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
5-19 Terminal 37 Safe Stop
is set to
default value
[1]* Safe Stop Alarm
or combined STO and
MCB 112 where
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
The alarm
Safe Stop [A68]
displays in the
local control panel (LCP), if mounted.
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 above steps are passed.
4.5.2 Automatic Restart of STO Application
Application where
5-19 Terminal 37 Safe Stop
is set to
[3]
Safe Stop Warning
or combined Safe Torque Off and MCB
112 where
5-19 Terminal 37 Safe Stop
is set to
[7] PTC 1 &
Relay W
or
[8] PTC 1 & Relay A/W
):
1.
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).
2.
Check that:
2a
The motor coasts.
2b
The mechanical brake activates (if
connected).
2c
The alarm
Safe Stop [A68]
displays in the
local control panel (LCP), if mounted.
3.
Reapply 24 V DC to terminal 37.
4.
Ensure that the motor becomes operational
again.
The commissioning test is successfully completed when all
the above steps are passed.
NOTICE
See the warning on the restart behaviour in
chapter 2.3 Safety Precautions
.
4.6 System Configuration Security
•
Security measures are the responsibility of the
user.
•
The frequency converter parameters can be
password-protected.
4.7 Service and Maintenance
Conduct a functional test every 12 months to detect any
failure or malfunction of the STO functionality.
To conduct the functional test, perform the following
steps:
1.
Remove the 24 V DC voltage supply at terminal
37.
2.
Check if the LCP displays the alarm
Safe Stop A68
.
3.
Verify that the frequency converter trips the unit.
4.
Verify that the motor is coasting and comes to a
complete stop.
5.
Verify that the motor cannot be started.
6.
Reconnect the 24 V DC voltage supply to
terminal 37.
7.
Verify that the motor is not started automatically
and restarts only by giving a reset signal (via Bus,
Digital I/O, or [Reset] key).
Commissioning
Operating Instructions
10
Danfoss A/S © 09/2014 All rights reserved.
MG37D202
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