72
JVL Industri Elektronik A/S - User Manual - Integrated Stepper Motors MIS17x, 23x, 34x, 43x
3.4.13
Service and maintenance
For PL e or SIL3, it is a must, for lower PL or SIL it is recommended to conduct a func-
tional test every 12 months to detect any failure or malfunction of the STO functionality.
To conduct the functional test, perform the following steps (or a similar method suitable
for the application):
1. Remove the 24 V DC voltage supply from the STO A and B.
2. Check if the monitoring gives an error message.
3. Verify that the motor is coasting and comes to a complete stop.
4. Verify that the motor cannot be started by re-applying the 24 V DC to STO A and B.
5. Verify that the motor is not started automatically until errors are cleared and the mo-
tor is set in an active mode.
3.4.14
Capabilities
Safe Torque Off performs a safety function such that when one of the STO inputs is not
active, (i.e. open-circuit or set at nominally 0V), the motor will not develop torque. The
STO function is implemented purely in simple solid state hardware for which substantial
failure data exists, allowing meaningful quantitative FMEA to be carried out. The function
does not use software or complex hardware. The probability of failure of the safety func-
tion due to a hardware fault has been estimated by JVL Industri Elektronik A/S as 1,38e-
10 per hour (IEC61508/IEC62061/IEC61800-5-2) or 4,29e-8 per hour (ISO13849), and
assessed by the independent notified body TÜV NORD
(pending)
. The input is compat-
ible with self-testing digital outputs of controllers such as PLCs, where the test pulse is a
maximum of 1 ms. This means that the drive is not disabled by logic-low input pulses with
a maximum of 1 ms duration.
3.4.15
Limitations
• STO uses solid-state techniques, it does not provide physical separation of electrical
connections and is not intended to provide electrical isolation.
• STO does not provide braking, it disables the motor so no motor electrical braking
is available. If motor braking is a requirement then an external arrangement must be
made to stop the motor conventionally and then to safely remove the STO inputs to
activate STO. Braking by the drive is not a high-integrity function, if braking is a safety
requirement then an independent fail-safe brake must be provided.
Option
Содержание MIS17 Series
Страница 56: ...56 JVL Industri Elektronik A S User Manual Integrated Stepper Motors MIS17x 23x 34x 43x ...
Страница 57: ...JVL Industri Elektronik A S User Manual Integrated Stepper Motors MIS17x 23x 34x 43x 57 3 Functional Safety ...
Страница 76: ...76 JVL Industri Elektronik A S User Manual Integrated Stepper Motors MIS17x 23x 34x 43x ...
Страница 77: ...JVL Industri Elektronik A S User Manual Integrated Stepper Motors MIS17x 23x 34x 43x 77 4 Using MacTalk ...
Страница 165: ...JVL Industri Elektronik A S User Manual Integrated Stepper Motors MIS17x 23x 34x 43x 165 7 Error Handling ...
Страница 177: ...JVL Industri Elektronik A S User Manual Integrated Stepper Motors MIS17x 23x 34x 43x 177 8 Registers ...
Страница 235: ...JVL Industri Elektronik A S User Manual Integrated Stepper Motors MIS17x 23x 34x 43x 235 9 Building Sequential Programs ...
Страница 266: ...266 JVL Industri Elektronik A S User Manual Integrated Stepper Motors MIS17x 23x 34x 43x ...
Страница 309: ...JVL Industri Elektronik A S User Manual Integrated Stepper Motors MIS17x 23x 34x 43x 309 12 Modbus interface ...
Страница 313: ...JVL Industri Elektronik A S User Manual Integrated Stepper Motors MIS17x 23x 34x 43x 313 13 Stand alone electronics ...
Страница 318: ...318 JVL Industri Elektronik A S User Manual Integrated Stepper Motors MIS17x 23x 34x 43x ...
Страница 319: ...JVL Industri Elektronik A S User Manual Integrated Stepper Motors MIS17x 23x 34x 43x 319 15 Technical Data ...
Страница 325: ...JVL Industri Elektronik A S User Manual Integrated Stepper Motors MIS17x 23x 34x 43x 325 15 5 Torque Curves ...
Страница 338: ...338 JVL Industri Elektronik A S User Manual Integrated Stepper Motors MIS17x 23x 34x 43x 15 8 Trouble shooting guide ...
Страница 340: ...340 JVL Industri Elektronik A S User Manual Integrated Stepper Motors MIS17x 23x 34x 43x 16 1 Cables ...
Страница 345: ...JVL Industri Elektronik A S User Manual Integrated Stepper Motors MIS17x 23x 34x 43x 345 17 Appendix ...
Страница 355: ...JVL Industri Elektronik A S User Manual Integrated Stepper Motors MIS17x 23x 34x 43x 355 18 Declarations ...
Страница 362: ...362 JVL Industri Elektronik A S User Manual Integrated Stepper Motors MIS17x 23x 34x 43x 18 4 TÜV certificate ...