Loepfe WeftMaster CUT-iT User manual

Instruction Manual
WeftMaster® CUT-iT
47083003 en
Original Manual
Version 1.0.x.x / 10.2019

Loepfe Brothers Ltd.
Kastellstrasse 10
8623 Wetzikon / Switzerland
Phone [phone]
Fax [phone]
E-mail [email protected]
Internet www.loepfe.com
Document title: WeftMaster CUT-iT Instruction Manual
Language version: English
This Manual is protected by copyright.
Complete or partial reproduction and dissemination of this Manual to third parties – even in form of extracts –
as well as the use and / or disclosure of the contents are not allowed without the written approval of Loepfe
Brothers Ltd., except for internal purposes.
WeftMaster is a registered trademark of Loepfe Brothers Ltd. in Switzerland and / or in other countries.
© 2019 Loepfe Brothers Ltd., Switzerland
WeftMaster CUT-iT www.loepfe.com 3

Contents
Contents
1 General Information 7
1.1 About this Document 7
1.2 Validity 7
1.3 Design features 7
2 Safety 8
2.1 Safety Information and Warnings 8
2.1.1 Explanation of Symbols 8
2.2 Intended Use 9
2.3 Target group 10
2.3.1 Authorized personnel 10
2.4 General safety information 10
2.5 Safety Concept 11
2.5.1 Fire prevention measures 11
2.5.2 Safety precautions when using heat cutters 12
3 Product and Function 13
3.1 Product description 13
3.1.1 Control unit 13
3.2 Scope of Delivery 14
4 Operation 15
4.1 Operating elements 15
4.2 Function buttons 16
4.3 Basic functions 16
4.3.1 Putting the device into operation 16
4.3.2 Switching the device off 18
4.3.3 Putting the device into operation 18
4.3.4 Current flow modes 18
4.3.5 Test mode 19
4.3.6 Select Program 20
4.3.7 Setting the current strength 21
4.4 Advanced functions 23
4.4.1 System settings 23
4.4.2 Setting the display contrast 24
5 Troubleshooting 25
5.1 Warnings 25
5.2 Error messages 26
6 Disposal 27
6.1 Hazardous waste 27
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Contents
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General Information
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1 General Information
1.1 About this Document
Read this Manual completely before putting the device into operation and keep available at all times.
Clarify anything unclear or uncertainties concerning operation with the supplier!
1.2 Validity
This document is valid for:
WeftMaster CUT-iT
1.3 Design features
Various elements in this Manual have design features.
Design features
üRequirement
1. Action step
ðIntermediate result
ðResult
nList
«Menu term»
Navigation path
Caption
Cross-reference [ 7]

Safety
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2 Safety
2.1 Safety Information and Warnings
Safety information and warnings draw attention to hazards and are marked with symbols and signal words
to express the danger level.
DANGER
Indicates an immediate hazardous situation which will result in death or serious
injury.
WARNING
Indicates a potentially hazardous situation which could result in death or serious
injury.
CAUTION
Indicates a potentially hazardous situation which may result in minor oder
moderate injury.
NOTE
Indicates a potentially hazardous situation which may result in damage to
property.
2.1.1 Explanation of Symbols
Warning signs
General warning sign
Warning of electrical voltage
Warning of hot surfaces

Safety
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Mandatory signs
Disable before maintenance or repair (interrupt power supply)
Create a ground connection before using
Disposal sign
Hazardous waste (separate collection of electrical and electronic equipment)
Information symbol
This symbol draws attention to additional information for the operator.
2.2 Intended Use
The device is only intended to separate and melt selvedges of fusible textiles (synthetic or hybrid fabrics)
on weaving machines, especially to separate and melt fabric selvedges or to separate fabrics into strips.
Any other use or use beyond the intended purpose is considered improper. Loepfe Brothers Ltd. is not
liable for any resulting damage.
The device is not suitable for non-fusible yarns, such as pure cotton, pure viscose or
pure new wool!

Safety
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2.3 Target group
The WeftMaster CUT-iT device may only be operated by authorized personnel. The authorized personnel
is qualified when it completes the necessary training, knows the requirements and is authorized for the
assigned task.
2.3.1 Authorized personnel
The WeftMaster CUT-iT manufacturer defines authorized personnel as follows:
n«Operator» and «foreman»
– Qualified and trained to operate WeftMaster CUT-iT.
– Has read and understood the safety regulations.
n«Industrial electrician / installation technician»
– Qualified and trained for all safety checks and installation, maintenance and service guidelines.
– Responsible for WeftMaster CUT-iT installation and maintenance.
– Has read and understood the safety regulations.
n«Service technician»
– Loepfe employee qualified and trained for maintenance and repair of the device or persons
authorized with express permission from Loepfe Brothers Ltd.
2.4 General safety information
nFollow all safety and operating instructions exactly.
nKeep the complete documentation for later reference.
nObserve all warnings on the device and in the documentation of the weaving machine on which this
device is installed or maintained.
nThe WeftMaster CUT-iT and the heat cutters may only be installed by an «industrial electrician /
installation technician» or «service technician».
nCheck that all covers are closed and protective plates attached before starting the weaving machine.
nAny use of the device beyond the intended purpose (see Intended Use [}9]) is considered to be
improper use. In this case, the protection provided by the device cannot be guaranteed.

Safety
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2.5 Safety Concept
This section describes the safety concept of the device for protection against hazards for persons and
damage to property.
1Emergency power off
button
Pressing the emergency power off button on the weaving machine
interrupts operation of the weaving machine and the WeftMaster
CUT-iT
nThe device must be installed in such a way that the power supply
is interrupted when the emergency power off button is pressed!
DANGER
Hazard due to electric shock
Contact with live components and electrical connections leads to serious injuries
or death.
4Installation and maintenance must only be carried out by an «industrial
electrician / installation technician» or «service technician».
4Switch off the main switch of the weaving machine on which the control unit
is installed before opening, modifying or extending the system.
4Disconnect the device from the power supply before maintenance or repair
work.
4Close all device covers before starting the system.
2.5.1 Fire prevention measures
WARNING
Risk of fire due to hot heat cutters
Disregarding the following measures leads to fire risks and therefore risk of injury.
4Installation, setting and operating the WeftMaster CUT-iT only by authorized
personnel.
4Set running and idle temperatures of cutting wires as low as possible.
4Pay utmost attention when blowing-off and cleaning weaving machines with
WeftMaster CUT-iT connected.
4Do not run weaving machines fitted with WeftMaster CUT-iT without
supervision.
4Do not lay objects on or over the heat cutters.
4Have suitable fire extinguishers available in case of fire.

Safety
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2.5.2 Safety precautions when using heat cutters
Control unit and heat cutter
WARNING
Risk of fire due to improper use
Risk of fire and therefore also risk of injury when using the WeftMaster CUT-iT on
non-fusible yarns such as pure cotton, pure viscose or pure new wool.
4Only process fusible textiles (synthetic or hybrid fabrics).
CAUTION
Risk of burns due to hot surfaces.
Touching hot cutting wires can cause serious burns.
4Never touch hot cutting wires at any time.

Product and Function
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3 Product and Function
3.1 Product description
The device is used to separate and melt selvedges of fusible textiles (synthetic or hybrid fabrics) on
weaving machines, especially to separate and melt fabric selvedges or to separate fabrics into strips.
The device can be fitted with various heat cutters. Heat cutter selection depends on fabric material
processing, material transport speed as well as filling and warp densities.
3.1.1 Control unit
The control unit controls the electrical current through the cutting wires of the heat cutter fitted on a
weaving machine. The current strength depends on whether the weaving machine is running or idle.
1
2
WeftMaster CUT-iT control unit
1 Display
2 Function buttons

Product and Function
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The 4 different current flow modes
Mode Description
Off mode Output current is switched off.
Display: «POWER OFF» (switched off)
Standby mode Time in which the weaving machine is idle. Predefined current flows
through the cutting wires during this time. This achieves an optimum out-
put temperature for the machine to run.
Display: «Standby»
Boost mode Weaving machine starting phase. Predefined current flows through the
cutting wires for a limited time. This current heats the cutting wires as
quickly as possible to operating temperature.
Display: «Boost» (startup current)
Run mode Time in which the weaving machine is running. The predefined current
flows through the cutting wires during this time.
Display: «Run» (running current)
The WeftMaster CUT-iT stops the weaving machine in the following cases
nThe power supply is interrupted.
nA system error is detected.
nNo cutting wire is connected.
nA cutting wire is broken (defective).
nA connection cable is interrupted.
nWeftMaster CUT-iT restarts.
3.2 Scope of Delivery
The following components are included in the scope of delivery:
n1 control unit WeftMaster CUT-iT
Optional
nHeat cutters depending on suitability:
– 1 heat cutter F Ceramic
– 1 heat cutter R Ceramic (short)
– 1 heat cutter R Ceramic (long)
– 1 heat cutter FL Ceramic
– 1 heat cutter F Steel
– 1 heat cutter F Steel with foot
nPower supply 24 V DC
nAuxiliary parts according to Spare Parts catalog

Operation
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4 Operation
4.1 Operating elements
1
Operating elements
1 Function buttons

Operation
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4.2 Function buttons
Button Press button Press button for 3 seconds
nSwitch device on
nExit without changing
nDelete error message
Switch device off
Confirm Setting mode (set current strength for «Run»and «Standby»)
Select program
Scroll up Display internal measured values
Scroll down Reset program settings of selected program to standard val-
ues
Test mode
4.3 Basic functions
4.3.1 Putting the device into operation
1. Connect device to power supply.
ðThe following status messages are each displayed for 1 second during the Startup phase.
ðDisplay: «Starting Up»
ðDisplay: «Version: X.X» (software version)
ðDisplay: «Board type»
ðDisplay: «Relay type»

Operation
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ðDisplay: «Address: X #Slaves: X» (Master/Slave address) when using just one unit: Address
(Master) = 0 and number of Slaves = 0
ðor
ðDisplay: «Address: X #Slaves: X» (Master/Slave addresses) when using Master and Slave: Address
(Master) = 0 and number of Slaves e.g. 2 depending on number of Slaves used)
ðor
ðDisplay: «Address: X» (Slave address) when using the control unit as Slave: Address (Slave) = e.g.
2
ðDisplay: «Wiretype»
ðDisplay: «Standby»
ðDevice ready for operation.

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4.3.2 Switching the device off
Cannot be used as emergency power off button.
nEven though the WeftMaster CUT-iT device is switched off:
– The emergency relay (output relay) is active.
– The weaving machine is not stopped.
– Current remains present in the device.
üDevice connected to power supply.
1. Press for 3 seconds.
ðDisplay: «POWER OFF» (switched off)
ðOutput current is switched off.
4.3.3 Putting the device into operation
üDevice connected to power supply.
1. Press.
ðThe following status messages are each displayed for 1 second during the Startup phase (see
Putting the device into operation [}16])
4.3.4 Current flow modes
Display (example)
n1. Line
–«P:4» Program number is displayed.
–«Standby» Current flow mode is displayed.
n2. Line
–«Current: 2.2 A» Output current is displayed.

Operation
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Modes
There are 4 different current flow modes:
n«Standby» (ready for operation)
– The «Standby mode» describes the time in which the weaving machines is idle. Predefined current
flows through the cutter wires during this time.
This achieves an optimum output temperature for the machine to run.
n«WStandby» (Minimum standby time)
– The WeftMaster CUT-iT maintains a minimum standby time ro allow the cutter wires to cool down
when the weaving machine stops.
– If this minimum standby time is not maintained and the «Run command» comes too soon after a
previous run, the current remains in the «WStandby-Modus» for the predefined time and the
standby time is delayed. This minimum time is defined in system parameter 87 (as standard value
with 0).
n«Boost» (start-up current)
– The «Boost mode» describes the weaving machine startup time. The predefined current flows
through the cutter wires for a limited time.
– This current heats the cutter wires as quickly as possible to operating temperature.
n«Run» (running current)
– The «Run mode» describes the time in which the weaving machines is running. The predefined
current flows through the cutter wires during this time.
4.3.5 Test mode
üThe weaving machine is idle.
üWeftMaster CUT-iT is in Standby mode.
1. Press within a maximum time of 1 minute (maximum test time adjustable in system parameter
85).
ðWeftMaster CUT-iT switched to Run mode during the time the button is pressed.

Operation
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4.3.6 Select Program
Ten programs can be saved in system memory (program numbers 1–10).
nEach program contains the values for the Standby and Run current strengths for the specified and
selected cutter wire type.
A new value must be defined when a cutter wire type is changed.
A program can only be selected when the weaving machine is idle.
üThe weaving machine is idle.
1. Press.
2. Press to select the desired program.
3. Press to confirm the selected program.
ðThe selected program is active.
A program can only be selected when the weaving machine is idle.
üThe weaving machine is running.
1. Press.
ðThe following error message is displayed: