IT 21 For UNWIND INTERMEDIATE REWIND Sections

• Soft START / STOP control
• Splice Control
• 16 job save memory
• Web break detection
• Built-in signal conditioner for load cell and speed sensor
• 0-10v dc output for external tension indicator
• Configurable analog / digital inputs
• Optional CAN Bus interface for Tension Tuner*
• Optional RS-232 interface for PC/Laptop
• Tension setting by keypad, potentiometer or external reference

IT Series is DSP based intelligent tension controller designed for web tension control of unwind, intermediate and rewind sections based on feedback from load cells or dancer or diameter sensors. IT 21 is compact and versatile in nature...same model can be used for the winders and unwinders. The control is achieved in closed loop or in open loop mode, regulating the brake, clutch or drive.

SPECIFICATIONS

• Supply voltage : 240/120Vac +10%, -20%, 220/110Vac ±10%, 50/60 Hz.
• Internal power supplies : 3.3 Vdc,+15 Vdc, 5 Vdc -5 Vdc & 9 Vdc
• Supply for potentiometer : 3Vdc ±5, max load - 10mA
• Supply for load-cell : 10 Vdc spilt into ±5V with respect to Ground.
• Voltage tolerance : ±5%. Current rating: 75mA.

Input signals

• Load cell1 & Load cell2 : 1.5 to 12 mV at max Tension, Zi of 350 to 1000 ohm
• Proximity switch : 9vdc supply with current rating of 25mA.
• Analog inputs : 4 channel, 0 - 10Vdc/ 4-20mA,Zi >= 10k ohm
• Digital inputs : 5 Potential free contacts, rated 24Vdc or more / .05 Amp or more.

Output signals

• Excitation output : 0-24Vdc, 5Amp.
• Analogue Outputs : 1) 0 - 10Vdc or 4-20mA selectable by jumper
• 2) 0 - 10Vdc outputs, Zo >= 2.2k ohm for voltage outputs & Zo <= 500 ohm for current output
• Digital Output : Open collector Digital output rated 5Vdc,100 mA

Indications

• LCD Display : 2 line X 16 character Display with back light for user interface.
• Keypad : Membrane keypad with 8 keys
• LED : LED indication for Tension ON/OFF and AUTO/MAN modes.
• Ambient : 40 C
• Altitude : Less than 1000 meters
• Enclosure protection : Dust & Vermin proof
• Mounting : Wall / machine mounting

MECHANICAL DIMENSIONS

Width (W) : 235 mm

Height (H) : 310 mm

Depth (D) : 185 mm