Safety-oriented error causes and solutions
TR-Electronic GmbH 2022, All Rights Reserved
Printed in the Federal Republic of Germany
Page 30 of 35
TR-EMO-BA-GB-0023 v00
04/20/2022
8.2 Error and warning messages via the fieldbus interface
The safety-oriented functions are currently only supported by the encoTRive drive system with
PROFINET interface. Therefore, for the exact structure of the error array, please refer to the interface-
specific user manual for PROFINET, see chapter “Document download” on page 35.
Error messages are generally indicated via
PNU 947
and warning messages via
PNU 953
. Error
messages must be acknowledged via the control word
PNU 967
after the cause of the error has been
eliminated. Warning messages do not need to be acknowledged.
Error messages, PNU 947
No.
Cause
Solution
400
- Safe state, the drive cannot be moved. The
STO or SS1 safety function has been cor-
rectly triggered.
If the situation requires a return to the unsafe
state again, the safety-oriented function in-
puts I11, I12 or I21 must be reset again in
accordance with chapter 7 on page 27 .
401
Safe state, the drive cannot be moved. An
STO error has been detected in the safety
module.
-
Subindex 1 = 1
-
The synchronization time of ≤ 1 s between
inputs I11 and I12 or I11 and I21 has been
exceeded.
- A short-circuit was detected between in-
puts I11 and I12 or I11 and I21 (cross-
circuit).
- The switching process for both inputs must
occur within one second.
- Make sure that no short-circuit is present
between the two inputs.
- When the error has been eliminated, it
must be acknowledged via PNU 967. An
attempt can then be made to trigger the
safety function again.
Subindex 1 ≥ 2
- An exception error has occurred
Try to restart the encoTRive drive system, if
this measure is unsuccessful, the encoTRive
drive system must be replaced.
402
- Safe state, the drive cannot be moved. An
STO error has been detected in the inter-
nal communication.
Try to restart the encoTRive drive system, if
this measure is unsuccessful, the encoTRive
drive system must be replaced.
Warning messages, PNU 953
No.
Cause
Solution
4096
(Bit 12)
- The SS1 safety function has been correctly
triggered. The safe state (STO) occurs af-
ter expiry of the SS1 delay time.
If the situation requires a return to the unsafe
state again, the safety-oriented function in-
puts I11, I12 or I21 must be reset again in
accordance with chapter 7 on page 27 .
8192
(Bit 13)
-
The synchronization time of ≤ 1 s between
inputs I11 and I12 or I11 and I21 has been
exceeded.
See solution above under error no. 401,
Subindex = 1
