Danfoss iC7 Serie Installationshandbuch Seite 5

iC7-Automation Frequency Converters Quick Installation
Installationsanleitung
1.6 Functional Safety (Safe Torque Off)
The drive is shipped with all safe inputs de-energized. Without extra wiring to the safe 1/0 terminal blocks (X31 and X32), the STO
function is always active and the motor will not turn.
To disable the STOfunction, install jumper wires to terminals X31 and X32.Seestep 7.
To use the STOfunction, wire a safety device to 1 or both of the safe 1/0 terminal blocks. See step 1. To prevent erroneous faults
or warnings from occurring, any unused safe1/0terminal blocks must be disabled usingjumper wires or ajumper clip. One
jumper clip is included in the accessory bag.
For more information, refer to the iC7 SeriesFunctional Safety Operating Guide (136R0268).
RESIDUAL ROTATION
The STOfunction can be usedfor asynchronous,synchronous, and permanent magnet motors. Two faults can occur in the power
semiconductor Of the drive. When using synchronous Or permanent magnet motors, a residual rotation can result from the faults.
The rotation can be calculated to angle = 360/(number of poles). The application
tors must consider this residualrotation and ensurethat it does not pose a safety risk.The situation is not relevant for asynchro
nous motors.
A successful commissioning test of the STOfunction is required after the initial installation and after each subsequent change to
the installation or application involving the STO.
Commissioning test
There are 2 types Ofcommissioning tests basedon how the STOparameter is configured. For more information on the STOparame
ter, see the application guide.
If Parameter 7.2. Safe Torque Off Response
If Parameter 7.2. I Safe Torque Off Response = Warning, no reset required, perform the commissioning
Table 1: Commissioning Test for STOFunctionality
Type of test Commissioning
Power on the frequency converter.
Verify that no safety faults are present.
WA Start the motor.
Without interrupting
the safety device.
WA Verify that the motor coasts. This process can take some time.
WA Verify that STOactivated is shown on the control panel or in the event log.
WA If the STO feedback is utilized, verify that STO is activated by checking the state of the STO Feedback.
WA Reapply 24 V DC supply to both the STO input terminals.
M/ Verify that the motor remains in the coasted state and any connected relays remain activated.
M/- Send a reset signal via fieldbus, digital 1/0, or the control panel.
Verify that the motor starts up and runs within the original speed range.
WA
Danfoss A'S @2023.05
A WARNING
NOTICE
Fault, reset required, perform the commissioning
steps
the mains supply, remove the 24 V DC voltage supply to both STO input terminals using
Guide
A
using synchronous or permanent magnet mo-
AN31974005764101-000401
Instructions
steps marked with an
steps marked with an
/ 136R0242
x
7