Commissioning
4.5 STO Commissioning Test
After installation and before first operation, perform a
commissioning test of the installation, using STO.
Perform the test again after each modification of the
installation or application involving the STO.
NOTICE
A successful commissioning test of the STO function is
required after the initial installation, and after each
subsequent change to the installation.
To perform a commissioning test:
•
Follow the instructions in chapter 4.5.1 Restart
Prevention for STO Application for applications
without automatic restart after a safe stop, or
•
Follow the instructions in chapter 4.5.2 Automatic
Restart of STO Application for applications with
automatic restart after a safe stop.
4.5.1 Restart Prevention for STO
Application
Application where parameter 5-19 Terminal 37 Safe Stop is
set to default value [1]* Safe Stop Alarm or combined STO
®
and VLT
PTC Thermistor MCB 112 where
parameter 5-19 Terminal 37 Safe Stop is set to [6] PTC 1 &
Relay A or [9] PTC 1 & Relay W/A):
1.
Remove the 24 V DC voltage supply to terminal
37 using the interrupt device while the frequency
converter drives the motor (that is mains supply
is not interrupted).
2.
Check that:
2a
The motor coasts.
2b
The mechanical brake activates (if
connected).
2c
If the local control panel (LCP) is
mounted, it shows Alarm 68, Safe Stop.
3.
Reapply 24 V DC to terminal 37.
4.
Ensure that the motor remains in the coasted
state, and the mechanical brake (if connected)
remains activated.
5.
Send reset signal (via bus, digital I/O, or [Reset]
key).
6.
Ensure that the motor becomes operational
again.
The commissioning test is successfully completed when all
the given steps are passed.
MG37D502
Operating Guide
4.5.2 Automatic Restart of STO Application
Application where parameter 5-19 Terminal 37 Safe Stop is
set to [3] Safe Stop Warning or combined Safe Torque Off
and VLT
parameter 5-19 Terminal 37 Safe Stop is set to [7] PTC 1 &
Relay W or [8] PTC 1 & Relay A/W):
1.
2.
3.
4.
The commissioning test is successfully completed when all
the given steps are passed.
NOTICE
See the warning on the restart behavior in
chapter 2.3 Safety Precautions.
4.6 System Configuration Security
•
•
Danfoss A/S © 01/2018 All rights reserved.
®
PTC Thermistor MCB 112 where
Remove the 24 V DC voltage supply to terminal
37 by the interrupt device while the frequency
converter drives the motor (that is mains supply
is not interrupted).
Check that:
2a
The motor coasts.
2b
The mechanical brake activates (if
connected).
2c
If the local control panel (LCP) is
mounted, it shows warning 68, Safe Stop.
Reapply 24 V DC to terminal 37.
Ensure that the motor becomes operational
again.
Security measures are the responsibility of the
user.
The frequency converter parameters can be
password-protected.
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