple of the rectified voltage to maintain near constant DC voltage. 

Insulated gate bipolar transistors (IGBT’s) shall be employed as the output switching device.

The VFD package shall contain the equivalent of 5% impedance to reduce harmonic distortion. The 5% equivalent impedance shall be provided in the form of a DC bus choke, an input AC line reactor in each phase, or a combination of the two methods.

Control circuitry shall be plug-in, plug-out modular basis with a corrosion resistant coating on printed circuit boards.

Units to be suitable for an operating environment from 0°C to 40°C temperature and humidity up to 90% non-condensing.

Include the following operating and monitoring devices mounted on the front cover:
       A disconnect switch or circuit breaker to de-energize both the drive and bypass circuit with door interlocked handle and lock-open padlocking provisions.
       Operating mode selector switch marked "hand-off-auto".
       Manual speed adjustment via keypad, mounted on the door.
       Manual bypass selector switch to select power through drive or bypass (if a bypass is provided).
               
Provide a manual bypass circuit and bypass starter to transfer from variable frequency drive operation to bypass operation (if a bypass is provided).

Output power shall be suitable for driving standard NEMA B design, three phase alternating current induction motors at full rated speed with capability of 6:1 turndown.

Additional performance capabilities to include the following:
                Ride through a momentary power outage of 15 cycles,
                Start into a rotating load without damage to drive components or motor,
                Capable of automatic restart into a rotating load after a preset, adjustable time delay following a power outage
                Input power factor:  Min 0.95 throughout the speed range
                Minimum efficiency:  95% at 100% speed, 85% at 50% speed

CONTROL FEATURES
Use control circuits compatible with input signal from temperature control system in the automatic mode and from manual speed control in the manual mode. Vary motor speed in response to the input control signal.  Include components necessary to accept the signal from the temperature control system in the form that it is sent. 

Include the following additional control features:

• Hand-Off-Automatic (HOA) selector switch to select local or remote start/stop and speed control
• Analog input, selectable 0-10v or 4-20 mA, for automatic control from the temperature control system
• Local speed control at the VFD
• Adjustable acceleration and deceleration rate so that the time period from start to full speed and from full speed to stop can be field adjusted
• Adjustable minimum and maximum speed settings for both automatic and manual modes of operation
• Manual transfer bypass circuit
• Field adjustment of minimum and maximum output frequency
• Two (2) sets of programmable form “C” contacts for remote indication of variable frequency drive condition.  Note: default programming to be set for “Drive Run & Fault”.
• Illuminated display keypad.
• External Fault indicator
• One (1) input for a N.O. dry contact type input for a 2-wire remote start/stop
• One (1) input for a N.C. dry contact type input for external faults: (freezestats, fire alarm, smokes, etc).  This input shall be factory wired to prevent both the VFD and bypass starter operation when external fault is present.
• One (1) N.O. dry contact output for proving motor status.  This output shall be programmed to detect belt or coupling break that would remove the load from the motor.  The dry contact will open on loss of load or VFD being off.
• PID control loop capable of VFD control from an external device connected to a VFD analog input.

The VFD controller shall convert VFD information into the [BACnet MSTP / LonWorks FTT-10/ Other] protocol that will be compatible with the building direct digital energy management system (EMS) supplied on the project.  This output shall be through a serial interface port capable of two-way communication with the building EMS provided on this project.  Final connection shall not require any additional intermediate gateway devices to provide throughput of data.  The following data shall be provided at a minimum:

• Fault condition
• Speed
• Amperage
• Frequency
• Voltage
• Bypass status (if supplied)

PROTECTION FEATURES
Use electronic protection circuitry in the power circuits to provide an orderly shutdown of the drive without blowing fuses or tripping circuit breakers and prevent component loss under the following abnormal conditions:
                Activation of any safety device;
                Instantaneous overcurrent and/or over voltage of output;
                Power line overvoltage and undervoltage protection;
                Phase loss;
                Single and three phase short circuiting;
                Ground faults;
                Control circuit malfunction;
                Overtemperature; and
                Output current over limit.
  

Additional protective features:

• Input transient overvoltage protection up to 3000 volts per ANSI 37.90A;
• DC bus fusing or other electronic controls which limit the rate of rise of the DC bus current and de-energizes the drive at a predetermined current level;
• Fusing for the control circuit transformer;
• Grounded control chassis; and
• Devices and/or control circuitry to ensure that the variable frequency drive and bypass starter are not both energized and driving motor simultaneously.

DIAGNOSTICS
Provide an English character display (no error codes) with indicators for the following:
                Phase loss
                Ground fault
                Overcurrent
                Overvoltage
                Undervoltage
                Over temperature
                Overload
                DC bus status

QUALITY ASSURANCE TESTS
Use a factory heat stress test to verify proper operation of all functions and components under full load.

Variable frequency drive manufacturer or designated representative to perform a field test of each drive, in the presence of the DFD's representative, for the following items:

• Provide general inspection to verify proper installation;
• Demonstrate drive reaction to simulated power interruptions of two seconds and sixty seconds;
• Demonstrate adequate protection during switching from variable frequency drive operation to bypass starter operation and back again;

BYPASS EQUIPMENT

Bypass Starters:
        The bypass starters for 208 volt motors, 20 HP and less; and 480 volt motors, 40 HP and less, shall be across-the-line magnetic starter type.

       The bypass starters for 208 volt motors, 25 HP and more; and 480 volt motors, 50 HP and more, shall be solid state reduced voltage starting type.

Bypass Configuration:

Provide one main disconnect switch or circuit breaker to de-energize both the drive and bypass circuit. Provide a drive input disconnect switch or fuse block to allow the drive to be isolated while the bypass circuit is energized. Provide one output drive contactor and one output bypass contactor. The two output contactors shall be electrically interlocked to allow only one contactor to be closed at any one time.

Provide motor overload protection in the bypass circuit.

Provide bypass equipment in a common enclosure with the VFD or, if not available, in a separate enclosure.

AC INPUT LINE REACTORS
When needed to comply with the requirement for 5% equivalent impedance, furnish and factory install AC input line reactors.

Line reactors shall be installed in each phase of the AC input side of the VFD and mounted within a common enclosure with the VFD.

Line reactor shall be a three phase inductor, iron core, 600V, Class H insulation, 115 degree C rise, copper windings with screw type terminal blocks.

Revision History