GW Instek PHX 60-100 User manual

Programmable DC Power Supply
PHX-D Series
User MANUAL
ISO-9001 CERTIFIED MANUFACTURER

This manual contains proprietary information which is protected by copyright. All rights are reserved. No part of this
manual may be photocopied, reproduced or translated to another language without prior written consent of Good Will
Corporation.
The information in this manual was correct at the time of printing. However, Good Will continues to improve its products
and therefore reserves the right to change the specifications, equipment, and maintenance procedures at any time without
notice.
Good Will Instrument Co., Ltd.
No. 7-1, Jhongsing Rd., Tucheng Dist., New Taipei City 236, Taiwan.

TABLE OF CONTENTS
3
SAFETY INSTRUCTIONS ...............................5
For your safety...................................................6
ABOUT THIS MACHINE ..................................7
Features..............................................................8
Part Names and Functions................................9
PREPARATION AND CONNECTION.............16
Unpacking.........................................................16
Placement.........................................................17
Connecting the Power Supply........................18
Connecting the Input Power Source...............19
Connecting Loads (PHX 30-200 and 60V Models)
...........................................................................21
Attaching the Output Terminal Cover.............23
Connecting Loads (PHX 30-400 only) ............25
Attaching the Output Terminal Cover.............26
Connecting Loads (PHX 500V and 1000V
Models) .............................................................28
Attaching the Output Terminal Cover.............30
BASIC USAGE...............................................32
Startup Display.................................................32
Default Settings................................................33
Returning Factory Settings.............................33
Backing-Up Settings........................................33
Operating as Constant Current Power Supply36
Remote Sensing...............................................38
For PHX 30-400: ............................................38
For PHX 30-200, 60-100 and PHX 60-200:....39
For PHX 500-12 and PHX 500-24:.................40
For PHX 1000-6 and PHX 1000-12:...............41
Function Settings.............................................42
Setting Functions.............................................42
Settings Items List...........................................43
Setting Output ON/OFF Toggle Mode.............48
USEFUL FUNCTIONS ...................................49
Over Voltage Protection (OVP) .......................49
Setting/Canceling Over Voltage Protection ....49
Over Current Protection (OCP).......................51
Setting/Canceling Over Current Protection ....51
Setting Operation during Alarm......................53
Error Codes......................................................54
Memory.............................................................55
Saving in Memory...........................................55
Loading from Memory ....................................55
Panel Memory Savable Settings ....................56
Startup Mode Selection...................................57
Variable Slew Rate...........................................58
Sequential ON/OFF..........................................60
Key Lock...........................................................63
Key Lock Settings...........................................63
Variable Internal Resistance ...........................64
Measurement Display Smoothing ..................65
Linearity Compensation..................................66
Setting Beep Sound.........................................67
USING IN DIGITAL DATA COMMUNICATION68
Summary ..........................................................68
Multiple Connections ......................................69
Serial Port Settings..........................................70
Command Send Interval..................................71
Accessing.........................................................72
Access Procedure..........................................72
Communication with Multiple Connections.....73
Communication Commands...........................74
PHX Standard Commands.............................74
PHX Standard Command Format...................74
PHX Standard Command Details...................77
IEEE488.2 Common Command .................77
SCPI Command..........................................78
ADDRess Level..........................................78
ALM Level ..................................................79
OUTPut Level.............................................81
MEASure Level...........................................84
SOURce Level............................................87
STATus Level..............................................95
SYSTem Level............................................97
PHX Compatible Commands .......................107
PHX-compatible Command Format .............108
PHX-compatible Command Group Sending.108
Alarm Response Trigger Factors of
PHX-compatible Commands........................108
Delimiter of PHX-compatible Command.......108
PHX-compatible Command Details..............109
PHX-compatible Read-Back Commands ..... 112
USING IN SERIES/PARALLEL OPERATION115
Parallel Connection....................................... 115
Connection................................................... 116
Operation..................................................... 116
Error Codes.................................................. 117
Series Operation (Excluding PHX 1000-6/12)118
Connection................................................... 119
Operation.....................................................120
CONTROLLING WITH EXTERNALANALOG &
CONTACT SIGNALS ...................................123
Using External Control Terminals ................123
External Control Connector Terminal List (30V,
60V , 500V models only)..............................125
Insulation Control Connector Terminal List
(1000V models only)....................................125
Uses of Terminals.........................................125
Toggling Output ON/OFF with External Contacts
.........................................................................126
Toggling Output ON/OFF with Insulation
External Contacts ..........................................128
TRIP Operation with External Contacts .......130
TRIP Operation with Insulation External
Contacts .........................................................131
Output Voltage Control..................................132
Output Voltage Control with External Resistance
.....................................................................132
1. Output Voltage Control with External
Resistance (A)..........................................132
2. Output Voltage Control with External

PHX-D Series
4
Resistance (B)..........................................134
3. Output Voltage Control with External
Resistance (C)..........................................135
Output Voltage Control with External Voltage136
Output Voltage Control with Insulation External
Voltage .........................................................137
Output Current Control .................................138
Output Current Control via External Resistance
.....................................................................138
1. Output Current Control via External
Resistance (A)..........................................138
2. Output Current Control via External
Resistance(B)...........................................140
3. Output Current Control via External
Resistance(C)...........................................141
Output Current Control via External Voltage 142
Output Current Control with Insulation External
Voltage .........................................................143
Analog Output Monitor..................................144
Output Voltage Monitor.................................144
Output Current Monitor.................................144
Insulation Analog Output Monitor................145
Insulation, Output Voltage Monitor ...............145
Insulation, Output Current Monitor ...............145
Status Output .................................................146
Output Circuit ...............................................146
Status List.....................................................146
Status Output Electric Specifications............146
LEVEL_ALM1 Settings.................................147
SPECIAL LOADS.........................................148
Loads with Reverse Current .........................148
Pulse Current Loads......................................149
Connection to Secondary Battery................149
MAINTENANCE...........................................151
Warranty Period .............................................151
Maintenance Service .....................................151
Daily Maintenance and Inspection ...............151
Lifespan of Parts............................................151
Periodical Check and Replacement of Air Filter
.........................................................................152
CALIBRATION..............................................154
Calibrating Output Settings ..........................154
Offset/Full Scale Calibration of Output Voltage
Settings........................................................154
Offset/Full-Scale Calibration of Output Current
Settings........................................................156
Offset/Full-Scale Calibration of Output Voltage
with External Analog Input............................158
Output Voltage Control with External Voltage
(Insulation External Voltage ~ 1000V models
only)..........................................................158
Output Voltage Control with External
Resistance(A)...........................................160
Output Voltage Control with External
Resistance(B)...........................................162
Output Voltage Control via External
Resistance(C)...........................................164
Offset/Full-Scale Calibration of Output Current
with External Analog Input............................166
Output Current Control with External Voltage
(Insulation External Voltage).....................166
Output Current Control via External
Resistance (A)..........................................168
Output Current Control via External
Resistance (B)..........................................170
Output Current Control via External
Resistance (C)..........................................172
Calibrating Meters .........................................174
Voltmeter Offset/Full-Scale Calibration ........174
Ammeter Offset/Full-Scale Calibration.........176
Offset/Full Scale Calibration of Output Voltage
Monitor (Insulation Output Voltage Monitor).178
Offset/Full Scale Calibration of Output Current
Monitor (Insulation Output Current Monitor).180
SPECIFICATIONS ....................................... 182
Output Specifications....................................182
Input Characteristics.....................................182
Constant Voltage Mode .................................183
Constant Current Mode.................................183
Measures/Displays ........................................184
Protection Functions.....................................184
Other Functions.............................................185
External Control.............................................186
Insulation/ Withstanding Voltage..................186
Environmental Conditions............................186
General Specifications.................................. 187
External Diagrams.........................................188
APPENDIX................................................... 196
Appendix 1 Loaded Current vs Recommended
Conductor Area............................................196
Appendix 2 Circuit Block Diagram................ 197

SAFETY INSTRUCTIONS
5
SAFETY INSTRUCTIONS
This instruction manual uses the various symbols below to indicate areas of caution.
Please thoroughly read and understand these symbols and their significance prior to use.
The section “For your safety” contains information on items not included with your purchased product.
This manual uses the following marks and symbols to assist you in the proper use of this product.
！DANGER
Failure to observe precautions indicated by this symbol and improper use or handling
of the product will result in serious injury or death.
！WARNING
Failure to observe precautions indicated by this symbol and improper use or handling
of the product may result in serious injury or death.
！CAUTION
Failure to observe precautions indicated by this symbol and improper use or handling
of the product may result in injury or property damage.
Items that must be observed are classified into the following marks.
This mark indicates items that are "Prohibited".
！
This mark indicates items that are "Mandatory".
！
This mark indicates general "Caution".
Symbols used within this manual are described below.
Contact with areas on the product indicated by this symbol may result in electric shock.
Unplug the power supply plug from theoutlet. If
There is abnormal noise or smell Smoke appears Water or foreign objects has entered
the product continual use of the product may cause fire or electric shock.
Dismantling or modification to the product is prohibited. Do not open the cover.
This may result in fire or electric shock. For repairs and adjustments please contact your
retailer.
Protective EarthTerminal. Please make a connection in earth.
Please connect for loads with earth terminals
Direct Current (DC)
Alternating Current (AC)
AC and DC
3-PhaseAlternating Current

PHX-D Series
6
For your safety
This product is a power supply system for business use, which uses an input power of AC342V~440V (three
phase).
Please be forewarned that it is not produced as an electronic device for general home use.
Improper use of this product may result in injury, electric shock or death, and may also result in fire.
Please thoroughly read and understand this manual prior to use. Further, this product should only be handled by a
specialist knowledgeable in electricity safety, or under the supervision of such a person.
Please read through this manual to ensure the proper placement and use environment for this product before
turning on power.
If any problems arise, please unplug the power supply plug from the outlet power immediately and contact GW
Instek.
Using this product near receivers (radios, televisions, etc.) may interfere with reception.
Please do not use this product in any medical, nuclear, or work involving human life.
Caution
1. Reproduction of the material contained within this manual without notice is strictly prohibited.
2. Information contained within this manual may be altered without notification.
3. All material contained within this manual has been thoroughly examined. If by chance, any
errors, suspicious items, or omissions are discovered, please contact Good Will Instrument.
4. Good Will Instrument Co., Ltd. shall undertake no responsibility, regardless of clause 2, for
any impact this product may have on results.
Caution

ABOUT THIS MACHINE
7
ABOUT THIS MACHINE
●The PHX Series are the Switching DC Constant Voltage/Constant Current Power Supplies capable of
changing from zero-volt and zero-ampere.
●The PHX series allows the use of both the Constant Voltage and Constant Current modes, along with the ability
to be able to freely set the power from zero to full scale.
●The PHX series, with full digital control, also grants settings with superior accurate reproduction.
[Output Voltage/Current Range]
30
0
60
0 20 40 400 60 80 120 160 200 240 280 320 360
Output Voltage (V) →
Output Current (A) →
PHX 60-100 PHX 30-200
PHX 60-200 PHX 30-400
500
0
1000
024
Output Voltage (V) →
Output Current (A) →
6 12 18
PHX 500-12
PHX 500-24
PHX 1000-6
PHX 1000-12

PHX-D Series
8
Features
Improved Parallel Operation (New Master/Slave)
Up to 10 PHX power supplies of the same voltage output type (maximum capacity 120 kW) can be operated in parallel.
Constant voltage transient recovery properties will not degrade, even when increasing the number of parallel units, due to the new
master-slave method.
Serial Communication Port Standardized System
Equipped with a multi-drop communication port, one RS-232C or RS-485 port is capable of controlling up to 31 units of supported
models.
* Special cable (PHX-003)
Useful Functions
Memory
Saving and loading can be done for 3 sets of panel setting status. Tests such as voltage fluctuation test can be conducted by
easy operation.
Variable Slew Rate
Changes the slew rate for the rising and falling of the voltage/current.
Startup Mode Selection
Equipped with a CC Priority Mode for loads with nonlinear V-I characteristics similar to diodes, this function is capable of
preventing current overshoot when output is ON.
Sequential ON/OFF
Sets the order outputs are toggled ON/OFF through a multi-connection cable.
Protection Functions
Guards valuable loads and power supplies with Over Voltage Protection, Over Current Protection, Over Heating Protection,
Excessive Input Current Protection, etc
External Analog Control
Able to control ON-OFF output with external contact points, and voltages and currents based on external DC voltage (0~10V) and
external resistance (0~or 0~10kΩ)
* Full-scale and offset adjustments can be performed with the front panel dials.
Analog Monitor
Outputs the output voltage and output current with 0~10V DC.
* Not suited for monitoring transient voltage/current waveforms.
Status Alarm Output
Outputs an alarm or operation status with a photocoupler output (open collector) insulated from outputs and the earth.
Variable Internal esistance
This function intentionally generates a voltage drop due to load current when running in Constant Voltage mode.
With this function, the power supply is capable of approximating an internal resistance of chemical batteries (during electric discharge)
and I-V characteristics of solar/fuel cells.
* Restricted to direct current operations. Not suited for approximating transient effects.

ABOUT THIS MACHINE
9
Part Names and Functions
Front Panel (12kW models shown)
1 237654
8
Front Panel Continued (6kW models shown)
10 11
9
14 1517 19 20
12 13
18 16
.VOLTAGE
Voltage Setting/Selection Dial
Selects the voltage, the OVP, and various other
parameters. Press the dial to change the settings number
place.
. CURRENT
Current Setting/Selection Dial
Selects the current, the OCP, and various other
parameters. Press the dial to change the settings number
place.
. OUTPUT
Output ON/OFF Toggle Key
Toggles output ON/OFF.
The factory default setting for the output, after inserting
power, is OFF.
Lights when the output is set to ON.
. MEMORY
Memory Display/Settings Key
Saving and loading can be done for the panel setting status
with keys "A", "B", and "C". Also, depending on the Function
item setting, this can be used to select One-Action or
Two-Action loading method.

PHX-D Series
10
. LOCK
LOCK Key
Locks panel from use.
Lights when Lock has been enabled.
Below are the 3 types of Lock settings. They can be changed
by each function setting key (FUNC.).
Locks everything but the LOCK key
Locks everything but the OUTPUT and LOCK key
Locks only the Voltage/Current Dial, PRESET, and
FUNC. keys.
. LOCAL
LOCAL Key
Switches between “LOCAL”, operated from the panel, and
“REMOTE”, operated by control via serial data
communication.
.FUNC.
Function Key
Used for setting various functions
Lights when Function settings are available.
.POWER
Input Power Switch
Toggles power ON/OFF
.Ventilation Panels
Panels which allow cool air to enter and cool the product
internally.
.DISPLAY
Display Key
Toggles the displayed measurement information.
Can be toggled between 3 display modes: Voltage/Current,
Voltage/Power, Power/Current.
11
. PRESET
Preset Key
Used to set the output voltage and output current.
Lights when Preset settings are available.
12
. OVP/OCP
Over Voltage Protection (OVP)/Over Current
Protection (OCP) Key
Sets the trigger point for the OVP circuit and the OCP circuit.
13
. ALARM RESET
Alarm Reset Key
Hold down for 1 second or more to cancel an alarm.
14
. REMOTE
Remote Display Lamp
Lights when control has been transferred to an external
computer, etc. being accessed via serial interface.
15
. Number Display (Voltage)
Displays the output voltage and the output power. When
setting functions with the Function key, the item number will
be displayed.
16
. Number Display (Current)
Displays the output current and the output power. When
setting functions with the Function key, the parameter will be
displayed.
17
. CV
Constant Voltage Display Lamp
Lights when output is set to “ON” during constant voltage
mode.
18
. CC
Constant Current Display Lamp
Lights when output is set to “ON” during constant current
mode.
19
. kW, V
Measurement Unit Display Lamp
Lights when Number Display (voltage) displays a
voltage/power value.
20
. kW, A, Ω, mΩ
Measurement Unit Display Lamp
Lights when Number Display (current) displays a
current/power value. Also, displays the unit of the
corresponding resistance value when setting the Variable
Internal Resistance function.

ABOUT THIS MACHINE
11
Rear Panel (PHX 30-200, PHX 60-100)
31 32
30
21 22 23 24 25 26 27 2833
29
34
Rear Panel (PHX 30-400)
21 22 23 24 25 26 27 28
33
29
34
30
32
31

PHX-D Series
12
Rear Panel (PHX 60-200)
21 22 23 24 25 26 27 28
33
29
30
34
31 32
Rear Panel (PHX 500-12)
32
31
30
21 22 23 24 25 26 27 2833
29
34

ABOUT THIS MACHINE
13
Rear Panel (PHX 500-24)
21 22 23 24 25 26 27 28
29
30
32
31
33
34
Rear Panel (PHX 1000-6)
31
32
30
21 24 25 26 27 2833
29
34

PHX-D Series
14
Use the input power cable hat is included in
the product or a better ones.
！
Mandatory
！CAUTION
Rear Panel (PHX 1000-12)
29
34
30
31
32
21 24 25 26 27 2833
21
. ISOLATED CONTROL
Insulation Control Connector
This is the Status/Alarm Output Connector.
It is used for external analog control input of insulation
type, analog monitor output, and contact input. Only
applicable for the 1000V models. Use the included
specialized connectors.
22
. SERIES CONTROL
Series Operation Control Connector
Connector for series connections. When using in the slave
mode, connect with the Master unit’s minus output terminal
using wires.
23
. EXTERNAL CONTROL
External Control Connector
Connectors for external analog control input and analog
monitor output. Use the included specialized connectors.
24
. Master/Booster CONTROL (IN)
Parallel Operation Control (Input) Connector
Control Signal Input Connector for parallel operations.
25
. Master/Booster CONTROL (OUT)
Parallel Operation Control (Output) Connector
Control Signal Output Connector for parallel operations.
26
. TERMINATION
Termination Resistor ON/OFF Switch
When controlling one unit of this product via serial port,
please set the termination toggle switch to ON.
When using 2 or more power supplies, please set the first
and last units’ termination resistor ON/OFF switch to ON
(set other units' ones to OFF).
27
. SERIAL I/F 2
Serial Port/Multi-Channel Connectors
Connectors for when controlling multiple PHX Series
units or for controlling RS-485 type, serial ports.
Connected with special cable. (PHX-003)
28
. SERIAL I/F 1
Serial Port Connector
Connector for connecting computers etc. with serial
cables (RS-232C).
29
. LINE INPUT
Input Connector
This is the connector that connects the power of this
product.
30
. Ventilation Discharge Opening
Ventilation discharge opening for cooling the
product internally.
31
. DC OUTPUT
Output Terminal
32
. REMOTE SENSE
Sensing Terminal
！WARNING
！
Mandatory
As for parallel connection cables, be sure to use
the special cable (PHX-001 for 30V/60V models,
PHX-002 for 500V/1000V models).

ABOUT THIS MACHINE
15
DC Output Terminal.
Terminal for Remote Sensing
33
. Master/Booster Frame Ground (M/B FG)
FG terminal for parallel connection cable
This is the terminal for connecting the frame ground of
parallel connection cable.
㉞. PROTECTIVE EARTH TERMINAL (M4)
！
Mandatory
！CAUTION
A Crimp-Style Terminal must be used. Please be
sure to tighten all attachment screws.
After connecting, attach the output terminal cover
before use.

PHX-D Series
16
PREPARATION AND
CONNECTION
Unpacking
When unpacking, please verify the following accessory items are included.Also, please verify that there are no
scratches or indentations present on the power supply’s exterior.
①Input Connector -------------------------------------------------------------------------------------------------- 1 item
②Output Terminal Cover (All models except PHX 30-400)----------------------------------------------- 1 package
Output Terminal Cover 2 items (Identical Shape)
Supporter for attaching cover 1 item
M3x6mm screws 2 items
③Output Terminal Cover (PHX 30-400 only)----------------------------------------------------------------- 1 package
Output Terminal Cover
M3x6mm screws 6 items
④Output Terminal Bolt (Attached to power supply)
(PHX 30-200, PHX 30-400, PHX 60-100, PHX 60-200 only)------------------------------------------ 2 items
M12x30mm bolt 1 item
M12 flat-washer 2 items
M12 spring-washer 1 item
M12 nut 1 item
⑤Output Terminal Screws (Attached to power supply)
(PHX 500-12, PHX 500-24, PHX 1000-6, PHX 1000-12 only) ---------------------------------------- 2 items
M5x10mm screws
⑥Insulation Tube (PHX 30-400 only) -------------------------------------------------------------------------- 2 items
⑦Wire Band (PHX 30-400 only)--------------------------------------------------------------------------------- 4 items
⑧Connector for Remote Sensing (PHX 30-400 only)------------------------------------------------------ 1 item
⑨Connector for Remote Sensing (PHX 1000-6, PHX 1000-12 only)---------------------------------- 2 items
⑩Cover for Remote Sensing (PHX 1000-6, PHX 1000-12 only)----------------------------------------1 package
Cover for Remote Sensing x 1 unit
M3x6mm screws 2 items
⑪Dummy Connector (Attached to Master/Boost control of power supply)--------------------------- 2 items
⑫Insulation Control Connector (Attached to isolated control of power supply) ---------------------1 item
⑬External Control Connector (Attached to external control of power supply)
(PHX 30-200, PHX 30-400, PHX 60-100, PHX 60-200, PHX 500-12, PHX 500-24)------------1 item
⑭Parallel Connection Terminal Cover
(PHX 60-100, PHX 60-200, PHX 500-12, PHX 500-24, PHX 1000-6, PHX 1000-12) ----------1 package
⑮CD-ROM (Includes User Manual and Basic User Manual) --------------------------------------------1 copy

PREPARATION AND CONNECTION
17
Placement
To ensure proper and safe use of this product, please observe the following.
！WARNING
Prohibited
Do not use in areas exposed to rain and water.
Prohibited
Do not place in areas in which flammable gases are present.
Prohibited
Do not insert any metallic pins, wires, screws, etc. in the front ventilation panels and in the rear fan
motor. Doing so may result in electric shock and/or fire.
！CAUTION
Prohibited
This product was designed to be used in stable areas. Do not use or place in areas prone to
vibration.
Improper placement of the power supply may result in damage. Please see below for proper
placement.
How to place:
！CAUTION
！
Mandatory
Use only in areas with a room temperature of 0~50℃, humidity of 20~90%RH, and which is
absent of any corrosive gases.
Prohibited
This power supply uses a forced air cooling system. Do not obstruct the front ventilation panels
and rear ventilation discharge opening. If affixing to a rack, attach ventilation panels or others to
the rear of the rack to prevent exhaust from staying inside the rack.
！
Mandatory
If using in environment where electric conductive contamination occurs, considerations needs to
be taken such as intaking air using duct.
！
Caution
Using this product near receivers (radios, televisions, etc.) may interfere with reception.

PHX-D Series
18
Connecting the Power Supply
This product operates on a 342V to 440V and 45Hz to 65Hz three-phase AC power supply.
To ensure proper and safe use of this product, please observe the following.
！DANGER
！
Mandatory
Verify that the input power supply (power supply AC 342V to 440V) is turned off when wiring
input terminals.
！
Mandatory
A noise filter is built into the device to prevent EMI (Electromagnetic Interference).
Due to this, even the slightest amount of leaked current may result in electric shock if not properly
grounded.
For safety reasons, please ground the device.
！CAUTION
！
Mandatory
Please use input power within ranges of 342V to 440V and 45Hz to 65Hz (three-phase).
The nominal power supply voltage is displayed near the rear input connector platform.
！
Mandatory
Since it becomes a cause of failure, please do not use it with the electric supply source line in
which each voltage between phase groundings (Between L1-G, Between L2-G, and Between
L3-G) is higher than AC254V.
PHX
L1
L2
L3
G
Neutral
point
Power supply equipment
Please ground the neutral point.
！
Mandatory
Please connect to a power supply capable of providing the maximum electric power consumption.
！
Mandatory
For wiring to the connector platform, be sure to connect it tightly.
Fastening loosely may cause heating and burnout of the connector platform.
！
Mandatory
The cross-section area of the wiring material should be sufficient against load current.
Please refer to the Appendix 5 "Loaded Current vs Recommended Conductor Area" (Page 196)
when you select the wiring material.
Maximum Input Current is displayed near the input terminals at rear side.

PREPARATION AND CONNECTION
19
Connecting the Input Power Source
10mm
②Insert a cable in the hole of the
connector.
③Please fix the cable by tightening the
screw so that the cable does not fall out.
⑤Attach the cable to protective earth
terminal.
①Strip 10mm of the cable covering.
④Insert other cables in the connector and fix
the cables tightly in the same manner.

PHX-D Series
20
!CAUTION
When the cables are removed, please turn off the input power switch (POWER)
and remove the input connector after the confirmation of no power supply from the
feeding device. Then remove grounding cable in the end.
⑦Tighten the upper and lower screws and fix the
inserted connector so that is does not fall off.
(The picture shows tightening the upper
screw.)
⑧The picture shows tightening the lower screw.
⑨Bundle and fix the input cables with a
cable-tie so that they don’t become loose.
⑥Insert the input cables from step ④into the
input terminal firmly.