KEBCO COMBIVERT F4-S User manual

Important Note: The user should read this manual
completely prior to operating the inverter
01/00
POWER TRANSMISSION
COMBIVERT
INSTRUCTION MANUAL SIMPLE CONTROL

This instruction manual must be made available to all users. Before
working with this unit the user must be familiar with it. This is especially
true for the attention, safety and warning guides. The meaning of the
icons used in this manual are:
Danger Attention, Information
Warning observe at Help
Caution all costs Tip
© KEBCO 0S.F4.0EB-K120 01/00

1F4-S Instuction Manual
POWER TRANSMISSION
Table of Contents
F4-S
Instruction Manual
Table of Contents
1. Installation and connection....................................... 2
1.1 Definition of terminal strip X1 ........................................2
1.2 Connection of the control signals ................................................2
1.2.1 Digital inputs ....................................................................2
1.2.2 Analog inputs ...................................................................2
1.2.3 Outputs ................................................................3
2. Operation of the inverter.........................................3
2.1 Digital operator ........................................................................3
2.1.1 Interface operator ................................................................3
2.1.2 Keyboard .................................................................4
2.2 Parameter summary .................................................5
2.3 Password input ......................................................5
2.4 Operating display ..................................................6
2.5 Basic adjustment of the drive ....................................7
2.6 Special adjustments ..................................................9
2.7 The "Drive Mode" ....................................................14
2.7.1 Start / Stop "Drive Mode" ....................................14
2.7.2 Changing direction of rotation ..........................14
2.7.3 Speed setting .........................................................14
2.7.4 Leaving "Drive Mode" .............................................14
3. Error diagnosis ......................................................15
4. Glossary ...................................................17
5. Index .....................................................................18
6. Quick reference ..............................................19
7. Passwords ...........................................................20

2F4-S Instuction Manual
Installation and Connection
123456789101112
13 14
Size 05...15
PIN Function Description
1NO contact Relay output
2NC contact Function see parameter CP.22
3Switch contact ( factory setting: fault indication)
4Fixed frequency 1 A signal at 4 and 5 give fixed frequency 3,
5Fixed frequency 2 no signal and the speed reference becomes the analog input
6Digital common Common terminal for digital inputs and outputs
7+10V Supply voltage for speed reference potentiometer (max. 4mA)
8Speed reference 0...10VDC for analog speed setting
9Analog common Common for analog inputs and outputs
10 Analog output Analog output of actual frequency 0...10VDC = 0...102.4Hz
11 15V Voltage supply for digital inputs and outputs (max. 100mA)
12 Reverse Rotation direction; forward has priority
13 Forward
14 Control release Output voltage enabled; drive faults reset when signal removed
Inorder to preventa malfunction causedby interference voltages on
the control inputs, the following steps should be observed:
- Use shielded/twisted cables
- Connect shields to earth ground only at the inverter
- Laycontrolandpowerwiresseparately (about8inchesapart)
- Control and power wires should cross at a right angle
1.2 Connection of the
control signals
1.2.1Digitalinput
5 1413124 GND 6
+
13...30VDC
External voltage supply
Internal voltage supply
Analog speed reference
using potentiometer Analog speed setting using 0...10V
1.2.2 Analog input
1. Installation and connection
1.1 Definition of
terminal strip X1
EMC
5 141312114GND
GND
98
987
GND
3...10 kW / 0.5 W 0...10 VDC
Ri = 4 kW
PLC
+-

3F4-S Instuction Manual
POWER TRANSMISSION
GND
321 109
+
Analogoutput:
max. 5mA
0...10VDC at RLoad 56 kΩ
0...1mADC at RLoad ≤5 kΩ
1.2.3Outputs
Installation and Connection
When running the inverter without an operator, it runs with the last
storedvaluesorfactory setting.The redLEDremains onconstantly
when the unit is connected to supply voltage and functioning nor-
mally. The LED will begin to flash in the event of an error condition.
Tofacilitateparameteradjustmentandinvertermonitoring,akeypad/
display operator is required. To prevent malfunctions, the inverter
must be brought into nOP status before connecting/disconnecting
the operator (remove the signal at the control release terminal 14).
The operator is available in different versions:
2. Operation of the
inverter
Interface control
Transmit LED flickers
during active serial
communication
Operating-/Error
display
Normal - "LED on"
Error - "LED blinks"
5-digit LED Display with double function keypad
2.1 Digital operator
PartNumber00.F4.010-2009
RS232/RS485
PIN RS485 Signal Meaning
1 – – reserved
2 – TxD Transmit signal/RS232
3 – RxD Receive signal/RS232
4 A' RxD-A Receive signal A/RS485
5 B' RxD-B Receive signal B/RS485
6 – VP Voltage supply-Plus +5V (Imax = 10 mA)
7 C/C' 0V Data reference potential
8 A TxD-A Transmit signal A/RS485
9 B TxD-B Transmit signal B/RS485
Ground-Connection
2.1.1 Interface operator
PartNumber00.F4.010-1009 The Interface operator contains an additional isolated RS232/RS485-
communication port for serial communication to and from the inverter.
12345
6789
For information about other operator versions contact KEBCO!

4F4-S Instuction Manual
Whenswitchingon theinverter,thevalueofparameterCP.1appears.(SeeDrive
mode to switch the keyboard function)
Thefunctionkey(FUNC)changes
between the parameter value and
parameter number.
With UP( ) andDOWN ( )the
value of the parameter number is
increased / decreased .
Generally, when a value is changed, parameter values are immediately
accepted and stored nonvolatile. With some parameters it is necessary to press
ENTER after changing the value in order for the new value to be stored
nonvolatile. When this type of parameter is changed, a decimal point appears
behind the last digit.
If a drive fault occurs during operation, the current display changes to the fault
message, E.XXX. The faultmessage in the display is reset by pressing ENTER.
PressingENTER onlyresetstheerrormessageinthedisplay.Inorder
toresetthefaultitself, thecausemustbeidentifiedand removedand
a reset signal given on terminal 14 or a power-on reset (cycle supply
voltageoffandthenon)mustoccur.IntheInverterstatusdisplay(CP.
2) the fault is still displayed until the inverter has been reset through
the steps listed above.
Operation of the Unit
2.1.2 Keypad
error
ENTER
F/R
START
STOP
START
STOP
FUNC.
SPEED
ENTER
F/R

5F4-S Instuction Manual
POWER TRANSMISSION
FUNC.
SPEED
START
FUNC.
SPEED
ENTER
F/R
Operation of the Unit
2.2 Parameter summary
Display Parameter Adjust. range Resolution Factory setting
CP. 0 Password input 0...9999 1 -
CP. 1 Actual frequency display read only 0.1 Hz -
CP. 2 Inverter status display read only - -
CP. 3 Actual load read only 1 % -
CP. 4 Peak load read only 1 % -
CP. 5 Rated frequency 0...409.58 Hz 0.0125 Hz 50.0 Hz
CP. 6 Boost 0...25.5 % 0.1 % 2 %
CP. 7 Acceleration time 0.01...300 s 0.01 s 10 s
CP. 8 Deceleration time 0.01...300 s 0.01 s 10 s
CP. 9 Minimum frequency 0...409.58 Hz 0.0125 Hz 0 Hz
CP.10 Maximum frequency 0...409.58 Hz 0.0125 Hz 70 Hz
CP.11 Fixed frequency 1 0...409.58 Hz 0.0125 Hz 5 Hz
CP.12 Fixed frequency 2 0...409.58 Hz 0.0125 Hz 50 Hz
CP.13 Fixed frequency 3 0...409.58 Hz 0.0125 Hz 70 Hz
CP.14 Max. ramp current 10...200 % 1 % 140 %
CP.15 Max. constant current 10...200 % 1 % 200 %
CP.16 Speed search 0...7 1 0
CP.17 Voltage stabilization 150...649 V,oFF 1 V oFF
CP.18 Slip compensation -2.50...2.50 0.01 0=oFF
CP.19 Autoboost -2.50...2.50 0.01 0=oFF
CP.20 DC-braking 0...9 1 0
CP.21 Braking time 0...100 s 0.01 s 10 s
CP.22 Relay output 0...25 1 2
CP.23 Frequency level 0...409.58 Hz 0.0125 Hz 4 Hz
FUNC.
SPEED
START
FUNC.
SPEED
ENTER
F/R
Releasing the
CP-Parameters
Locking the
CP-Parameters
(Read only)
2.3 Password input From the factory, the frequency inverter is supplied without
password protection, this means that all parameters can be
adjusted. After programming, the unit can be protected
against unauthorized access thus preventing the values
from being changed.
See the last page for the
actual password values.

6F4-S Instuction Manual
The 4 parameters below can be used to monitor the frequency inverter's
operation.
Displayoftheactualoutputfrequencywitharesolutionof0.0125Hz.The
rotation of the inverter is indicated by the sign.
Output frequency 18.3 Hz, rotation forward
Examples: Output frequency 18.3 Hz, rotation reverse
The status display shows the actual working conditions of the inverter.
Possible displays and their meanings are:
" no Operation " control release (terminal 14) not con-
nected, modulation switched off, output voltage = 0 V,
drive is disabled.
"LowSpeed"norotationsignalForR(terminal12or13),
modulation switched off, output voltage = 0 V.
"ForwardAcceleration"driveaccelerateswithaforward
direction of rotation.
"ForwardDeceleration"drivedecelerateswithaforward
direction of rotation.
" Reverse Acceleration " drives accelerates with a re-
verse direction of rotation.
"ReverseDeceleration"drivedecelerateswithareverse
direction of rotation.
" Forward Constant " drive runs with a constant speed
and a forward direction of rotation.
"ReverseConstant"drive runs with constant speed and
a reverse direction of rotation.
Otherstatusmessagesaredescribedwiththeparameterswhicharerelated
to them.
Displayoftheactualinverterloadinginpercent.100%loadisequaltothe
inverter rated current. Only positive values are displayed, meaning there
is no differentiation between motor and regenerative operation.
Thisdisplaymakesitpossibletorecognize instantaneousloadlevels by
storing the highest value that occurred. The display occurs in percent
(100% = inverter rated current).
WiththeUPorDOWNkeythepeakvaluecanbereset.Switching
off the unit deletes the peak value.
Operation of the Unit
2.4 Operating display
Actual frequency display
Inverter status display
Actual load
Peak load

7F4-S Instuction Manual
POWER TRANSMISSION
Operation of the
Unit
2.5 Basic adjustment
of the drive The following parameters determine the fundamental operating data of the drive. They should be checked and/or adjusted for the application.
Theinverterproducesmaximumvoltagetothemotoratthefrequency set
inthisparameter. Thisparameteristypicallyadjustedforthemotorrated
frequency. Note: Motors can overheat when the rated frequency is
incorrectly adjusted!
Adjustment range: 0...409.58 Hz
Resolution: 0.0125 Hz
Factory setting: 50.0 Hz
Customer adjustment:_______ Hz
Rated frequency
UA
f
100%
CP. 5
Boost
UA
f
CP. 5
CP. 6
Acceleration time
f
t
100 Hz
CP. 7
VOut
VOut
In the lower speed range losses in the motor become greater. This
parameter can be used to boost the voltage in order to over come these
losses. With proper adjustment, the torque output of the motor will
remain constant even at the lowest speeds.
Adjustment range: 0...25.5 %
Resolution: 0.1 %
Factory setting: 2.0 %
Customer adjustment: _______ %
Adjustment: - Using CP.3, determine the load level during no-load
operation at the rated frequency
- Run the motor at 10 Hz and adjust the boost, so that the
same load level occurs as at the rated frequency.
- Whenthemotorrunsatlowspeedscontinuously withtoo
much boost, overheating of the motor can result.
This parameter determines the time required to accelerate from 0 to
100 Hz. The actual acceleration time is proportional to the change in
frequency. See below.
change in frequency x CP.7
actual acceleration time = 100 Hz
Adjustment range: 0.01...300 s
Resolution: 0.01 s
Factory setting: 10 s
Customer adjustment: _______ s
Example: CP. 7 = 10 s ; the drive accelerates from 10 Hz to 60 Hz
change in frequency = 60 Hz - 10 Hz = 50 Hz
actual acceleration time = (50 Hz / 100 Hz) x 10s = 5 s

8F4-S Instuction Manual
Operation of the
Unit
f
t
100 Hz
CP. 8
f
U
REF
CP. 9
CP.10
10 V0 V
Minimum frequency
terminal 4
terminal 5
terminals 4 + 5
Vref
Thisparameterdeterminesthetimerequiredtodeceleratefrom100to0Hz.
The actual deceleration time is proportional to the frequency change.
change in frequency x CP.8
actual deceleration time = 100 Hz
Adjustment range: 0.01...300 s
Resolution: 0.01 s
Factory setting: 10 s
Customer adjustment: _______ s
Example: CP. 8 = 10 s ; the drive should decelerate from 60 Hz to 10 Hz
change in frequency = 60 Hz - 10 Hz = 50 Hz
actual deceleration time = (50 Hz / 100 Hz) x 10s = 5 s
The frequency the inverter outputs with 0V applied to the analog input
or if the activated fixed frequency (CP.11…CP.13) is lower than this
value.
Adjustment range: 0.0...409.58 Hz
Resolution: 0.0125 Hz
Factory setting: 0.0 Hz
Customer adjustment:_______ Hz
The frequency the inverter outputs with 10V applied to the analog input
or if the activated fixed frequency (CP.11…CP.13) is greater than this
value.
Adjustment range: 0.0...409.58 Hz
Resolution: 0.0125 Hz
Factory setting: 70 Hz
Customer adjustment:_______ Hz
Three fixed frequencies can be adjusted. The selection of the fixed
frequencies is made with the terminals 4 and 5.
Adjustment range: 0.0...409.58 Hz
Resolution: 0.0125 Hz
Factory setting: 5/50/70 Hz
Customer adjustment 1:______ Hz
Customer adjustment 2:______ Hz
Customer adjustment 3:______ Hz
If the adjusted values are outside of the fixed limits of CP.9 and CP.10,
then the actual run frequency will be either CP.9 or CP.10.
Deceleration time
Maximum frequency
Fixed frequency 1...3

9F4-S Instuction Manual
POWER TRANSMISSION
Operation of the Unit
2.6 Special
adjustments
Max. ramp current
Max. constant current
t
fset
factual
on
off
on
off
CP.15
CP.14
LAD-stop
Currentlimit
t
t
t
The following parameters serve to optimize the inverter for the application.
These adjustments can be ignored at initial start-up.
This function acts as an adjustable current limit during acceleration or
deceleration. It can be used to prevent the load current from exceeding
the inverters peak current rating, thereby preventing shut down of the
inverter with an E.OC fault. When the load level reaches the adjusted
value , the acceleration or deceleration is stopped until the load drops
below the adjusted value. CP.2 displays "LAS" when the function is
active.
Adjustment range: 10...200%, 200% = off
Resolution: 1 %
Factory setting: 140 %
Customer adjustment: _______ %
This function acts as an adjustable current limit when operating at a
constant speed. It can be used to prevent the load current from
exceedingthe invertersovercurrentlevel,therebypreventingshut down
of the inverter with an E.OC fault. When the load level reaches the
adjusted value , the output frequency is reduced until the load drops
below the adjusted value, after which the frequency is increased again
to the previous value. CP. 2 displays "SLL" when the function is active.
Adjustment range: 10...200%, 200% = off
Resolution: 1 %
Factory Setting: 200 %
Customer adjustment: _______ %

10 F4-S Instuction Manual
Whenstartingthefrequencyinverterintoaspinningmotor,anE.OC fault
can be triggered because of the difference between the actual motor
speedandtheinvertersetspeed.Byactivatingspeedsearch,theinverter
searches for the actual motor speed, adjusts its output frequency to
match. Itwillthenacceleratewiththeadjustedramptime tothegivenset
value. During speed search CP.2 displays "SSF". This parameter deter-
mines under which conditions the function will operate.
Adjustment range: 0...7
Resolution: 1
Factory setting: 0
Customer adjustment: _______
250 V
CP.17 = 230 V
190 V
CP.5 = 50 Hz f
U
N
/U
A
Operation of the Unit
Speed search
Voltage stabilization
VOat VI= 250V stabilized
VOat VI= 250V unstabilized
VOat VI= 190V stabilized
VOat VI= 190V unstabilized
VO= output voltage
VI= input voltage
This parameter can be used to regulate the output voltage in relation to
the rated frequency. Voltage variations at the input as well as in the DC
bus will have only a small influence on the output voltage (V/Hz-
characteristic). The function can be used to adapt the output voltage for
special motors. In the example below the output voltage is stabilized at
230 V (The graph shows 0% boost).
Adjustment range: 150...649 V, off
Resolution: 1 V
Factory setting: off
Customer adjustment: _______ V
VI, VO
Value Condition
0function off
1control release turned on
2power on
3control release & power on
4after fault reset
5after reset & control release
6after reset & power on
7all the above

11F4-S Instuction Manual
POWER TRANSMISSION
Operation of the Unit
1) No compensation
Standard motor
curve,speed
decreases with
increasing torque
2) Good compensation
speed remains
stable with
increasing torque
3) Over compensation
speed is increased
too much
Motor load
Torque
t
Motor
Speed
Motor
Speed
Motor
Speed
t
t
t
A
B
C
13
2
Torque
Speed
Slip compensation
Autoboost
Slip compensation reduces speed variations caused by changes in the
load. The function will increase the output frequency, as the load current of
the motor increases, to maintain the same motor speed. To activate the
function,setthevalueat1.00andoptimizeasdirectedinthediagrambelow
Adjustment range: -2.50...2.50
Resolution: 0.01
Factory setting: 0.00 (= off)
Customer adjustment: _______
Autoboost gives automatic I*R-compensation. When the load torque
increases, the additional resistive losses reduce the magnetizing current in
the motor, leading to a reduction in motor speed. To compensate, auto
boostcanbeusedtoautomaticallyincreasetheappliedmotorvoltageasthe
motor load increases. To activate the function set the value to 1.00 and
optimize as directed below. After making an adjustment, check the
response by monitoring the motor voltage. When the load is removed, the
voltageshoulddroptoalowerlevel. Ifitdoesnot, reducethevalueofCP.19.
Adjustment range: -2.50...2.50
Resolution: 0.01
Factory setting: 0.00 (= off)
Customer adjustment: _______
Slipcompensationandautoboostfunctionsuseamodelofa standardmotor
equalinpowertothe inverterrating. When usingaspecialmotororincase
of inverter oversizing, both functions should be deactivated.
Slip compensation and autoboost adjustment steps see curves A,B,C above.
1. Measure "no load" speed with tachometer. Apply the load to the motor and the speed will drop as in curve A.
2. To begin compensation, set CP.18 and CP.19 to 1.00. Motor speed should increase.
3. If speed is still below "no load" value, increase CP.19. until speed does not change with further increase in
CP.19. See curve B.
4. Increase CP.18 to compensate for the remaining speed difference. See curve C.
5. Verify output voltage drops when load is removed.
Example

12 F4-S Instuction Manual
DC-braking
Braking time
Operation of the Unit
tbrakeactual = CP.21 x factual
100 Hz
During DC-braking, the motor is not decelerated by a controlled ramp.
Quick braking without regen voltage can be achieved by applying a DC
voltage to the motor winding. This parameter determines how the DC-
braking is triggered.
Value Mode of Activation
0 DC-braking deactivated
1 DC-braking activates when direction signal is removed and
the output frequency has reached 0Hz. Braking time is
dependent on CP.21 or until a direction of rotation signal is
given.
2 DC-braking activates as soon as the direction signal is
removed. Braking time dependent on the actual frequency.
3 DC-braking, activates as soon as the direction of rotation
changes. Braking time dependent on the actual frequency.
4 DC-braking activateswhenrotationsignalsare removed and
the actual frequency goes below 4 Hz.
5 DC-braking, when the actual frequency goes below 4 Hz.
6 DC-braking, activates when the set value goes below 4 Hz.
7 DC-braking deactivated
8 DC-braking deactivated
9 DC-braking before the acceleration ramp when a direction
signal is given. The time is dependent on CP.21.
Factory setting: 0
Note: Enter-Parameter
Customer adjustment: _______
The actual braking time is calculated using one of the two methods listed
below. The value of CP.20 determines which one is used.
- entered time = braking time
- entered time relates to 100 Hz and increases/decreases
proportionally to the actual frequency.
Adjustment range: 0.00...100 s
Resolution: 0.01 s
Factory setting: 10 s
Customer adjustment: _______
Calculation of the braking time:
f
100Hz
factual
CP.21
time
brake
actual

13F4-S Instuction Manual
POWER TRANSMISSION
Relay output
Frequency level
Operation of the Unit
Therelayoutput(terminals1,2,3)isadjustedasafaultrelayatthefactory.
Thisparametercanadjustthefunctionofthe outputtoany functionlisted
in the table below.
Value Function
0 No function
1 On when unit has voltage applied to it
2 Fault relay
3 No function
4 Overload alert signal (10s before inverter switch off)
5 Over temperature inverter alert signal
6 Over temperature motor alert signal (10s before switch off)
7 No function
8 Stall load level (CP.15) exceeded
9 LA-/LD-Stop load level (CP.14) exceeded
10 DC-braking active
11 No function
12 Load level (CP.3) > 100%
13 No function
14 Actual value=set value (CP.2 = Fcon or rcon only;
not during noP, LS, error, SSF)
15 Acceleration (CP.2 = FAcc, rAcc, LAS)
16 Deceleration (CP.2 = FdEc, rdEc, LdS)
17 Forward rotation (not during noP, LS error)
18 Reverse rotation (not during noP, LS error)
19 Actual direction of rotation = set direction of rotation
20 Actual frequency > frequency level CP.23
21 Set frequency > frequency level CP.23
22 No function
23 Operatingsignal(activeafterinitialization; offwhen fault occurs)
24 Run signal
25 No function
Factory setting: 2
Note: Enter-Parameter
Customer adjustment: _______
This parameter determines the switching point for the relay output
terminals 1,2,3 when CP.22 = "20”or “21”
After the switching of the relay, the frequency can move within a 0.5 Hz
window, without the relay changing states.
Adjustment range: 0.0...409.58 Hz
Resolution: 0.0125 Hz
Factory setting: 4 Hz
Customer adjustment: _______

14 F4-S Instuction Manual
2.7 The "Drive Mode"
Direction of rotation
F=forward / r=reverse
Status
noP = no control release signal /
LS = neutral position /
50.0 = actual frequency
The set frequency can be changed by pressing or
while holding the key down.
2.7.1 Start / Stop
"Drive Mode"
2.7.2Changing
Direction of
Rotation
STOP
START
ENTER
F/R
Toexitthedrivemodetheinvertermustbeinstandby(display showsnoP
or LS). Press the FUNC and ENTER keys simultaneously for about 3
seconds in order to leave the drive mode. The CP-parameters appear in
the display.
2.7.4Leaving
"Drive Mode"
Drive mode
START
STOP
At first the inverter
is in standby mode
By pressing the
motor decelerates to 0 rpm
and returns to standby
mode.
By pressing
the motor accelerates
to and runs at the
adjusted value
Pressing
changes direction of
rotation
FUNC.
SPEED
+
ENTER
F/R
for 3 seconds
FUNC.
SPEED
The display changes when
is pressed. The set frequency is
displayed.
2.7.3 Speed Setting
FUNC.
SPEED
ThedrivemodeisanoperatingmodeoftheF4-S inverterusedtostartthe
drive manually through the digital operator. After applying a signal to the
controlreleaseterminal14,thesetfrequencyandrotationdirectioncanbe
adjusted bythebuttonsonthedigitaloperator.Inordertoactivatethedrive
mode, a password in CP.0 must be entered. Refer to page 20 for
password information. The display changes as follows.

15F4-S Instuction Manual
POWER TRANSMISSION
Error Diagnosis
Error messages are represented with an "E. " followed by a code that
defines the type of error. When an error occurs, inverter operation stops
andthemotorisnolongercontrolledbytheinverter. The errors andtheir
causes are described below.
Occurs, when the DC bus voltage falls below the permissible value.
(for 230V units 255VDC, for 460V units 425VDC)
Occurs, when the DC bus voltage rises above the permissible value.
(for 230V units 400VDC, for 460V units 800VDC)
Occurs, when the peak current level of the inverter has been exceeded
or during a ground fault condition. For specific current levels consult the
power stage instruction manual and refer to the technical data section.
Occurs when inverter load is greater than 105% for longer than the
allowable time. Consult inverter specifications. See also E.nOL .
3. Error diagnosis
Undervoltage
Possible Causes
- input voltage too low or unstable
- inverter sized too small for given load
- missing input phase or input not connected properly
- connection to an unbalanced supply (i.e. corner
ground delta)
Possible solutions
- install boosting transformer to increase voltage
- step up to next larger sized inverter
- check protective fusing for blown fuses, verify connections
- install ∆to Y isolation transformer between inverter and
main supply voltage
Possible Causes
- input voltage too high
- voltage spikes on supply voltage
- PF correction capacitor switching at sub-station
- deceleration time too short and or braking resistor
not connected.
Possible solutions
- install buck transformer to decrease voltage
- install line choke on input to inverter
- install buck transformer or choke on inverter input
- lengthen decel time or add/connect braking resistor
Overcurrent
Possible causes
- motor larger than recommended for inverter size
- acceleration or deceleration times too short
- voltage boost (CP.6) set too high
- rated frequency (CP.5) of inverter is not adjusted
correctly
- 50 Hz 400V motor running on inverter connected to
480V
Possible solutions
- increase size of inverter, consult inverter specifications
-lengthentimesand/oractivateLADstop function(CP.14)
- lower adjusted value
- check motor rated frequency and adjust inverter rated
frequency the same except in case listed below
- change rated frequency from 50Hz to 60 Hz when input
voltage is 460V or greater
Overload
Possible causes
- motor larger than recommended for inverter size
- increased friction or jam in the mechanical system
- motor incorrectly wired
- rated frequency (CP.5) of inverter is not adjusted
correctly
- 50 Hz 400V motor running on inverter connected to
480V
Possible solutions
- increase size of inverter, consult inverter specifications
- check machine for wear, clear obstructions
- verify motor connection
- check motor rated frequency and adjust inverter rated
frequency the same except in case listed below
- change rated frequency from 50Hz to 60 Hz when input
voltage is 460V or greater
Overvoltage

16 F4-S Instuction Manual
Cooling down phase
completed
Overheat
Overheat cleared
Charging relay error
After an E.OL error you must wait for the inverter to cool down. This
message appears after the cooling down phase is completed. The
E.OL error can only be reset after this message is displayed.
Removing the supply voltage will not defeat the cool down period;
leave supply voltage on until message is displayed.
Occurs,whenthe inverterheatsinktemperatureisgreaterthan158°F.
Occurs when resistance between "OH terminals becomes greater
than 1650 ohms.
Internal or external temperature has dropped to a safe level.
Error "E. OH" can be reset.
Occurs when the charging relay does not close after the DC bus voltage
reaches its normal operating level.
Possible Causes
- insufficient cooling
- insufficient cooling
- ambient temperature too high
- cooling fan (when installed) not functioning
Possible solutions
- observe proper mounting clearances
- clear heatsink of all dirt and debris
- install cooling device to reduce air temp below 113°F
- check for fan obstructions, blades should spin freely.
External Overheat
Possible solutions
- see solutions listed under E.UP
- replace unit with new unit and return old unit for repair
Possible Causes
- see causes listed under E.UP
- charge relay or charge resistor has failed
Possible Causes
- factory jumper loose (not using this function)
- ambient temperature around motor too high
- motor overload, see E.OC and E.OL causes
- Motor temperature sensor cable broken
Possible solutions
- tighten black jumper wire between OH terminals
- install cooling device to reduce air temp
- see E.OC and E.OL solutions
- repair cable
Error Diagnosis

17F4-S Instuction Manual
POWER TRANSMISSION
4. Glossary
Analog/Digital Common
EMC
Energy-Saving Function
Frequency-dependent Switch
Actual Value
LA-Stop
RS232/485
Set Value
Speed Search
Stall
Glossary
The F4-S inverter has potential separated (galvanically isolated)
digital inputs and power supply. With this design, electrical noise
and leakage currents are greatly reduced. As a result, the digital
common (6) serves as a reference for the power supply and all
digital inputs. The analog common (9) serves only as a common
for the analog signals. For best results, it is important to avoid
connecting these two commons together.
Electro- magnetic compatibility, guidelines for reducing high
frequency interference caused by the inverter.
When motors are running under "no-load" conditions, the voltage
can be reduced, and as a result energy can be saved.
Relay or transistor output that activates at a preset frequency.
A value that is measured by sensors in the inverter or a value that
is calculated from a measured value and a preexisting condition.
Accelerationstop,preventsovercurrenterrorsduringacceleration
by stopping the ramp. The current level is specified by the max.
ramp current (CP.14).
RS232, is the standard serial interface for connection between an
inverter and computer or PLC with a cable length of 45 feet
maximum . RS485, is the standard serial interface for multiple
invertersconnectedtoa computerorPLC.Maximumcablelength
is 3000 feet.
Thepresetanalogordigitalvaluewithwhichthefrequencyinverter
shall operate.
Speed search prevents an over current error when starting the
inverter into a running motor. The motor speed is determined and
the inverter begins to accelerate the motor at this frequency.
TheStall-functionprotectstheinverteragainstanE.OCerrorwhile
running at a constant speed. When exceeding the level adjusted
with CP.15, the output frequency is reduced until the load level
drops below the level in CP.15.

18 F4-S Instuction Manual
5. Index
Index
A
Acceleration stop 17
Accelerationtime 5, 7, 19
Actual frequency display 5, 6, 19
Actualload 5, 6, 19
ActualValue 17
Analog inputs 2
Analogoutput 2
Autoboost 5, 11, 19
B
Basic adjustment 7
Boost 5, 7, 19
Braking time 5, 19
C
Changedirection 14
Common 2
Control release 2
Cooling down phase 16
Current limit 9
Current limit resistor error 16
D
DC-braking 5, 12, 19
Deceleration time 5, 8, 19
Digital inputs 2
Digital common 2
Drive Mode 14
E
EMC 17
Energy-SavingFunction 17
Error diagnosis 15
F
Fixed frequency 2, 5, 8, 19
Forward 2
Frequency value 5, 13, 19
Frequency-dependent switch 17
I
I*R - compensation 11
Interfaceoperator 3
Interference voltage 2
Inverter status display 5, 6, 19
K
Keyboard 3, 4
L
LAD -stop 9, 17
LED 3
M
Max.constant current 5, 9, 19
Max.ramp current 5, 9, 19
Maximumfrequency 5, 8, 19
Minimumfrequency 5, 8, 19
Modulation 6,14
O
Operating Display 6
Optimize 11
Overcurrent 15
Overheat 16
Overload 15
Overvoltage 15
P
Password input 5, 19, 20
Peak load 5, 6, 19
Peak value 6
R
Ratedfrequency 5, 7, 19
Relayoutput 2, 5, 13, 19
Releasing 5
RS232/485 3, 17
S
Set value input 2
Set-pointvalue 17
Slipcompensation 5, 11, 19
Specialadjustments 9
Speedsearch 5, 10, 17, 19
Stall-function 17
Start / Stop 14
U
Undervoltage 15
V
Voltagestabilization 5, 10, 19
X
X1 2