Burford 2000 User manual

Copyright © 2020 by Burford®Corp.
Second Edition, Date: April 2016
Manual Part No.
Serial #
ELECTRONIC SERVO
TYER MODEL
2000/2100
128684-M
21575, 21576

SAFETY PRECAUTIONS
As Burford®Corp. strives to promote safety in the maintenance and operation of Burford®
equipment; we request that the following safety procedures be followed, along with any
additional safety procedures set by the customer’s in-plant safety officers or local codes.
1. Read the manual completely before attempting installation or operation of this unit.
2. This machine may contain programs that are password protected. Contact your
supervisor or Burford®Corp. for password.
3. Incoming electrical power must be properly shielded, routed, and grounded. All
safety codes should be followed. Study wiring diagrams before attempting
installation.
4. Disconnect power to equipment before removing any guards or covers. Replace
guards or covers before resuming operation of the unit.
5. Loose clothing, jewelry, and long hair should be considered a safety hazard around
mechanical equipment. Ensure that they will not be entangled in the equipment.
6. Keep clear of moving machine parts. Bodily harm and/or serious injury may result
from contact with moving gears, sprockets, chains or pneumatically controlled
machine components.
7. Do not bypass safety switches.
8. Do not attempt repairs while equipment is running.
9. Use only original equipment parts designed for safe operation of the equipment.
10.Only authorized personnel should be allowed to operate or perform maintenance
on the unit.
11.This unit is not wash-down ready. Do not wash the unit or any of its electrical or
mechanical components, with any form of high pressure or running liquids.
Info symbol indicates useful information to
assist in installation and operation of the unit.
Stop symbol indicates important instructions to
prevent unit damage or adverse effects.
Caution symbol indicates bodily harm may incur
if instructions are not followed.

iii
DISCLAIMER WARNING
The descriptions and specifications contained in this Service Manual were in effect when
this manual was approved for printing. Our policy is one of continuous improvements, and
we do hereby reserve the right to discontinue models at any time, or to change
specifications, prices, or design without notice and without incurring obligations.
Burford
®
Corp. expressly disclaims any liability for damages and/or injuries caused
because of negligence or misuse of its product. Such negligence or misuse includes, but
is not limited to, software/program alteration, removal of guards, faulty wiring due to
improper installation, subjecting the unit to wash-down environments or any physical or
mechanical changes made to a Burford
®
unit, by anyone other than a qualified Burford
®
Technician.
Burford
®
equipment should only be used for the purpose for which it was sold, and should
not be modified in any way without notifying the General Manager of Burford
®
Corp. in
writing of the modification.
The original language for this document is English. Translations to other languages may
not be accurate.

TABLE OF CONTENTS
SAFETY PRECAUTIONS II
DISCLAIMER WARNING III
TABLE OF CONTENTS IV
TABLE OF FLOW CHARTS XI
CHAPTER 1: INTRODUCTION 14
 Specifications 15
 Models 15
 Conveyor Requirements 16
 Bag Neck Length Requirements 17
 Unit Overview 18
 E-Stop Location 19
CHAPTER 2: KEY COMPONENTS 22
 Tyer Head 22
 Control Panel 22
 Needle 23
 Twister Hook 24
 Holder / Shear 25
 Holder / Shear, cont’d 26
 Holder / Shear, cont’d 27
 Bag Switch 28
 Ribbon Dispense Encoder 29
 Ribbon Guide 30
 Gathering Belts 31

v
 Belt Speed Switch 31
 Main Enclosure 32
 Main Disconnect 32
 Ribbon Tension Assembly 33
 Ribbon Tension Spring 33
 Brake 34
 Dancer Arm 35
 Ribbon Drop Sensor 35
 Gathering Brush 36
 Adjustment Knob 36
 Pressure Regulator 37
 Bag Stop 37
 Optional Key Components 38
 Package Detection Sensor 39
 Speed Follower Encoder 40
 Operator Display 41
 Bag Tail Blower 41
 Stand 42
 Conveyor 42
CHAPTER 3: INSTALLATION 44
 Mechanical Installation 44
 Mechanical Installation, cont’d 45
 Mechanical Installation, cont’d 46
 Mechanical Installation, cont’d 47
 Electrical Interconnections 48
 Bagger Enable Circuit (Safety Interlock) 48
 Bagger-Active Circuit 49

 Counter Output / External Counter Output 49
 Installation arrangements 50
CHAPTER 4: OPERATION PROCEDURES 52
 Theory Of Operation 52
 Control Panel 53
 “STOP” pushbutton 54
 “RUN” pushbutton 54
 “THREAD” pushbutton 54
 “MOTORS ENABLED” light 55
 “INITIALIZED” light 55
 “TYER FAULT” light 55
 “BELT SPEED” push wheel switch 56
 Main Enclosure 57
 Package Recognition System 58
 Package Detection System (PDS) 59
 Dual Ribbon Spool System 60
 Ribbon Tension 61
 Changing And Threading The Ribbon 62
 Changing And Threading The Ribbon, cont’d 63
 Changing And Threading The Ribbon,cont’d 64
 Changing And Threading The Ribbon,cont’d 65
 Speed Following Feature 66
 Daily Startup 67
 Daily Startup, cont’d 68

vii
CHAPTER 5: TIMING AND ADJUSTMENTS 70
 Bag Switch Adjustment 70
 Holder Shear Adjustment 71
 Shuttle Bar Alignment 72
 Gathering Belts Tension Adjustment 73
 Gathering Belts Speed Adjustment 74
 Belt Guide Tension Adjustment 75
 Gathering Belts Teeth Mesh 75
 Proximity Sensor Adjustment 76
 Proximity Sensor Adjustment, cont’d 77
 Gathering Brush Tension Adjustment 78
 Gathering Brush Air Adjustments 79
 Ribbon Dispenser Adjustment 79
 Ribbon Dispenser Adjustment, cont’d 80
 Ribbon Dispenser Adjustment, cont’d 81
 Needle Roller Replacement 82
 Needle Roller Replacement, cont’d 83
 Spacing of Twister Hook Shaft to Tip Of Holder Shear 84
 Adjusting Tie Tightness 85
 Nominal Adjustment 86
 Adjusting the Eccentric Ribbon Guide 86
 Adjusting the Belt Pulley 86
 Auxiliary DIP Switch Settings 87
 CPU DIP Switch Settings 88
 Fuse And Circuit Breaker List 89
 Counter Output 90
 PROM Replacement 90

 PROM Replacement, cont’d 91
 PROM Replacement, cont’d 92
CHAPTER 6: COMMUNICATIONS 94
 Terminal Option 94
 Communicating With the Controller 94
 Burford
®
TERMINAL program 95
 Terminal Program in Microsoft Windows version 3.0 or 3.1 96
 Servo Tyer controller and PC communication cable 97
 Servo Tyer Commands 98
 Starting the Servo Tyer 98
 When you start the Servo Tyer, cont’d 99
 TIME and DATE commands 100
 TROUBLE command 100
 QUERY command 101
 4.9.4 QUERY command, cont’d 102
 RESET command 103
 DEBUG command 103
 HOME command 104
 DISPENSE command 104
 DISPENSE command, cont’d 105
 (+) command 105
 (+) command, cont’d 106
CHAPTER 7: TROUBLESHOOTING 108
 Troubleshooting Considerations 108
 Diagnostic LED's 109
 Diagnostic LED's, cont’d 110
 Diagnostic LED's, cont’d 111

ix
 Seven Segment LED Error Codes 112
 Seven Segment LED, Error Codes, cont’d 113
 Seven Segment LED, Error Codes, cont’d 114
 Audible Alarm Codes 115
 Troubleshooting Flow Charts 115
CHAPTER 8: MAINTENANCE 158
 Lubrication 158
 Preventive Maintenance 159
 Daily 159
 Weekly 159
 Monthly 159
 Quarterly 159
 Preventive Maintenance, cont’d 160
 Semi-Annually 160
 Yearly 160
 24 Month 160
 Power Supply Board Fuse Replacement 161
 Operating Voltages 161
CHAPTER 9: TEST PROCEDURES 164
 Motor Encoders Test Procedure 164
 Motor Continuity Test Procedure 165
 Servo Motor Fuses Test Procedure 166
 36 Volt DC Power For Motors Test Procedure 167
 Proximity Switch LEDs Test Procedure 168
 5 And 12 Volt D.C. Power Supply Test Procedure 169
 BCD Switch Test Procedure 170

 Bag Switch Test Procedure 171
 Field Termination Board Relays Test Procedure 172
 Operator Test 173
 Mechanics Test 174
CHAPTER 10: PARTS AND DRAWINGS. 178
 RECOMMENDED SPARE PARTS LIST 178
 Machine Diagrams 178
 Machine Side Diagram 180
 Motor Diagram 181
 Holder Shear Proximity Sensor 182
 Ribbon Drop Proximity Snesonr 183
 Ribbon Dispense Proximity Sensor 184
 Needle Home Proximity Sensor 185
 Twister Hook Proximity Sensor 186
 Main Enclosure 187
 Central Processing Unit board (PN-C01410) 188
 Auxiliary board (PN-C01267) 188
 Field Termination Board (PN-C01299) 188
 Main enclosure relays 189
 Field termination board relays 189
 Auxiliary board relays 189
 Motor Control Diagram 190
 Gathering Brush Power Diagram 191
 DC Power Latch Circuit Diagram 192
 Bagger Enable Circuit Diagram 193

xi
TABLE OF FLOW CHARTS
Flow Chart 0-1 Unit Will Not Power Up And Initialize.......................................................................... 116
Flow Chart 0-2 Gathering Belts Will Not Run ....................................................................................... 117
Flow Chart 0-3 Brush Motor Not Running ............................................................................................ 118
Flow Chart 0-4 Motor For Gathering Brushes Won't Run ...................................................................119
Flow Chart 0-5 Blower Motor Not Running........................................................................................... 120
Flow Chart 0-6 Tyer Not Allowing Bagger To Start .............................................................................121
Flow Chart 0-7 E001 Error Code ............................................................................................................ 122
Flow Chart 0-8 E101 Error Code ............................................................................................................ 123
Flow Chart 0-9 E102 Error Code ............................................................................................................ 124
Flow Chart 0-10 E111 Error Code .......................................................................................................... 125
Flow Chart 0-11 E112 Or E113 Error Code ........................................................................................... 126
Flow Chart 0-12 E114 Error Code .......................................................................................................... 127
Flow Chart 0-13 E115 Or E116 Error Code ........................................................................................... 128
Flow Chart 0-14 E117 Error Code .......................................................................................................... 129
Flow Chart 0-15 E121 Error Code .......................................................................................................... 130
Flow Chart 0-16 E122 Or E123 Error Code ........................................................................................... 131
Flow Chart 0-17 E124 Error Code .......................................................................................................... 132
Flow Chart 0-18 E125 Or E126 Error Code ........................................................................................... 133
Flow Chart 0-19 E127 Error Code .......................................................................................................... 134
Flow Chart 0-20 E131 Error Code .......................................................................................................... 135
Flow Chart 0-21 E132 Or E133 Error Code ........................................................................................... 136
Flow Chart 0-22 E134 Error Code .......................................................................................................... 137
Flow Chart 0-23 E135 And E136 Error Code......................................................................................... 138
Flow Chart 0-24 E137 Error Code .......................................................................................................... 139
Flow Chart 0-25 E146 Error Code .......................................................................................................... 140
Flow Chart 0-26 E151-169 Error Codes................................................................................................. 141
Flow Chart 0-27 E201 Error Code .......................................................................................................... 142
Flow Chart 0-28 E300 Error Code .......................................................................................................... 143
Flow Chart 0-29 Excessive Ribbon Drops ............................................................................................ 144
Flow Chart 0-30 Ribbon Drops During Homing Sequence .................................................................145
Flow Chart 0-31 Needle Punches Holes Through Bag Neck .............................................................. 146
Flow Chart 0-32 Bags Drag Hard Against Flight .................................................................................. 147
Flow Chart 0-33 Tyer Aborts Cycle On Good Package .......................................................................148
Flow Chart 0-34 Excessive Belt Fuse Failure....................................................................................... 149
Flow Chart 0-35 Twist Tie Breaks During Tying...................................................................................150
Flow Chart 0-36 Ties Not Centered On Product................................................................................... 151
Flow Chart 0-37 Two Packages Tied Together.....................................................................................152
Flow Chart 0-38 Ribbon Wraps Around Hook Shaft............................................................................153
Flow Chart 0-39 Holes Being formed In Bag ........................................................................................ 154
Flow Chart 0-40 Excessive Wear On Gathering Belts .........................................................................155

Chapter 1
Introduction

14 Chapter 1
CHAPTER 1: INTRODUCTION
The Burford
®
2000/2100 Series Electronic Servo Tyers are designed to close plastic bags
with twist tie ribbon in a wide variety of automatic packaging applications. The Servo Tyer
uses a microprocessor to control and coordinate the motion of four servo motors, which
perform the twist tying function. This machine is normally installed onto a bagger or
conveyor and interfaced into the existing control system to create a complete package
closing system.
Package Recognition System
Automatic Timing
Modular Design
Quick, Easy Threading
Multiple Applications
User Friendly
New Quieter Brush Design
No Lubrication Requirements
One Model for All Systems
Model 2000 with Optional
Digital Display

Introduction 15
Specifications
ELECTRICAL
110 V
AC
, 50/60 H
Z
, 1
Φ, 15 A
220 V
AC
, 50/60 H
Z
, 1 Φ, 15
A
220 V
AC
, 50/60 H
Z
, 3 Φ, 15
A
380/460 V
AC
, 50/60 H
Z
, 1 Φ, 15
A
380/460 V
AC
, 50/60 H
Z
, 3 Φ, 15
A
Air:
60 PSI
Models
MODELS
21
00 P
roduct flow moves
left to right
when viewing front of unit
.
20
00 P
roduct flow moves
right to left
when viewing front of unit
.
Product Flow

16 Chapter 1
Conveyor Requirements
Depending on conveyor speed and flight spacing, the Servo Tyer is capable of operating
speeds of up to 100 packages per minute. The Servo Tyer operates on a nominal 110
Volts, 60 Hz, single-phase alternating current. 15-amp service is recommended. Servo
Tyer connections for bagger interlock and safety circuits are provided standard. A counter
signal is provided which can be used in conjunction with an external counter (not
provided).
On flighted conveyors, flight spacing up to 18” may be used, but the tyer can have a
higher production rate (packages per minute) with a small flight spacing, such as nine
inches. This tyer can also be used on belted conveyors that provide consistent spacing.
All referenced measurements are in inches except as noted.
Minimum size for a service transformer must be rated at least 1.8KVA

Introduction 17
Bag Neck Length Requirements
The formula below is provided in the event that you are developing a new product
package and need to calculate a bag neck length for your product. Please consult a
reliable package manufacturer for your specific needs or contact Burford
®
Corp. if we can
be of assistance.
1. Measure the diagonal across the end of the product.
2. Take one-half of the diagonal measurement and add 3 inches (76mm) to determine
the required length of the bag neck.
Short bag neck lengths may cause excessive package jams.

18 Chapter 1
Unit Overview
Dancer Arm
Ribbon Tension Spring
Digital Display
Brush Assembly Main Disconnect
Main Enclosure
Ribbon Assembly E-stop

Introduction 19
E-Stop Location
Below are the locations for the Emergency Stops (E-Stop) and the Main Disconnect on
the unit when on a stand. The E-Stop is located on the user interface panel of the tyer
head. The Main Disconnect is located on the Electrical Panel. The operators should
become familiar with these locations.
Below are the locations for the Emergency Stops (E-Stop) and the Main Disconnect on a
standard unit. The E-Stop and the Main Disconnect are located on the Main Enclosure.