Unitrol Soft Touch
The World’s First Passive Pinch Point Safety System
Designed to prevent Spot Welders, Riveters, or other machines from applying full force at the pinch point if it detects fingers
Soft touch technology will make your equipment pinch-proof without loosing a minute of productivity.
► Easier Setup:
No User Calibration, EVER. Just install and turn power ON.
Works with Non-Unitrol MFDC inverter and 1 Phase AC controls.
Change two plug-in relays for use with 115VAC or 24VDC solenoid
► Always Ready to Protect:
Does not have to be calibrated even when you power-up, change
material or change tooling.
► Instantly Tunes to Your Welder:
Does not stop production to re-calibrate. Automatically compensates
for changes in transformer tap switch position or line voltage shifts.
► New Look:
Easy-to-Read Operation Display. Shows exactly what is happening.
Can be mounted on either side of enclosure.
► Supports SOFT TOUCH RETRACT:
Just add optional RETRACT pneumatic system with HEAD DOWN limit switch for full protection.
► Full Electrical Redundancy:
All inputs and outputs require closure of both electro-mechanical and
solid-state redundant components for full safe operation. Self-monitors
output relay to prevent any operation if a fault is detected.
As Always, The UNITROL SOFT TOUCH:
► Cannot Be Bypassed.
► Sensor Wires Always Clear of Production Area:
Sensor wires are connected at output of welder secondary.
Never needs sensor wire location to be moved closer to the
electrodes for any type of welder.
► Fast Release:
Electrodes close under low force and release in less than
half of a second if metal is not detected between electrodes.
► Electrodes Close Without Initial Delay:
Electrodes start to move at the same time the welding control is
initiated. Closing speed is independent of welding pressure.
► Works with Ram Depth Limit Switch:
For redundant system requiring both Electrode Continuity
and Ram Depth Limit Switch closure.
Please watch the video below to know more about the benefits and savings the Soft Touch will do for you!
Installation on your equipment is critical, we have an experienced team of technicians and installers that can install your Soft Touch system and train your operators on its safe use.
Choosing the right Soft-Touch Safety System for your Spot Welder
STAND-ALONE SOFT TOUCH OPTIONS
RETRACT (HIGH LIFT)
These options protect against pinch point injury when bringing the electrodes out of RETRACT and to the WORK POSITION. While spacing between electrodes in the WORK POSITION is typically ½”, the spacing is adjusted by the operator or setup person and can be very small if not done correctly. Since a normal RETRACT system closes electrodes using full line air pressure, any body part caught between the electrodes will be severely injured.The SOFT TOUCH RETRACT options bring the electrodes down to the WORK POSITION (small opening between electrodes) with low force. This low force remains until the first weld is started and continuity between the electrodes is detected. At that time the full RETRACT force is turned on and remains until RETRACT is released. It is offered in two models:
9181-34JA: For use in RETRACT systems that have a 3-level foot switch to both turn on and latch the RETRACT and also then start the weld. This option includes a proximity switch and bracket to be installed on the welder. The proximity switch should be adjusted to close when the system is in the lowered WORK POSITION.
9181-34JB: For use in RETRACT systems that have a separate foot switch to turn on the RETRACT function. A proximity switch is not required and is not supplied with this option.
9181-34BPA: This option is used when welding material that has high-resistance coatings such as titanium oxide. It is also useful when parts have heavy non-conducting coatings, such as drawing compounds, which will prevent continuity between the electrodes. The option includes a faceplate with a high-security key switch and two LED indicators. The switch can be set for CONTINUITY or TIMED DELAY.LIMIT SWITCH
9181-34LSA: This option is used when redundant systems are required. The option includes a proximity switch with bracket to be mechanically set to close when the electrodes are less than ¼” apart. The SOFT TOUCH system will not bring the electrodes to full welding force until both this proximity switch is closed and continuity is detected.
9181-34LSB: This option provides a selector plate with a high-security key switch and two LED indicators. It is used to allow welding of material that has poor conductivity or has poor-conducting coatings. The proximity switch acts as a depth switch. It is set to close when the electrodes are less than ¼” apart. The switch allows selection between continuity and depth switch as needed when welding various materials. 115V VOLTAGE SOURCES:
9181-34TECNA: This option is for use with TGECNA welding controls. It includes a 115VAC transformer and two line fuses factory wired into the main control cable. Input can be 230VAC or 460-VAC. The output of the SOFT TOUCH system is changed from Normally Open to Normally Closed to match the TECNA second-stage initiation scheme. 9181-34/115: This option is used for welding controls that do not have a 115VAC source. It includes a 115VAC transformer with two line fuses factory wired to the main control cable. Input can be 230VAC or 460VAC.
9181-34AM-ID40ST: This option is required when installing SOFT TOUCH on a welder that has an Amada/Miyachi ID40ST welding control. It includes a relay system to handle the unique initiation sequence of that control.
9181-34AM-ID40IVST: This option is required when installing SOFT TOUCH on a welder that has an Amada/Miyachi ID40IVST welding control. It includes a relay system to handle the unique initiation sequence of that control.