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Unico Digital Inverter 1.1kW-500kW / 1105 Inverter

Unico Digital Inverter

Overview

The 1105 digital AC inverter provides flexible, efficient and cost-effective solutions to a range of control needs.  It combines the latest IGBT-based PWM and digital-signal processor technologies with a revolutionary, patented digital-current regulator to deliver optimum performance, full programmability, and simplicity of operation. Compact and rugged, the inverter comes as an open chassis or in a NEMA 4 enclosure. Either type can be foot-mounted to a sub-plate or flange-mounted through a cutout, to dissipate heat outside an enclosure.

 

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  • Manuals
  • Overview
  • Installation Operation

Product Details

Performance Flexibility

The 1105 offers performance capabilities to suit a broad range of applications where variable-frequency AC or conventional DC inverters are normally used. It can be configured for either constant-load, variable-load, or extended-load applications. A variety of general-purpose and application-engineered software options provide features optimized for specific customer requirements, such as blower and pump motors.

 

Digital Setup, Easy Operation

The keypad and liquid crystal display provide a simple interface for setting and viewing operating parameters and diagnostics. All controller settings are made digitally through the keypad. Readouts and fault messages are displayed in plain language. A help feature provides on-line assistance at the touch of a button.

 

Power Quality

The 1105 includes a built-in link choke that provides near-unity overall power factor at all motor speeds as well as low harmonic line currents.

 

Protection and Advanced Diagnostics

The 1105 monitors its operating conditions and provides a comprehensive set of overload, short circuit, and other protective features. Faults are displayed in plain language along with the operating conditions at the time of occurrence. A log stores the last three faults as well as the buss voltage, motor current, output frequency, operating mode, and time of the most recent fault.

 

Serial Connectivity

The 1105 features a fully-isolated EIA RS-422/485 serial interface that allows a process control computer, building automation system, or other host computer to set up, monitor, and control the drive using an ANSI standard protocol. An EIA RS-232 port is also available for direct connection to most types of personal computers. Optional DF1 and RTU protocols allow direct connection to Allen-Bradley and Modicon programmable controllers.

 

Features and Benefits

   •  All-digital control for repeatable operation
   •  24-bit digital-signal processor (DSP) for fast, dynamic response
   •  8 kilobyte battery backup memory for application setup data
   •  48 kilobyte scratch pad memory and 1.5 megabyte firmware memory
   •  Clock/calendar maintains accurate time during power outage
   •  Sine-coded PWM or modified six-step waveform outputs for improved performance
   •  High-switching-frequency IGBT devices for smooth, quiet operation
   •  Digital current regulator for reduced fast response
   •  Internal control loop for maintaining output during sudden load changes
   •  Variable frequency control for simple applications
   •  Integral DC link choke for high power factor and low total harmonic distortion
   •  Power-loss ride-through for reducing nuisance trips
   •  Master-slave operation using either analog inputs or high-speed serial link
   •  User-programmable analog and digital inputs and outputs
   •  Ideal for applications requiring NEMA 4 enclosures

 

Ease of Installation, Setup, and Maintenance

   •  Automated setup features do not require chart recorders or meters
   •  Software calibration and adjustment eliminates tuning components
   •  Digital parameter adjustment for precise and repeatable settings
   •  Software input and output scaling eliminates potentiometers
   •  Complete, self-contained package requires minimal option boards
   •  Identical control boards across full power range reduce need for spare parts

 

Ease of Use

   •  Touch keypad for easy parameter adjustment and access to displays
   •  Two-line, descriptive, plain-language display
   •  Numerical readouts and bar graph display
   •  Comprehensive fault diagnostics displayed in plain language
   •  Real-time information and three-fault log
   •  Optional DriveLink™ software for managing multiple drives from a personal computer

 

Safe Reliable Operation

   •  Extensive electronic protection circuits
   •  Tolerant of AC line voltage and frequency fluctuations
   •  Multilevel security code prevents unauthorized parameter changes
   •  Lockout of local operator controls, for safe remote operation


Electrical

Input Supply
Voltage                                          
                                                
Voltage tolerance                       
Frequency                                
Power factor                             
                                               

200 to 240 or 380 to 480 V AC, three-phase   
Phase sequence insensitive
–10% of minimum, +10% of maximum
47 to 63 Hz
Displacement: 0.99 at all loads
Overall: 0.94 at rated load

 

Output Rating

Voltage                                          
Frequency                               
Switching frequency                 
Modifies six -step frequency        

Service Conditions 
Efficiency                                
Overload current                     

Zero to input supply voltage, three-phase

Programmable from 2 to 10 kHz
Programmable from 0 to 10 kHz


97% nominal at rated switching frequency

 

Environmental

Operating temperature              
Storage temperature                  
Operating humidity                        
Altitude                                   
32° to 104° F (0° to 40° C)
5° to 158° F (–15° to 70° C)
95% maximum, non-condensing
To 3,300 ft. (1,000 m) without de-rating

 

Performance

Frequency Control 
Range                                            
            PWM Sinewave            
            Six Step                      
Resolution                               

Hz with digital input


Zero to base speed at full current output
           Base speed to 300 Hz at constant power
           0 to 10 Khz
0.20% with analog input (10-bit)

 

 

Inputs and Outputs

Analog Inputs
20 MHz control                                 
40 MHz control                                
                                                           

Analog Outputs
20 MHz control                                
40 MHz control                                
                                                               

Digital Inputs 
20 MHz control                                
40 MHz control                                
                                                               

Digital Outputs
20 MHz control                                
                                                            
40 MHz logic I/O control                  
40 MHz contact I/O control              


Three (3) 12-bit analog inputs (0 to +10 V DC, ±10 V DC, and 4 to 20 mA)
Three (3) 12-bit analog inputs (±10 VDC or 4 to 20 mA)
                                                           


Two (2) 12-bit analog outputs (±10 VDC)
Two (2) 12-bit analog outputs (±10 VDC and 4 to 20 mA)
                                                               


Eleven (11) digital inputs (sink of 1 mA to common)
Twelve (12) digital inputs (source of 8 mA from 24 VDC)
                                                               


Three (3) standard digital outputs (Form C contact rated 250 VAC @ 5 A, 
        Form A contact rated 250 VAC @ 5 A, and open-collector driver rated 24 VDC @ 500 mA)
Three (3) digital outputs (Form A contact rated 250 VAC @ 5 A)
Six (6) alternative digital outputs (open-collector drivers rated 24 VDC@ 500 mA)

                                                             

Serial Communications

Asynchronous port                      
                                     
                                     
                                    
Synchronous port                            
EIA RS-232 and RS-422/485, isolated, 0.3 to 19.2 kbaud
        ANSI-x3.28-2.5-A4 protocol standard;  
        Optional Allen-Bradley DF1, Modicon RTU, and 
        Johnson Controls N2 protocols
EIA RS-485 for high-speed master/slave networking

 

Typical Parameters and Displays

Programmable Parameters

   • Set point   
   • Set point minimum
   • Set point maximum
   • Set point units label,  
   • Scaling, precision     
   • Set point source
   • (3) skip frequencies
   • (3) skip bandwidths                
   • Minimum / maximum               
   • Current limit                          
   • Restart retries / delay             
   • Analog I/O scaling / polarity     
   • User analog input mode
• User I/O parameter selections         
• S-ramp profile smoothing   
• Switching frequency     
• Master / slave select / source           
• Slave ratio / position phasing          
• Keypad enable              
• Security code                






                                   
Status Displays

   • Buss voltage 
   • Power factor 
   • Output current
   • Output frequency
   • Power consumption          
• Energy consumption     
• Accumulated thermal load  
• Accumulated time run  
• Fault log and conditions  
• Input status

 

Protection

   •  Ground fault 
   •  Output phase-to-phase short circuit        
   •  DC buss over-voltage
   •  DC buss under-voltage
   •  Instantaneous over-current
   •  Output overload
   •  Heat sink over-temperature            
   •  Ambient over-temperature

•  Power transistor fault
•  Logic power under-voltage
•  Remote command signal loss
•  Memory malfunction
•  Processor not running fault
•  Synchronous serial error

 

Power Range

Input Voltage Constant-Torque Applications Variable-Torque Applications Extended-Torque Applications

230 VAC

  1 1/2-1 5hp(1.1-11kW 2-20 hp (1.5-15kW --
380 VAC   1 1/2-25 hp(1.1-18kW) 2-30 hp (1.5-22kW  --
460 VAC   1 1/2-25 hp(1.1-18kW) 2-30 hp (1.5-22kW 25-40 hp (18-30 kW) 


Consult factory for other powers.  Other voltages require appropriate de-rating.

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