Elettronica Santerno SINUS PENTA Instructions for use

•15W0102B300 •
SINUS PENTA
PENTA MARINE
IRIS BLUE
SAFE TORQUE OFF
FUNCTION
- Application Manual -
Issued on 04/03/2015
R.00
Elettronica Santerno S.p.A.
Via della Concia, 7 - 40023 Castel Guelfo (BO) Italia
Tel. [phone] - Fax [phone]
santerno.com [email protected]
•This manual is integrant and essential to the product. Carefully read the instructions contained herein
as they provide important hints for use and maintenance safety.
•This device is to be used only for the purposes it has been designed to. Other uses should be
considered improper and dangerous. The manufacturer is not responsible for possible damages caused
by improper, erroneous and irrational uses.
•Elettronica Santerno is responsible for the device in its original setting.
•Any changes to the structure or operating cycle of the device must be performed or authorized by
Elettronica Santerno.
•Elettronica Santerno assumes no responsibility for the consequences resulting by the use of non-
original spare-parts.
•Elettronica Santerno reserves the right to make any technical changes to this manual and to the
device without prior notice. If printing errors or similar are detected, the corrections will be included in
the new releases of the manual.
•The information contained herein is the property of Elettronica Santerno and cannot be reproduced.
Elettronica Santerno enforces its rights on the drawings and catalogues according to the law.
E n g l i s h

SINUS PENTA
PENTA MARINE
IRIS BLUE
STO FUNCTION
APPLICATION MANUAL
2/27
TABLE OF CONTENTS
1. BASICS.....................................................................................................................4
1.1. GENERAL................................................................................................................4
1.2. SCOPE AND APPLICATION....................................................................................8
2. ES927 CONTROL BOARD.....................................................................................12
3. DEFINITION OF THE SYSTEM..............................................................................14
3.1. SYSTEM STRUCTURE..........................................................................................14
3.2. FUNCTIONAL DESCRIPTION...............................................................................14
4. DIAGNOSTICS.......................................................................................................16
5. VALIDATING THE OPERATION OF A SAFETY FUNCTION.................................20
5.1. ACCEPTANCE TEST REPORTS...........................................................................20
5.2. AUTHORIZED PERSON........................................................................................20
5.3. PERFORMING THE ACCEPTANCE TEST............................................................20
6. COMMISSIONING, MAINTENANCE AND DECOMMISSIONING, DISPOSAL, FAULT
TRACING AND DIAGNOSTICS.............................................................................. 22
6.1. COMMISSIONING .................................................................................................22
6.2. MAINTENANCE.....................................................................................................22
6.3. DECOMMISSIONING.............................................................................................22
6.4. DISPOSAL.............................................................................................................22
6.5. ALARM MESSAGES GENERATED BY THE DRIVE..............................................23
7. COMPONENTS FOR STO APPLICATIONS ..........................................................24
7.1. ES927 BOARD.......................................................................................................24
7.1.1. ENVIRONMENTAL REQUIREMENTS FOR EQUIPMENT INSTALLATION,
STORAGE AND TRANSPORT ................................................................................... 24
7.2. SAFETY RELAY PROPOSAL FOR STO APPLICATION.......................................25
7.3. PUSH-BUTTON PROPOSAL TO BE USED WITH EMERGENCY STOP FOR STO
APPLICATION........................................................................................................25
7.4. SWITCH PROPOSAL TO BE USED WITH PREVENTION OF UNEXPECTED
START-UP FUNCTION IMPLEMENTED WITH STO FOR STO APPLICATION ....25
7.5. CABLE PROPOSAL FOR STO APPLICATION......................................................25
8. STO TECHNICAL DATA......................................................................................... 26
8.1. STO DATA RELATED TO SAFETY STANDARDS.................................................26
9. TERMS AND ABBREVIATIONS.............................................................................27

STO FUNCTION
APPLICATION MANUAL
SINUS PENTA
PENTA MARINE
IRIS BLUE
3/27
Index of Figures
Figure 1 –Some Sinus Penta compact models............................................................................................ 5
Figure 2 –Installation example of a Sinus Penta S64/S70........................................................................... 6
Figure 3 –Installation example of a Sinus Penta S74................................................................................... 7
Figure 4 –Installation example of a Sinus Penta S75/S80........................................................................... 7
Figure 5 - Example schematic diagram of STO function with Safety Relay PILZ PNOZ X3 for safe power
cut off............................................................................................................................................................. 9
Figure 6 - Example schematic diagram of the STO function with simple emergency pushbutton.............. 10
Figure 7 –Top view of ES927..................................................................................................................... 12
Figure 8 –Front view of terminal blocks for ES927..................................................................................... 13
Figure 9 –LEDs and Display on ES927...................................................................................................... 13
Figure 10 –Integration of the STO function into the drives......................................................................... 14

SINUS PENTA
PENTA MARINE
IRIS BLUE
STO FUNCTION
APPLICATION MANUAL
4/27
1. BASICS
1.1. General
The Santerno Sinus Penta, Penta Marine and Iris Blue inverter product lines, now equipped with the new
ES927 control board, support the Safety Torque Off (STO) function. This document instructs the user on
how to properly apply the Safety Torque Off (STO) function implemented on the inverters.
The above mentioned inverters allow adjusting speed and torque values of three-phase asynchronous
motors and brushless permanent-magnet AC motors with several control modes. Control modes may be
user-defined and allow obtaining the best performances in terms of fine-tuning and energy saving for any
industrial application.
The Safe Torque Off (STO) function, integrated in these product lines, is a particular stopping method
defined in clause 4.2.2.2 of EN 61800-5-2 (2007-10), as listed below:
“4.2.2.2 Safe Torque Off (STO)
Power, that can cause rotation (or motion in the case of a linear motor), is not applied to the motor. The
PDS(SR) (Power Drive System Safety-Related) will not provide energy to the motor which can generate
torque (or force in the case of a linear motor).
NOTE 1 This safety function corresponds to an uncontrolled stop in accordance with stop category
0 of IEC 60204-1.
NOTE 2 This safety function may be used where power removal is required to prevent an
unexpected start up.
NOTE 3 In circumstances where external influences (for example, falling of suspended loads) are
present, additional measures (for example mechanical brakes) may be necessary to prevent any hazard.
NOTE 4 Electronic means and contactors are not adequate for protection against electric shock,
and additional measures for isolation may be necessary.”
The STO is a function that allows stopping the motor in a safe way if externally demanded. The STO
function removes power from the motor by disabling the PWM commands from the CPU to the IGBT
drivers.
The STO function can be used also to prevent unexpected start up of the motor.
The STO function in the Sinus Penta, Penta Marine and Iris Blue drives is obtained at a hardware level
and its activation is absolutely independent of the software and the CPU of the inverter. The drive
firmware implements only non-critical diagnostic functions related to the STO function.
Where external influences (for example, falling of suspended loads) are present, additional measures (for
example mechanical brakes) may be necessary to prevent any hazard.
WARNING
The Safe Torque Off function does not cut off the mains voltage and auxiliary
circuits from the drive. Therefore, maintenance work on electrical parts of the
drive or the motor can only be carried out after isolating the drive system from
the mains supply.
NOTE
The Safe Torque Off function can be used for stopping the drive in
emergency stop situations. In normal operating mode, it is recommended not
to stop the drive by using the Safe Torque Off function. If a running drive is
stopped by using the Safe Torque Off function, the drive will trip and perform
a coast to stop. If this is not acceptable, e.g. causes danger, the drive and
machinery must be stopped using the appropriate stopping mode instead of
adopting the STO function.
NOTE
Note concerning permanent magnet motor drives in case of multiple
IGBT power semiconductor failure:
Due to the possible DC output voltage present for certain multiple IGBT
failures, in spite of the activation of the Safe Torque Off function, the drive
system can produce an alignment torque which maximally rotates the motor
shaft by 180/p degrees (p is the pole pair number).

STO FUNCTION
APPLICATION MANUAL
SINUS PENTA
PENTA MARINE
IRIS BLUE
5/27
Figure 1 (compact inverter) and Figure 2, Figure 3, Figure 4 (modular inverter) show the different sizes
and structures of inverters relative to the Sinus Penta drives.
The Penta Marine and Iris Blue product lines share the same sizes and physical appearance as the Sinus
Penta; the only differences lie in the control functions and the selection of power conversion components,
optimized for the target market.
This manual covers the three product lines as they share the same control board ES927 and the STO
function is implemented exclusively in the control board hardware components.
Figure 1 –Some Sinus Penta compact models