Pfeiffer Vacuum TC1200 User manual

OPERATING INSTRUCTIONS
EN
Translation of the Original
TC 1200
Electronic drive unit

Dear Customer,
Thank you for choosing a Pfeiffer Vacuum product. Your new turbopump is designed to
support you by its performance, its perfect operation and without interfering your individual
application. The name Pfeiffer Vacuum stands for high-quality vacuum technology, a
comprehensive and complete range of top-quality products and first-class service. With this
expertise, we have acquired a multitude of skills contributing to an efficient and secure
implementation of our product.
Knowing that our product must not interfere with your actual work, we are convinced that our
product offers you the solution that supports you in the effective and trouble-free execution of
your individual application.
Please read these operating instructions before putting your product into operation for the
first time. If you have any questions or suggestions, please feel free to contact info@pfeiffer-
vacuum.de.
Further operating instructions from Pfeiffer Vacuum can be found in the Download Center on
our website.
Disclaimer of liability
These operating instructions describe all models and variants of your product. Note that your
product may not be equipped with all features described in this document. Pfeiffer Vacuum
constantly adapts its products to the latest state of the art without prior notice. Please take
into account that online operating instructions can deviate from the printed operating
instructions supplied with your product.
Furthermore, Pfeiffer Vacuum assumes no responsibility or liability for damage resulting from
the use of the product that contradicts its proper use or is explicitly defined as foreseeable
misuse.
Copyright
This document is the intellectual property of Pfeiffer Vacuum and all contents of this
document are protected by copyright. They may not be copied, altered, reproduced or
published without the prior written permission of Pfeiffer Vacuum.
We reserve the right to make changes to the technical data and information in this document.
2/52

Table of contents
1 About this manual 7
1.1 Validity 7
1.2 Applicable documents 7
1.3 Target group 7
1.4 Conventions 7
1.4.1 Instructions in the text 7
1.4.2 Pictographs 7
1.4.3 Stickers on the product 8
1.4.4 Abbreviations 8
2 Safety 9
2.1 General safety instructions 9
2.2 Safety instructions 9
2.3 Safety precautions 10
2.4 Limits of use of the product 11
2.5 Proper use 11
2.6 Foreseeable misuse 12
3 Product description 13
3.1 Identifying the product 13
3.2 Product features 13
3.3 Function 13
3.4 Scope of delivery 13
3.5 Connections 14
4 Installation 15
4.1 Connection diagram 15
4.2 "remote" connection 17
4.3 Connection "RS-485" 18
4.4 Mains power supply 18
5 Interfaces 20
5.1 Interface RS-485 20
5.2 Pfeiffer Vacuum protocol for RS-485 interface 21
5.2.1 Telegram frame 21
5.2.2 Telegram description 21
5.2.3 Telegram example 1 22
5.2.4 Telegram example 2 22
5.2.5 Data types 22
6 Parameter set 24
6.1 General 24
6.2 Control commands 24
6.3 Status requests 27
6.4 Set value settings 28
6.5 Additional parameter for the DCU 29
7 Operation 31
7.1 Configuring the connections with the Pfeiffer Vacuum parameter set 31
7.1.1 Configuring the "remote" connection 31
7.1.2 Configuring the accessory connections 32
7.1.3 Select interfaces 33
7.2 Operating modes 33
7.2.1 Gas type-dependent operation 33
7.2.2 Set value power consumption 34
7.2.3 Run-up time 34
7.2.4 Rotation speed switch points 34
Table of contents
3/52

7.2.5 Rotation speed setting mode 36
7.2.6 Standby 36
7.2.7 Confirming the speed specification 36
7.2.8 Backing pump operating modes 37
7.2.9 Backing pump standby mode 38
7.2.10Operation with accessories 38
7.2.11Venting modes 39
7.3 Operation via "remote" connection 39
7.3.1 +24 V DC output/pin 1 39
7.3.2 Inputs 39
7.3.3 Outputs 41
7.3.4 Relay contacts (invertible) 41
7.3.5 RS-485 42
7.4 Switching on the turbopump 42
7.5 Switching off the turbopump 42
7.6 Operation monitoring 43
7.6.1 Operating mode display via LED 43
7.6.2 Temperature monitoring 43
8 Malfunctions 44
8.1 General 44
8.2 Error codes 44
8.3 Warning and error messages when operating with DCU 47
9 Service solutions from Pfeiffer Vacuum 48
Declaration of conformity 50
Table of contents
4/52

List of tables
Tbl. 1: Stickers on the product 8
Tbl. 2: Abbreviations used in this document 8
Tbl. 3: Permissible ambient conditions 11
Tbl. 4: Features of the device variant 13
Tbl. 5: Drive power depending on the supplied mains voltage 13
Tbl. 6: Connection description of the electronic drive unit 14
Tbl. 7: Terminal lay-out of 26-pin "remote" connection 17
Tbl. 8: Terminal layout of the RS-485 connecting socket M12 18
Tbl. 9: Terminal lay-out of the power supply connector 19
Tbl. 10: Features of the RS-485 interface 20
Tbl. 11: Terminal layout of the RS-485 connecting socket M12 20
Tbl. 12: Explanation and meaning of the parameters 24
Tbl. 13: Control commands 27
Tbl. 14: Status requests 28
Tbl. 15: Set value settings 29
Tbl. 16: Parameter for DCU functions 30
Tbl. 17: Digital outputs and relays 31
Tbl. 18: Digital inputs 32
Tbl. 19: Analog output 32
Tbl. 20: Analog input 32
Tbl. 21: Accessory connections 33
Tbl. 22: Parameter [P:060] 33
Tbl. 23: Characteristic nominal rotation speeds of the turbopumps 37
Tbl. 24: Backing pump operating modes 37
Tbl. 25: DI1 (release venting) / Pin 2 39
Tbl. 26: DI motor pump/pin 3 40
Tbl. 27: DI pumping station / Pin 4 40
Tbl. 28: DI standby/pin 5 40
Tbl. 29: DI2 (heater)/pin 6 40
Tbl. 30: DI3 (sealing gas)/pin 10 40
Tbl. 31: DI malfunction acknowledgment/pin 13 40
Tbl. 32: DI remote priority/pin 14 41
Tbl. 33: RS-485 interface, features 42
Tbl. 34: Behavior and meaning of the LEDs on the electronic drive unit 43
Tbl. 35: Error messages of the electronic drive unit 46
Tbl. 36: Warning messages of the electronic drive unit 47
Tbl. 37: Warning and error messages when using a DCU 47
List of tables
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List of figures
Fig. 1: TC 1200 connection panel 13
Fig. 2: Diagram and assignments of the connection panel 16
Fig. 3: Connecting RS-485 devices 18
Fig. 4: Networking of several electronic drive units in RS-485 Bus 21
Fig. 5: Schematic diagram of power characteristics, example of heavy gases
[P:027] = 0
34
Fig. 6: Rotation speed switch point 1 active 35
Fig. 7: Rotation speed switch points 1 & 2 active, [P:701] > [P:719] 35
Fig. 8: Rotation speed switch points 1 & 2 active, [P:701] < [P:719] 35
Fig. 9: Speed actuator operation 41
List of figures
6/52

1 About this manual
IMPORTANT
Read carefully before use.
Keep the manual for future consultation.
1.1 Validity
These operating instructions are for customers of Pfeiffer Vacuum. They describe the function of the
designated product and provide the most important information for safe usage of the product. The de-
scriptions comply with applicable directives. All information provided in these operating instructions refer
to the current development status of the product. The documentation remains valid as long as the cus-
tomer does not modify the product in any way.
1.2 Applicable documents
TC 1200 Operating instructions
Declaration of conformity A component of these instructions
You can find this document in the Pfeiffer Vacuum Download Center.
1.3 Target group
These operating instructions are aimed at all persons performing the following activities on the product:
●Transportation
●Setup (Installation)
●Usage and operation
●Decommissioning
●Maintenance and cleaning
●Storage or disposal
The work described in this document is only permitted to be performed by persons with the appropriate
technical qualifications (expert personnel) or who have received the relevant training from Pfeiffer Vac-
uum.
1.4 Conventions
1.4.1 Instructions in the text
Usage instructions in the document follow a general structure that is complete in itself. The required ac-
tion is indicated by an individual step or multi-part action steps.
Individual action step
A horizontal, solid triangle indicates the only step in an action.
►This is an individual action step.
Sequence of multi-part action steps
The numerical list indicates an action with multiple necessary steps.
1. Step 1
2. Step 2
3. ...
1.4.2 Pictographs
Pictographs used in the document indicate useful information.
About this manual
7/52

Note
Tip
1.4.3 Stickers on the product
This section describes all the stickers on the product along with their meaning.
Mod: TC 1200
Mod.-Nr.: PM C 01 810
Input: ~ 100-120V / ~200-240V±10%
10A, 50 - 60 Hz, 1500AIC
Output: 0 - 400V 5A, 0 - 630 Hz
Masse: 3kg
Made in Germany 2017/10
Ser.-Nr.:1234567
Rating plate
The rating plate is located on the side of the
electronic drive unit.
warranty seal
Closure seal
The product is sealed ex-factory. Damaging
or removing a closure seal results in loss of
the warranty.
Tbl. 1: Stickers on the product
1.4.4 Abbreviations
Abbreviation Meaning in this document
AI / AO Analog Input / Analog Output
AIC Ampere interrupting capacity
DCU Display Control Unit (Pfeiffer Vacuum display and control unit)
DI / DO Digital Input / Digital Output
fRotation speed value of a vacuum pump (frequency, in rpm or Hz)
HPU Handheld Programming Unit. Aid for control and monitoring pump parameters
IElectric amperage
LED Light emitting diode
[P:xxx] Electronic drive unit control parameters. Printed in bold as a three-digit number in
square brackets. Frequently displayed in conjunction with a short description
Example: [P:312] software version
PElectrical power
PE Earthed conductor (protective earth)
RElectrical resistance
RS-485 Standard for a physical interface for asynchronous serial data transmission (Recom-
mended Standard)
tTime
TC Electronic drive unit (turbo controller)
TMS Temperature management system
UElectric voltage
Tbl. 2: Abbreviations used in this document
About this manual
8/52

2 Safety
2.1 General safety instructions
This document includes the following 4 risk levels and 1 information level.
DANGER
Imminent danger
Indicates a hazardous situation which, if not avoided, will result in death or serious injury.
►Instructions on avoiding the hazardous situation
WARNING
Possibly imminent danger
Indicates a hazardous situation which, if not avoided, could result in death or serious injury.
►Instructions on avoiding the hazardous situation
CAUTION
Possibly imminent danger
Indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.
►Instructions on avoiding the hazardous situation
NOTICE
Danger of property damage
Notice is used to address practices not related to physical injury.
►Instructions on avoiding property damage
Notes, tips or examples indicate important information on the product or on this document.
2.2 Safety instructions
All safety instructions in this document are based on the results of the risk assessment carried out in
accordance with Low Voltage Directive 2014/35/EU. Where applicable, all life cycle phases of the prod-
uct were taken into account.
Risks during installation
DANGER
Danger to life from electric shock
When establishing the voltages that exceed the specified safety extra-low voltage (according to IEC
60449 and VDE 0100), the insulating measures will be destroyed. There is a danger to life from elec-
tric shock at the communication interfaces.
►Connect only suitable devices to the bus system.
Safety
9/52

DANGER
Danger to life from electric shock
Power supply packs that are not specified or are not approved will lead to severe injury to death.
►Make sure that the power supply pack meets the requirements for double isolation between
mains input voltage and output voltage, in accordance with IEC 61010 and IEC 60950.
►Make sure that the power supply pack meets the requirements in accordance with IEC 61010
and IEC 60950.
►Where possible, use original power supply packs or only power supply packs that correspond
with the applicable safety regulations.
WARNING
Danger to life from electric shock in the event of a fault
In the event of a fault, devices connected to the mains may be live. There is a danger to life from
electric shock when making contact with live components.
►Always keep the mains connection freely accessible so you can disconnect it at any time.
WARNING
Risk of danger to life through missing mains disconnection device
The vacuum pump and electronic drive unit are not equipped with a mains disconnection device
(mains switch).
►Install a mains disconnection device according to SEMI-S2.
►Install a circuit breaker with an interruption rating of at least 10,000 A.
WARNING
Risk of injury due to incorrect installation
Dangerous situations may arise from unsafe or incorrect installation.
►Do not carry out your own conversions or modifications on the unit.
►Ensure the integration into an Emergency Off safety circuit.
Risks in the event of malfunctions
WARNING
Risk of injury from parts moving after a power failure or troubleshooting
The "pumping station" function of the electronic drive unit will remain active after a power failure or if
errors occur that shut down the vacuum pump or the system. When power is restored or after ac-
knowledging a fault, the vacuum pump runs up automatically. There is a risk of injury to fingers and
hands if they enter the operating range of rotating parts.
►Always keep the mains connection freely accessible so you can disconnect it at any time.
►Remove present mating plugs or bridges from the electronic drive unit possibly before the mains
power returns, as these can cause an automatic run-up.
►Switch the pump off using the "Pumping station" function (parameter [P:010]).
2.3 Safety precautions
Duty to provide information on potential dangers
The product holder or user is obliged to make all operating personnel aware of dangers
posed by this product.
Every person who is involved in the installation, operation or maintenance of the product
must read, understand and adhere to the safety-related parts of this document.
Safety
10/52

Infringement of conformity due to modifications to the product
The Declaration of Conformity from the manufacturer is no longer valid if the operator
changes the original product or installs additional equipment.
●Following the installation into a system, the operator is required to check and re-evalu-
ate the conformity of the overall system in the context of the relevant European Direc-
tives, before commissioning that system.
General safety precautions when handling the product
►Before performing all work on the product, disconnect all installations connected to it safely from
the mains voltage.
►Observe all applicable safety and accident prevention regulations.
►Check that all safety measures are observed at regular intervals.
►Recommendation: Establish a secure connection to the earthed conductor (PE); protection class I.
►Never disconnect plug connections during operation.
►Keep lines and cables away from hot surfaces (> 70 °C).
►Do not carry out your own conversions or modifications on the unit.
►Observe the unit protection class prior to installation or operation in other environments.
►Observe the protection class specified by ensuring the correct seating of the present sealing
plugs.
►Disconnect the electronic drive unit only once everything has come to a complete standstill and
when the mains power supply of the Turbopump is interrupted.
2.4 Limits of use of the product
Installation location weatherproof (internal space)
Air pressure 750 hPa to 1060 hPa
Installation altitude max. 2000 m
Rel. air humidity max. 80%, at T < 31°C,
up to max. 50% at T < 40°C
Protection class I
Excess voltage category II
Permissible protection class IP54
Degree of contamination 2
Ambient temperature +5 °C to +40 °C
Tbl. 3: Permissible ambient conditions
Notes on ambient conditions
The specified permissible ambient temperatures apply to operation of the turbopump at
maximum permissible backing pressure or at maximum gas throughput, depending on the
cooling type. The turbopump is intrinsically safe thanks to redundant temperature monitor-
ing.
●The reduction in backing pressure or gas throughput permits operation of the turbo-
pump at higher ambient temperatures.
●If the maximum permissible operating temperature of the turbopump is exceeded, the
electronic drive unit first reduces the drive output and then switches it off where neces-
sary.
2.5 Proper use
●The electronic drive unit is used exclusively for the operation of Pfeiffer Vacuum turbopumps and
their accessories.
Safety
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2.6 Foreseeable misuse
Improper use of the product invalidates all warranty and liability claims. Any use that is counter to the
purpose of the product, whether intentional or unintentional, is regarded as misuse, in particular:
●Connection to the current supply that do not comply with the provisions of IEC 61010 or
IEC 60950
●Operation with excessively high radiated heat output
●Use in areas with ionizing radiation
●Operation in explosion-hazard areas
●Use of accessories or spare parts that are not listed in these instructions
Safety
12/52

3 Product description
3.1 Identifying the product
►To ensure clear identification of the product when communicating with Pfeiffer Vacuum, always
keep all of the information on the rating plate to hand.
►Learn about certifications through test seals on the product or at www.certipedia.com with compa-
ny ID no. 000021320.
3.2 Product features
The type TC 1200 electronic drive unit is a permanent component of the turbopump. The purpose of the
electronic drive unit is to drive, monitor and control the entire turbopump.
Feature TC 1200
Connection panel Standard (RS-485)
Turbopump HiPace 1200, 1500, 1800, 2300, 2800
Mains power supply 100 to 120 / 200 to 240 V AC (± 10 %) 50/60 Hz
Current draw max. 10 A
Max. power consumption 1350 VA
Internal fuse (mains connection) 10 A, slow blow
Interruption rating (AIC) 1500 A
Tbl. 4: Features of the device variant
Mains voltage ± 10% Output of the electronic drive unit
100 to 120 V AC 700 to 930 W
200 to 240 V AC 1200 W
Tbl. 5: Drive power depending on the supplied mains voltage
3.3 Function
1 2
5
6
3 4
}
Fig. 1: TC 1200 connection panel
1 Connection "accessory A+B" 4 Mains connection "AC in"
2 Service connection "PV.can" 5 "remote" connection
3 Connection "RS485" 6 LEDs Operating mode display
3.4 Scope of delivery
●TC 1200
●Operating instructions
Product description
13/52

3.5 Connections
Connection Description
1
2 3
PE
AC in
Housing plug HAN 3A for the voltage supply
accessory1)
M12 socket with screw lock for the connection of Pfeiffer Vacuum accessories. The
use of a Y-distributor permits the double allocation of a connection.
PV.can
M12 bushing with threaded coupling and LED for Pfeiffer Vacuum service purpos-
es.
remote
High-density sub-D bushing with 26 pins for connection and configuration of a re-
mote control.
RS-485
M12 socket with screw lock for the connection of Pfeiffer Vacuum control panels or
PC. The use of a Y-distributor permits the integration into a bus system.
Tbl. 6: Connection description of the electronic drive unit
1) The "accessory" connection is described in the operating instructions of the Turbopump.
Product description
14/52

4 Installation
4.1 Connection diagram
DANGER
Danger to life from electric shock
Power supply packs that are not specified or are not approved will lead to severe injury to death.
►Make sure that the power supply pack meets the requirements for double isolation between
mains input voltage and output voltage, in accordance with IEC 61010 and IEC 60950.
►Make sure that the power supply pack meets the requirements in accordance with IEC 61010
and IEC 60950.
►Where possible, use original power supply packs or only power supply packs that correspond
with the applicable safety regulations.
DANGER
Danger to life from electric shock
When establishing the voltages that exceed the specified safety extra-low voltage (according to IEC
60449 and VDE 0100), the insulating measures will be destroyed. There is a danger to life from elec-
tric shock at the communication interfaces.
►Connect only suitable devices to the bus system.
WARNING
Risk of injury due to incorrect installation
Dangerous situations may arise from unsafe or incorrect installation.
►Do not carry out your own conversions or modifications on the unit.
►Ensure the integration into an Emergency Off safety circuit.
Contact load for the accessory connections to "accessory"
1. Maintain the maximum contact load of 200 mA per connection.
2. However, do not exceed the total sum of the load of all connections of 450 mA.
Installation
15/52

4 1
5
23
32
5
1 4
13
4
2
1 9
10 18
19 26
1
2
3
4
5
1
2
3
4
5
1
2
3
4
5
1
2
3
4
5
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
accessory A
accessory B
remote
PV.canRS485
24 V DC* out
RS 485 D +
RS 485 D -
n.c.
GND*
CAN-H
GND***
CAN-L
24 V DC***
FE
+ 24 V DC* out
RS485 D-
RS485 D+
GND*
24 V DC**
FE
n.c.
24 V DC**
FE
n.c.
Accessory B1
Accessory B2
Potential free contacts
DI Motor Pump
DI Pump stand
DI Standby
DI1
DI2
DO1
DO2
DI3
AI+ 0-10 V DC
AI- GND
DI Error Acknowledgement
DI Remote Priority
Relay 1
Relay 1
Relay 1
Relay 2
Relay 2
Relay 2
Relay 3
Relay 3
AO1 / 0-10 V DC
DO Remote Priority active
Accessory A1
Accessory A2
Fig. 2: Diagram and assignments of the connection panel
Installation
16/52

4.2 "remote" connection
The 26-pin sub-D connection with the "remote" designation offers the possibility to operate the electron-
ic drive unit via remote control. The accessible individual functions are mapped to "PLC levels". The fol-
lowing specifications are the factory settings for the electronic drive unit. They can be configured with
the Pfeiffer Vacuum parameter set.
Pin Function Assignment2)
19
10
18
1926
1 +24 V DC* out-
put (V+)
Reference voltage for all digital inputs and outputs
2 DI1 Enable venting; open: off; V+: on
3 DI motor pump Drive motor; open: off; V+: on
4 DI Pumping sta-
tion
open: off; V+: on and malfunction acknowledgement
5 DI Standby Standby speed; open: off; V+: on
6 DI2 Heater; open: off; V+: on
7 AI+ speed-con-
trol operation
Setpoint in speed-control operation
2 to 10 V DC corresponds to 20 to 100% of the nominal rota-
tion speed
8 DO1 Speed-control switch point reached
GND: no, V+: yes (lmax = 50 mA/24 V)
9 DO2 GND: Fault; V+: no fault (Imax = 50 mA/24 V)
10 DI3 Sealing gas; open: off; V+: on
11 AI rotation speed
setting operation
GND
Setpoint in rotation speed setting operation; GND
12 AO1 Actual speed; 0 to 10 V DC corresponds to 0 to 100%
RL > 10 kΩ
13 DI malfunction
acknowledge-
ment
Malfunction acknowledgement: V+ pulse (min. 500 ms)
14 DI Remote priori-
ty
Operation via "remote" interface; open: off; V+: set and takes
priority over other digital inputs
15 Relay 1 Connection with pin 16, if relay 1 inactive
16 Rotation speed switchpoint reached; relay contact 1
(rpmmax = 50 V DC; Imax = 1 A)
17 Connection with pin 16, if relay 1 active
18 Relay 2 Connection with pin 19, if relay 2 inactive
19 No fault; relay contact 2 (rpmmax = 50 V DC; Imax = 1 A)
20 Connection with pin 19, if relay 2 active
21 Relay 3 Connection with pin 22, if relay 3 inactive
22 Warning; relay contact 3 (rpmmax = 50 V DC; Imax = 1 A)
23 DO remote priori-
ty
GND: off; V+: Remote priority active
24 RS-485 D+ in accordance with the specification and Pfeiffer Vacuum proto-
col
25 RS-485 D-
26 Ground (GND) Reference earth for all digital inputs and outputs
Tbl. 7: Terminal lay-out of 26-pin "remote" connection
Establish remote connection
1. Remove the remote plug from the electronic drive unit and connect a remote control.
2. Utilize a screened plug and cable.
2) Factory setting
Installation
17/52

4.3 Connection "RS-485"
The interface with the designation "RS-485" on the electronic drive unit is intended for the connection of
a Pfeiffer Vacuum display and control panel (DCU or HPU) or an external computer. The connections
are galvanically safe and are isolated from the maximum supply voltage for the electronic drive unit. The
electrical connections are optically decoupled internally.
Pin Assignment
1 2
34
5
1 RS-485 D+
2 +24 V output, ≤ 210 mA loading capacity
3 GND
4 RS-485 D-
5 not connected
Tbl. 8: Terminal layout of the RS-485 connecting socket M12
DCU 002
DCU 310 / 400
TC 400 / TM 700
HPU 001
RS-485
USB/RS-485-converter
Fig. 3: Connecting RS-485 devices
Connecting RS-485 devices
At interface RS-485, one external control panel can be connected in each case.
1. Use the respective connection cable supplied with the control panel or from the range of accesso-
ries.
2. Use the option to connect a PC via the USB/RS-485 converter.
4.4 Mains power supply
WARNING
Risk of injury due to incorrect installation
Dangerous situations may arise from unsafe or incorrect installation.
►Do not carry out your own conversions or modifications on the unit.
►Ensure the integration into an Emergency Off safety circuit.
WARNING
Danger to life from electric shock in the event of a fault
In the event of a fault, devices connected to the mains may be live. There is a danger to life from
electric shock when making contact with live components.
►Always keep the mains connection freely accessible so you can disconnect it at any time.
Installation
18/52

WARNING
Risk of danger to life through missing mains disconnection device
The vacuum pump and electronic drive unit are not equipped with a mains disconnection device
(mains switch).
►Install a mains disconnection device according to SEMI-S2.
►Install a circuit breaker with an interruption rating of at least 10,000 A.
Pin Assignment
1
2 3
PE
1 Phase L
2 Neutral conductor
3 not connected
PE Earthed conductor
Tbl. 9: Terminal lay-out of the power supply connector
Establishing mains connection
1. Order a corresponding power supply cable from the Pfeiffer Vacuum accessories range.
2. Assemble your own power supply cable using the HAN 3A connecting socket from the shipment.
3. Plug mains cable into the mains connection "AC in".
4. Secure the mains cable using a mounting bracket.
5. Connect the mains cable to the mains.
Installation
19/52

5 Interfaces
5.1 Interface RS-485
DANGER
Danger to life from electric shock
When establishing the voltages that exceed the specified safety extra-low voltage (according to IEC
60449 and VDE 0100), the insulating measures will be destroyed. There is a danger to life from elec-
tric shock at the communication interfaces.
►Connect only suitable devices to the bus system.
The interface with the designation "RS-485" on the electronic drive unit is intended for the connection of
a Pfeiffer Vacuum display and control panel (DCU or HPU) or an external computer. The connections
are galvanically safe and are isolated from the maximum supply voltage for the electronic drive unit. The
electrical connections are optically decoupled internally.
Designation Value
Serial interface RS-485
Baudrate 9600 Baud
Data word length 8 bit
Parity none (no parity)
Start bits 1
Stop bits 1
Tbl. 10: Features of the RS-485 interface
Pin Assignment
1 2
34
5
1 RS-485 D+
2 +24 V output, ≤ 210 mA loading capacity
3 GND
4 RS-485 D-
5 not connected
Tbl. 11: Terminal layout of the RS-485 connecting socket M12
Interfaces
20/52