Hettich ROTINA 35 R Setup guide

09.05 Andreas Hettich GmbH & Co. KG AR026GB
Repair instructions
ROTINA 35 / 35 R

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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
© 1999 by Andreas Hettich GmbH & Co. KG
All rights reserved. No part of this publication may be reproduced without the written
prior permission of the copyright owner.
Modifications reserved!
AR026GB / 09.05

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Contents
1. Introduction ............................................................................................................7
2. Description of the new Hettich centrifuges .........................................................8
2.1 Functional structure of the ROTINA 35 / 35 R...................................................8
2.2 Control panel (CP) ............................................................................................8
2.3 Supply board (SB).............................................................................................9
2.4 Frequency converter (FC) .................................................................................9
2.5 Special features ..............................................................................................10
2.6 Motor / Tacho system...................................................................................... 10
2.7 Imbalance switch.............................................................................................11
2.8 Interlocking......................................................................................................11
2.9 Cooling............................................................................................................11
2.9.1 Temperature sensor B1, in the centrifuge chamber.................................11
2.9.2 Function of the cooling board (CB) A3 .....................................................11
2.10 Fan..................................................................................................................11
2.11 Offset calibration .............................................................................................12
2.12 Protection........................................................................................................12
3. Troubleshooting procedures .............................................................................. 13
4. Error messages ....................................................................................................14
4.1 Brief description ..............................................................................................14
4.2 Description and elimination of errors...............................................................16
5. Settings and interrogations................................................................................. 24
5.1 Control panel...................................................................................................24
5.2 Procedure for initialization...............................................................................24
5.3 Imbalance Mode..............................................................................................25
5.4 OFFSET alignment .........................................................................................25
5.4.1 OFFSET value .........................................................................................26
5.4.2 Procedure for performing an OFFSET alignment.....................................26
5.4.3 Note for temperature sensor in centrifuge chamber.................................26
5.5 Parameter interrogation ..................................................................................27
5.6 Acoustic signal ................................................................................................27
5.7 Hours of operation...........................................................................................27
5.8 Checking the motor slippage...........................................................................28

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5.9 Setting display contrast on control panel ........................................................ 28
5.10 Imbalance switch-off ....................................................................................... 29
6. Functional check after a repair........................................................................... 30
7. Assembling and disassembling components ................................................... 30
7.1 Speed sensor B3 (speedometer).................................................................... 33
7.2 Motor M1 / Vibration damper .......................................................................... 33
7.3 FC (frequency converter)................................................................................ 33
7.4 SB (supply board) ........................................................................................... 33
7.5 CB A3 (cooling board) only ROTINA 35 R...................................................... 33
7.6 CP A4 (control panel) ..................................................................................... 34
7.7 EPROM at CP................................................................................................. 34
7.8 CC (control cables) ......................................................................................... 34
7.9 LL (Y1) (lid locking)......................................................................................... 34
7.10 BR R1 (brake resistor) .................................................................................... 34
7.11 Radio interference suppression filter Z1 ......................................................... 34
7.12 Mains choke coil (L1)...................................................................................... 35
7.12.1 Assembly and disassembly ..................................................................... 35
7.12.2 Short the mains choke coil....................................................................... 35
7.13 Mains switch Q1 ............................................................................................. 35
7.14 Appliance plug B1, overvoltage protection F1................................................. 36
7.15 Imbalance switch ............................................................................................ 36
7.16 Fan M5 for the motor (only ROTINA 35 R) ..................................................... 36
7.17 Temperature sensor B1 in centrifuge chamber............................................... 36
7.18 Temperature sensor B2 at condenser ............................................................ 36
7.19 Fan M3 and M4............................................................................................... 36
7.20 Compressor (M2)............................................................................................ 37
7.21 Gas filled damper............................................................................................ 37
8. Speedometer-code-position of the rotors ......................................................... 38

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9. Circuit diagrams................................................................................................... 40
9.1 Mains supply with supply board (SB) 230 V....................................................40
9.2 Mains supply with supply board (SB) 115 V....................................................41
9.3 Circuit diagram supply board (SB) ..................................................................42
9.4 Connecting diagram and component layout supply board (SB) ......................43
9.5 Signals at control cable (between CP-SB) ......................................................44
9.6 Block diagram control panel (CP)....................................................................45
9.7 Connecting diagram Control board (CP) .........................................................46
9.8 Block diagram and control panel signals at FC ...............................................47
9.9 Connecting diagram frequency converter (FC) ...............................................48
9.10 Circuit diagram cooling board ......................................................................... 49
9.11 Connecting diagram and component layout cooling board .............................50
10. Technical specifications ..................................................................................51

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Abbreviations
CP Control panel
FC Frequency converter
SB Supply board
CB Cooling board
CC Control cable
LL Lid locking
BC Braking chopper
BR Brake resistor
MR Mains reset,
mains switch OFF - ON
EC Error cause
ES Error consequence
ER Error remedy
M Measurements
ECR Error-code reset

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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.

CP : control panel, FC : frequency converter, SB : supply board, CB : cooling board, CC : control cable, LL : lid locking, BC : braking chopper,
BR : brake resistor, MR : mains reset, EC : error cause, ES : error consequence, ER : error remedy, M : measurements, ECR : error-code reset
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2. Description of the new Hettich centrifuges
2.1 Functional structure of the ROTINA 35 / 35 R
These microprocessor-controlled centrifuges are comprised of the following electrical
components:
• Control panel (CP), microprocessor-controlled
• Supply board (SB)
• Frequency converter (FC, motor control), microprocessor-controlled
• Motor with speed sensor (speedometer)
• Braking chopper (BC) with brake resistor (BR)
• Lid locking (LL)
• Cooling board (CB), only Rotina 35 R
2.2 Control panel (CP)
The CP is the ”brain” or ”master” of the centrifuge.
Via a serial data bus system, the MASTER controls its SLAVE, the component:
− frequency converter (FC)
The individual tasks of the CP are:
• Management of operator inputs and control of LCD display.
• Storage of 3 run programs.
• Control of components:
− FC via the enabling circuit and via the serial interface.
− cooling and fan.
• Evaluation of the speed sensor (speedometer).
• Evaluation of the imbalance switch.
• Evaluation of the FC fault alarm circuit.
• Evaluation of the LL open/closed signalling circuit.
• Control of the relay for the LL solenoid at rotor standstill
• Temperature measurement and sensor evaluation of the temperature sensor in
centrifuge chamber (only refrigerated centrifuge).
• Routine for input, storage and transfer of temperature offset values.
• Format of the serial interface:
- 5 Volt interface with 3 conductors.
- (16-pole control cable, pole 6, 8 and 11).
• The CP is powered from the SB via the control cable:
+ 10...15 Volt pole 1,2
GND pole 15,16

CP : control panel, FC : frequency converter, SB : supply board, CB : cooling board, CC : control cable, LL : lid locking, BC : braking chopper,
BR : brake resistor, MR : mains reset, EC : error cause, ES : error consequence, ER : error remedy, M : measurements, ECR : error-code reset
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2.3 Supply board (SB)
The SB performs the following individual functions:
• 12 V DC and 5 V DC supply for the SB.
• 12 V DC supply for the CP.
• 12 V DC supply for the CB (only Rotina 35 R).
• Plugging station X5 for mains power supply, LL magnet and transmission of the
signalling circuit for LL-switch (open/closed over opto-coupler to the CP).
• Power supply for speed sensor (speedometer).
• Plugging station X4 for speed sensor cable an0d transmission to the CP and FC.
• Control of the relay for the LL solenoid at rotor standstill
• Plugging station X3 for the imbalance switch and direct transmission of the
imbalance signal to the CP.
• The 5 Volt interface with 3 conductors is converted to an RS 485 interface with 2
conductors:
- Interface to FC: RS 485-interface via 2 conductors.
• Transfer of primary enabling (=Hardware STOP) CP ⇒FC
• Transfer of fault circuit (FC-ERROR) FC ⇒CP
2.4 Frequency converter (FC)
The FC performs the following individual functions:
• Generation of the motor power supply.
(3-phase AC current of variable frequency and voltage)
Mode of operation: The mains supply is rectified, smoothed and chopped in three
bridge elements to give a pulse-duration modulated supply.
• Monitoring of the motor current.
• Evaluation of the overtemperature switch in the motor (only version 115V, AC).
• Slave behaviour (handling of interrogations and commands from the CP via the serial
interface):
RS 485-interface with 2 conductors
(10-pole control cable, pole 3 and 5).
• Evaluation of the primary enabling (Hardware STOP) for the FC
(10-pole control cable, pole 7).
• Evaluation of potential faults and monitoring of the fault circuit (FC-ERROR)
(10-pole control cable, pole 4).
• The electrical power, which resulted from braking, will be conducted to the BR. The
braking chopper switches at a voltage:
− from approximately 390V (230V series).
− from approximately 200V (115V series).
• The BR is protected by an overtemperature switch. At a short circuit on the BC, which
is located on the FC, the BR overheats because of high current. The
overtemperature switch cuts off the voltage supply from the FC. After cooling down at
the BR the voltage supply is switched on again.

CP : control panel, FC : frequency converter, SB : supply board, CB : cooling board, CC : control cable, LL : lid locking, BC : braking chopper,
BR : brake resistor, MR : mains reset, EC : error cause, ES : error consequence, ER : error remedy, M : measurements, ECR : error-code reset
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• The CP issues the following via the serial interface:
− Speed
− Starting and braking levels
− Control commands START, BRAKE, STOP
• State display by LED´s: In standby mode the green LED is on
In running mode the green LED is on
In fault mode the green LED flashes
If the FC processor detects a fault, it shuts down itself automatically and triggers the
fault circuit (FC-ERROR). The CP then interrogates the type of fault via the serial
interface.
2.5 Special features
• Multiprocessor concept:
Although one microprocessor will fail, the other one will continue to monitor its
assigned area.
If the CP fails, the drive will be shut down automatically by the FC when no inter-
rogations have been received via the interface for more than 30 seconds.
• Interface concept:
Transmission of data is monitored by an extra check sum.
• Hardware concept:
All switches with a safety relevant function are of the NC-contact type, which
means that loose contacts and open-circuit faults can also be detected.
2.6 Motor / Tacho system
• The motor is a 3 phase asynchronous motor with 2 pairs of poles.
• A speed sensor (speedometer) attached to the motor receives the following from the
transmitter attached to the rotor,
− rotor code information (see section "8") and
− speed data (6 pulses per revolution)
• The ACTUAL speed is monitored and controlled via the CP
− Double safety: The FC is also programmed that no value of speed
in excess of the maximum permitted rotor speed
can be selected. The FC monitors the speed and
switches off at excess speed with error code
“ERROR 84”.
• Rotor standstill is monitored via the CP.
− The lid can only be opened when the CP has detected standstill.

CP : control panel, FC : frequency converter, SB : supply board, CB : cooling board, CC : control cable, LL : lid locking, BC : braking chopper,
BR : brake resistor, MR : mains reset, EC : error cause, ES : error consequence, ER : error remedy, M : measurements, ECR : error-code reset
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2.7 Imbalance switch
• A switch detects any imbalance.
• Imbalance can only be detected in running mode (starting, centrifuging and braking).
• If any imbalance is detected, the drive is changed over to braking.
2.8 Interlocking
• Opening of the LL is prevented by a latch. The LL can only be opened when the relay
on the SB is energized by the CP. This occurs when the rotor is at standstill and
mains power is applied. A solenoid is energized and releases the latch.
• The centrifuge can only be started when the lid is closed. A microswitch on the LL
detects the position of the LL.
2.9 Cooling
• Temperature behaviour:
− When rotor is at standstill and the lid is locked, the cooling is operating.
− When rotor is at standstill and the lid is unlocked, there is no cooling.
2.9.1 Temperature sensor B1, in the centrifuge chamber
• This temperature is processed in the CP.
• The housing of the temperature sensor B1 also contains an overtemperature switch.
In refrigerated centrifuges this switch cuts off the drive at > 60°C.
2.9.2 Function of the cooling board (CB) A3
• Plugging station (X3) for the temperature sensor and the overtemperature switch in
the centrifuge chamber.
• The voltage of the temperature sensor in the centrifuge chamber plug X4 being
transmitted over a 10-pole CC to the CP plug X101.
• The signal of the overtemperature switch in the centrifuge chamber plug X4 being
onward transmitted over a 10-pole CC to the CP plug X101.
• Plugging station (X2) for the overheating protection B2 at the condenser.
• Relay circuit for the compressor and the fan. The overheating protection B2 at the
condenser is series connected to the relay voltage.
• Plugging station (X1) for the compressor and the fan.
2.10 Fan
• The fans cool down the refrigerant flowing through the condenser.
• The fans are parallel-connected to the compressor.

CP : control panel, FC : frequency converter, SB : supply board, CB : cooling board, CC : control cable, LL : lid locking, BC : braking chopper,
BR : brake resistor, MR : mains reset, EC : error cause, ES : error consequence, ER : error remedy, M : measurements, ECR : error-code reset
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2.11 Offset calibration
• Offset calibration is performed in order to equalize the tolerances of the temperature
sensor and the electronics.
Perform Offset calibration
when replacing:
Where/How
− the temperature sensor calibrate the temperature sensor.
− the CP calibrate temperature sensor and read out the old
offset values and put them in the new CP.
− the CP-EPROM Read out the old offset values and put them in the
new CP.
2.12 Protection
Mains power input ⇒Mains input with overvoltage protection
Mains switch ⇒Thermal overload protection (fuse)
FC ⇒Electronic protection
Motor ⇒Overtemperature cutout > 135°C (only 115 V
version).
Cooling ⇒Overtemperature switch in centrifuge chamber and
at condenser.

CP : control panel, FC : frequency converter, SB : supply board, CB : cooling board, CC : control cable, LL : lid locking, BC : braking chopper,
BR : brake resistor, MR : mains reset, EC : error cause, ES : error consequence, ER : error remedy, M : measurements, ECR : error-code reset
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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 (F1)
− Mains switch (Q1)
− Supply board, plug X5 (PIN 1, PIN 5).
• 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".

CP : control panel, FC : frequency converter, SB : supply board, CB : cooling board, CC : control cable, LL : lid locking, BC : braking chopper,
BR : brake resistor, MR : mains reset, EC : error cause, ES : error consequence, ER : error remedy, M : measurements, ECR : error-code reset
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4. Error messages
4.1 Brief description
• Error messages in: ROTINA 35
ROTINA 35 R
Error designation No. Brief description Page
TACHO-ERROR 01 Speedometer pulses break down during rotation 16
TACHO-ERROR 02 No speedometer pulses after start command 16
IMBALANCE Imbalance on motor axle 17
CONTROL-ERROR 04 LL error, lid opened without recognizing that
motor had stopped
17
N > MAX 05 Excessive speed error, 250 RPM above n-max of
rotor
17
ROTORCODE 10 Invalid rotor code 18
MAINS INTERRUPT Mains interruption 18
VERSION-ERROR 12 Error in initialization 18
N < MIN 13 Speed error, slippage is too great 19
CONTROL-ERROR 21 CP - error: speed 19
CONTROL-ERROR 22 CP - error: I²C bus 19
CONTROL-ERROR 23 CP - error: display memory 19
CONTROL-ERROR 24 CP - error: clock timeout 19
CONTROL-ERROR 25 CP - error: EEPROM 19
CONTROL-ERROR 26 CP - error: driver defective 19
N > ROTOR MAX --- CP - error: nominal speed is higher
than permitted rotor speed
or nominal RCF is higher
than permitted rotor RCF
19
SER I/O-ERROR 30 No connection between CP and serial interface 19
SER I/O-ERROR 31 No connection between FC and serial interface 19
SER I/O-ERROR 33 Subassembly data incorrectly transmitted 20
SER I/O-ERROR 34 Data incorrectly transmitted between CP and FC 20
SER I/O-ERROR 36 No acknowledgement (NAK) from FC to CP 20

CP : control panel, FC : frequency converter, SB : supply board, CB : cooling board, CC : control cable, LL : lid locking, BC : braking chopper,
BR : brake resistor, MR : mains reset, EC : error cause, ES : error consequence, ER : error remedy, M : measurements, ECR : error-code reset
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Error designation No. Brief description Page
No cooling
(No error displayed)
Overtemperature at condenser 20
°C / *-ERROR 52 Overtemperature in centrifuge chamber 21
°C / *-ERROR 53 Temperature sensor in centrifuge chamber is
defective
21
FU/CCI-ERROR 60 Faulty release signal to FC 21
FU/CCI-ERROR 61 FC - error: computing section 22
FU/CCI-ERROR 62 FC - error: undervoltage 22
FU/CCI-ERROR 63 FC - error: overcurrent 22
FU/CCI-ERROR 64 FC - error: overvoltage 22
FU/CCI-ERROR 67 FC - error: overtemperature in motor
(only 115V)
23
FU/CCI-ERROR 68 FC - error: overtemperature in FC 23
FU/CCI-ERROR 69 FC - error: EEPROM 23
FU/CCI-ERROR 84 FC - error: FC recognizes excess speed 23
FU/CCI-ERROR 85 FC - error: “Watchdog” in FC had
triggered
23

CP : control panel, FC : frequency converter, SB : supply board, CB : cooling board, CC : control cable, LL : lid locking, BC : braking chopper,
BR : brake resistor, MR : mains reset, EC : error cause, ES : error consequence, ER : error remedy, M : measurements, ECR : error-code reset
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4.2 Description and elimination of errors
TACHO - ERROR 01
EC During centrifugation the speedometer pulses are interrupted.
ES The rotor slows down until it stops.
After the rotor stops, there is a DC braking for 30 sec.
An MR during slowing-down causes a DC braking for 3 min.
After the DC braking, the ”open the lid” release takes place.
Further cooling to NOMINAL temperature.
ER • Speed sensor (speedometer) defective or loose contact on plug.
Measure speedometer pulses on plug X4 / SB (pin 4 - pin 2).
• CC to CP, or CC to FC is defective.
• SB or CP or FC is defective.
M Also see at SB-X4 and CP-X1 (PIN 14) and FC S501 (PIN 8)
ECR Open the lid. Turn the rotor by hand and perform an MR while the rotor
is turning.
TACHO - ERROR 02
EC There are no speedometer pulses on the CP after startup.
ES The rotor slows down until it stops.
After the rotor stops, there is a DC braking for 30 sec.
An MR during slowing-down causes a DC braking for 3 min.
After the DC braking, the ”open the lid” release takes place.
Further cooling to NOMINAL temperature.
ER • Startup took place without the rotor.
• Motor not connected.
• Motor is defective.
• Speed sensor (speedometer) defective, or loose contact on plug.
Measure speedometer pulses on plug X4 / SB (pin 4 - pin 2).
• CC to CP, or CC to FC is defective.
• No release signal to FC.
• SB or CP or FC is defective.
M Also see at SB-X4 and CP-X1 (PIN 14) and FC S501 (PIN 8)
ECR Open the lid. Turn the rotor by hand and perform an MR while the rotor
is turning.

CP : control panel, FC : frequency converter, SB : supply board, CB : cooling board, CC : control cable, LL : lid locking, BC : braking chopper,
BR : brake resistor, MR : mains reset, EC : error cause, ES : error consequence, ER : error remedy, M : measurements, ECR : error-code reset
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IMBALANCE
EC Imbalance on motor axle.
ES The centrifuge slows down until the “open the lid” release occurs.
Further cooling until NOMINAL temperature is reached.
ER • Weight difference in rotor components.
• Supporting lugs not lubricated.
• False IMBALANCE MODE is set (see chapter "Imbalance Mode").
• Imbalance switch not connencted.
• Imbalance switch is defective.
• Loose contact in cable or plug.
• CC to CP is defective.
• CP or SB is defective.
M Also see at SB-X3 and CP-X1 (PIN 12)
ECR Perform an MR.
CONTROL - ERROR 04
EC LL is open during centrifugation.
ES Slowing down until the ”open the lid” release occurs.
Further cooling until NOMINAL temperature is reached.
ER • LL is defective and can be opened during centrifugation.
• Loose contact in cable or in plug.
• CC to CP is defective.
• CP or SB is defective.
M Also see at SB-X5 (PIN 2 and PIN 6) and CP-X1 (PIN 5)
ECR Perform an MR.
N > MAX 05
EC Excess speed. The speed recognized by the speed sensor
(speedometer) is 250 RPM greater than the n-max speed of the rotor.
ES The centrifuge slows down until the ”open the lid” release occurs.
Further cooling until NOMINAL temperature is reached.
ER • Insulation of speed sensor (speedometer) cable is defective.
• Loose contact on speed sensor (speedometer) cable.
• Speed sensor (speedometer) is defective.
• CC to CP is defective.
• CP or FC or SB is defective.
ECR Perform an MR.

CP : control panel, FC : frequency converter, SB : supply board, CB : cooling board, CC : control cable, LL : lid locking, BC : braking chopper,
BR : brake resistor, MR : mains reset, EC : error cause, ES : error consequence, ER : error remedy, M : measurements, ECR : error-code reset
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ROTORCODE 10
EC An invalid rotor code was read during startup.
ES The centrifuge slows down until the ”open the lid” release occurs.
Further cooling until NOMINAL temperature is reached.
ER • Magnetic coding on rotor is defective.
• Speedometer system is defective.
• Loose contact on speed sensor (speedometer) plug
• The rotation of the rotor (direction) is incorrect.
M Also see section 10.
ECR Open the lid or perform an MR.
MAINS INTERRUPT
EC Interruption of mains supply during centrifugation.
ES The centrifuge slows down until the ”open the lid” release occurs.
− Switching on at the mains during centrifugation causes
slowing-down until the ”open the lid” release occurs.
− Switching on at the mains when the rotor has stopped brings
about the ”open the lid” release.
ER • Power supply has failed.
• Loose contact in electrical connections.
• CC to CP is defective.
ECR Open the lid and press the . key.
This error cannot be reset by an MR
VERSION - ERROR 12
EC Differences in the initialization from CP (EPROM) or FC.
ES No further user operation is possible.
ER • An incorrect EPROM has been plugged into CP.
M Also see initialization section 5.2
ECR Perform an MR.

CP : control panel, FC : frequency converter, SB : supply board, CB : cooling board, CC : control cable, LL : lid locking, BC : braking chopper,
BR : brake resistor, MR : mains reset, EC : error cause, ES : error consequence, ER : error remedy, M : measurements, ECR : error-code reset
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N < MIN 13
EC Insufficient speed; the slippage of the motor is too great.
The centrifuge regulation can adjust the speed by 5% max (the limit of
adjustment).
The error is indicated if the ACTUAL speed is lower than the
NOMINAL speed minus 5%.
ES The centrifuge slows down until the ”open the lid” release occurs.
Further cooling until NOMINAL temperature is reached
ER • Motor is labouring (damage to bearings).
• Motor has a short-circuited coil (coil is defective).
• Loose contact in the electrical connections.
• FC is defective.
Release signal to FC was interrupted during centrifugation.
ECR Open the LL. Perform an MR.
CONTROL - ERROR 21 - 26
EC Internal error in CP.
ES The centrifuge slows down until the ”open the lid” release occurs.
ER • CP is defective.
ECR Perform an MR.
N > ROTOR MAX
EC Error in the entered program
ES Further operation is not possible.
ER SET speed or SET RCF is higher than the permissible rotor speed or
permissible rotor RCF.
ECR Open the lid.
Reduce the speed or RCF in the entered program to the permissible
rotor speed or permissible rotor RCF.
SER I/O - ERROR 30 and ERROR 31
EC CP has no connection to the component FC via serial interface.
ES The centrifuge slows down until the ”open the lid” release occurs.
ER • CC to FC is defective.
• There is no voltage on FC.
• F2 overtemperature switch on brake resistor has opened or is not
connected.
• CP or FC is defective.
• Cable on plug S102 is not or wrong plugged
ECR Perform an MR.

CP : control panel, FC : frequency converter, SB : supply board, CB : cooling board, CC : control cable, LL : lid locking, BC : braking chopper,
BR : brake resistor, MR : mains reset, EC : error cause, ES : error consequence, ER : error remedy, M : measurements, ECR : error-code reset
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SER I/O - ERROR 33
EC CP is not receiving correct data from FC.
ES The centrifuge slows down until the ”open the lid” release occurs.
ER • CC to FC is defective.
• CP or FC is defective.
ECR Perform an MR.
SER I/O - ERROR 34
EC CP is not receiving correct data from FC.
ES The centrifuge slows down until the ”open the lid” release occurs.
Further cooling until NOMINAL temperature is reached.
ER • CC to FC is defective.
• CP or FC is defective.
ECR Perform an MR.
SER I/O - ERROR 36
EC FC sends signal NAK to the CP after receiving an unknown command.
NAK (not acknowledged).
ES The centrifuge slows down until the ”open the lid” release occurs.
Further cooling until NOMINAL temperature is reached.
ER • CC to FC is defective.
• FC is defective.
• CP is defective.
ECR Perform an MR.
°C / * - NO COOLING
EC No cooling in centrifuge chamber. Overtemperature at condenser,
temperature > 60°C.
ES Cooling switches off.
Continuance of centrifugation until temperature switch in the centrifuge
chamber triggers and “ERROR 52” appears.
The centrifuge slows down until the “open the lid” release occurs.
ER • Condenser soiled.
• Loose contact in plug.
• SB is defective.
• Fan is defective.
• Sensor cable B2 is defective.
M Also see at CB-X2
ECR Perform an MR.