Sto - Safe Torque Off - JVL MIS17 Series User Manual

3.1
3.1.1 Introduction
This section provides information for use of MIS stepper motors in functional safety ap-
plications. The section includes information about functional safety standards, the STO
function, the related installation and commissioning and service and maintenance for
STO.
3.1.2 Functional overview
Introduction
As an option the MIS motor can be delivered with the so-called STO function which to a
certain extend can simplify the safety system in the actual application. If the STO option
is present in the motor an extra 4-pin M8 connector is available with 2 inputs. These 2
inputs need to be applied with a 24V (nom.) voltage in order to let the motor be ener-
gized and thereby operate. If one or both of the inputs are not supplied, the motor will
be de-energized and no movement will happen regardless which commands are sent to
the motor. The STO input simply overrule any other attempts to let the motor run. The
default settings require manual restart of the motor when the STO signals are re-applied.
Products covered and identification
The whole range of MIS and MIL stepper motors offers the STO option. To identify
whether a motor has the STO option installed, please check the last 2 digits of the type
number:
Nomenclature for the MIS product family
MIS23_ _ _ _ _ _ _
TT2548-02GB
58 JVL Industri Elektronik A/S - User Manual - Integrated Stepper Motors MIS17x, 23x, 34x, 43x

STO - Safe Torque Off

Options:
Torque rating
Shaft version
etc.
XX
Motor size
Connectivity:
- Ethernet type
- Wireless
- CANopen
- Basic I/O
Feedback type (if any)
Controllertype
S6 = Includes STO.
P6 = Includes STO.
S8 = Includes STO.
P8 = Includes STO.
S = Standard P = Potted
Option