Electronic Components

The twinamptm ti27 tension amplifier (and ti28 powered by 24vdc) is a versatile, dual-channel (2-channels), rack-mount tension transducer interface for monitoring tension in any two tension-sensing zones simultaneously on web processing machinery. Two independent and isolated tension amplifier circuits are included on one card saving you space and money.

Each amplifier of the twinamp powers a pair of tension transducers installed in the web path, and supplies an output proportional to tension. Standard tension outputs include 0-to-10 vdc isolated and 4-to-20 ma dc isolated for use with a drive, controller or plc. Also, a 1 ma dc signal is available for displaying tension on an analog or digital meter for reference by the machine operator.

The base card for the twinamp is an iecansiieee type 2 plug-in circuit card 6.8" x 3.9" (17.3cm x 9.9cm) for installation in a standard size 3u, 19-inch rack. The device includes a front panel with a pull handle for easy removal.

FEATURESrn115 Volt ac 50/60 Hz power input (TI27) or 24 Vdc (TI28)
Isolated Outputs. 0-to-10 Vdc and 4-to-20 mA outputs proportional to tension. Integrated isolation from chassis and transducer ground.
Tension Meter Output. Separate 0-to-1 mA signal output for a tension meter.
Meter Damping. Adjustment minimizes fluctuation of the optional analog tension meter needle.
Quik-CalTM push-button zero and calibration eliminates pot adjustments to make calibrating simple and fast. 50:1 calibration range.
10% Calibration Weight Ratio. A 15 lb Calibration weight allows full meter-scale output at 150 lbs tension.
rnOPTIONSrn230 Volt Input (230). 230Volt 50/60 Hz Ac power input. TI27 only.
25% Calibration Weight (25CW). Used when 25% of full-scale calibration weight is preferred to the standard 10% calibration weight. Jumper selectable.
0-100 mA (100M) tension meter output.
Auto Zero (AZ). Unit will automatically zero the output on each power up. Jumper selected on or off.
Extended Range (XRE). Extends the tension sensing range of XR-equipped transducers to effectively increase the transducer sensitivity for very low web tensions. Transducers must also have the XR option.
rnACCESSORIESrnPlug-in Adapter, for hard wiring. TwinAmpTM can be plugged into this card adapter instead of a rack for hard wiring, or for mounting in your own enclosure. (DFE Part# 143-0000)
Analog tension meter. 1mA, to be installed by user (DFE Part# 722-1385). Or meter in its own enclosure (DFE Part# 723-1453). Enclosed meter requires a cable (DFE Part# 721-0967). Specify max scale value when ordering.
Digital tension meter. 4-digit, LED meter (DFE Part# 723-2307). Specify scale. Requires 24 Vdc provided by user.

FEATURESrn 24 VDC power input.
0-10V isolated, undamped output to the non-hazardous arearn 4-20mA isolated, undamped output to non-hazardous arearn 0-1mA damped output for tension meter, non-hazardous arearn +5 VDC current-limited power supply for optional digital meter, non-hazardous arearn 0-1mA damped output for tension meter, energy limited to hazardous arearn +5V/+10V power supply for tension transducers, energy limited to hazardous arearn Quik-Cal push-button Zero and Calibrationrn Dual Calibration feature allows for 2nd calibration setting, if desired. May require optional dual meter scale for meter.
NEMA1 protective steel enclosure with cover.
Status LED. Steady light indicates unit is on. Light blinks during calibration, flashes in case of error.

Tension Amplifier Capabilitiesrn 0 - 1 mA meter output proportional to tensionrn 0 - 10 VDC tension signal outputrn Quik-Cal pushbutton zero and calibrationrn Field-retrofittable to all DFE transducersrn Small package ensures application flexibilityrn Inline version can be stowed in cable tray or mounted to DIN railrn XRE Extended Range option -- for increased sensitivity at lower loadrn DIN-rail mounting clip and "Hook and Loop" mounting

Benefitsrn Improves machine operation and productivity by making it easier to run proper tension.
Low-cost component for complete tension measurement or control system.
Modular package for versatile, flexible mounting and setup.
Backwards compatible. Packaging dimensional footprint and pinout connections match those of previous TI17B and TI18B Tension Indicator designs.
Featuresrn 115V/230Vac 50/60Hz power input (TI17C) or 24Vdc (TI18C).
Quik-Cal push-button zero and calibration making calibrating simple and fast.
Auto Zero on power up.
0 to 10Vdc or 4 to 20mA isolated outputs.
0 to 1 mA output for a tension meter.
CE-marked. The TI17C in its full enclosure, and the TI18C in all configurations.
Meter damping adjustment. Minimizes meter fluctuation. (Used with optional tension meter).
Dual Calibration. Allows settings for two transducer calibration ranges.