Danfoss VLT FC 103 User manual

MAKING MODERN LIVING POSSIBLE
Instruction Manual
VLT®Refrigeration Drive FC 103
1.1–90 kW
www.danfoss.com/drives

Safety
WARNING
HIGH VOLTAGE!
Adjustable frequency drives contain high voltage when
connected to AC line power. Installation, start-up, and
maintenance should be performed by qualified
personnel only. Failure to perform installation, start-up,
and maintenance by qualified personnel could result in
death or serious injury.
High Voltage
Adjustable frequency drives are connected to hazardous
AC line voltage. Extreme care should be taken to protect
against shock. Only trained personnel familiar with
electronic equipment should install, start, or maintain this
equipment.
WARNING
UNINTENDED START!
When the adjustable frequency drive is connected to AC
line power, the motor may start at any time. The
adjustable frequency drive, motor, and any driven
equipment must be in operational readiness. Failure to
be in operational readiness when the adjustable
frequency drive is connected to AC line power could
result in death, serious injury, equipment, or property
damage.
Unintended Start
When the adjustable frequency drive is connected to the
AC line power, the motor may be started by means of an
external switch, a serial bus command, an input reference
signal, or a cleared fault condition. Use appropriate
cautions to guard against an unintended start.
WARNING
DISCHARGE TIME!
Adjustable frequency drives contain DC link capacitors
that can remain charged even when the adjustable
frequency drive is not powered. To avoid electrical
hazards, disconnect AC line power, any permanent
magnet type motors, and any remote DC link power
supplies, including battery backups, UPS and DC link
connections to other adjustable frequency drives. Wait
for the capacitors to fully discharge before performing
any service or repair work. The wait time required is
listed in the Discharge Time table. Failure to wait for the
specified period of time after power has been removed
to do service or repair could result in death or serious
injury.
Voltage [V] Minimum waiting time [minutes]
4 15
200–240 1.5–5 hp [1.1-3.7 kW] 7.5–50 hp [5.5–37 kW]
380–480 1.5–10 hp [1.1–7.5
kW]
15–100 hp [11–75 kW]
525–600 1–10 hp [0.75–7.5
kW]
15–100 hp [11–75 kW]
High voltage may be present even when the warning LEDs are
off!
Discharge Time
Symbols
The following symbols are used in this manual.
WARNING
Indicates a potentially hazardous situation which, if not
avoided, could result in death or serious injury.
CAUTION
Indicates a potentially hazardous situation which, if not
avoided, may result in minor or moderate injury. It may
also be used to alert against unsafe practices.
CAUTION
Indicates a situation that may result in equipment or
property damage-only accidents.
NOTICE!
Indicates highlighted information that should be
observed in order to avoid mistakes or operate
equipment at less than optimal performance.
Approvals
NOTICE!
Imposed limitations on the output frequency
(due to export control regulations):
As of software version 1.10, the output frequency of the
adjustable frequency drive is limited to 590 Hz.
Safety Instruction Manual
MG16E222 Danfoss A/S © Rev. 2014-02-10 All rights reserved.

Safety Instruction Manual
Danfoss A/S © Rev. 2014-02-10 All rights reserved. MG16E222

Contents
1 Introduction 4
1.1 Purpose of the Manual 6
1.2 Product Overview 6
1.3 Internal Adjustable Frequency Drive Controller Functions 6
1.4 Frame Sizes and Power Ratings 7
2 Installation 8
2.1 Installation Site Checklist 8
2.2 Pre-installation Checklist 8
2.3 Mechanical Installation 8
2.3.1 Cooling 8
2.3.2 Lifting 9
2.3.3 Mounting 9
2.3.4 Tightening Torques 10
2.4 Electrical Installation 10
2.4.1 Requirements 13
2.4.2 Grounding Requirements 14
2.4.2.1 Leakage Current (>3.5 mA) 14
2.4.2.2 Grounding Using Shielded Cable 15
2.4.3 Access 15
2.4.4 Motor Connection 16
2.4.4.1 Motor Connection for A2 and A3 17
2.4.4.2 Motor Connection for A4 and A5 18
2.4.4.3 Motor Connection for B1 and B2 18
2.4.4.4 Motor Connection for C1 and C2 19
2.4.5 AC Line Power Connection 19
2.4.5.1 AC Line Input Connection for A2 and A3 20
2.4.5.2 AC Line Input Connection for A4 and A5 21
2.4.5.3 AC Line Input Connection for B1 and B2 22
2.4.5.4 AC Line Input Connection for C1 and C2 22
2.4.6 Control Wiring 23
2.4.6.1 Control Terminal Types 23
2.4.6.2 Wiring to Control Terminals 24
2.4.6.3 Using Shielded Control Cables 24
2.4.6.4 Jumper Terminals 12 and 27 25
2.4.6.5 Terminal 53 and 54 Switches 25
2.4.6.6 Terminal 37 26
Contents Instruction Manual
MG16E222 Danfoss A/S © Rev. 2014-02-10 All rights reserved.

2.4.7 Serial Communication 29
3 Start-up and Functional Test 30
3.1 Pre-start 30
3.1.1 Safety Inspection 30
3.2 Applying Power 32
3.3 Basic Operational Programming 32
3.3.1 Set-up Wizard 32
3.4 Asynchronous Motor Set-up 38
3.5 Automatic Motor Adaptation 38
3.6 PM Motor Set-up in VVCplus 38
3.7 Check Motor Rotation 40
3.8 Local Control Test 40
3.9 System Start-up 41
4 User Interface 42
4.1 Local Control Panel 42
4.1.1 LCP Layout 42
4.1.2 Setting LCP Display Values 43
4.1.3 Display Menu Keys 43
4.1.4 Navigation Keys 44
4.1.5 Operation Keys 44
4.2 Backup and Copying Parameter Settings 45
4.2.1 Uploading Data to the LCP 45
4.2.2 Downloading Data from the LCP 45
4.3 Restoring Default Settings 45
4.3.1 Recommended Initialization 46
4.3.2 Manual Initialization 46
4.4 How to Operate 46
4.5 Remote Programming with MCT 10 Set-up Software 46
5 Programming 47
5.1 Introduction 47
5.2 Programming Example 47
5.3 Control Terminal Programming Examples 49
5.4 International/North American Default Parameter Settings 49
5.5 Parameter Menu Structure 50
5.5.1 Quick Menu Structure 51
5.5.2 Main Menu Structure 53
Contents Instruction Manual
Danfoss A/S © Rev. 2014-02-10 All rights reserved. MG16E222

6 Application Set-up Examples 57
6.1 Introduction 57
6.2 Set-up Examples 57
6.2.1 Compressor 57
6.2.2 Single or Multiple Fans or Pumps 58
6.2.3 Compressor Pack 59
7 Status Messages 60
7.1 Status Display 60
7.2 Status Message Definitions 60
8 Warnings and Alarms 63
8.1 System Monitoring 63
8.2 Warning and Alarm Types 63
8.3 Warning and Alarm Displays 63
8.4 Warning and Alarm Definitions 64
9 Basic Troubleshooting 73
9.1 Start-up and Operation 73
10 Specifications 76
10.1 Power-dependent Specifications 76
10.2 General Technical Data 85
10.3 Fuse Specifications 91
10.3.1 Branch Circuit Protection Fuses 91
10.3.2 Substitute Fuses for 240 V 93
10.4 Connection Tightening Torques 93
Index 94
Contents Instruction Manual
MG16E222 Danfoss A/S © Rev. 2014-02-10 All rights reserved.

1 Introduction
1
23
4
5
6
7
8
9
10
11
12
13
14
8
15
16
17
18
130BB492.10
Figure 1.1 Exploded View Frame Size A
1LCP 10 Motor output terminals 96 (U), 97 (V), 98 (W)
2 RS-485 serial bus connector (+68, -69) 11 Relay 2 (01, 02, 03)
3 Analog I/O connector 12 Relay 1 (04, 05, 06)
4 LCP input plug 13 Brake (-81, +82) and load sharing (-88, +89) terminals
5 Analog switches (A53), (A54) 14 Line power input terminals 91 (L1), 92 (L2), 93 (L3)
6 Cable strain relief/PE ground 15 USB connector
7 Decoupling plate 16 Serial bus terminal switch
8 Grounding clamp (PE) 17 Digital I/O and 24 V power supply
9 Shielded cable grounding clamp and strain relief 18 Control cable cover plate
Table 1.1 Legend to Figure 1.1
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1
2
3
4
5
6
7
8
9
10
11
12 13
16
17
18
19
14
15
FANMOUNTING
QDF-30
DC- DC+
Removejumper to activate Safe Stop
Max.24 Volt !
12 13 18 19 27 29 32 33 20
61 68 39 42 50 53 54
06 05 04 03 02 01
130BB493.10
Figure 1.2 Exploded View Frame Sizes B and C
1LCP 11 Relay 2 (04, 05, 06)
2 Cover 12 Lifting ring
3 RS-485 serial bus connector 13 Mounting slot
4 Digital I/O and 24 V power supply 14 Grounding clamp (PE)
5 Analog I/O connector 15 Cable strain relief/PE ground
6 Cable strain relief/PE ground 16 Brake terminal (-81, +82)
7 USB connector 17 Load sharing terminal (DC bus) (-88, +89)
8 Serial bus terminal switch 18 Motor output terminals 96 (U), 97 (V), 98 (W)
9 Analog switches (A53), (A54) 19 Line power input terminals 91 (L1), 92 (L2), 93 (L3)
10 Relay 1 (01, 02, 03)
Table 1.2 Legend to Figure 1.2
Introduction Instruction Manual
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1.1 Purpose of the Manual
This manual is intended to provide detailed information for
the installation and start-up of the adjustable frequency
drive. chapter 2 Installation provides requirements for
mechanical and electrical installation, including input,
motor, control and serial communications wiring and
control terminal functions. chapter 3 Start-up and Functional
Test provides detailed procedures for start-up, basic
operational programming, and functional testing. The
remaining chapters provide supplementary details. These
details include user interface, detailed programming,
application examples, start-up troubleshooting, and specifi-
cations.
1.2 Product Overview
An adjustable frequency drive is an electronic motor
controller that converts AC line power input into a variable
AC waveform output. The frequency and voltage of the
output are regulated to control the motor speed or torque.
The adjustable frequency drive can vary the speed of the
motor in response to system feedback, such as changing
temperature or pressure for controlling fan, compressor, or
pump motors. The adjustable frequency drive can also
regulate the motor by responding to remote commands
from external controllers.
In addition, the adjustable frequency drive monitors the
system and motor status, issues warnings or alarms for
fault conditions, starts and stops the motor, optimizes
energy efficiency, and offers many more control,
monitoring, and efficiency functions. Operation and
monitoring functions are available as status indications to
an outside control system or serial communication
network.
1.3 Internal Adjustable Frequency Drive
Controller Functions
Figure 1.3 is a block diagram of the adjustable frequency
drive's internal components. See Table 1.3 for their
functions.
Figure 1.3 Adjustable Frequency Drive Block Diagram
Area Title Functions
1 Line power input
•Three-phase AC line power
supply to the adjustable
frequency drive
2 Rectifier
•The rectifier bridge converts
the AC input to DC current to
supply inverter power
3 DC bus •Intermediate DC bus circuit
handles the DC current
4 DC reactors
•Filter the intermediate DC
circuit voltage
•Prove line transient protection
•Reduce RMS current
•Raise the power factor
reflected back to the line
•Reduce harmonics on the AC
input
5 Capacitor bank
•Stores the DC power
•Provides ride-through
protection for short power
losses
6 Inverter
•Converts the DC into a
controlled PWM AC waveform
for a controlled variable
output to the motor
7 Output to motor •Regulated three-phase output
power to the motor
Introduction Instruction Manual
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Area Title Functions
8 Control circuitry
•Input power, internal
processing, output, and motor
current are monitored to
provide efficient operation
and control
•User interface and external
commands are monitored and
performed
•Status output and control can
be provided
Table 1.3 Legend to Figure 1.3
1.4 Frame Sizes and Power Ratings
Frame Size (hp [kW])
[V] A2 A3 A4 A5 B1 B2 B3 B4 C1 C2 C3 C4
200–240 1.5–3
[1.1–
2.2]
4–5
[3.0–3.7]
1.5–3
[1.1–2.2]
1.5–5
[1.1–3.7]
7.5–15
[5.5–11]
20 [15] 7.5–15
[5.5–11]
20–25
[15–18.5]
25–40
[18.5–30]
50–60
[37–45]
30–40
[22–30]
50–60
[37–45]
380–480 1.5–5
[1.1–
4.0]
7.5–10
[5.5–7.5]
1.5–5
[1.1–4.0]
1.5–10
[1.1–7.5]
15–25
[11–18.5]
30–40
[22–30]
15–25
[11–18.5]
30–50
[22–37]
50–75
[37–55]
100–125
[75–90]
60–75
[45–55]
100–125
[75–90]
525–600 N/A 1.5–10
[1.1–7.5]
N/A 1.5–10
[1.1–7.5]
15–25
[11–18.5]
30–40
[22–30]
15–25
[11–18.5]
30–50
[22–37]
50–75
[37–55]
100–125
[75–90]
60–75
[45–55]
100–125
[75–90]
Table 1.4 Frame Sizes and Power Ratings
Introduction Instruction Manual
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2 Installation
2.1 Installation Site Checklist
•The adjustable frequency drive relies on the
ambient air for cooling. Observe the limitations
on ambient air temperature for optimal
operation.
•Ensure that the installation location has sufficient
support strength to mount the adjustable
frequency drive.
•Keep the adjustable frequency drive interior free
from dust and dirt. Ensure that the components
stay as clean as possible. In construction areas,
provide a protective covering. Optional IP55
(TYPE 12) or IP66 (NEMA 4) enclosures may be
necessary.
•Keep the manual, drawings, and diagrams
accessible for detailed installation and operation
instructions. It is important that the manual is
available for equipment operators.
•Locate equipment as near to the motor as
possible. Keep motor cables as short as possible.
Check the motor characteristics for actual
tolerances. Do not exceed
•300 m (1,000 ft) for unshielded motor
leads.
•150 m (500 ft) for shielded cable.
2.2 Pre-installation Checklist
•Compare the model number of unit on the
nameplate to what was ordered to verify the
proper equipment.
•Ensure each of the following are rated for the
same voltage:
Line power
Adjustable frequency drive
Motor
•Ensure that the adjustable frequency drive output
current rating is equal to or greater than motor
full load current for peak motor performance.
Motor size and adjustable frequency
drive power must match for proper
overload protection
If adjustable frequency drive rating is
less than motor, full motor output
cannot be achieved
2.3 Mechanical Installation
2.3.1 Cooling
•To provide cooling airflow, mount the unit to a
solid flat surface or to the optional backplate (see
chapter 2.3.3 Mounting)
•Top and bottom clearance for air cooling must be
provided. Generally, 100–225 mm (4–10 in) is
required. See Figure 2.1 for clearance
requirements
•Improper mounting can result in overheating and
reduced performance
•Derating for temperatures starting between 104
°F [40 °C] and 122 °F [50 °C] and elevation 3300
ft [1000 m] above sea level must be considered.
See the equipment Design Guide for detailed
information
Installation Instruction Manual
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a
b
130BA419.10
Figure 2.1 Top and Bottom Cooling Clearance
Enclosure A2-A5 B1-B4 C1, C3 C2, C4
a/b (inch
[mm]) 100 200 200 225
Table 2.1 Minimum Airflow Clearance Requirements
2.3.2 Lifting
•Check the weight of the unit to determine a safe
lifting method
•Ensure that the lifting device is suitable for the
task
•If necessary, plan for a hoist, crane, or forklift with
the appropriate rating to move the unit
•For lifting, use hoist rings on the unit, where
provided
2.3.3 Mounting
•Mount the unit vertically.
•The adjustable frequency drive allows side by
side installation.
•Ensure that the strength of the mounting location
will support the unit weight.
•Mount the unit onto a solid flat surface or onto
the optional backplate to provide cooling airflow
(see Figure 2.2 and Figure 2.3).
•Improper mounting can result in overheating and
reduced performance.
•Use the slotted mounting holes on the unit for
wall mounting, when provided.
130BA219.10
A
Figure 2.2 Proper Mounting with Backplate
Item A in Figure 2.2 and Figure 2.3 is a backplate properly
installed for required airflow to cool the unit.
130BA228.11
1
Figure 2.3 Proper Mounting with Railings
Installation Instruction Manual
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22

NOTICE!
Backplate is needed when mounted on railings.
2.3.4 Tightening Torques
See chapter 10.4 Connection Tightening Torques for proper tightening specifications.
2.4 Electrical Installation
This section contains detailed instructions for wiring the adjustable frequency drive. The following tasks are described:
•Wiring the motor to the adjustable frequency drive output terminals
•Wiring the AC line power to the adjustable frequency drive input terminals
•Connecting control and serial communication wiring
•After power has been applied, checking input and motor power; programming control terminals for their intended
functions
Installation Instruction Manual
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Figure 2.4 shows a basic electrical connection.
Figure 2.4 Basic Wiring Schematic Drawing
NOTICE!
For additional information, see Table 2.5.
Installation Instruction Manual
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1
2
3
4
5
6
7
8
PE
U
V
W
9
L1
L2
L3
PE
130BB607.10
10
Figure 2.5 Typical Electrical Connection
1PLC 6 Min. 7.9 in [200 mm] between control cables, motor and line
power
2 Adjustable frequency drive 7 Motor, 3-phase and PE
3 Output contactor (generally not recommended) 8 Line power, 3-phase and reinforced PE
4 Grounding rail (PE) 9 Control wiring
5 Cable insulation (stripped) 10 Equalizing min. 0.025 in2 [16 mm2]
Table 2.2
NOTICE!
Use min. 0.016 in2[10 mm2] cables for optimal EMC.
Installation Instruction Manual
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2.4.1 Requirements
WARNING
EQUIPMENT HAZARD!
Rotating shafts and electrical equipment can be
hazardous. All electrical work must conform to national
and local electrical codes. It is strongly recommended
that installation, start-up, and maintenance be
performed only by trained and qualified personnel.
Failure to follow these guidelines could result in death or
serious injury.
CAUTION
WIRING ISOLATION!
Run input power, motor wiring and control wiring in
three separate metallic conduits or use separated
shielded cable for high frequency noise isolation. Failure
to isolate power, motor and control wiring could result
in less than optimum adjustable frequency drive and
associated equipment performance.
For your safety, comply with the following requirements.
•Electronic controls equipment is connected to
hazardous AC line voltage. Extreme care should
be taken to protect against electrical hazards
when applying power to the unit.
•Run motor cables from multiple adjustable
frequency drives separately. Induced voltage from
output motor cables run together can charge
equipment capacitors even with the equipment
turned off and locked out.
Overload and Equipment Protection
•An electronically activated function within the
adjustable frequency drive provides overload
protection for the motor. The overload calculates
the level of increase to activate timing for the trip
(controller output stop) function. The higher the
current draw, the quicker the trip response. The
overload provides Class 20 motor protection. See
chapter 8 Warnings and Alarms for details on the
trip function.
•Because the motor wiring carries high frequency
current, it is important that wiring for line power,
motor power, and control is run separately. Use
metallic conduit or separated shielded wire.
Failure to isolate power, motor, and control
wiring could result in less than optimum
equipment performance. See Figure 2.6.
Stop
Start
Speed
Control
Line
Power
Separate Conduit
Motor
130BB447.10
Figure 2.6 Proper Electrical Installation Using Conduit
•All adjustable frequency drives must be provided
with short-circuit and overcurrent protection.
Input fusing is required to provide this
protection, see Figure 2.7. If not factory supplied,
fuses must be provided by the installer as part of
installationinstallation. See maximum fuse ratings
in chapter 10.1 Power-dependent Specifications.
L1
L1
L2
L2
L3
L3
2
91 92 93
1
130BB460.11
Figure 2.7 Adjustable Frequency Drive Fuses
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Wire Type and Ratings
•All wiring must comply with local and national
regulations regarding cross-section and ambient
temperature requirements.
•Danfoss recommends that all power connections
be made with a minimum 167 °F [75 °C] rated
copper wire.
•See chapter 10.1 Power-dependent Specifications
for recommended wire sizes.
2.4.2 Grounding Requirements
WARNING
GROUNDING HAZARD!
For operator safety, it is important to ground the
adjustable frequency drive properly in accordance with
national and local electrical codes as well as instructions
contained within this document. Ground currents are
higher than 3.5 mA. Failure to ground the adjustable
frequency drive properly could result in death or serious
injury.
NOTICE!
It is the responsibility of the user or certified electrical
installer to ensure correct grounding of the equipment in
accordance with national and local electrical codes and
standards.
•Follow all local and national electrical codes to
ground electrical equipment properly
•Proper protective grounding for equipment with
ground currents higher than 3.5 mA must be
established, see chapter 2.4.2.1 Leakage Current
(>3.5 mA)
•A dedicated ground wire is required for input
power, motor power and control wiring
•Use the clamps provided with the equipment for
proper ground connections
•Do not ground one adjustable frequency drive to
another in a “daisy chain” fashion
•Keep the ground wire connections as short as
possible
•Using high-strand wire to reduce electrical noise
is recommended
•Follow the motor manufacturer wiring
requirements
2.4.2.1 Leakage Current (>3.5 mA)
Follow national and local codes regarding protective
grounding of equipment with a leakage current > 3.5 mA.
Adjustable frequency drive technology implies high
frequency switching at high power. This will generate a
leakage current in the ground connection. A fault current
in the adjustable frequency drive at the output power
terminals might contain a DC component which can
charge the filter capacitors and cause a transient ground
current. The ground leakage current depends on various
system configurations including RFI filtering, shielded
motor cables, and adjustable frequency drive power.
EN/IEC61800-5-1 (Power Drive System Product Standard)
requires special care if the leakage current exceeds 3.5 mA.
Grounding must be reinforced in one of the following
ways:
•Ground wire of at least 0.0155 in2[10 mm2]
•Two separate ground wires both complying with
the dimensioning rules
See EN 60364-5-54 § 543.7 for further information.
Installation Instruction Manual
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Using RCDs
Where residual current devices (RCDs), also known as
ground leakage circuit breakers (GLCBs), are used, comply
with the following:
Use RCDs of type B only which are capable of
detecting AC and DC currents
Use RCDs with an inrush delay to prevent faults
due to transient ground currents
Dimension RCDs according to the system configu-
ration and environmental considerations
2.4.2.2 Grounding Using Shielded Cable
Grounding clamps are provided for motor wiring (see
Figure 2.8).
130BA266.10
+DC
BR- B
MAINS
L1 L2 L3
91 92 93
RELAY 1 RELAY 2
99
- LC -
UVW
MOTOR
Figure 2.8 Grounding with Shielded Cable
2.4.3 Access
CAUTION
Device damage through contamination
Do not leave the adjustable frequency drive uncovered.
•Remove access cover plate with a screwdriver.
See Figure 2.9.
•Or remove front cover by loosening attaching
screws. See Figure 2.10.
130BT248.10
Figure 2.9 Control Wiring Access for A2, A3, B3,
B4, C3 and C4 Enclosures
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130BT334.10
Figure 2.10 Control Wiring Access for A4, A5, B1,
B2, C1 and C2 Enclosures
See Table 2.3 before tightening the covers.
Frame IP20 IP21 IP55 IP66
A4/A5 - - 2 2
B1 - * 2.2 2.2
B2 - * 2.2 2.2
C1 - * 2.2 2.2
C2 - * 2.2 2.2
* No screws to tighten
- Does not exist
Table 2.3 Tightening Torques for Covers (Nm)
2.4.4 Motor Connection
WARNING
INDUCED VOLTAGE!
Run output motor cables from multiple adjustable
frequency drives separately. Induced voltage from
output motor cables run together can charge equipment
capacitors even with the equipment turned off and
locked out. Failure to run output motor cables separately
could result in death or serious injury.
•For maximum wire sizes, see chapter 10.1 Power-
dependent Specifications
•Comply with local and national electrical codes
for cable sizes
•Motor wiring knockouts or access panels are
provided at the base of IP21 and higher
(NEMA1/12) units
•Do not install power factor correction capacitors
between the adjustable frequency drive and the
motor
•Do not wire a starting or pole-changing device
between the adjustable frequency drive and the
motor
•Connect the 3-phase motor wiring to terminals
96 (U), 97 (V), and 98 (W)
•Ground the cable in accordance with grounding
instructions provided
•Torque terminals in accordance with the
information provided in chapter 10.4 Connection
Tightening Torques
•Follow the motor manufacturer wiring
requirements
Figure 2.11, Figure 2.12 and Figure 2.13 represent line power
input, motor, and grounding for basic adjustable frequency
drives. Actual configurations vary with unit types and
optional equipment.
130BA266.10
+DC
BR- B
MAINS
L1 L2 L3
91 92 93
RELAY 1 RELAY 2
99
- LC -
UVW
MOTOR
Figure 2.11 Motor, Line Power and Ground Wiring for Frame
Size A
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