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iC7-Automation Frequency Converters Quick Installation Guide
Installation Guide
c.
Ensure proper cooling by providing necessary clearance around the drive. Wall-mount installations require
225 mm (8.9 in) top and bottom clearance, while floor-mount installations require 225 mm (8.9 in) top clearance
only.
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d.
Create the openings in the cable entry plate (step 6).
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e.
Identify the terminals for functional extensions, fieldbus, power, and ground connections. (step 7).
f.
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Install the control wiring (step 8).
g.
-
Install the motor, mains, and PE ground wiring (step 9).
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h.
Route the control cables (step 10).
7.
Securely fasten the cover to the drive.
8.
Perform initial drive and motor setup. Consult the iC7 Series Industry Application Guide.
9.
Configure the fieldbus. Consult the iC7 Series Fieldbus Application Guide.
1.6 Functional Safety (Safe Torque Off)
The drive is shipped with all safe inputs de-energized. Without extra wiring to the safe I/O terminal blocks (X31 and X32), the STO
function is always active and the motor will not turn. For more information, refer to the iC7 Series Functional Safety Operating Guide
(136R0268).
•
To disable the STO function, install jumper wires to terminals X31 and X32. See step 7.
•
To use the STO function, wire a safety device to 1 or both of the safe I/O terminal blocks. See step 1. To prevent erroneous faults
or warnings from occurring, any unused safe I/O terminal blocks must be disabled using jumper wires or a jumper clip. One
jumper clip is included in the accessory bag.
RESIDUAL ROTATION
The STO function can be used for 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 using synchronous or permanent magnet mo-
tors must consider this residual rotation and ensure that it does not pose a safety risk. The situation is not relevant for asynchro-
nous motors.
A successful commissioning test of the STO function 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 of commissioning tests based on whether the STO parameter is set for manual restart or automatic restart. For
more information on the STO parameter, see the application guide.
•
If Parameter 7.2.1 Safe Torque Off Response = Fault, reset required, perform the commissioning steps marked with an "M".
•
If Parameter 7.2.1 Safe Torque Off Response = Warning, no reset required, perform the commissioning steps marked with an "A".
Table 1: Commissioning Test for STO Functionality
Type of test
Commissioning steps
M/A
Power on the frequency converter.
M/A
Verify that no safety faults are present.
M/A
Start the motor.
M/A
Without interrupting the mains supply, remove the 24 V DC voltage supply to both STO input terminals using
the safety device.
M/A
Verify that the motor coasts. This process can take some time.
M/A
Verify that STO activated is shown on the control panel or in the event log.
Danfoss A/S © 2023.05
W A R N I N G
N O T I C E
Instructions
AN35344302649001-000201 / 136R0272 | 7
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