Hettich ROTINA 420 R Setup guide

06.08 Andreas Hettich GmbH & Co. KG AR4701EN
ROTINA 420
ROTINA 420 R
Repair instructions

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Andreas Hettich GmbH & Co. KG
Föhrenstraße 12, D-78532 Tuttlingen / Germany
Phone [phone]
Fax [phone]
[email protected], [email protected]
www.hettichlab.com
© 2007 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!
AR4701EN / 06.08

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Contents
1Introduction ..............................................................................................................6
2Symbol meanings.....................................................................................................6
3Description of the centrifuge.....................................................................................7
3.1 Block diagram of the control..............................................................................7
3.2 Operating panel (A2).........................................................................................8
3.3 Electronics ROTINA 420 (A1) resp. ROTINA 420R (A1)..................................8
3.4 Special features ................................................................................................9
3.5 Brake resistor (R1)............................................................................................9
3.6 Motor (M1) / Tacho system (B4, B2.1) ..............................................................9
3.7 Imbalance sensor (B2.2) .................................................................................10
3.8 Motor-driven lid lock (A3) ................................................................................10
3.9 Cooling system................................................................................................10
3.10 Safety devices.................................................................................................11
4Troubleshooting procedures...................................................................................11
5Error messages......................................................................................................12
5.1 Perform a MAINS RESET ...............................................................................12
5.2 Brief description ..............................................................................................12
5.3 Description and elimination of errors...............................................................15
6Settings and interrogations.....................................................................................35
6.1 Summary of the possible settings and interrogations...................................... 35
6.2 Inquiry the system information ........................................................................36
6.3 Inquire and change the operating hours and inquire the number of the
centrifugation runs........................................................................................... 37
6.4 Set the acoustic signal ....................................................................................38
6.5 Set the centrifugation data displayed after switch-on......................................40
6.6 Set the functions Ramp Unit, RCF-Integral, B-Ramp and Multi programs ......41
6.7 Set the address of the centrifuge ....................................................................41
6.8 Logging the occurred faults............................................................................. 42
6.9 Logging of certain procedures (events)...........................................................45
6.10 Speed values during the centrifugation run.....................................................47
6.11 Check both speed sensors..............................................................................48
6.12 Set the centrifuge model .................................................................................49
6.13 Blank the centrifuge model in the display........................................................50

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6.14 Cooling parameters ........................................................................................ 51
6.14.1 Set the temperature unit .......................................................................... 51
6.14.2 Inquire the temperature values ................................................................ 52
6.14.3 Deactivate the temperature sensor (B2) at the top of the
centrifuge chamber.................................................................................. 54
6.14.4 Compensate the temperature sensors .................................................... 55
6.15 Imbalance values............................................................................................ 57
6.15.1 Logging the maximum imbalance values................................................. 57
6.15.2 Inquiry the current and the maximum imbalance values.......................... 58
6.15.3 Setting the imbalance switch-off .............................................................. 59
6.16 Set the transmission rate (baud rate) of the serial interface............................ 61
6.17 Function test ................................................................................................... 62
6.18 Delete programs and program linking............................................................. 68
6.19 Display the contents of the memory cells of the EEPROM ............................. 69
6.20 Initialise the EEPROM .................................................................................... 70
6.21 Automatic repetition of the centrifugation run.................................................. 71
7Update the software of the control processor ........................................................ 73
7.1 Install the flash-program on the PC ................................................................ 73
7.2 Perform a software update.............................................................................. 73
8Functional check after a repair............................................................................... 75
9General arrangement of the components .............................................................. 76
10 Mounting and removing components ................................................................. 80
10.1 Removing the front panel................................................................................ 80
10.2 Removing the support sheet of the electronics (A1) ....................................... 80
10.3 Hook in the front panel at the support sheet for electronics (A1) .................... 81
10.4 Removing the upper part of the centrifuge housing ........................................ 81
10.5 Removing Motor (M1) / Rubber-metal bearings / Speed sensor
(B2.1, at the bottom of the motor) / Imbalance sensor (B2.2) ......................... 82
10.6 Speed sensor (B4, on top of the motor).......................................................... 82
10.7 Motor-driven lid lock........................................................................................ 83
10.7.1 Removing the motor-driven lid lock ......................................................... 83
10.7.2 Replacing the left lid lock......................................................................... 83
10.7.3 Replacing the right lid lock....................................................................... 83
10.7.4 Replacing the eccentric disc.................................................................... 84
10.7.5 Replacing the sliding blocks .................................................................... 84
10.8 Electronics (A1) .............................................................................................. 85

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10.9 Operating panel (A2).......................................................................................85
10.10 Rotary encoder (S1) ....................................................................................85
10.11 Brake resistor (R1) with overtemperature switch.........................................86
10.12 Temperature sensor (B1) at the bottom of the centrifuge chamber
(only in centrifuges with cooling)..................................................................86
10.13 Temperature sensor (B3) at the condenser
(only in centrifuges with cooling)..................................................................87
10.14 Fan (M3) at the condenser (only in centrifuges with cooling) ......................87
10.15 Fan (M5) at the motor (only in centrifuges with cooling) .............................. 87
10.16 Starting capacitor / starting relay (only in centrifuges with cooling) .............88
10.17 Mains switch (F1) ........................................................................................88
10.18 Appliance plug (A4 resp. X1)....................................................................... 88
10.19 Transformer (T1, only in 120 V version) ......................................................89
10.20 Circuit breaker (F2, only in 120 V version) ..................................................89
10.21 Packing ring.................................................................................................89
10.22 Pneumatic spring.........................................................................................90
11 Technical documents..........................................................................................91
11.1 Tachometer code configuration of the rotors...................................................91
11.2 Cooling diagram..............................................................................................92
11.3 Connecting diagram ........................................................................................93
11.3.1 Abbreviations of the cable colours ...........................................................93
11.3.2 Connecting diagram ROTINA 420 / 420 R...............................................94
11.4 Technical specifications ..................................................................................97

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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 Andreas Hettich GmbH & Co. KG
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 Andreas Hettich GmbH & Co. KG company expire.
• Only original spare parts and original accessories licensed by the Andreas Hettich
GmbH & Co. KG 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 Andreas Hettich GmbH & Co. KG
company ceases to exist.
• Information about the operation of the centrifuge please see operating instructions.
• We reserve all rights for these technical documents.
2 Symbol meanings
Symbol on the machine:
Attention, general hazard area.
Before using the centrifuge implicitly read the operating instructions and pay attention to
the safety relevant references!
Symbol in the repair instructions:
Attention, general hazard area.
This symbol refers to safety relevant warnings and indicates possibly dangerous
situations.
The non-adherence to these warnings can lead to material damage and injury to
personal.
Symbol in the repair instructions:
Warning! Danger for human lives by electric shock.
Symbol on the machine and in the repair instructions:
Beware of hot surface.
Symbol on the machine:
Plastic suspension can only be used in temperatures up to a maximum of 40°C / 104°F.
Symbol in the repair instructions:
This symbol refers to important circumstances.
Symbol on the machine:
Symbol for the separate collection of electric and electronic devices according to the
guideline 2002/96/EG (WEEE). The device belongs to Group 8 (medical devices).
Applies in the countries of the European Union, as well as in Norway and Switzerland.

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3 Description of the centrifuge
3.1 Block diagram of the control
Flash-Memory
serial interface
RS232
S104 S602 S701
PROG T/°C RCF RPM t/min
PROG T/°C RCF RPM TIME
START
STOP
OPEN
12:30450020
199
electronic operating panel
S106
line filter
S700
power input 200 - 240 V
S106
S604 S703S707
S704 S706 S900 S904
15V 5V5V 2.5V 5V
frequency converter
(FC)
drive - processor
FC- 3~ driver
speed
sensor B4
S104
brake resistor
(R1)
overtemperature
switch (F3)
at the brake
resistor (R1)
control - processor
motor-driven
lid lock
M4
1~
~
S905
S1001 S1000
3x
centrifuge-
control
RS 232 from / to PC - programming - controlling
electronics
ROTINA 420 / 420R
EEPROM
PFC-switching
power supply
S100
S906
power input
100 -127 V
transformer
~~
120 V 230 V
Connection only with power input 200 - 240 V
cutoff
PCF
imbalance
sensor (B2.2)
compressor
(M2 / M2.1)
1)
fan (M5)
for cooling
the motor (M1)
1)
fan (M3)
at the condenser
1)
temperature sensor
(B3)
at the condenser
1)
temperature sensor
(B1) in
centrifuge chamber
overtemperature
switch
1)
1)
heating (E1)
2)
1) only in centrifuges with cooling 2) only in centrifuges with option heating/cooling
overtemperature
switch
Motor M1
M 3~

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These microprocessor controlled centrifuges mainly consist of the following electrical
components:
• Operating panel (A2)
• Electronics ROTINA 420 (A1) resp. Electronics ROTINA 420R (A1)
• Motor (M1) with 2 speed sensors (B2.1, B4) and an imbalance sensor (B2.2)
• Brake resistor (R1)
• Motor-driven lid lock (A3)
• Cooling system
3.2 Operating panel (A2)
The buttons, the LCD display, the status LEDs and the acoustic beeper are located on
the operating panel.
The operating panel is connected with the Electronics (A1) via a 20-pole flat ribbon
cable.
3.3 Electronics ROTINA 420 (A1) resp. ROTINA 420R (A1)
There are 2 microprocessors on the Electronics. Both processors (control- and drive-
processor) are communicating internal via a serial interface.
The control-processor carries out the following tasks:
• Reading in the buttons and controlling the LCD display and the LEDs.
• Saving of 99 run programs.
• Evaluating the errors recognized by the frequency converter.
• Voltage supply and evaluation of both speed sensors (B2.1, B4, speedometer).
• Voltage supply and evaluation of the imbalance sensor (B2.2).
• Controlling the motor-driven lid lock.
• Voltage supply 15 V DC and 5 V DC for the operating panel.
• Evaluating the temperature sensors T1, T2 (B1, B3) and controlling the cooling.
• Evaluating the overtemperature switch in the centrifuge chamber.
• Status indication with a yellow LED:
All functions are all right: the yellow LED lights up
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 (M1).
• The braking chopper transfers the electrical energy produced during braking, from a
voltage of approx. 400 Volt, to the brake resistor in a controlled manner.

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• Status indication with a green LED:
Standby: the green LED lights up
Centrifugation run: the green LED lights up
Case of error: the green LED flashes
If the drive-processor detects an error, it switches off the motor.
3.4 Special features
• Multiprocessor concept:
The control- and the drive-processor monitoring one another. If one processor stops
working, the other processor switches off the drive.
• 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.
3.5 Brake resistor (R1)
• An overtemperature switch (F3) protects the brake resistor (R1) against fire. If the
braking chopper has a short circuit, the brake resistor becomes hot due to the high
current, and the overtemperature switch (F3) disconnects the supply voltage of the
centrifuge.
3.6 Motor (M1) / Tacho system (B4, B2.1)
• The motor (M1) is a three-phase asynchronous motor with two pairs of poles.
• A speed sensor (B4, 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.
• An additional speed sensor (B2.1, speedometer) is together with the imbalance
sensor (B2.2) in one housing. This housing is screwed to the bottom of the motor.
The speed signal (1 pulse per revolution) will be triggered by a magnet fixed at the
motor axle. This signal is used for the release of the motor-driven lid lock.
• The Electronics (A1) monitors and regulates the speed.
− Double safety: The drive-processor has been programmed in such a way that it
switches off the drive when the speed is higher than the permis-
sible rotor speed. Then error message "FU/CCI-ERROR 61.19
Overspeed" will be displayed.
• The Electronics (A1) monitors the rotor standstill.

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3.7 Imbalance sensor (B2.2)
• An electronic sensor monitors the imbalance.
• The imbalance sensor (B2.2) and the speed sensor (B2.1) are together in one
housing, screwed to the bottom of the motor (M1).
• Imbalance is detected only in running mode (run up, centrifuging and braking).
• If impermissible imbalance is detected, the drive switches off and the rotor slows
down braked until it stops.
3.8 Motor-driven lid lock (A3)
• The lid can be opened only if the Electronics (A1) has detected rotor standstill.
• By pressing the key
STOP / OPEN
the lid opens motor-driven.
• The motor locks the lid only if both lid brackets actuate both lid switches (Ll, Lr), the
position switch (Mo) for position "lid opened" is actuated and the rotor has standstill.
• The centrifuge can only be started when the lid is closed.
3.9 Cooling system
• The cooling system is a hermetical system.
• The cooling system consists of the following components:
− Compressor (M2, M2.1)
− Cooling tubes around the centrifuge chamber (evaporator)
− Condenser
− Dryer
− Fan (M3)
− Temperature sensor T1 (B1) and overtemperature switch in the centrifuge
chamber
− Temperature sensor T3 (B3) on the condenser
• In the housing of the temperature sensor T1 (B1) also the overtemperature switch is
included. With centrifuges with cooling the drive switches off, when the temperature
is > 60°C / > 140°F, and with option Heating/Cooling > 120°C / > 248°F.
• The refrigerant will be cooled down with a fan (M3). The speed of the fan is
controlled dependent to the temperature at the condenser.
• When opening the lid of the centrifuge, the cooling system switches off.
• When the rotor is at standstill and the lid is closed the centrifuge chamber will be
cooled on the preselected temperature, if this is lower than 20°C / 68°F.
During the standby-cooling the compressor is time-cycle controlled (2 minutes ON /
3 minutes OFF).

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3.10 Safety devices
Mains switch ⇒with thermal overload protection
Over voltage protection and
radio interference suppression
filter
⇒on Electronics (A1)
Additional radio interference
suppression filter
⇒in mains input circuit (only with 4706-01)
Frequency converter ⇒on Electronics (A1), electrically protected
Motor ⇒Overtemperature switch (> 150 °C / > 302°F)
Centrifuge chamber ⇒Overtemperature switch (> 60 °C / > 140°F,
with option Heating/Cooling > 120°C / > 248°F)
4 Troubleshooting procedures
• Fuses in installation in which centrifuge is installed are intact.
• Supply voltage present at (see circuit diagram):
− Connecting cable
− Appliance plug
− Mains switch
− Electronics (A1), plug S100
• Look for the displayed error code in the chapter 5, pg. 12.
• Remedy the error according to the instructions.
• Carry out a functional check after every repair and whenever a component is
replaced, see pg. 75, chapter 8.

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5 Error messages
5.1 Perform a MAINS RESET
• Switch off the mains switch (switch position "0").
• Wait at least 10 seconds and then switch on the mains switch again (switch position
"Ι").
5.2 Brief description
Error designation No. Brief description Page
TACHO-ERROR 1 Speed sensor on top of the motor: Speedometer
pulses break down during rotation
15
TACHO-ERROR 2 After start command no speedometer pulses
from both speed sensors
16
IMBALANCE (3)* Imbalance on motor axle 17
CONTROL-ERROR 4.1 Lid lock error 17
CONTROL-ERROR 4.2 Lid lock error 18
CONTROL-ERROR 4.3 Lid lock error 18
CONTROL-ERROR 4.4 Lid lock error 18
CONTROL-ERROR 4.5 Lid lock error 19
N > MAX 5 Excessive speed error 19
CONTROL-ERROR 6 Lid lock error 20
ROTORCODE 10.1 No start code recognized 20
ROTORCODE 10.2 Invalid rotor code 20
ROTORCODE 10.3 Error during reading the rotor code 21
MAINS INTERRUPT (11)* Mains interruption. 21
VERSION ERROR 12 Incorrect machine type and/or cooling version 21
N < MIN 13 Speed error: slippage is too high 22
CONTROL-ERROR 22 Communication error I2C bus 22
CONTROL-ERROR 25.1 EEPROM read error 22
CONTROL-ERROR 25.2 EEPROM write error 23
CONTROL-ERROR 25.3 EEPROM communication error 23
CONTROL-ERROR 25.4 EEPROM storage error 22
* Error number will not be displayed

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Error designation No. Brief description Page
SER I/O-ERROR 31 TIME OUT, communication error with frequency
converter
23
SER I/O-ERROR 34 Communication error with frequency converter 23
SER I/O-ERROR 36 NAK, communication error with frequency
converter
23
°C / *-ERROR 51 Overtemperature on condenser 23
°C / *-ERROR 52 Overtemperature in centrifuge chamber 24
°C / *-ERROR 53 Temperature sensor at the bottom of the
centrifuge chamber is defective
24
°C / *-ERROR 54 Temperature sensor at the top of the centrifuge
chamber is defective (not existing in ROTINA
420 R)
25
°C / *-ERROR 55 Temperature sensor on condenser is defective 25
FU/CCI-ERROR 60 Faulty release signal to frequency converter
(drive-processor)
26
FU/CCI-ERROR 61.1 Undervolt, undervoltage frequency converter 26
FU/CCI-ERROR 61.2 Overvolt, overvoltage frequency converter 26
FU/CCI-ERROR 61.4 OverT FU, Übertemperatur frequency converter 27
FU/CCI-ERROR 61.5 OverT Mot, overtemperature in motor 27
FU/CCI-ERROR 61.9 OverI Peak, peak current error frequency
converter
27
FU/CCI-ERROR 61.13 Short cir, short circuit cut-off frequency converter 28
FU/CCI-ERROR 61.16 FU Enable, no enabling for frequency converter 28
FU/CCI-ERROR 61.17 Communication error with control-processor 28
FU/CCI-ERROR 61.18 frequency converter receives wrong direction of
rotation command
29
FU/CCI-ERROR 61.19 Overspeed, frequency converter recognizes
excess speed
29
FU/CCI-ERROR 61.20 Faulty speed measurement of the frequency
converter
29
FU/CCI-ERROR 61.128 Internal frequency converter error 30
FU/CCI-ERROR 61.129 System error of the frequency converter 30
FU/CCI-ERROR 61.130 Program memory of the frequency converter
defective
30
FU/CCI-ERROR 61.131 Reset by Watchdog of the frequency converter 30

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Error designation No. Brief description Page
SENSOR-ERROR 90 No mains synchronisation 30
SENSOR-ERROR 91 Imbalance sensor – error (x-axis) 31
SENSOR-ERROR 92 Imbalance sensor – error (y-axis) 31
SENSOR-ERROR 93 Imbalance sensor - error: temperature sensor of
the imbalance sensor defective
31
TACHO-ERROR 96 Speed sensor at the bottom of the motor:
Speedometer pulses break down during
centrifugation run
32
°C / *-ERROR 97 Temperature sensor on the Electronics defective 32
°C / *-ERROR 98 Temperature sensor on the Electronics detects
overtemperature
32
PROGRAMM-
ERROR
100 Ceck sum error with programs (Single programs) 33
MULTI PROG
ERROR
101 Ceck sum error with program linking (Multi
programs)
33
NO ROTOR OR
ROTORCODE
ERROR
--- No rotor installed or speed sensor on top of the
motor defective
33
N > ROTOR MAX --- Speed in the selected program greater than the
maximum speed of the rotor (Nmax).
34
FC INIT ERROR --- Initialisation of the frequency converter is faulty 34
FATAL EEPROM
ERROR 1 – 5
--- EEPROM error 34

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5.3 Description and elimination of errors
After occurrence of a fault the cooling / heating switches off. The standby
cooling takes place after the rotor is at standstill and the lid is closed.
During a fault the lid can be opened after the rotor is at standstill.
TACHO - ERROR 1 wait 3:00
During centrifugation the speedometer pulses of the speed sensor
(B4) on top of the motor are interrupted.
The rotor slows down braked until it stops.
No further user operation possible.
After the rotor is at standstill and the 3 minutes have elapsed the
lid lock will be released and the lid can be opened.
• Reset error code:
− Open the lid.
− Switch off the mains switch (switch position "0").
− Wait at least 10 seconds.
− Turn the rotor vigorously by hand.
− Switch on the mains switch again (switch position "Ι").
The rotor must turn during switch-on.
• Speed sensor (B4) on top of the motor defective or loose
contact on plug.
Check the function of the speed sensor (B4), see pg. 62,
chapter 6.17, item 6.
Measure supply voltage on plug S602 / Electronics (A1)
pin 2 – pin 3 (+14-18 VDC).
Measure speedometer pulses on plug S602 / Electronics (A1)
pin 2 - pin 4 (signal).
• Electronics (A1) is defective.

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TACHO - ERROR 2 wait 3:00
After start-up no speedometer pulses will be received from both
speed sensors.
The rotor slows down braked until it stops.
No further user operation possible.
After the rotor is at standstill and the 3 minutes have elapsed the lid
lock will be released and the lid can be opened.
• Reset error code:
− Open the lid.
− Switch off the mains switch (switch position "0").
− Wait at least 10 seconds.
− Turn the rotor vigorously by hand.
− Switch on the mains switch again (switch position "Ι").
The rotor must turn during switch-on.
• Motor is blocked or defective.
• Loose contact on motor plug S104.
• Both speed sensors (B4, B2.1) defective or loose contact on
plug.
− Check the function of the speed sensors, see pg. 62, chapter
6.17, item 6.
− Speed sensor (B4) on top of the motor:
Measure supply voltage on plug S602 / Electronics (A1)
pin 2 – pin 3 (+14-18 VDC).
Measure speedometer pulses on plug S602 / Electronics
(A1)
pin 2 - pin 4 (signal).
− Speed sensor (B2.1) at the bottom of the motor:
Measure supply voltage on plug S701 / Electronics (A1)
pin 6 – pin 8 (+14-18 VDC).
Measure speedometer pulses on plug S701 / Electronics
(A1)
pin 6 - pin 7 (signal).
• Electronics (A1) is defective.

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IMBALANCE
Imbalance on motor axle.
The rotor slows down braked until it stops.
• Reset error code:
Open the lid or perform a MAINS RESET.
• Weight difference in rotor components.
• The supporting lugs of the rotor are not lubricated.
• Check grounding of the motor.
A missing grounding of the motor causes disturbing signals
which can produce the error.
• Check the maximum permissible imbalance values, see pg. 59,
chapter 6.15.3.
• Imbalance sensor (B2.2) is defective.
Measure supply voltage on plug S701 / Electronics (A1)
pin 6 – pin 1 (+5 VDC).
Measure on Electronics (A1) / plug S701, pin 6 – pin 2 and
pin 6 – pin 3 (square wave signal 5 V /100 Hz).
• Electronics (A1) is defective.
CONTROL - ERROR 4.1
The lid switches for the left and/or right hook have opened during the
centrifugation run.
The rotor slows down without braking until it stops.
No further user operation possible except opening the lid.
• Reset error code:
After the rotor has stopped perform a MAINS RESET. If the left
LED in the button
STOP / OPEN
is blinking after turning the centrifuge
on again, press this button so that the motor-driven lid locking
once again assumes the normal position (opened).
• An emergency unlocking was performed during the centrifugation
run.
• Switches of the lid lock defective.
Check the function of both switches, see pg. 62, chapter 6.17,
item 21.
Pull out plug S703 and check the function of the switches at the
plug of the cable between pin 1 - pin 2 (left hook) and
pin 3 - pin 4 (right hook).
• Electronics (A1) is defective.

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CONTROL - ERROR 4.2
Error during testing the lid switches after the start command.
No further user operation possible except opening the lid.
• Reset error code:
Perform a MAINS RESET.
• Switches of the lid lock defective.
Check the function of both switches, see pg. 62, chapter 6.17,
item 21.
Pull out plug S703 and check the function of the switches at the
plug of the cable between pin 1 - pin 2 (left hook) and
pin 3 - pin 4 (right hook).
• Electronics (A1) is defective.
CONTROL - ERROR 4.3
Position switch "Mc" of the motor-driven lid lock opens during the
centrifugation run.
The rotor slows down braked until it stops.
No further user operation possible except opening the lid.
• Reset error code:
Perform a MAINS RESET.
• Position switch "Mc" defective.
Check the function of the switch, see pg. 62, chapter 6.17, item
21.
Pull out plug S703 and check the function of the switch at the
plug of the cable between pin 6 - pin 7 (position switch "Mc").
• Electronics (A1) is defective.
CONTROL - ERROR 4.4
The lid can not be locked by motor.
No further user operation possible.
• Reset error code:
Perform a MAINS RESET.
• After opening the lid one of the two lid switches (for the hooks)
remains closed.
• Switches of the lid lock defective.
Check the function of both switches, see pg. 62, chapter 6.17,
item 21.
Pull out plug S703 and check the function of the switches at the
plug of the cable between pin 1 - pin 2 (left hook) and
pin 3 - pin 4 (right hook).
• Electronics (A1) is defective.

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CONTROL - ERROR 4.5
Position switch "Mo" of the motor-driven lid lock closes during the
centrifugation run.
The rotor slows down braked until it stops.
No further user operation possible except opening the lid.
• Reset error code:
Perform a MAINS RESET.
• Position switch "Mo" defective.
Check the function of the switch, see pg. 62, chapter 6.17, item
21.
Pull out plug S703 and check the function of the switch at the
plug of the cable between pin 5 - pin 7 (position switch "Mo").
• Electronics (A1) is defective.
N > MAX 5
Excess speed. The speed measured by the speed sensors B4 or
B2.1 is 250 RPM higher than the maximum speed of the rotor.
The rotor slows down braked until it stops.
No further user operation possible except opening the lid.
• Reset error code:
Perform a MAINS RESET.
• Both speed sensors (B4, B2.1) defective or loose contact on
plug.
− Check the function of the speed sensors, see chapter "6.17,
item 6".
− Speed sensor (B4) on top of the motor:
Measure supply voltage on plug S602 / Electronics (A1)
pin 2 – pin 3 (+14-18 VDC).
Measure speedometer pulses on plug S602 / Electronics (A1)
pin 2 - pin 4 (signal).
− Speed sensor (B2.1) at the bottom of the motor:
Measure supply voltage on plug S701 / Electronics (A1)
pin 6 – pin 8 (+14-18 VDC).
Measure speedometer pulses on plug S701 / Electronics (A1)
pin 6 - pin 7 (signal).
• Electronics (A1) is defective.

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CONTROL - ERROR 6
Lid lock error.
No further user operation possible except opening the lid.
• Reset error code:
Perform a MAINS RESET.
• The motor of the lid lock runs too slowly or it is blocked. The
position switch "Mc" or "Mo" must close within 5 seconds.
• Position switch "Mc" or "Mo" defective.
Check the function of the switch "Mc" or "Mo", see pg. 62,
chapter 6.17, item 21.
Pull out plug S703 and check the function of the switch at the
plug of the cable between pin 6 - pin 7 (position switch "Mc") and
between pin 5 - pin 7 (position switch "Mo").
• Electronics (A1) is defective.
ROTORCODE 10.1
Start code of the rotor coding not recognized.
The rotor slows down braked until it stops.
No further user operation possible except opening the lid.
• Reset error code:
Perform a MAINS RESET.
• Magnetic code on the rotor is defective, see pg. 91, chapter 11.1.
• Electronics (A1) is defective.
ROTORCODE 10.2
An invalid rotor code was read in during start-up.
The rotor slows down braked until it stops.
No further user operation possible except opening the lid.
• Reset error code:
Perform a MAINS RESET.
• Magnetic code on the rotor is defective, see pg. 91, chapter
11.1.
• Motor turns in false direction. Check the motor cables on plug
S104 / Electronics (A1).
• Electronics (A1) is defective.