The Eaton Cutler-Hammer IT. 27mm

The Eaton Cutler-Hammer Intelligent Technologies (IT.) family of Electromechanical products utilises new advances in solid-state technology, offering increased functionality, system and facility cost savings, improved safety, significantly reduced size and the benefits of 24Vdc control.

Reduced Physical Size

Known as the world’s smallest IEC full voltage non-reversing and reversing, single or three-phase starter, the IT. 27mm starter is at least 36% smaller and weighs at least 46% less than equivalently rated products. This offers significantly reduced control panel space and equipment material, installation, and shipping costs. The A-Frame FVNR Starter includes a Contactor measuring only 27mm wide with overall Starter maximum dimensions of only H 102mm x W 31mm x D 79mm.

Lower Installed Costs

The compactness of the 27mm starter reduces the size of panel designs compared to other full voltage starters resulting in a significant cost savings for competitive world markets. Small size, less weight, modularity and integrally wired solid-state control circuit components keep overall costs down. Low coil and overload relay power consumption reduces energy usage, and less heat generation eliminates or reduces control panel cooling and ventilation requirements. Easy field assembly of control wiring with plug and unplug field wiring connector also increases uptime and lowers overall cost.

Enhanced Safety

Control with 24Vdc is reliable, cost-efficient, globally accepted and offers safety advantages over traditional AC control. By incorporating 24Vdc control, we’ve reduced the risk inherent to working with higher control voltages.

	24Vdc coil – safe, reliable, fault tolerant, global standard, long life, low cost PLC I/O, minimal leakage current, reduced arcing and balanced magnetic field
	Guarded terminals
	Environmentally friendly design – no hazardous materials
	Standard conformal coated boards for environmental toughness
	Power up safety based on thermal utilisation
	Test with main incoming power off
	Standard lockable cover over FLA and phase current unbalance settings

Performance

The IT. 27mm has status indication, diagnostics, remote reset abilities and selectable protective functions that simplify trouble shooting and maximise production time.

	Small and simple DC magnet system with yoke and armature manufactured from a single piece of plated sheet steel. The design concentrates the magnetic flux to efficiently close the contactor
	Superior electrical and mechanical life – equal or better than the competition At least 1.8 million electrical life operations at maximum operating rate No laminations, shading coils or magnetic noise ensuring long life for at least 20 million mechanical life operations
	Sealed power coil is as little as 20% of competitive DC devices
	Ride-Through Capability – eliminate/reduce brown out effects 6-10 cycle ride-through on 0 voltage while fully loaded Unlimited ride-through at 50% voltage
	1.0 to 1.30 Motor Service Factors
	Clean pick-up and drop-out since there is no residual magnetism or sticking
	Alarm without Trip mode for critical must-run applications
	Phase Current Unbalance trip at 50% line current for >10 seconds
	Ambient compensated

Application Flexibility

IT. Is designed and tested for the most demanding global applications. The 27mm starter provides solutions and offers benefits in a wide variety of applications and industries:

	Conveyor control and material handling
	Packaging OEM panels
	Plastic processing
	Manufacturing facilities
	Food processing
	Overhead doors
	Water/Wastewater pump control
	Refridgeration
	Distributed I/O control

Increased Functionality

The IT. EM A-Frame also sets a new standard for electromechanical capabilities with its exclusive Pulse Width Modulation (PWM) control and digital microprocessor electronics and algorithms.

Once energised, coil power is pulse width modulated at 20kHZ carrier-frequency (beyond audible range) to maintain the sealed condition even in high shock and vibration. PWM minimises the DC value to the main contacts yet always applying the necessary contact pressure. PWM is also used to control the DC coil draw. During closure, the coil requires more current than when the contactor is closed generating a minimised DC value to the contacts, which reduces energy to the contactor providing the most compact starter available.

The A-Frame solid-state overload relay microprocessor digitally sequences through each phase sensing current flowing to the motor translating to I2T values for motor diagnostics, control and protection. The proprietary microprocessor electronics and algorithms provide fast and accurate motor heating emulation using high level differential equation math processing; multiple PWM parameters for variability in applied voltages; an internal hold-in (sealed) contact; trip/alarm contact; and Trip Class and Phase Current Unbalance programmability.

	115Vac – 600Vac
	Digital microprocessor contactor and solid-state overload relay with EEPROM
	Unique microprocessor reversing control energises both forward and reversing contactors with only one wiring point and a mechanical interlock
	2 or 3 wire control
	SEMI F47 Voltage Sag Immunity compliant with and F47 certified power supply (PSS) Up to 19 starters can be used with the low cost, high performance PSS25# power supply One starter can also be used with the small size D77E-PS1 or PSS10# power supply
	DIN rail or panel mounting for 6-12 Amp
	Front mounted auxiliary contacts: 1 N.O, 1 N.C, or 1 N.O/1 N.C (logic level)
	Overload Relay LED Status Indication: 24Vdc Control Power Initialised Trip Class 10 or 20 or 30 user selectable on same unit Phase Current Unbalance Protection user selectable On/Off Push-to-Test Alarm On Thermal Memory ™ % and Flash Sequence Overload Trip (TM > 100%) Overload Trip (Phase Loss/Current Unabalance) Ready for Reset