Parker 890SD Quick Start Manual page 2

Quickstart Manual
890SD (Standalone) Drive
Frames E & F with STO SIL3/PLe
What is Safe Torque Off (STO)?
1)
It is an electronic means of preventing the 890 drive from delivering torque and power to its
connected motor. The 890 drive contains this feature as standard. It is a two channel, hardware
implemented system. It has the highest possible safety rating for a variable speed drive. It is
certified by BGIA, the German Trades Association for Industrial Safety, to Performance Level e
(PLe) for a category 3 implementation to EN ISO 13849-1 with an equivalent Safety Integrity Level
3 (SIL 3).
All STO connections are made at terminal block X11.
Where Could STO be Used?
2)
In safety control schemes for safety ratings up to category 3 PLe or SIL3. To replace expensive but
less reliable drive output contactors, including for emergency stop purposes. The 890 STO function
can also be used to implement Safe Stop 1 (SS1).
To Use the STO Function - What Should I Do Next?
3)
Read and observe all the requirements in the STO chapter 6 of the Engineering Reference Manual,
use the appropriate standards and risk assessments.
4) Replacing a NON STO Drive OR the STO Function is Not Required - What Should I Do Next?
Simply disable the STO function by Linking –
X11/01 and X11/03 to X14/03 (24V) and separately link X11/02 OR X11/04 to X14/04 (0V).
The rest of this quick start manual then applies.
5) On Start Up the MMI Displays " ***Tripped*** SAFE TORQUE OFF" or
A
on a 6511 MMI "
Because no connections to X11/01 OR X11/03, they are at 0V, the STO feature has been enabled
i.e. failed safe. Simply disable the STO feature by fitting the links described in item 4) above.
 Copyright 2016 Parker Hannifin Manufacturing Ltd
All rights strictly reserved. No part of this document may be stored in a retrieval system, or transmitted in any form or by any means
to persons not employed by a Parker Hannifin Manufacturing Ltd., company without written permission from Parker Hannifin
Manufacturing Ltd. Although every effort has been taken to ensure the accuracy of this document it may be necessary, without notice,
to make amendments or correct omissions. Parker Hannifin Manufacturing Ltd., cannot accept responsibility for damage, injury, or
expenses resulting there from.
890
HA501030U000 Issue 4
STO " . Why?
Page 1