"Acceleration" menu
"Deceleration" menu
"Travelling" menu
A_POS
R_POS1
R_POS2
A_NEG
R_NEG1
R_NEG2
V_2
V_3
8.4
Testing the
“
Safe Torque Off
”
function (STO)
In the course of start-up, the "Safe Torque Off (STO)" function must be tested as a safety function test.
Proceed as follows:
Test step
Result
Check the state of the two inputs STO_A and STO_B
at standstill of the drive (no travel signals).
In the Info menu /Start/Stop the STO_A and STO_B
inputs must be marked inactive by a small dot. A
large dot must be visible next to the DIAG display.
Trigger application of a travel command, e.g. by
brie
fl
y pressing the Recover UP or DOWN button.
In the Info menu /Start/Stop the STO_A and STO_B
inputs must be marked active by a large dot. A large
dot must be visible next to the DIAG display.
Attention:
As soon as the large dots are visible at
STO_A and STO_B, remove the travel command.
At standstill of the drive (no travel signals), bridge the
normally open contact of the relay for triggering the
STO_A signal so that the STO_A input is activated.
In the Info menu /Start/Stop the STO_A input must be
marked active by a large dot. A large dot must be
visible next to the DIAG display. After a time of ap-
prox. 1 second, the displays for STO_A and DIAG
change from a large dot to a small dot (all displays
marked as inactive).
The ZAdyn4C triggers the "STO-Diagnostic" error
(error 960).
Then remove the bridge at the relay contact again.
Then reset the error by switching the line voltage
off/on.
At standstill of the drive (no travel signals), bridge the
normally open contact of the relay for triggering the
STO_B signal so that the STO_B input is activated.
In the Info menu /Start/Stop the STO_B input must be
marked active by a large dot. A large dot must be
visible next to the DIAG display. After a time of ap-
prox. 1 second, the displays for STO_B and DIAG
change from a large dot to a small dot (all displays
marked as inactive).
The ZAdyn4C triggers the "STO-Diagnostic" error
(error 960).
Then remove the bridge at the relay contact again.
Then reset the error by switching the line voltage
off/on.
At standstill of the drive (no travel signals), bridge
both normally open contacts of the relay for triggering
the STO_A/STO_B signals so that both inputs are
activated.
The ZAdynpro triggers the "STO: Travel signal miss-
ing" error (error 349) after 2,5 s.
Then remove the bridge at the relay contacts again.
If one of the test steps does not achieve the described result, please contact the ZIEHL-ABEGG
customer service.
The STO safety function test should be repeated at regular intervals (e.g. annually during the TUEV
inspection).
Original operating instructions
ZAdyn4C
Start-up
R-TBA12_01-GB 2104 Index 012
Part.-No. 00163371-GB
63/224
8
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