Siemens 3RP25 User manual

3RP25 Time Relays
Industrial controls
Monitoring and control devices
3RP25 Time Relays
Manual
09/2019
A5E31947765002A/RS
-AC/003
Introduction
1
Safety notes
2
Description
3
Mounting
4
Connection
5
Single function devices
6
Multifunction units
7
Technical data
8
Dimension drawings
9
Spare parts/accessories
10

Siemens AG
Smart Infrastructure
Control Products
Werner
-von-Siemens-Str. 48-50
92224 AMBERG
GERMANY
3ZX1012-0RP25-1AC1
Ⓟ
09/2019 Subject to change
Copyright © Siemens AG 2014.
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.

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Table of contents
1 Introduction................................................................................................................................................ 5
1.1 Required basic knowledge........................................................................................................5
1.2 Service&Support.......................................................................................................................5
1.3 DataMatrix code........................................................................................................................7
1.4 Standards/Regulations/Approvals ............................................................................................8
1.5 Declaration of conformity ..........................................................................................................8
1.6 Article No. scheme....................................................................................................................8
2 Safety notes............................................................................................................................................. 11
2.1 General safety notes...............................................................................................................11
2.2 Intended use ...........................................................................................................................12
2.3 Current information about operational safety .........................................................................12
3 Description............................................................................................................................................... 13
3.1 Device overview......................................................................................................................13
3.2 Device description...................................................................................................................14
3.3 Device versions.......................................................................................................................15
3.4 Special features ......................................................................................................................17
3.5 Notes on configuration............................................................................................................19
3.6 Area of application ..................................................................................................................20
3.7 Overview of 3RP25 components and accessories .................................................................22
4 Mounting.................................................................................................................................................. 23
4.1 Warning notices ......................................................................................................................23
4.2 Terminal coding ......................................................................................................................24
4.3 Mounting the devices on a standard mounting rail.................................................................25
4.4 Removing devices from a standard mounting rail ..................................................................26
4.5 Mounting the devices on a level surface ................................................................................27
4.6 Disassembling the devices from a level surface.....................................................................28
4.7 Mounting the sealable cover...................................................................................................29
4.8 Attaching set of labels (multifunction).....................................................................................30

Table of contents
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5 Connection .............................................................................................................................................. 31
5.1 Terminal assignment.............................................................................................................. 31
5.2 Position of the connecting terminals ...................................................................................... 35
5.3 Connection data for terminals ................................................................................................ 38
5.4 Connecting the screw-type terminals..................................................................................... 39
5.5 Disconnecting the screw-type terminals ................................................................................ 40
5.6 Wiring rules for spring-loaded terminals (with push-in technology) ....................................... 41
5.7 Connect the spring-loaded terminal (push-in)........................................................................ 42
5.8 Disconnect the spring-loaded terminal (push-in) ................................................................... 44
5.9 Attaching the terminals .......................................................................................................... 45
5.10 Removing the terminals ......................................................................................................... 46
6 Single function devices ............................................................................................................................ 49
6.1 Structure................................................................................................................................. 49
6.2 Time setting single function unit............................................................................................. 50
6.3 ON-delay ................................................................................................................................ 51
6.4 OFF-delay .............................................................................................................................. 54
6.5 Flasher relay asymmetrical (clock generator)........................................................................ 58
6.6 Star-delta (wye-delta) function ............................................................................................... 59
6.7 Star-delta (wye-delta) function with coasting time (idling) ..................................................... 60
7 Multifunction units .................................................................................................................................... 65
7.1 Structure................................................................................................................................. 65
7.2 Time setting multifunction unit ............................................................................................... 66
7.3 Function table multifunction (3RP2505)................................................................................. 69
8 Technical data ......................................................................................................................................... 83
8.1 Technical data in Siemens Industry Online Support.............................................................. 83
9 Dimension drawings ................................................................................................................................ 85
9.1 Dimension drawings 3RP25 devices ..................................................................................... 85
10 Spare parts/accessories .......................................................................................................................... 89
10.1 Accessories for 3RP25 .......................................................................................................... 89

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Introduction
1
1.1 Required basic knowledge
Basic knowledge of low-voltage industrial controls is required to understand this manual.
1.2 Service&Support
Online Support
The Online Support in the Service&Support portal is an extensive information system for all
questions relating to Siemens products and solutions. This service enables direct and central
access to in-depth information concerning the products, systems and applications for
industry and to a large number of programming, configuration and application examples. Its
content is available via a mobile app.
The Technical Forum of the Online Support provides the opportunity for users to swap
information. Support Request allows contact to be established with Siemens experts in
Technical Support.
Siemens Industry Online Support ensures that users in industry are always kept up-to-date
with news, software updates and announcements by means of newsletters and Twitter.
Links: Service&Support Portal (http://support.automation.siemens.com), Online Support
(http://support.automation.siemens.com/WW/view/de/16605022)
Product Support
Are you looking for product information such as technical data, updates or FAQs? Here, the
"Product Support" section of the Service & Support Portal offers an extensive collection of all
information about the Siemens Industry Automation and Drive Technologies products and
solutions:
●Answers to frequently asked questions (FAQs)
●Updates/upgrades, service packs and support tools for downloading
●Manuals and operating instructions
●Technical data/CAx data
●Approvals and certificates
●Test certificates and characteristic curves
All Product Support information is at your disposal free of charge and around the clock, and
you always get the current version.
Link: Product Support (http://support.automation.siemens.com/WW/view/de/4000024)

Introduction
1.2 Service&Support
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CAx data
The CAx Download Manager provides you with a simple means of gaining access to up-to-
date product data for your CAx or CAe system.
You configure your own download package with just a few clicks. You can choose from the
following information for products
●Product images
●2D dimensional drawings
●3D models
●Internal circuit diagrams
●EPLAN macro files
●Manuals
●Characteristics
●Operating instructions
●Certificates
●Product master data
Link: CAx Download Manager
(http://support.automation.siemens.com/WW/view/de/42455541)
Applications & Tools
Applications & Tools supports you with various tools and examples when it comes to solving
your automation tasks. Solutions are presented in interaction with several components in the
system, without focusing on individual products.
●Application examples
●Function blocks & tools
●Background and system descriptions
●Performance statements
●Demonstration systems/videos
Link: Applications & Tools (http://support.automation.siemens.com/WW/view/de/20208582)
My Documentation Manager
My Documentation Manager enables you to compile your own documentation from our
standard documents (manuals), which are located in the Product Support section. Under
mySupport, you have the opportunity to create and manage you own compilations in a
structure of their own.
Link:
MyDocumentationManager (http://support.automation.siemens.com/WW/view/de/38715968)
Reference
You can find further information on structure and navigation in Online Support here
(http://support.automation.siemens.com/WW/view/de/11774658).

Introduction
1.3 DataMatrix code
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1.3 DataMatrix code
A DataMatrix code is lasered onto the lower terminal cover of all devices of this series.
DataMatrix codes are standardized in ISO/IEC 16022. The DataMatrix codes on Siemens
devices use ECC200 coding.
The following device information is encoded in the DataMatrix codes as a bit stream:
●Article number
●Serial number
This information is stored in the following format in the DataMatrix code:
1P
Article number
+
S
Serial number
Data identifier Net content Separator Data identifier Net content
Note
The information content is displayed without spaces.
This machine-readable information simplifies and accelerates handling of the respective
devices.
As well as fast access to the serial numbers of the respective devices for unique
identification, the DataMatrix codes simplify communication with Siemens Technical Support.
SIEMENS Industry Support App
DataMatrix codes primarily enable extremely fast and convenient access to all device-
specific information relating to an article number in the SIEMENS Service&Support Portal
(http://support.automation.siemens.com), such as operating instructions, manuals, data
sheets, FAQs, etc.
We provide the SIEMENS Industry Support app free for this purpose and it can be used on
most commercially available smartphones and tablets.
The SIEMENS Industry Support app is available for iOS and Android-based devices and can
be accessed via the following links:
Link for Android
Link for iOS
Link for Windows Phone

Introduction
1.4 Standards/Regulations/Approvals
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1.4 Standards/Regulations/Approvals
Standards
The time relays comply with the following standards:
●EN 61812-1/DIN VDE 0435 Part 2021 "Electrical relays, time relays"
●EN 60947-5-1; (VDE 0660 Part 200) "Low-Voltage Switchgear and Controlgear"
●EN 61000-6-2 and EN 61000-6-4 "Electromagnetic compatibility"
UL/CSA/Shipbuilding approval
(applied for, for the current status see the Product Data Sheet in the Siemens Industry Mall)
SIRIUS time relays have UL and CSA approval for use all over the world. They have also
been prototype-tested by the GL, LRS, and DNV shipbuilding companies.
1.5 Declaration of conformity
The manufacturer declares that the time relays of the SIRIUS 3RP25 series in the designs
marketed by us comply with the applicable basic health and safety requirements of the EC
Directives* stated (including amendments) and that the stated standards* were applied in
their design and construction.
* You can download the complete EC Declaration of Conformity from the Service Portal
(https://support.industry.siemens.com/cs/ww/en/ps/cert) as a PDF.
1.6 Article No. scheme
Note
The Article No. scheme is presented here merely for information purposes and for better
understanding of the logic behind the article numbers.
For your orders,
please use the article numbers quoted in the catalog in the Selection and
ordering data.

Introduction
1.6 Article No. scheme
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Digit of the
A
rticle No.
1st - 5th 6th 7th 8th 9th 10th 11h 12th
SIRIUS timing
relay
3 R P 2 5 ☐ ☐ - ☐ ☐ ☐ ☐ 0
Functional
variant
☐
0
1
2
3
4
5
6
7
Multifunction
ON-delay with a time range
ON-delay > 1 time range
OFF-delay with control signal
OFF-delay without control signal and
Non-volatile (positive passing make
contact)
Flasher relays asymmetrical (clock-pulse)
Start-delta (wye-delta) function (SD) with
coasting time
Star-delta (wye-delta) function (SD)
Time ranges ☐ 0
1
2
3
4
5
6
7
0.05 … 600 s, 1... 20 s, (SD, 30 ... 600 s
coasting time)
0.5 ... 10 s
1 ... 30 s
5 ... 100 s
1 ... 20 s (SD)
7 time ranges 0.05 s... 100 h
3 ... 60 s (SD)
4 time ranges 0.05 ... 240 s
Connection
system
☐ 1
2
Screw terminal
Spring-loaded terminal (push-in)
Output type ☐ A
B
C
E
N
R
S
1 CO relay
2 CO relay
1 NO semiconductor contact (AC/DC)
1 NO semiconductor contact (AC/DC),
two-wire
2 NO contacts
1 relay, 2 CO contacts, positively-driven
and hard gold-plated contacts
3 NO contacts
Supply
voltage
☐
T
W
M
(GND)
B
400 ... 440 V AC
12 ... 240 V AC/DC
200 ... 240 V / 380 ... 440 V AC
24 V AC/DC
Frequency
range
☐
2
3
50/60 Hz AC
50/60 Hz AC/DC
Example 3 R P 2 5 0 5 - 1 A W 3 0 Multifunction relays with 7 time ranges;
screw-type terminals; 1 CO relay contact;
12 ... 240 V AC/DC; 50/60 Hz

Introduction
1.6 Article No. scheme
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Safety notes
2
2.1 General safety notes
Note
Recycling and disposal
Dispose of existing packing material in accordance with applicable regulations or
recycle it.
3RP25 time relays are able to be recycled thanks to a low
-pollutant manufacturing process.
For environmentally
-
friendly recycling and disposal of your electronic waste, please contact a
company certified for the disposal of electronic waste.
WARNING
Protection against electrically conductive contamination!
The devices must be protected against conductive contamination while taking account of
the ambient conditions. One way you can do this is to install the devices in a control cabinet
with the appropriate degree of protection.
You will find more detailed information in IEC 60529, for example.
CAUTION
Protection against electrostatic charge
When handling and installing 3RP25 time relays, ensure that the components are protected
from being electrostatically charged. Changes to the system configuration and wiring are
only permissible while the supply voltage is switched off.
Connection of 3RP25 time relays is only permissible when the power supply is switched off.

Safety notes
2.2 Intended use
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2.2 Intended use
WARNING
Hazardous Voltage
Can Cause Death, Serious Injury, or Property Damage.
Intended Use of Hardware Products
This equipment is only allowed to be used for the applications described in the catalog and
in the technical description, and only in conjunction with non-Siemens equipment and
components recommended by Siemens.
Correct transport, storage, installation and assembly, as well as careful operation and
maintenance, are required to ensure that the product operates safely and without faults.
2.3 Current information about operational safety
Important note for maintaining operational safety of your system
WARNING
Hazardous voltage
Can Cause Death, Serious Injury, or Property Damage.
Please take note of our latest information
Systems with safety-related characteristics are subject to special operational safety
requirements on the part of the operator. The supplier is also obliged to comply with special
product monitoring measures. For this reason, we publish a special newsletter containing
information on product developments and features that are (or could be) relevant to
operation of safety-related systems. By subscribing to the appropriate newsletter, you will
ensure that you are always up-to-date and able to make changes to your system, when
necessary:
SIEMENS Newsletter (http://www.industry.siemens.com/newsletter) Subscribe to the
following newsletter under "Products & Solutions":
•Control Components and System Engineering News

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Description
3
3.1 Device overview

Description
3.2 Device description
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3.2 Device description
Electronic timing relays are used in control, starting, and protective circuits for all switching
operations involving time delays. Their fully developed concept and space-saving, compact
design make the SIRIUS 3RP timing relays ideal modules for control cabinet, switchgear and
control manufacturers in the industry.
Thanks to their slim-line, space-saving design from 17.5 mm, 3RP25 timing relays are
especially suitable for use in smaller control boxes, such as heating, ventilation and air-
conditioning systems, and in compressors. All 3RP25 timing relays in this enclosure version
are suitable for snapping onto TH35 mounting rails in accordance with IEC60175.
Benefit
●Transparent program with seven basic units for the 3RP timing relay
●Logistical advantages provided by versions with wide voltage range and wide setting
range
●No tools required for assembly or disassembly on standard mounting rails
●Cadmium-free relay contacts
●Recyclable, halogen-free enclosure
●Optimum price/performance ratio
●Timing relays in 17.5 mm width offer more space in the control cabinet
●Environmentally friendly laser inscription instead of printing containing solvents
●Hard gold-plated relay contacts for optimum interaction with electronic controls
●Versions with screw-type connection or alternatively with spring-loaded/push-in
technology

Description
3.3 Device versions
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3.3 Device versions
SIRIUS 3RP25 timing relays are available in the following versions:
●Single function units, e.g. "ON-delay" function
●Multifunction units
Sizes
The overall height of 100 mm has been standardized with the other system components, and
the overall depth has been standardized for all widths to 90 mm. Refer to Section
"Dimension drawings 3RP25 devices (Page 85)" for the precise dimensions. The timing
relays are designed in two widths:
●17.5 mm
This width is used predominantly for relays with one contact element (e.g. 1 CO contact)
and 8 possible connecting terminals.
●22.5 mm
This width is used predominantly for relays with several contact elements (e.g. 2 CO
contacts) and 12 possible connecting terminals.
Characteristics
The features of the 3RP25 timing relay are:
●1 CO contact (single function and multifunction with 13 functions)
●1 NO semiconductor contact (two-wire timing relay, multifunction with 13 functions)
●1 relay, 2 CO contacts, positively-driven (multifunction with 13 functions)
●2 CO contacts (multifunction with 27 functions)
●7 switchable time ranges
●Adjustable operating time from 0.05 s to 100 h
●Wide voltage range version 12 ... 240 V AC/DC
●Single function unit for the following functions:
–ON-delay with 1 or 2 CO contacts
–OFF-delay with control signal and 1 CO contact
–OFF-delay without control signal and 1 or 2 CO contacts
–Asymmetrical flasher relay (clock-pulse; pulse and interval separately adjustable) with
1 CO contact
–Star-delta (wye-delta) with 2 or 3 NO contacts, with and without overtravel function
–2-wire ON-delay with semiconductor output

Description
3.3 Device versions
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●Two-wire timing relays
In conjunction with contactors, they have the following advantages compared to
conventional timing relays:
–Reduced wiring
–Bounce-free control
–The solid-state output enables increased service life as there is no mechanical wear
●Multifunction timing relay with 1 CO contact and 13 functions (A-M) or 2 CO contacts and
27 functions (A-M + YD). The unit can be set as a 2 CO contact unit (2CO) or 1 CO
contact + 1 CO contact unit (1CO+1CO):
Function
- 1CO: 1 CO contact
- 1NO: 1 NO contact
- 2CO: 2 CO contacts, parallel contacts
- 1CO+1CO: 1 CO contact delayed + 1
instantaneous CO contact
- Star-delta (wye-delta) function
A
ON-delay
ON-delay and instantaneous contact
B OFF-delay with control signal OFF-delay with control signal and
instantaneous contact
C ON-delay and OFF-delay with control
signal
ON-delay and OFF-delay with control signal
and instantaneous contact
D Flasher relay, symmetrical, starting with
interval
Flasher relay, symmetrical, starting with
interval and instantaneous contact
E Passing make contact, interval relay Passing make contact, interval relay and
instantaneous contact
F Retriggerable interval relay with
deactivated control signal (passing
break contact with control signal)
Retriggerable interval relay with deactivated
control signal (passing break contact with
control signal) and instantaneous contact
G Passing make contact with control
signal, not retriggerable, (pulse-forming
with control signal)
Passing make contact with control signal, not
retriggerable, (pulse-forming with control
signal) and instantaneous contact
H Additive ON-delay, instantaneous OFF
with control signal
Additive ON-delay, instantaneous OFF with
control signal and instantaneous contact
I Additive ON-delay with control signal Additive ON-delay with control signal and
instantaneous contact
J Flasher relay, symmetrical, starting with
pulse
Flasher relay, symmetrical, starting with pulse
and instantaneous contact
K Pulse-delayed (pulse and pulse delay
adjustable)
Pulse-delayed (pulse and pulse delay
adjustable) and instantaneous contact
L Pulse-delayed with control signal (pulse
and pulse delay adjustable)
Pulse-delayed with control signal (pulse and
pulse delay adjustable) and instantaneous
contact
M (GND) Retriggerable interval relay with
activated control signal (watchdog)
Retriggerable interval relay with activated
control signal and instantaneous contact
(watchdog)
YD
Star-delta (wye-delta) function

Description
3.4 Special features
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3.4 Special features
Operating temperature
For operation from -25 °C to +60 °C, there are no restrictions for the control supply,
switching current, or ON time.
Time ranges
Up to 7 time ranges are available from 0.05 s to 100 h. These are as follows:
●0.05 s - 1 s
●0.5 s - 10 s
●5 s - 100 s
●0.5 min - 10 min
●0.05 h - 1 h
●0.5 h - 10 h
●5 h - 100 h
Wide voltage range
All functions can be operated with a wide voltage range 12 ... 240 V AC/DC.
Electrical service life
The electrical service life with contactor load (e.g. 3RT1016 contactor) is 10 million operating
cycles.
The electrical service life at 230 V AC voltage, utilization category AC-15/3 A is 100 000
operating cycles.
Start/control contact
With functions requiring a continuously active supply voltage at terminals A1/A2, the timer
function is started by a control signal at terminal B1.

Description
3.4 Special features
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Special functions
●Function "flashing, asymmetrical": Pulse and interval can be adjusted separately. (clock-
pulse)
●Function "flashing, symmetrical": the pulse/interval ratio is 1:1. (flashing)
●With the "OFF-delay without control signal" function, timing is started when the time relay
is disconnected from the supply voltage.
●On the 3RP25 time relay with 7 switchable time ranges, there is a switch position ∞. This
means "continuous (unlimited) time". If this setting is selected with the "ON-delay"
function, the output relay never connects after the supply voltage is applied (OFF
function). With the function "passing make contact", the output relay always remains on
(ON function). This can be used for test purposes.
●If the control signal in interrupted when the "additive ON-delay with control signal"
function has been selected, timing stops and continues when the control signal is closed
again.
This function is not non-volatile and requires a continuous control signal supply.
●With the function "pulse-forming with control signal", an activated control signal triggers
an adjustable timing period. The control signal can be shorter or longer than the desired
operating time.

Description
3.5 Notes on configuration
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3.5 Notes on configuration
Prerequisites
NOTICE
Potential property damage.
Only change the time setting range or function in the de-energized state.
Start input
The control signal at B1 may only be applied when the supply voltage is already present at
A1 / A2.
Same potential
The same potential must be applied at terminals A1 and B1. This means the supply voltage
and the control signal must be identical.
Combination voltage
With combination voltage versions, only one voltage range must ever be connected at one
time. Never apply both control voltages simultaneously.
Parallel load at the start contact
A circuit with parallel load is permissible with AC and DC on the 3RP25 timing relays.
Positively-driven contacts
When using positively driven contacts with 3RP2502-xRW30, the same power supply /
voltage must be used for both changeover contacts.

Description
3.6 Area of application
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3.6 Area of application
Functions
Time relays with ON-delay
●Interference pulse suppression (gating of interference pulses)
●Gradual startup of motors so as not to overload the power supply
Time relays with OFF-delay
●Generation of overtravel functions following removal of voltage
●Gradual, delayed shutdown, e.g. of motors or fans to allow a plant to be shut down
selectively
Star-delta (wye-delta) time relay
●Motor changeover from star (wye) to delta with a changeover delay of 50 ms to prevent
interphase short-circuit
Multifunction time relays
●Maximum flexibility, with a device for every application
Additive ON-delay, instantaneous OFF with control signal
●e.g. for the control of cyclical machine lubrication operations dependent on operating
hours
Flasher relay, symmetrical, starting with pulse
●Gradual adjustability of longitudinal feed on punching/embossing machines
Pulse-delayed relay
●Time relay with which the timing period starts when the control supply voltage is applied
and the output briefly switches to the working position after expiry of the set time delay
Pulse-delayed relay with control signal
●Time relay with which the timing period starts when the supply voltage and the control
signal are applied, and the output briefly switches to the working position after expiry of
the set time delay