Siemens SITOP series Technical Document

SITOP expansion modules
SITOP power supply
SITOP expansion modules
Equipment Manual
SITOP RED1200 redundancy module
6EP4346
-7RB00-0AX0
SITOP RED1200 redundancy module
6EP4347
-7RB00-0AX0
SITOP RED1200 redundancy module
6EP4348
-7RB00-0AX0
SITOP PSE202U redundancy module
6EP1961
-3BA21
SITOP PSE202U redundancy module
6EP1962
-2BA00
SITOP PSE202U redundancy module
6EP1964
-2BA00
SITOP BUF1200 buffer module
6EP4231
-7HB00-0AX0
SITOP PSE201U buffer module
6EP1961
-3BA01
Inrush current limiter Logo! ICL230
6EP4683
-6LB00-0AY0
SITOP inrush current limiter
6EP1967
-2AA00
SITOP RED1
200 Ex redundancy module
6EP4347
-7RC00-0AX0
SITOP BUF1200 Ex buffer module
6EP4231
-7HC00-0AX0
09.2022
A5E36605235
-2-76
Overview
Safety instructions
1
Description, device design,
dimension drawing
2
Mounting/removal
3
Mounting position,
mounting clearances
4
Installation
5
Technical data
6
Safety, approvals, EMC
7
Ambient conditions
8
Applications
9
Environment
10
Service & Support
11

Siemens AG
Digital Industries
Postfach 48 48
90026 NÜRNBERG
GERMANY
A5E36605235-2-76
Ⓟ
09/2022 Subject to change
Copyright © Siemens AG 2022.
All rights reserved
Legal information
Warning notice system
This manual contains notices you have to observe in order to ensure your personal safety, as well as to prevent
damage to property. The notices referring to your personal safety are highlighted in the manual by a safety alert
symbol, notices referring only to property damage have no safety alert symbol. These notices shown below are
graded according to the degree of danger.
DANGER
indicates that death or severe personal injury will result if proper precautions are not taken.
WARNING
indicates that death or severe personal injury may result if proper precautions are not taken.
CAUTION
indicates that minor personal injury can result if proper precautions are not taken.
NOTICE
indicates that property damage can result if proper precautions are not taken.
If more than one degree of danger is present, the warning notice representing the highest degree of danger will
be used. A notice warning of injury to persons with a safety alert symbol may also include a warning relating to
property damage.
Qualified Personnel
The product/system described in this documentation may be operated only by personnel qualified for the specific
task in accordance with the relevant documentation, in particular its warning notices and safety instructions.
Qualified personnel are those who, based on their training and experience, are capable of identifying risks and
avoiding potential hazards when working with these products/systems.
Proper use of Siemens products
Note the following:
WARNING
Siemens products may only be used for the applications described in the catalog and in the relevant technical
documentation. If products and components from other manufacturers are used, these must be recommended
or approved by Siemens. Proper transport, storage, installation, assembly, commissioning, operation and
maintenance are required to ensure that the products operate safely and without any problems. The permissible
ambient conditions must be complied with. The information in the relevant documentation must be observed.
Trademarks
All names identified by ® are registered trademarks of Siemens AG. The remaining trademarks in this publication
may be trademarks whose use by third parties for their own purposes could violate the rights of the owner.
Disclaimer of Liability
We have reviewed the contents of this publication to ensure consistency with the hardware and software
described. Since variance cannot be precluded entirely, we cannot guarantee full consistency. However, the
information in this publication is reviewed regularly and any necessary corrections are included in subsequent
editions.

SITOP expansion modules
Equipment Manual, 09.2022, A5E36605235-2-76 3
Overview
The quality of a power supply alone cannot guarantee a disturbance-free 24 V. Various risks,
such as power failures, extreme line voltage fluctuations etc., can disturb plant or system
operation and result in significant costs. Various SITOP expansion modules facilitate the
completely flexible expansion of SITOP power supplies, and offer reliable protection against
the widest range of risks. The following expansion modules are available to increase system
availability.
SITOP RED1200 redundancy modules
The key benefits of this product include:
•Can be used for power supplies with output voltages 12 V up to 48 V
•High power supply reliability as a result of the redundant structure
•Reliable supply even if one power supply unit fails
•Compact redundancy modules for power supplies up to 40 A
•Simple commissioning using a push-in connection system
•Quick and simple rail mounting

Overview
SITOP expansion modules
4Equipment Manual, 09.2022, A5E36605235-2-76
SITOP PSE202U redundancy modules
The key benefits of this product include:
•High 24 V supply reliability as a result of the redundant structure
•Reliable supply even if one power supply unit fails
•Compact redundancy modules for power supplies up to 40 A
•24 V/NEC Class 2 redundancy module with 100 VA limit
•Diagnostics signal using LED and signaling contacts
•Adjustable activation threshold for LED and signaling contacts
•Quick and simple rail mounting

Overview
SITOP expansion modules
Equipment Manual, 09.2022, A5E36605235-2-76 5
Buffer module SITOP BUF1200
The key benefits of this product include:
•Only 2 cables are required to connect to the basic module
•Protection against brief power failures
•300 ms up to max. 240 s buffer time depending on the load current
•The buffer time can be extended many times by connecting units in parallel
•Electrolytic capacitors are used for maintenance-free operation
•Diagnostic message via LED
•Quick and simple rail mounting
•Simple commissioning using a push-in connection system

Overview
SITOP expansion modules
6Equipment Manual, 09.2022, A5E36605235-2-76
SITOP PSE201U buffer module
The key benefits of this product include:
•Only 2 cables are required to connect to the basic module
•Protection against brief power failures
•100 ms up to max. 10 s buffer time depending on the load current
•The buffer time can be extended many times by connecting units in parallel
•Electrolytic capacitors are used for maintenance-free operation
•Quick and simple rail mounting

Overview
SITOP expansion modules
Equipment Manual, 09.2022, A5E36605235-2-76 7
Inrush current limiter Logo! ICL230
The key benefits of this product include:
•Inrush currents are reliably reduced
•Can be used on 1-phase AC line supplies with rated voltages of 100 V, 120 V or 230 V
•Can be used on 2-phase AC line supplies with a rated voltage of 208 V
•Minimized power loss by bypassing the limiting resistor in operation
•Quick and simple rail mounting

Overview
SITOP expansion modules
8Equipment Manual, 09.2022, A5E36605235-2-76
SITOP inrush current limiter
The key benefits of this product include:
•Inrush currents are reliably reduced
•Can be used on 1-phase AC line supplies with rated voltages of 100 V, 120 V or 230 V
•Can be used on 2 and 3-phase AC line supplies with rated voltages of 208 V to 480 V
•Minimized power loss by bypassing the limiting resistor in operation
•Quick and simple rail mounting

Overview
SITOP expansion modules
Equipment Manual, 09.2022, A5E36605235-2-76 9
Ordering data
The following device versions are available:
Expansion modules
Type
Order number
Redundancy module SITOP RED1200
input/output 12 - 48 V DC/20 A
6EP4346-7RB00-0AX0
Redundancy module SITOP RED1200
input/output 12 - 48 V DC/40 A
6EP4347-7RB00-0AX0
Redundancy module SITOP RED1200
input/output 12 - 48 V DC/80 A
6EP4348-7RB00-0AX0
Redundancy module SITOP PSE202U
input/output 24 V DC/40 A
6EP1961-3BA21
Redundancy module SITOP PSE202U NEC CLASS 2
input/output 24 V DC/4 A
6EP1962-2BA00
Redundancy module SITOP PSE202U
input/output 24 V DC/10 A
6EP1964-2BA00
Buffer module SITOP BUF1200
6EP4231-7HB00-0AX0
Buffer module SITOP PSE201U
6EP1961-3BA01
Inrush current limiter Logo! ICL230
6EP4683-6LB00-0AY0
Inrush current limiter SITOP
6EP1967-2AA00
Expansion modules Ex
Type
Order number
Redundancy module SITOP RED1200 Ex
input/output 12 - 48 V DC/40 A
6EP4347-7RC00-0AX0
Buffer module SITOP BUF1200 Ex
6EP4231-7HC00-0AX0
Accessories for SITOP RED1200
Type
Order number
Reference labeling plate (160 plates)
6ES7193-6LF30-0AW0

Overview
SITOP expansion modules
10 Equipment Manual, 09.2022, A5E36605235-2-76

SITOP expansion modules
Equipment Manual, 09.2022, A5E36605235-2-76 11
Table of contents
Overview................................................................................................................................................ 3
1 Safety instructions............................................................................................................................... 15
1.1 General safety instructions................................................................................................. 15
1.2 Safety instructions for hazardous zones.............................................................................. 16
1.2.1 Redundancy module SITOP RED1200 Ex (6EP4347-7RC00-0AX0)........................................ 16
1.2.2 Buffer module SITOP BUF1200 Ex (6EP4231-7HC00-0AX0)................................................. 16
2 Description, device design, dimension drawing ................................................................................. 17
2.1 Device description ............................................................................................................. 17
2.1.1 Redundancy modules......................................................................................................... 17
2.1.1.1 SITOP RED1200.................................................................................................................. 17
2.1.1.2 SITOP PSE202U .................................................................................................................. 18
2.1.2 Buffer modules .................................................................................................................. 21
2.1.2.1 SITOP BUF1200.................................................................................................................. 21
2.1.2.2 SITOP PSE201U .................................................................................................................. 22
2.1.3 Inrush current limiter ......................................................................................................... 23
2.1.3.1 Logo! ICL230 ..................................................................................................................... 23
2.1.3.2 SITOP inrush current limiter ............................................................................................... 24
2.2 Connections and terminal designation ............................................................................... 25
2.2.1 Redundancy modules......................................................................................................... 25
2.2.1.1 SITOP RED1200.................................................................................................................. 25
2.2.1.2 SITOP PSE202U .................................................................................................................. 26
2.2.2 Buffer modules .................................................................................................................. 27
2.2.2.1 SITOP BUF1200.................................................................................................................. 27
2.2.2.2 SITOP PSE201U .................................................................................................................. 28
2.2.3 Inrush current limiter ......................................................................................................... 29
2.2.3.1 Logo! ICL230 ..................................................................................................................... 29
2.2.3.2 SITOP inrush current limiter ............................................................................................... 30
2.3 Potentiometer ................................................................................................................... 31
2.3.1 SITOP PSE202U redundancy modules ................................................................................. 31
2.4 Status displays and signaling.............................................................................................. 32
2.4.1 SITOP PSE202U redundancy modules ................................................................................. 32
2.4.2 Buffer modules .................................................................................................................. 33
2.4.2.1 SITOP BUF1200.................................................................................................................. 33
2.4.2.2 SITOP PSE201U .................................................................................................................. 33
2.4.3 Inrush current limiter ......................................................................................................... 34
2.4.3.1 Logo! ICL230 ..................................................................................................................... 34
2.4.3.2 SITOP inrush current limiter ............................................................................................... 35

Table of contents
SITOP expansion modules
12 Equipment Manual, 09.2022, A5E36605235-2-76
2.5 Dimensions and weight ..................................................................................................... 36
2.5.1 Redundancy modules......................................................................................................... 36
2.5.1.1 SITOP RED1200.................................................................................................................. 36
2.5.1.2 SITOP PSE202U.................................................................................................................. 38
2.5.2 Buffer modules.................................................................................................................. 40
2.5.2.1 SITOP BUF1200.................................................................................................................. 40
2.5.2.2 SITOP PSE201U.................................................................................................................. 41
2.5.3 Inrush current limiter ......................................................................................................... 42
2.5.3.1 Logo! ICL230 ..................................................................................................................... 42
2.5.3.2 SITOP inrush current limiter ............................................................................................... 43
3 Mounting/removal............................................................................................................................... 45
3.1 Redundancy modules......................................................................................................... 45
3.1.1 SITOP RED1200.................................................................................................................. 45
3.1.2 6EP1961-3BA21 ................................................................................................................ 47
3.1.3 6EP1962-2BA00 and 6EP1964-2BA00 ................................................................................ 48
3.2 Buffer modules.................................................................................................................. 49
3.2.1 SITOP BUF1200.................................................................................................................. 49
3.2.2 SITOP PSE201U.................................................................................................................. 50
3.3 Inrush current limiter ......................................................................................................... 51
3.3.1 Logo! ICL230 ..................................................................................................................... 51
3.3.2 SITOP inrush current limiter ............................................................................................... 53
4 Mounting position, mounting clearances ........................................................................................... 55
4.1 Standard mounting position............................................................................................... 55
4.2 Other mounting positions.................................................................................................. 59
4.2.1 Other mounting positions.................................................................................................. 59
4.2.2 SITOP RED1200.................................................................................................................. 59
4.2.2.1 6EP4346-7RB00-0AX0 ....................................................................................................... 59
4.2.2.2 6EP4347-7RB00-0AX0 and 6EP4347-7RC00-0AX0.............................................................. 62
4.2.2.3 6EP4348-7RB00-0AX0 ....................................................................................................... 64
4.2.3 SITOP PSE202U.................................................................................................................. 66
4.2.3.1 6EP1961-3BA21 ................................................................................................................ 66
4.2.3.2 6EP1962-2BA00 ................................................................................................................ 68
4.2.3.3 6EP1964-2BA00 ................................................................................................................ 70
4.2.4 Buffer modules.................................................................................................................. 72
4.2.4.1 SITOP BUF1200 (6EP4231-7HB00-0AX0 and 6EP4231-7HC00-0AX0) .................................. 72
4.2.4.2 SITOP PSE201U (6EP1961-3BA01)...................................................................................... 72
4.2.5 Inrush current limiter ......................................................................................................... 72
5 Installation........................................................................................................................................... 73
5.1 Input connections.............................................................................................................. 74
5.1.1 Redundancy modules......................................................................................................... 74
5.1.1.1 SITOP RED1200.................................................................................................................. 74
5.1.1.2 SITOP PSE202U.................................................................................................................. 75
5.1.2 Buffer modules.................................................................................................................. 76
5.1.2.1 SITOP BUF1200.................................................................................................................. 76
5.1.2.2 SITOP PSE201U.................................................................................................................. 76
5.1.3 Inrush current limiter ......................................................................................................... 77
5.1.3.1 Logo! ICL230 ..................................................................................................................... 77
5.1.3.2 SITOP inrush current limiter ............................................................................................... 77

Table of contents
SITOP expansion modules
Equipment Manual, 09.2022, A5E36605235-2-76 13
5.2 Output connections ........................................................................................................... 79
5.2.1 Redundancy modules......................................................................................................... 79
5.2.1.1 SITOP RED1200.................................................................................................................. 79
5.2.1.2 SITOP PSE202U .................................................................................................................. 83
5.2.2 Buffer modules .................................................................................................................. 84
5.2.2.1 SITOP BUF1200.................................................................................................................. 84
5.2.2.2 SITOP PSE201U .................................................................................................................. 84
5.2.3 Inrush current limiter ......................................................................................................... 85
5.2.3.1 Logo! ICL230 ..................................................................................................................... 85
5.2.3.2 SITOP inrush current limiter ............................................................................................... 85
6 Technical data...................................................................................................................................... 87
6.1 Input ................................................................................................................................. 87
6.1.1 Redundancy modules......................................................................................................... 87
6.1.2 Buffer modules .................................................................................................................. 87
6.1.3 Inrush current limiter ......................................................................................................... 88
6.2 Output .............................................................................................................................. 89
6.2.1 Redundancy modules......................................................................................................... 89
6.2.2 Buffer modules .................................................................................................................. 89
6.2.3 Inrush current limiter ......................................................................................................... 91
6.3 Protection and monitoring ................................................................................................. 92
6.3.1 Redundancy modules......................................................................................................... 92
6.3.2 Buffer modules .................................................................................................................. 92
6.3.3 Inrush current limiter ......................................................................................................... 92
6.4 Mechanical system ............................................................................................................ 93
6.4.1 Redundancy modules......................................................................................................... 93
6.4.2 Buffer modules .................................................................................................................. 94
6.4.3 Inrush current limiter ......................................................................................................... 95
6.5 Accessories........................................................................................................................ 96
6.5.1 Redundancy modules......................................................................................................... 96
6.6 Dimension drawing............................................................................................................ 97
6.6.1 Redundancy modules......................................................................................................... 97
6.6.2 Buffer modules .................................................................................................................. 97
6.6.3 Inrush current limiter ......................................................................................................... 98
7 Safety, approvals, EMC ........................................................................................................................ 99
7.1 Safety................................................................................................................................ 99
7.2 Approvals ........................................................................................................................ 100
7.2.1 SITOP RED1200................................................................................................................ 100
7.2.2 SITOP PSE202U ................................................................................................................ 100
7.2.3 Buffer modules ................................................................................................................ 101
7.2.4 Inrush current limiter ....................................................................................................... 101
7.3 EMC ................................................................................................................................ 102
7.3.1 SITOP RED1200................................................................................................................ 102
7.3.2 PSE202U.......................................................................................................................... 102
7.3.3 Buffer modules ................................................................................................................ 103
7.3.4 Inrush current limiter ....................................................................................................... 103

Table of contents
SITOP expansion modules
14 Equipment Manual, 09.2022, A5E36605235-2-76
8 Ambient conditions ........................................................................................................................... 105
9 Applications ....................................................................................................................................... 107
9.1 Redundancy circuit for increased system availability......................................................... 107
9.2 Design of 24 V load feeders with power limiting according to NEC class2.......................... 110
9.3 Protection against short-time voltage dips........................................................................ 111
10 Environment ...................................................................................................................................... 113
11 Service & Support .............................................................................................................................. 115

SITOP expansion modules
Equipment Manual, 09.2022, A5E36605235-2-76 15
Safety instructions
1
1.1 General safety instructions
WARNING
Correct handling of the devices
When operating electrical devices, it is inevitable that certain components will carry
dangerous voltages.
Therefore, failure to handle the units properly can result in death or serious physical injury
as well as extensive property damage.
Only appropriately qualified personnel may work on or in the vicinity of this equipment.
Perfect, safe, and reliable operation of this equipment is dependent on proper
transportation, storage, installation and mounting.
Before installation or maintenance work can begin, the system's main switch must be
switched off and measures taken to prevent it being switched on again.
If this instruction is not observed, touching live parts can result in death or serious injury.

Safety instructions
1.2 Safety instructions for hazardous zones
SITOP expansion modules
16 Equipment Manual, 09.2022, A5E36605235-2-76
1.2 Safety instructions for hazardous zones
It is only permissible that the devices listed below are used in hazardous zones.
1.2.1 Redundancy module SITOP RED1200 Ex (6EP4347-7RC00-0AX0)
The device complies with ATEX directive 2014/34/EU: EN IEC 60079-0; EN 60079-7;
UKSI 2016: 1107: BS EN IEC 60079-0; BS EN 60079-7
UL: Suitable for Ex applications in CLASS I, DIVISION 2, GROUPS A, B, C and D - or in non-
hazardous zones only.
WARNING
EXPLOSION HAZARD – DO NOT CONNECT OR DISCONNECT EQUIPMENT UNLESS POWER HAS
BEEN SWITCHED OFF OR THE AREA IS KNOWN TO BE NON-HAZARDOUS
WARNING
EXPLOSION HAZARD – SUBSTITUTION OF COMPONENTS MAY IMPAIR SUITABILITY FOR CLASS
I, DIVISION 2
1.2.2 Buffer module SITOP BUF1200 Ex (6EP4231-7HC00-0AX0)
The device complies with ATEX directive 2014/34/EU: EN IEC 60079-0; EN 60079-7;
UKSI 2016: 1107: BS EN IEC 60079-0; BS EN 60079-7
UL: Suitable for Ex applications in CLASS I, DIVISION 2, GROUPS A, B, C and D - or in non-
hazardous zones only.
WARNING
EXPLOSION HAZARD – DO NOT CONNECT OR DISCONNECT EQUIPMENT UNLESS POWER HAS
BEEN SWITCHED OFF OR THE AREA IS KNOWN TO BE NON-HAZARDOUS
WARNING
EXPLOSION HAZARD – SUBSTITUTION OF COMPONENTS MAY IMPAIR SUITABILITY FOR CLASS
I, DIVISION 2

SITOP expansion modules
Equipment Manual, 09.2022, A5E36605235-2-76 17
Description, device design, dimension drawing
2
2.1 Device description
2.1.1 Redundancy modules
2.1.1.1 SITOP RED1200
Redundancy modules SITOP RED1200 are the optimal addition to all 12 - 48 V power supplies
to provide additional protection against failure of the 12 - 48 V supply. The redundancy
module continuously monitors the feeding power supplies, and when one device fails, the
other one automatically takes over the complete 12 - 48 V supply.
①
12 - 48 V input – supply voltage from power supplies 1 and 2
②
12 - 48 V output – supply voltage to the load and 0 V connection to the internal supply
③
Mounting rail slider
④
Natural convection
⑤
Clearance above/below
Figure 2-1 Design

Description, device design, dimension drawing
2.1 Device description
SITOP expansion modules
18 Equipment Manual, 09.2022, A5E36605235-2-76
2.1.1.2 SITOP PSE202U
Redundancy modules SITOP PSE202U are the optimum addition to all 24 V power supplies to
provide additional protection against failure of the 24 V supply. The redundancy module
continuously monitors the feeding power supplies, and when one device fails, the other one
automatically takes over the complete 24 V supply.
The failure of a 24 V power supply is signaled using an LED and a relay contact. The response
threshold for this signal can be set between 20 V and 25 V using a potentiometer on the
redundancy module. (when delivered, 20 V)
With redundancy module NEC class2, a redundant 24 V power supply can be implemented,
where the output power is limited to 100 VA.
①
24 V input – supply voltage from power supplies 1 and 2
②
24 V output – supply voltage to the load and 0 V connection to the internal supply
③
Floating relay contact (changeover contact)
④
20 - 25 V potentiometer
⑤
Indicator light
⑥
Mounting rail slider
⑦
Natural convection
⑧
Clearance above/below
Figure 2-2 Design 6EP1961-3BA21

Description, device design, dimension drawing
2.1 Device description
SITOP expansion modules
Equipment Manual, 09.2022, A5E36605235-2-76 19
①24 V input – supply voltage from power supplies 1 and 2 as well as 0 V connection to the inter-
nal supply
②
24 V output – supply voltage to the load and floating relay contact
③
Indicator light (LED)
④
Potentiometer for setting the signal threshold
⑤
Latch for manual unlocking
⑥
Lug for unlocking using a screwdriver
⑦
RST button to switch on again
⑧
Natural convection
⑨
Clearance above/below
Figure 2-3 Design 6EP1962-2BA00

Description, device design, dimension drawing
2.1 Device description
SITOP expansion modules
20 Equipment Manual, 09.2022, A5E36605235-2-76
①24 V input – supply voltage from power supplies 1 and 2 as well as 0 V connection to the inter-
nal supply
②
24 V output – supply voltage to the load and floating relay contact
③
Indicator light (LED)
④
Potentiometer for setting the signal threshold
⑤
Latch for manual unlocking
⑥
Lug for unlocking using a screwdriver
⑦
Natural convection
⑧
Clearance above/below
Figure 2-4 Design 6EP1964-2BA00