Hettich ROTANTA 460 Setup guide

Rev. 01 / 11.09 Andreas Hettich GmbH & Co. KG AR5600EN
Repair instructions
ROTANTA 460 / 460 R
ROTANTA 460 S / 460 RS

2/92
Andreas Hettich GmbH & Co. KG
Föhrenstraße 12, D-78532 Tuttlingen / Germany
Phone [phone] / 705-0
Fax [phone] / 705-125
[email protected], [email protected]
www.hettichlab.com
© 2002 by Andreas Hettich GmbH & Co. KG
All rights reserved. No part of this publication may be reproduced without the prior written permission of
the copyright owner.
Modifications reserved!
AR5600EN / Rev. 01 / 11.09

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Contents
1Introduction...........................................................................................................................6
2Description of the centrifuge.................................................................................................6
2.1 Control panel (A4, A5) ..................................................................................................6
2.2 Supply board (A1).........................................................................................................7
2.3 Frequency converter (A2) .............................................................................................8
2.4 Special features ............................................................................................................9
2.5 Braking chopper (A3) / brake resistor (R1) ...................................................................9
2.6 Motor / tacho system.....................................................................................................9
2.7 Motor-driven lid lock....................................................................................................10
2.8 Imbalance switch ........................................................................................................10
2.9 Key-operated switch (A7, optionally)...........................................................................10
2.10 Machine concept.........................................................................................................10
2.11 Cooling system ...........................................................................................................11
2.11.1 Diagram of the cooling version............................................................................12
2.12 Ventilator control.........................................................................................................13
2.13 Ventilator.....................................................................................................................13
2.14 Offset compensation...................................................................................................13
2.15 Safety devices.............................................................................................................14
3Troubleshooting procedures...............................................................................................14
4Error messages ..................................................................................................................15
4.1 MAINS RESET............................................................................................................15
4.2 Brief description ..........................................................................................................15
4.3 Description and elimination of errors...........................................................................18
5Settings and interrogations.................................................................................................37
5.1 Option: program linkage (only for S-control panel) .....................................................37
5.1.1 Linking programs.................................................................................................37
5.1.2 Changing program links......................................................................................37
5.1.3 Centrifugation run with program linking...............................................................38
5.1.4 Deleting program linking .....................................................................................38
5.2 Option: optical interface (only for S-control panel)......................................................38
5.3 Option: key-operated switch (only for S-control panel)...............................................39
5.4 Setting the lid lock mode.............................................................................................39
5.5 Setting the machine and cooling version ....................................................................40
5.6 Function of the additional jumper................................................................................41
5.7 Initialization.................................................................................................................41
5.7.1 Prerequisites for the initialization ........................................................................41
5.7.2 Initializing the centrifuge with N-control panel.....................................................42
5.7.3 Initializing the centrifuge with S-control panel.....................................................43
5.8 OFFSET compensation ..............................................................................................46
5.9 Imbalance Mode .........................................................................................................48
5.9.1 Setting the imbalance mode on the supply board...............................................48
5.9.2 Setting the imbalance mode in the program .......................................................48

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5.10 Temp. Average Time ..................................................................................................49
5.11 Leading time ...............................................................................................................50
5.12 Parameter for error message °C / *ERROR 58 ..........................................................51
5.12.1 Temperature monitor until reaching the temperature set value ..........................51
5.12.1.1 Setting the temperature monitor with the N-control panel...........................52
5.12.1.2 Setting the temperature monitor with the S-control panel...........................52
5.12.2 Permissible temperature difference after reaching the temperature set value....53
5.12.2.1 Setting the permissible temperature difference with the N-control panel....53
5.12.2.2 Setting the permissible temperature difference with the S-control panel....53
5.13 Parameter interrogation..............................................................................................54
5.13.1 Parameter interrogation N-control panel.............................................................54
5.13.2 Parameter interrogation S-control panel.............................................................54
5.14 Acoustic Signal ...........................................................................................................55
5.14.1 Acoustic Signal N-control panel..........................................................................55
5.14.2 Acoustic signal S-control panel...........................................................................55
5.15 Working hours.............................................................................................................55
5.15.1 Working hours N-control panel............................................................................55
5.15.2 Working hours S-control panel............................................................................56
5.16 Checking the motor slippage ......................................................................................56
5.16.1 Checking the slippage with the N-control panel..................................................56
5.16.2 Checking the slippage with the S-control panel..................................................57
5.17 Checking the temperatures.........................................................................................57
5.17.1 Checking the temperatures with the N-control panel..........................................57
5.17.2 Checking the temperatures with the S-control panel ..........................................58
5.18 Setting the date and time (only in S-control panel).....................................................58
5.19 Centrifugation data displayed after switching on (only in S-control)...........................59
5.20 Immediate display of the centrifugation data after switching on (only in
S-control panel)...........................................................................................................59
5.21 Logging (only in S-control panel)................................................................................59
5.21.1 Error messages...................................................................................................60
5.21.2 Imbalance messages..........................................................................................60
5.21.3 Modification logs .................................................................................................61
5.21.4 Note on the display of date and time...................................................................61
5.22 Setting the display contrast.........................................................................................61
5.23 Imbalance switch-off...................................................................................................63
6Functional check after a repair ...........................................................................................64
7Mounting and removing components..................................................................................64
7.1 Removing the front panel............................................................................................64
7.2 Removing the support sheet of the electronic components........................................65
7.3 Removing the upper part of the centrifuge housing....................................................65
7.4 Motor (M1) ..................................................................................................................66
7.5 Rubber-metal bearings ...............................................................................................67
7.6 Vibration dampers.......................................................................................................67
7.7 Speed sensor..............................................................................................................67

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7.8 Motor-driven lid lock....................................................................................................68
7.8.1 Removing the motor-driven lid lock.....................................................................68
7.8.2 Replacing the motor-lock unit..............................................................................69
7.8.3 Replacing the angle support on the left...............................................................69
7.8.4 Replacing the eccentric disc ...............................................................................70
7.8.5 Replacing the sliding blocks................................................................................70
7.8.6 Replacing the plastic rollers and discs................................................................70
7.8.7 Replacing the microswitch ..................................................................................71
7.9 Control panel (A4, A5) ................................................................................................71
7.9.1 N-control panel (A4)............................................................................................71
7.9.2 S-control panel (A5)............................................................................................71
7.10 EPROM in the control panel .......................................................................................71
7.11 Battery (only in S-control panel)..................................................................................71
7.12 Supply board (A1).......................................................................................................72
7.13 Frequency converter (A2) ...........................................................................................72
7.14 Braking chopper (A3)..................................................................................................73
7.15 Radio interference suppression filter (Z1)...................................................................73
7.16 Brake resistor (R1)......................................................................................................73
7.17 Temperature sensors (only in centrifuges with cooling)..............................................73
7.17.1 Temperature sensor at the top of the centrifuge chamber (T1) ..........................73
7.17.2 Temperature sensor at the bottom of the centrifuge chamber (T2) ....................74
7.17.3 Temperature sensor on the condenser (T3) .......................................................74
7.18 Imbalance switch (S2).................................................................................................74
7.19 Mains switch ...............................................................................................................75
7.20 Appliance plug with overvoltage protection.................................................................75
7.21 Gas spring...................................................................................................................75
7.22 Sealing ring (between the upper part of the centrifuge housing and the lid)...............76
7.23 Key-operated switch (A7; only in S-control panel)......................................................76
7.24 Optical interface (A6; only in S-control panel).............................................................77
8Designation of the components..........................................................................................79
9Technical documents..........................................................................................................82
9.1 Tachometer code configuration of the rotors ..............................................................82
9.1.1 Centrifuge without cooling...................................................................................82
9.1.2 Centrifuge with cooling........................................................................................83
9.2 Cooling diagram..........................................................................................................84
9.3 Connecting diagrams..................................................................................................85
9.3.1 Abbreviations of the cable colours......................................................................85
9.3.2 Connecting diagram centrifuge ...........................................................................86
9.3.3 Transformer connection......................................................................................88
9.3.3.1 Centrifuge without cooling system...............................................................88
9.3.3.2 Centrifuge with cooling system....................................................................88
9.4 Technical specifications..............................................................................................89

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1 Introduction
• Repairs must only be carried out by personnel authorised to do so by the
manufacturer.
Interventions and modifications at centrifuges, which have been conducted
by persons not authorized by the HETTICH company, are at their own risk
and entail the loss off all guarantee and liability claims. In such an event any
guarantee claim or liability claim against the HETTICH company expire.
• Only original spare parts and original accessories licensed by the Hettich company
are allowed to be utilised.
If no original spare parts or no original accessories are used, any guarantee
claim or liability claim against the HETTICH company ceases to exist.
• Information about the operation of the centrifuge please see operating instructions.
• We reserve all rights for these technical documents.
2 Description of the centrifuge
These microprocessor controlled centrifuges mainly consist of the following electrical
components:
• Control panel, microprocessor controlled
− N-control panel, (without control knob)
− S-control panel, (with control knob)
• Supply board, microprocessor controlled
− for centrifuges with cooling
− for centrifuges without cooling
• Frequency converter (motor control), microprocessor controlled
• Motor with speed sensor (speedometer) and imbalance switch
• Braking chopper with brake resistor
• Lid lock
2.1 Control panel (A4, A5)
The control panel is the brain or the master of the centrifuge. This MASTER controls its
SLAVES via a serial data bus system. These SLAVES are the following components:
− supply board
− frequency converter
The control panel carries out the following tasks:
• Managing operator entries and controlling the LCD display
• Saving run programs:
− N-control panel: 3 programs
− S- control panel:89 programs
• Controlling the components:
− supply board via the serial interface
− frequency converter via the release line and the serial interface
• Evaluating the speed sensor (speedometer)
• Evaluating the imbalance switch

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• Evaluating the frequency converter error message line
• Evaluating the message line lid lock open/closed
• Triggering the relay for the voltage supply of the lid lock when the rotor has standstill
• Temperature measurement and evaluation of the temperature sensor at the top of
the centrifuge chamber
• Routine for input, saving and transmitting temperature offset values (offset values
are transmitted to the supply board each time the mains supply is switched on)
• Type of serial interface:
− N-control panel:
5 Volt interface with three wires (16-pole flat ribbon cable, pole 6, 8 and 11)
− S-control panel:
RS 485 interface via two wires (26-pole flat ribbon cable, pole 19 and 20)
• The voltage supply for the control panel is provided by the supply board via the flat
ribbon cable:
− N-control panel: + 15...20 Volt: pole 1, 2 and GND: pole 15, 16
− S-control panel: + 15...20 Volt: pole 1, 2, 25, 26 and GND: pole 15, 16, 17, 18
2.2 Supply board (A1)
The supply board carries out the following tasks:
• Current supply 18 V DC and 5 V DC for the supply board
• Current supply 18 V DC for the control panel
• Temperature measurement and evaluation of the temperature sensor at the bottom
of the centrifuge chamber
• Evaluating the overtemperature switch in the centrifuge chamber
• Temperature measurement and evaluation of the temperature sensor on the
condenser
• Evaluating the overpressure switch (not in ROTANTA 460 series)
• Evaluating the message line lid lock open/closed
• Evaluating the overtemperature switch on the brake resistor (when the overtempera-
ture switch opens, the frequency converter will be switched off)
• Voltage supply for the speed sensor (speedometer)
• Slot for speed sensor cable and transmission of the speed pulses to the control
panel
• Evaluating the speedometer pulses with regard to standstill
• Triggering the relay for the voltage supply of the lid lock when the rotor has standstill
• Slot for imbalance switch and direct transmission of the imbalance signal to the
control panel
• Processing the individual sensor temperatures:
− calculating the ACTUAL temperature
− controlling the cooling units
− controlling the heating
− controlling the solenoid valve
− controlling the condenser ventilator

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• SLAVE behaviour (the requests and commands of the control panel are transmitted
via the serial interface):
− N-control panel:
5 Volt interface with three wires
− S-control panel:
RS 485 interface with two wires
• The 5 Volt interface with three wires is transferred to a RS 485 interface with two
wires.
Interface for the frequency converter: RS 485 interface via two wires
• Transmitting the main enable signal control panel ⇒frequency converter
• Transmitting the error line frequency converter ⇒control panel
• Evaluating the switching statuses of the key-operated switch (e.g. LOCK 1) and
transmitting the information to the control panel via the serial interface (only with
centrifuge with key-operated switch)
• Evaluating the jumper assignment and transmitting the information to the control
panel via the serial interface
− Machine version
− Cooling version
− Service mode
If the processor of the supply board detects an error, it switches off automatically. The
control panel continuously checks the status of the supply board via the serial interface.
The control panel defines the SET temperature and OFFSET temperatures via the
serial interface. The control panel inquires the ACTUAL temperature.
2.3 Frequency converter (A2)
The frequency converter carries out the following tasks:
• Generating the motor current supply
(three-phase current with variable frequency and voltage)
Functional description: The supply voltage is rectified, smoothened and
chopped into a pulse width pattern in three bridge
elements with a microprocessor.
• Monitoring the motor current
• Evaluating the overtemperature switch in the motor
• SLAVE behaviour (the requests and commands of the control panel are transmitted
via the serial interface):
RS 485 Volt interface with two wires
(5-pole flat ribbon cable, pole 2 and 3)
• Evaluating the main enable signal for the frequency converter
(5-pole flat ribbon cable, pole 1)
• Evaluating possible errors and handling the error line
(5-pole flat ribbon cable, pole 4)
• The following are defined by the control panel via the serial interface:
− Speed
− Starting and brake levels
− Control commands START, BRAKE, STOP

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• LED status displays:
In the standby status the red LED illuminates
In the run status the green LED illuminates
In the error status the red LED flashes
If the frequency converter processor detects an error, it switches off automatically and
sets the error line. Then the control panel inquires the type of error via the serial
interface.
2.4 Special features
• The voltage supply of the motor-driven lock is switched via a relay on the supply
board.
This relay can pick up only if the control panel and the supply board have detected a
standstill.
• The N-control panel and the S-control panel are interchangeable.
• Multiprocessor concept:
If a processor stops working, the other two processors still continue monitoring their
area.
If there is a control panel failure, the frequency converter automatically switches off
the drive if no inquiries are made via the interface for longer than 60 seconds.
• Interface concept:
The information transmission is monitored with an additional check sum.
• Hardware concept:
All safety related switches are break contacts. This also ensures that loose contacts
and cable rupture can be detected.
2.5 Braking chopper (A3) / brake resistor (R1)
• The braking chopper transfers the electrical energy produced during braking, from a
voltage of approx. 390 Volt, to the brake resistor in a controlled manner.
• An overtemperature switch protects the brake resistor against fire. If the braking
chopper has a short circuit, the brake resistor becomes hot due to the high current,
the overtemperature switch opens the circuit and two relays on the supply board
separate the frequency converter from the mains supply.
2.6 Motor / tacho system
• The motor is a 4-pole three-phase asynchronous motor (2 pairs of poles).
• A speed sensor (speedometer) which is screwed onto the motor receives
− the rotor code information and
− the speed information (6 pulses per revolution)
from the magnets of the tacho ring attached to the rotor.
• The control panel monitors and regulates the ACTUAL speed.
− Double safety: In addition, the frequency converter has been programmed in
such a way that it is not possible to set a speed value which is
higher than the permissible rotor speed.
• The control panel and the supply board monitor the rotor standstill.
− Double safety: The lid can be opened only when the control panel and the
supply board have detected a standstill.

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2.7 Motor-driven lid lock
• The lid can be opened only if the motor of the lid lock is triggered. To do so, press
the key when the rotor is not moving and mains voltage exists. The jumper for the
lid lock must be plugged to the position "Mot" on the supply board.
• The motor locks the lid only if both lid brackets have actuated both switches in the lid
lock.
• You can start the centrifuge only if the lid is closed. A microswitch on the lid lock
detects the lid lock position.
2.8 Imbalance switch
• A switch (break contact) detects imbalance.
• Imbalance is detected only in running mode (starting, centrifuging and braking).
• If imbalance is detected, the drive is brought to a standstill.
2.9 Key-operated switch (A7, optionally)
• With the key-operated switch different program locks can be select, see chapter
"Option: key-operated switch (only for S-control panel)".
The key position will be displayed.
• If the key is removed, the selected program lock is locked and can be changed no
more.
2.10 Machine concept
• The machine version is set with jumper assignment A.4, A.5 and B.7 on the coding
strip of the supply board, see chapter "Setting the machine and cooling version".
• This machine version must comply with the control panel:
− N-control panel: correct EPROM
− S-control panel: correct initialization
• This machine version must comply with the installed and initialized frequency
converter.
• The machine version has a binary code:
Jumper /
Value
Version Machine A.4 A.5 B.7
1 2 16
19 ROTANTA 460 230 V / 115 V X X X

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2.11 Cooling system
• The cooling version is set with jumper assignment A.0 to A.2 on the coding strip of
the supply board, see chapter "Setting the machine and cooling version".
• This cooling version must comply with the control panel:
− N-control panel: correct EPROM
− S-control panel: correct initialization
• The cooling version has a binary code:
Jumper /
Value
Version Cooling System A.0 A.1 A.2
1 2 4
0 No cooling system
1 1 compressor X
2 1 compressor, heating/cooling X
7 No cooling system, laboratory thermostat X X X
• Hardware control:
− If the lid is opened, the cooling or heating system switches off.
− If the overtemperature switch is opened, the heating system switches off.
• Software control:
− If the condenser temperature is higher than 58°C, the cooling system switches off.
− The processor on the supply board controls the cooling system.
− The control panel sets the nominal temperature and the temperature of the
temperature sensor T1 on the supply board via the serial interface.
− The control panel inquires the ACTUAL temperature via the serial interface.
− Temperature sensor:
T1 Temperature sensor at the top of the centrifuge chamber
This temperature is processed in the control panel.
T2 Temperature sensor at the bottom of the centrifuge chamber
This temperature is processed on the supply board.
The T2 temperature sensor housing also includes an overtemperature switch.
It switches off the drive in cooling centrifuges when the temperature is > 60°C and
in heating/cooling centrifuges if it is > 80°C.
Temperature determination:
During centrifugation the temperature is determined on the basis of the
relationship between T1 and T2. This occurs in different ways depending on the
speed range (see chapter "Diagram of the cooling version, sensor evaluation").
During standstill, the temperature is determined only with the T2 temperature
sensor.
The switching temperatures depend on the cooling version, see chapter "Diagram
of the cooling version“
T3 Temperature sensor on the condenser
This temperature is used for controlling the ventilator speed.

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2.11.1 Diagram of the cooling version
-1 +1 +2-2
∆
Τ
+3 +4 +5 +6 +7
-3
-4
improvement of the displayed temperature
(can be deactivated by setting a jumper on position B.3)
Set value
speed range 5/5 to 4/5 of n-max rotor
speed range 4/5 to 3/5 of n-max rotor
speed range 3/5 to 2/5 of n-max rotor
speed range 2/5 to 1/5 of n-max rotor
speed range 1/5 to n-min
If the set temperature is >= 20°C, the cooling system
remains switched off during standstill!
sensor evaluation
1 : 1
2 : 1
3 : 1
4 : 1
5 : 1
Explanation on:
temperature sensor temperature sensor
T1 : T2
ON a) = cycle time 60 s ON / 6 min OFF
ON b) = cycle time 90 s ON / 6 min OFF
5/5 to 4/5 of n-max
4/5 to n-min
5/5 to n-min
5/5 to n-min
OFF at
set value -1°K
OFF at
set value -0,5°K
ON at
set value +0,5°K
ON at
set value +0,5°K
OFF at
set value +1°K
OFF at
set value +4°K
ON a)
at set value+5°K ON b)
at set value +7°K
only sensor T2 only sensor T2
cooling
cooling
heating
switched off
heating
switched off
cooling
cooling cooling
centrifugationbrakin
g
standstill
heating
ON at
set value -2,5°K OFF at
set value -0,5°K
ON at
set value +2°K
T1 : temperature sensor at the top of the centrifuge chamber
T2 : temperature sensor at the bottom of the centrifuge chamber
The cooling will only be switched on 15 s after start

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2.12 Ventilator control
• The ventilator control is a temperature-dependent phase control.
• If the cooling system switches on, the ventilator runs with a fixed start speed.
• When the condenser temperature rises, the ventilator runs faster.
• At 32 °C, or at the latest after 60 seconds, the ventilator speed regulation is
activated and the ventilator speed is regulated to achieve a constant temperature of
34°C at the condenser.
• If the cooling system is switched off and the condenser temperature falls, the
ventilator speed is reduced until minimum speed is achieved.
• If the temperature is lower than 28 °C, the phase control is not triggered, the
ventilator comes to a standstill.
Centrifuge type Start speed Maximum speed Minimum speed
ROTANTA 460 R / RS
230 V / 50 Hz approx. 2000 RPM approx. 2700 RPM approx. 900 RPM
ROTANTA 460 R / RS
230 V / 60 Hz approx. 1900 RPM approx. 2950 RPM approx. 820 RPM
• The ventilator runs in a temperature-controlled manner also if the lid is open.
• If there is condenser overtemperature (overpressure in the system) i.e. temperature
sensor T3 indicates a temperature > 58 °C (3.31 V), the cooling system and the
drive are switched off, but the condenser ventilator continues running.
2.13 Ventilator
• The ventilator cools down the refrigerant which flows through the condenser.
• The ventilator speed is controlled with the temperature sensor T3.
• This speed control keeps the pressure in the cooling system constant as far as
possible.
2.14 Offset compensation
• The offset compensation is carried out to balance the tolerances of the temperature
sensors and the electronic system.
After replacing: Offset compensation:
− a temperature sensor Compensation of the concerned temperature
sensor.
− the supply board Compensation of the temperature sensors T2
and T3.
− the control panel Compensation of the temperature sensor T1
and read out the old offset values of T2 and
T3 and enter them in the new control panel.
− the control panel EPROM Compensation is not required

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2.15 Safety devices
Mains input ⇒overvoltage protection
Mains switch ⇒with thermal overload protection
Radio interference
suppression filter ⇒between supply board and frequency converter
Frequency converter ⇒electronically protected
Motor ⇒overtemperature switch > 135 °C
Cooling system ⇒overtemperature switch in the centrifuge chamber,
software monitoring of the temperature sensor T3 on the
condenser
PE connection ⇒additional earthing of the device (only with 115 V model)
3 Troubleshooting procedures
• Fuses in installation in which centrifuge is installed are intact.
• Supply voltage present at (see circuit diagram):
− Connecting cable
− Appliance plug
− Overvoltage protection (F4)
− Mains switch (Q1)
− Supply board, plugs X21 and X29.
• Look for the displayed error code in the chapter "Error messages".
• Remedy the error according to the instructions.
• Carry out a functional check after every repair and whenever a component is
replaced, see chapter "Functional check after a repair".

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4 Error messages
4.1 MAINS RESET
• Switch off the mains switch.
• Wait for 10 seconds and then switch on the mains switch again.
4.2 Brief description
Error designation No. Brief description Page
TACHO-ERROR 01 Speedometer pulses break down during rotation 18
TACHO-ERROR 02 No speedometer pulses after start command 18
IMBALANCE (03) Imbalance on motor axle 19
CONTROL-ERROR 04 Lid lock error, lid opened without recognizing that
motor had stopped 19
N > MAX 05 Excessive speed error, 250 RPM above n-max of
rotor 19
CONTROL-ERROR 06 Lid lock - error
Message:
from control panel →lid lock open
from supply board →lid lock closed
20
CONTROL-ERROR 07 Lid lock - error
Message:
from control panel →lid lock closed
from supply board →lid lock open
20
CONTROL-ERROR 08 Standstill error
Message:
from control panel →standstill
from supply board →no standstill
20
CONTROL-ERROR 09 Standstill error
Message:
from control panel →no standstill
from supply board →standstill
20
ROTORCODE 10 Invalid rotor code 21
MAINS INTERRUPT (11) Mains interruption 21
VERSION-ERROR 12 Error in initialization 21
N < MIN 13 Speed error, slippage is too great 22

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Error designation No. Brief description Page
CONTROL-ERROR 21 N-control panel - error: speed 22
CONTROL-ERROR 22 N-control panel - error: I²C-bus 22
CONTROL-ERROR 23 N-control panel - error: display memory 22
CONTROL-ERROR 24 N-control panel - error: clock timeout 22
CONTROL-ERROR 25 N-control panel - error: EEPROM 22
CONTROL-ERROR 27 N-control panel - error: EPROM defective 23
N > ROTOR-MAX --- N-control panel - error: nominal speed is higher
than permitted rotor speed
or nominal RCF is higher
than permitted rotor RCF
23
CONTROL-ERROR 26 Incorrect feedback, control panel input do not
recognize the expected signal 22
SER I/O-ERROR 30 No connection between control panel and serial
interface 23
SER I/O-ERROR 31 No connection between frequency converter and
serial interface 23
SER I/O-ERROR 32 No connection between supply board and serial
interface 24
SER I/O-ERROR 33 Data incorrectly transmitted from the componentry 24
SER I/O-ERROR 34 Data incorrectly transmitted between control panel
and frequency converter 24
SER I/O-ERROR 35 Data incorrectly transmitted between control panel
and supply board 24
SER I/O-ERROR 36 No acknowledgement (NAK) from frequency
converter to control panel 25
SER I/O-ERROR 37 No acknowledgement(NAK) from supply board to
control panel 25
°C / *-ERROR 50 Overpressure in cooling system 25
°C / *-ERROR 51 Overtemperature on condenser 26
°C / *-ERROR 52 Overtemperature in centrifuge chamber 26
°C / *-ERROR 53 Temperature sensor at the bottom of the centrifuge
chamber is defective 27
°C / *-ERROR 54 Temperature sensor at the top of the centrifuge
chamber is defective 27
°C / *-ERROR 55 Temperature sensor on the condenser is defective 28
LOCK-ERROR 57 Program locking is defective 28
°C / *-ERROR 58 Temperature deviation too high 29

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Error designation No. Brief description Page
FU/CCI-ERROR 60 Faulty release signal to frequency converter 29
FU/CCI-ERROR 61 Frequency converter - error: computing section 30
FU/CCI-ERROR 62 Frequency converter - error: undervoltage 30
FU/CCI-ERROR 63 Frequency converter - error: overcurrent 30
FU/CCI-ERROR 64 Frequency converter - error: overvoltage 31
FU/CCI-ERROR 65
Frequency converter - error: I ∗t switch-off for motor 31
FU/CCI-ERROR 66
Frequency converter - error: I ∗t switch-off of
frequency converter
31
FU/CCI-ERROR 67 Frequency converter - error: overtemperature in
motor (external)
32
FU/CCI-ERROR 68 Frequency converter - error: overtemperature in
frequency converter
32
FU/CCI-ERROR 69 Frequency converter - error: EEPROM 33
CONTROL-ERROR 90 S-control panel - error: EPROM 33
CONTROL-ERROR 91 S-control panel - error: RAM 33
CONTROL-ERROR 92 S-control panel - error: difference between EEPROM
and RAM 34
CONTROL-ERROR 94 S-control panel - error: Watchdog 34
CONTROL-ERROR 95 S-control panel - error: inadmissible operative state 34
N > ROTOR - MAX 96 S-control panel - error: nominal speed is higher
than permitted rotor speed
or nominal RCF is higher
than permitted rotor RCF
35
CONTROL-ERROR 97 S-control panel - error: EEPROM 35
CONTROL-ERROR 99 S-control panel - error: hardware failure in error
management
35
INDEFINITE S-control panel - error: not specified error 36
BATT Battery is empty 36

18/92
4.3 Description and elimination of errors
TACHO - ERROR 01
Error During centrifugation the speedometer pulses are interrupted.
Consequences
of the error The rotor slows down until it stops. After the rotor stops, there is a DC braking for 30 sec.
A MAINS RESET during slowing-down causes a DC braking for 3
minutes.
After the DC braking, the “open the lid” release takes place.
Further cooling until the SET temperature is achieved.
Cause of error/
measurements • Speed sensor (speedometer) is defective or loose contact in the
plug. Measure the speedometer pulses on the supply board (A1) at
plug X5, pin 4 - pin 2.
• Flat ribbon cable to the control panel (A4, A5) or flat ribbon cable to
the frequency converter (A2) is defective.
• Supply board (A1) or control panel (A4, A5) or frequency converter
(A2) is defective.
Delete error
code Open the lid. Turn the rotor by hand and carry out a MAINS RESET while the rotor is rotating.
− In the S-control panel, CONTROL - ERROR 08 could appear in the
display after TACHO - ERROR 01 is deleted.
TACHO - ERROR 02
Error After starting the centrifugation the control panel receives no
speedometer pulses.
Consequences
of the error The rotor slows down until it stops. After the rotor stops, there is a DC braking for 30 sec.
A MAINS RESET during slowing-down causes a DC braking for 3 min.
After the DC braking, the “open the lid” release takes place.
Further cooling until the SET temperature is achieved.
Cause of error/
measurements • Start implemented without rotor
• Motor is not connected
• Motor is defective
• Speed sensor (speedometer) is defective or loose contact in the
plug. Measure the speedometer pulses on the supply board (A1) at
plug X5, pin 4 - pin 2.
• Flat ribbon cable to the control panel (A4, A5) or flat ribbon cable to
the frequency converter (A2) is defective.
• No enable signal at the frequency converter (A2) (after a start, the
green LED on the frequency converter must illuminate), also refer to
FU / CCI – ERROR 60.
• Supply board (A1) or control panel (A4, A5) or frequency converter
(A2) is defective.
Delete error
code Open the lid. Turn the rotor by hand and carry out a MAINS RESET while the rotor is rotating.

19/92
IMBALANCE (03)
Error Imbalance on the motor axle.
Consequences
of the error The centrifuge slows down until the “open the lid” release occurs. Further cooling until the SET temperature is achieved.
Cause of error • Weight difference in the rotor components
• Supporting lugs are not lubricated
• Wrong IMBALANCE MODE has been set (see chapter "Imbalance
Mode")
• Imbalance switch (S2) is not connected
• Imbalance switch (S2) is defective
• Loose contact in the cable or in the plug
• Flat ribbon cable to the control panel (A4, A5) is defective
• Control panel (A4, A5) or supply board (A1) is defective
Delete error
code Open the lid or carry out a MAINS RESET.
CONTROL - ERROR 04
Error Lid lock was opened during centrifugation.
Consequences
of the error The centrifuge slows down until the “open the lid” release occurs. Further cooling until the SET temperature is achieved.
Cause of error • Lid lock (Y1) is defective and can be opened during centrifugation.
• Loose contact in the cable or in the plug
• Flat ribbon cable to the control panel (A4, A5) is defective
• Control panel (A4, A5) or supply board (A1) is defective
Delete error
code Open the lid and close it again or carry out a MAINS RESET. In the S-control panel, CONTROL – ERROR 06 or CONTROL –
ERROR 08 could appear in the display after CONTROL – ERROR 04
is deleted.
N > MAX 05
Error Overspeed. The speed detected by the speed sensor is 250 RPM
higher than the maximum rotor speed (n-max rotor).
Consequences
of the error The centrifuge slows down until the “open the lid” release occurs. Further cooling until the SET temperature is achieved.
Cause of error • The insulation of the speed sensor cable is defective
• Loose contact in the speed sensor cable
• Speed sensor is defective
• Flat ribbon cable to the control panel (A4, A5) is defective
• Control panel (A4, A5) or frequency converter (A2) or supply board
(A1) is defective
Delete error
code Carry out a MAINS RESET.

20/92
CONTROL - ERROR 06
Error Lid lock message is faulty.
Control panel indicates: lid lock open
Supply board indicates: lid lock closed
Consequences
of the error The centrifuge slows down until the “open the lid” release occurs. Further cooling until the SET temperature is achieved.
Cause of error • Flat ribbon cable to the control panel (A4, A5) is defective
• Control panel (A4, A5) or supply board (A1) is defective
Delete error
code Carry out a MAINS RESET.
CONTROL - ERROR 07
Error Lid lock message is faulty.
Control panel indicates: lid lock closed
Supply board indicates: lid lock open
Consequences
of the error The centrifuge slows down until the “open the lid” release occurs. Cooling system is switched off.
Cause of error • Flat ribbon cable to the control panel (A4, A5) is defective
• Supply board (A1) or control panel (A4, A5) is defective
Delete error
code Carry out a MAINS RESET.
CONTROL - ERROR 08
Error Standstill message is faulty.
Control panel indicates: standstill
Supply board indicates: no standstill
Consequences
of the error Braked slow-down. Further cooling until the SET temperature is achieved.
Cause of error • Flat ribbon cable to the control panel (A4, A5) is defective
• Control panel (A4, A5) or supply board (A1) is defective
Delete error
code Carry out a MAINS RESET.
CONTROL - ERROR 09
Error Standstill message is faulty.
Control panel indicates: no standstill
Supply board indicates: standstill
Consequences
of the error Braked slow-down. Further cooling until the SET temperature is achieved.
Cause of error • Flat ribbon cable to the control panel (A4, A5) is defective
• Control panel (A4, A5) or supply board (A1) is defective
Delete error
code Carry out a MAINS RESET.