Cerus Industrial Titan GS Series Instruction manual

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
Compact
Space Ve
฀ VFD
฀ Frequency and
฀฀
.5  5 ฀฀฀฀
.5  5 ฀฀฀฀ 8 

1
Thank you for purchasing CERUS Variable Frequency Drives!
SAFETY INSTRUCTIONS
 Always follow safety instructions to prevent accidents and potential hazards from occurring.
 In this manual, safety messages are classified as follows:
WARNING
CAUTION
 Throughout this manual we use the following two illustrations to make you aware of safety
considerations:
Identifies potential hazards under certain conditions.
Read the message and follow the instructions carefully.
Identifies shock hazards under certain conditions.
Particular attention should be directed because dangerous voltage may be present.
 Keep operating instructions handy for quick reference.
 Read this manual carefully to maximize the performance of GS series inverter and ensure its
safe use.
WARNING
 Do not remove the cover while power is applied or the unit is in operation.
Otherwise, electric shock could occur.

Do not run the inverter with the front cover removed.
Otherwise, you may get an electric shock due to high voltage terminals or charged capacitor
exposure.

Do not remove the cover except for periodic inspections or wiring, even if
the input power is not applied.
Otherwise, you may access the charged circuits and get an electric shock.
Improper operation may result in slight to medium personal injury
or property damage.
Im
p
ro
p
er o
p
eration ma
y
result in serious
p
ersonal in
j
ur
y
or death.

2

Wiring and periodic inspections should be performed at least 10 minutes
after disconnecting the input power and after checking the DC link voltage
is discharged with a meter (below DC 30V).
Otherwise, you may get an electric shock.

Operate the switches with dry hands.
Otherwise, you may get an electric shock.

Do not use the cable when its insulating tube is damaged.
Otherwise, you may get an electric shock.

Do not subject the cables to scratches, excessive stress, heavy loads or
pinching.
Otherwise, you may get an electric shock.
CAUTION

Install the inverter on a non-flammable surface. Do not place flammable
material nearby.
Otherwise, fire could occur.

Disconnect the input power if the inverter gets damaged.
Otherwise, it could result in a secondary accident and fire.

After the input power is applied or removed, the inverter will remain hot for
a couple of minutes.
Otherwise, you may get bodily injuries such as skin-burn or damage.

Do not apply power to a damaged inverter or to an inverter with parts
missing even if the installation is complete.
Otherwise, electric shock could occur.

Do not allow lint, paper, wood chips, dust, metallic chips or other foreign
matter into the drive.
Otherwise, fire or accident could occur.

3
OPERATING PRECAUTIONS
(1) Handling and installation
 Handle according to the weight of the product.
 Do not stack the inverter boxes higher than the number recommended.
 Install according to instructions specified in this manual.
 Do not open the cover during delivery.
 Do not place heavy items on the inverter.
 Check the inverter mounting orientation is correct.
 Do not drop the inverter, or subject it to impact.
 Follow your national electrical code for grounding. Recommended Ground impedance for
230 V Class is below 100 ohm and for 400V class below 10 ohm.
 GS series contains ESD (Electrostatic Discharge) sensitive parts. Take protective
measures against ESD before touching the pcb for inspection or installation.
 Use the inverter under the following environmental conditions:
Ambient
temperature - 10 ~ 50 ഒ (non-freezing)
Relative
humidity
90% RH or less (non-condensing)
Storage
temperature - 20 ~ 65 ഒ
Location Protected from corrosive gas, combustible gas, oil mist
or dust
Altitude,
Vibration
Max. 1,000m above sea level, Max. 5.9m/sec
2
(0.6G)
or less
Environment
Atmospheric
pressure 70 ~ 106 kPa
(2) Wiring
 Do not connect a power factor correction capacitor, surge suppressor, or RFI filter to the
output of the inverter.
 The connection orientation of the output cables U, V, W to the motor will affect the
direction of rotation of the motor.
 Incorrect terminal wiring could result in the equipment damage.
 Reversing the polarity (+/-) of the terminals could damage the inverter.
 Only authorized personnel familiar with CERUS inverter should perform wiring and
inspections.
 Always install the inverter before wiring. Otherwise, you may get an electric shock or
have bodily injury.
(3) Trial run
 Check all parameters during operation. Changing parameter values might be required
depending on the load.

4
 Always apply permissible range of voltage to the each terminal as indicated in this
manual. Otherwise, it could lead to inverter damage.
(4) Operation precautions
 When the Auto restart function is selected, stay away from the equipment as a motor will
restart suddenly after an alarm stop.
 The Stop key on the keypad is valid only when the appropriate function setting has been
made. Prepare an emergency stop switch separately.
 If an alarm reset is made with the reference signal present, a sudden start will occur.
Check that the reference signal is turned off in advance. Otherwise an accident could
occur.
 Do not modify or alter anything inside the inverter.
 Motor might not be protected by electronic thermal function of inverter.
 Do not use a magnetic contactor on the inverter input for frequent starting/stopping of the
inverter.
 Use a noise filter to reduce the effect of electromagnetic interference. Otherwise nearby
electronic equipment may be affected.
 In case of input voltage unbalance, install AC reactor. Power Factor capacitors and
generators may become overheated and damaged due to potential high frequency noise
transmitted from inverter.
 Use an insulation-rectified motor or take measures to suppress the micro surge voltage
when driving 460V class motor with inverter. A micro surge voltage attributable to wiring
constant is generated at motor terminals, and may deteriorate insulation and damage
motor.
 Before operating unit and prior to user programming, reset user parameters to default
settings.
 Inverter can easily be set to high-speed operations, Verify capability of motor or
machinery prior to operating unit.
 Stopping torque is not produced when using the DC-Break function. Install separate
equipment when stopping torque is needed.
(5) Fault prevention precautions
 Provide a safety backup such as an emergency brake which will prevent the machine
and equipment from hazardous conditions if the inverter fails.
(6) Maintenance, inspection and parts replacement
 Do not conduct a megger (insulation resistance) test on the control circuit of the inverter.
 Refer to Chapter 14 for periodic inspection (parts replacement).
(7) Disposal
 Handle the inverter as an industrial waste when disposing of it.
(8) General instructions
Many of the diagrams and drawings in this instruction manual show the inverter without a circuit
breaker, a cover or partially open. Never run the inverter like this. Always place the cover with
circuit breakers and follow this instruction manual when operating the inverter.

5
Important User Information
z The purpose of this manual is to provide the user with the necessary information to install,
program, start up and maintain the GS series inverter.
z To assure successful installation and operation, the material presented must be thoroughly read
and understood before proceeding.
z This manual contains…
Chapter Title Description
1 Basic
information &
precautions
Provides general information and precautions for safe use of the
GS series inverter.
2 Installation Provides instructions on how to install the GS inverter.
3 Wiring Provides instructions on how to wire the GS inverter.
4
Basic
configuration
Describes how to connect the optional peripheral devices to the
inverter.
5 Programming
keypad
Illustrates keypad features and display.
6 Basic operation Provides instructions for quick start of the inverter.
7 Function list Parameter values are listed.
8 Control block
diagram
Shows control flow to help users easily understand operation
mode.
9 Basic functions Provides information for basic functions in the GS
10 Advanced
functions
Indicates advanced functions used for system application.
11 Monitoring Gives information on the operating status and fault information.
12 Protective
functions
Outlines protective functions of the GS.
13 RS 485 Provides specification of RS485 communication.
14 Troubleshooting
& maintenance
Defines the various inverter faults and the appropriate action to
take as well as general troubleshooting information.
15 Specifications Gives information on Input/Output rating, control type and more
details of the GS inverter.
16 Option Explains options including Remote keypad, Conduit, EMC filter,
DB resistor.

6
Table of Contents
CHAPTER 1 -
G Basic information & precautions........................................................................1-1 G
1.1 Important precautions ........................................................................................................... 1-1 G
1.2 Product Details...................................................................................................................... 1-2 G
1.3 Product assembling & disassembling ................................................................................... 1-3 G
CHAPTER 2 - G Installation ............................................................................................................ 2-1 G
2.1 Installation precautions ......................................................................................................... 2-1 G
2.2 Dimensions ........................................................................................................................... 2-3 G
CHAPTER 3 - G Wiring.................................................................................................................... 3-1 G
3.1 Terminal wiring (Control I/O) ................................................................................................. 3-1 G
3.2 Specifications for power terminal block wiring ...................................................................... 3-3 G
3.3 Control terminal specification................................................................................................ 3-7 G
3.4 PNP/NPN selection and connector for communication option.............................................. 3-8 G
CHAPTER 4 - G Basic configuration ............................................................................................. 4-1 G
4.1 Connection of peripheral devices to the inverter................................................................... 4-1 G
4.2 Recommended Breakers ...................................................................................................... 4-2 G
4.3 Recommendable AC Reactors.............................................................................................. 4-2 G
CHAPTER 5 - G Programming Keypad.......................................................................................... 5-1 G
5.1 Keypad features.................................................................................................................... 5-1 G
5.2 Alpha-numeric view on the LED keypad ............................................................................... 5-2 G
5.3 Moving to other groups ......................................................................................................... 5-3 G
5.4 How to change the codes in a group .................................................................................... 5-5 G
5.5 Parameter setting.................................................................................................................. 5-7 G
5.6 Monitoring of operation status.............................................................................................5-10 G
CHAPTER 6 - G Basic operation .................................................................................................... 6-1 G
6.1 Frequency Setting and Basic Operation ............................................................................... 6-1 G
CHAPTER 7 - G Function list.......................................................................................................... 7-1 G
CHAPTER 8 - G Control block diagram......................................................................................... 8-1 G
8.1 Frequency and Drive mode setting....................................................................................... 8-2 G
8.2 Accel/Decel setting and V/F control ...................................................................................... 8-3 G
CHAPTER 9 - G Basic Functions ................................................................................................... 9-1 G
9.1 Frequency mode................................................................................................................... 9-1 G
9.2 Multi-Step Frequency setting ................................................................................................ 9-7 G
9.3 Operating command setting method..................................................................................... 9-8 G
9.4 Accel/Decel time and pattern setting................................................................................... 9-12 G
9.5 V/F control........................................................................................................................... 9-17 G
9.6 Stop method select ............................................................................................................. 9-20 G
9.7 Frequency limit.................................................................................................................... 9-21 G
CHAPTER 10 - G Advanced functions........................................................................................... 10-1 G
10.1 DC brake........................................................................................................................... 10-1 G
10.2 Jog operation .................................................................................................................... 10-3 G

7
10.3 UP – DOWN...................................................................................................................... 10-4
G
10.4 3-Wire ............................................................................................................................... 10-4 G
10.5 Dwell operation ................................................................................................................. 10-5 G
10.6 Slip compensation............................................................................................................. 10-6 G
10.7 PID control ........................................................................................................................ 10-8 G
10.8 Auto-tuning...................................................................................................................... 10-10 G
10.9 Sensorless Vector Control .............................................................................................. 10-11 G
10.10 Energy-saving operation............................................................................................... 10-12 G
10.11 Speed search ................................................................................................................ 10-13 G
10.12 Auto restart try............................................................................................................... 10-15 G
10.13 Operating sound select (Carrier frequency change) ..................................................... 10-16 G
10.14 2
nd
motor operation ....................................................................................................... 10-16 G
10.15 Self-Diagnostic function ................................................................................................ 10-18 G
10.16 Option(RS485)-Inverter Exchange................................................................................ 10-19 G
10.17 Cooling fan control........................................................................................................ 10-20 G
10.18 Operating mode select when cooling fan trip occurs .................................................... 10-21 G
10.19 Parameter read/write .................................................................................................... 10-22 G
10.20 Parameter Initialize / Lock............................................................................................. 10-23 G
CHAPTER 11 - G Monitoring .......................................................................................................... 11-1 G
11.1 Operating status monitoring .............................................................................................. 11-1 G
11.2 Monitoring the I/O terminal ................................................................................................ 11-3 G
11.3 Monitoring fault condition .................................................................................................. 11-4 G
11.4 Analog Output ................................................................................................................... 11-6 G
11.5 Multi-function output terminal (MO) and Relay (3AC) ....................................................... 11-7 G
11.6 Output terminal select at keypad-inverter communication error...................................... 11-12 G
CHAPTER 12 - G Protective functions .......................................................................................... 12-1 G
12.1 Electronic Thermal ............................................................................................................ 12-1 G
12.2 Overload Warning and trip ................................................................................................ 12-2 G
12.3 Stall prevention ................................................................................................................. 12-3 G
12.4 Output phase loss protection ............................................................................................ 12-5 G
12.5 External trip signal ............................................................................................................ 12-5 G
12.6 Inverter Overload .............................................................................................................. 12-6 G
12.7 Frequency command loss................................................................................................. 12-7 G
12.8 DB Resistor Enable Duty setting....................................................................................... 12-9 G
CHAPTER 13 - G RS485 communication ...................................................................................... 13-1 G
13.1 Introduction ....................................................................................................................... 13-1 G
13.2 Specification...................................................................................................................... 13-1 G
13.3 Installation......................................................................................................................... 13-2 G
13.4 Operation .......................................................................................................................... 13-3 G
13.5 Communication protocol (MODBUS-RTU) ....................................................................... 13-4 G
13.6 Communication protocol (CERUS BUS)........................................................................... 13-4 G
13.7 Parameter code list <Common area> .............................................................................. 13-8 G

8
13.8 Troubleshooting .............................................................................................................. 13-16
G
13.9 Miscellaneous ................................................................................................................. 13-17 G
CHAPTER 14 - G Troubleshooting & Maintenance....................................................................... 14-1 G
14.1 Protective functions........................................................................................................... 14-1 G
14.2 Fault remedy..................................................................................................................... 14-3 G
14.3 Precautions for maintenance and inspection.................................................................... 14-6 G
14.4 Check points ..................................................................................................................... 14-6 G
14.5 Part replacements............................................................................................................. 14-6 G
CHAPTER 15 - G Specifications..................................................................................................... 15-1 G
15.1 Technical data ................................................................................................................... 15-1 G
15.2 Temperature Derating Information .................................................................................... 15-3 G
CHAPTER 16 - G Option ................................................................................................................. 16-1 G
16.1 Remote option................................................................................................................... 16-1 G
16.2 Conduit option................................................................................................................... 16-4 G
16.3 EMC filter .......................................................................................................................... 16-4 G
16.4 Braking resistor................................................................................................................. 16-4 G
DECLARATION OF CONFORMITY...................................................................................................... i G

1-1
CHAPTER 1 - BASIC INFORMATION & PRECAUTIONS
1.1 Important precautions
Unpacking and
inspection
z Inspect the inverter for any damage that may have occurred during
shipping. To verify the inverter unit is the correct one for the application you
need, check the inverter type, output ratings on the nameplate and the
inverter is intact.
CI 001 GS - 2
Motor rating Series
Name Input power
001 0.75 [kW]
002 1.5 [kW]
003 2.2 [kW]
2Three Phase
200~230[V]
005 3.7 [kW]
007 5.5 [kW]
CERUS Inverter
010 7.5 [kW]
GS
4Three phase
380~480[V]
z Accessories
If you have found any discrepancy, damage, etc., contact your sales
representative.
Preparations
of instruments
and parts
required for
operation
Instruments and parts to be prepared depend on how the inverter is operated.
Prepare equipment and parts as necessary.
Installation To operat e the inver ter w it h high perfor m ance f o r a long time, install the inverter
in a proper place in the correct direction and with proper clearances
Wiring Connect the power supply, motor and operation signals (control signals) to the
terminal block. Note that incorrect connection may damage the inverter and
peripheral devices
Input power rating
Inverter Type
Out
p
ut Power Ratin
g
Rated output current, frequency
Inverter Ca
p
acit
y(
kVA
)
Bar Code and Serial Number

1-2
1.2 Product Details
z Appearance
z Inside view after front cover is removed
Refer to “1.3 front cover removal” for details.
Front cover:
Removed when
wiring
Bottom cover:
Removed when
wiring input power
and a motor
Status LED Display
Inverter
nameplate
4-Way button for
parameter setting
(Up/Down/Left/Right)
Control signal
Ter m ina l
NPN, PNP
Select Switch
[ENT]
button
STOP/RESET
button
Inverter Ground
Term i na l
RUN button
Power terminal
Cooling fan

1-3
1.3 Product assembling & disassembling
z To remove the front cover: Press the both indented sides of the cover lightly and pull
up.
z To change the inverter fan: Press the both sides of bottom cover lightly and pull out to
your side.
Press this part lightly and
pull it up.
Press this part and pull
out.

1-4
Notes:

2-1
CHAPTER 2 - INSTALLATION
2.1 Installation precautions
CAUTION
z Handle the inverter with care to prevent damage to the plastic components. Do not hold the
inverter by the front cover. It may fall off.
z Install the inverter in a place where it is immune to vibration (5.9 m/s
2
or less).
z Install in a location where temperature is within the permissible range (-10~50qC)
.
<Ambient Temp Checking Location>
z The inverter will be very hot during operation. Install it on a non-combustible surface.
z Mount the inverter on a flat, vertical and level surface. Inverter orientation must be vertical
(top up) for proper heat dissipation. Also leave sufficient clearances around the inverter.
z Protect from moisture and direct sunlight.
z Do not install the inverter in any environment where it is exposed to waterdrops, oil mist,
dust, etc. Install the inverter in a clean place or inside a “totally enclosed” panel any
suspended matter is not entered.
5cm
Min
10cm Min
5cm
Min
10cm Min Ventilating fan
Cooling air
Leave space enough to
allow cooled air flowing
easily between wiring
duct and the unit

2-2
z When two or more inverters are installed or a cooling fan is mounted in a panel, the inverters
and fan must be installed in proper positions with extreme care to keep the ambient
temperature below the permissible range.
z Installed the inverter using screws or bolts to insure the inverter is firmly fastened.
< For installing multiple inverters in a panel>
ჹ Note: Take caution on proper heat ventilation when installing inverters and fans in a panel.
Heat (NG)

2-3
2.2 Dimensions
CI-002-GS2/4
CI-001-GS2/4

2-4
CI-003-GS2/4, CI-005-GS2/4 CI-007-GS2/4, CI-010-GS2/4
H
W
D
W1
A
A
H1
W1
BB
˓

2-5
Inverter [kW] W
[mm]
W1
[mm]
H
[mm]
H1
[mm]
D
[mm]
˓A
[mm]
B
[mm] [Kg]
CI-001-GS2 0.75 70 65.5 128 119 130 4.0 4.5 4.0 0.77
CI-002-GS2 1.5 100 95.5 128 120 130 4.5 4.5 4.5 1.12
CI-003-GS2 2.2 140 132 128 120.5 155 4.5 4.5 4.5 1.84
CI-005-GS2 3.7 140 132 128 120.5 155 4.5 4.5 4.5 1.89
CI-007-GS2 5.5 180 170 220 210 170 4.5 5.0 4.5 3.66
CI-010-GS2 7.5 180 170 220 210 170 4.5 5.0 4.5 3.66
CI-001-GS4 0.75 70 65.5 128 119 130 4.0 4.5 4.0 0.77
CI-002-GS4 1.5 100 95.5 128 120 130 4.5 4.5 4.5 1.12
CI-003-GS4 2.2 140 132 128 120.5 155 4.5 4.5 4.5 1.84
CI-005-GS4 3.7 140 132 128 120.5 155 4.5 4.5 4.5 1.89
CI-007-GS4 5.5 180 170 220 210 170 4.5 5.0 4.5 3.66
CI-010-GS4 7.5 180 170 220 210 170 4.5 5.0 4.5 3.66

3-1
CHAPTER 3 - WIRING
3.1 Terminal wiring (Control I/O)
T/M Description
MO Multi-function open collector output
MG MO Common
24 24V output
P1 FX: Forward run
P2
MF input terminal
(factory setting) RX: Reverse run
CM Input signal common
P3 BX: Emergency stop
P4 RST: Trip reset
P5
MF input terminal
(factory setting) JOG: Jog operation
CM Input signal common
P6 Multi-step freq.-Low
P7 Multi-step freq.-Middle
P8
MF input terminal
(factory setting) Multi-step freq.-High
VR 10V power supply for potentiometer
V1 Freq. Setting Voltage signal input: -0~10V
I Freq. Setting Current signal input: 0~20mA
AM Multi-function analog output signal: 0~10V
3A A contact output
3B B contact output
3C
Multi-function relay
output terminal
A/B contact common
S+
S- RS485 communication terminal
G
ೈ For connection to Remote Option or
parameter copying