3.12.3 Safe Stop Commissioning Test
After installation and before first operation, perform a commissioning test of an installation or application making use of AutomationDrive FC 300 Safe
Stop.
Moreover, perform the test after each modification of the installation or application, of which the AutomationDrive FC 300 Safe Stop is a part.
NOTE!
Passing a commissioning test is mandatory for fulfilling Safety Category 3 by this type of installation or application.
The commissioning test (select one of cases 1 or 2 as applicable):
Case 1: restart prevention for Safe Stop is required (i.e., Safe Stop only where par. 5-19
Terminal 37 Safe Stop
is set to default value
[1], or combined Safe Stop and MCB112 where par. 5-19
Terminal 37 Safe Stop
is set to [6] or [9]):
1.
Remove the 24 V DC voltage supply to terminal 37 by the interrupt device while the motor is driven by the AutomationDrive FC 302 (i.e., line
power supply is not interrupted). The test step is passed if the motor reacts with a coast and the mechanical brake (if connected) is activated,
and if an LCP is mounted, the alarm “Safe Stop [A68]” is displayed.
2.
Send Reset signal (via Bus, Digital I/O, or [Reset] key). The test step is passed if the motor remains in the safe stop state, and the mechanical
brake (if connected) remains activated.
3.
Reapply 24 V DC to terminal 37. The test step is passed if the motor remains in the coasted state, and the mechanical brake (if connected)
remains activated. Step 1.4: Send Reset signal (via Bus, Digital I/O, or [Reset] key). The test step is passed if the motor becomes operational
again.
The commissioning test is passed if all four test steps 1.1, 1.2, 1.3, and 1.4 are passed.
Case 2: Automatic Restart of Safe Stop is wanted and allowed (i.e., Safe Stop only where par. 5-19
Terminal 37 Safe Stop
is set to [3],
or combined Safe Stop and MCB112 where par. 5-19
Terminal 37 Safe Stop
is set to [7] or [8]):
1.
Remove the 24 V DC voltage supply to terminal 37 by the interrupt device while the motor is driven by the AutomationDrive FC 302 (i.e., line
power supply is not interrupted). The test step is passed if the motor reacts with a coast and the mechanical brake (if connected) is activated,
and if an LCP is mounted, the warning “Safe Stop [W68]” is displayed.
2.
Send Reset signal (via Bus, Digital I/O, or [Reset] key). The test step is passed if the motor remains in the safe stop state, and the mechanical
brake (if connected) remains activated.
3.
Reapply 24 V DC to terminal 37.
The test step is passed if the motor becomes operational again. The commissioning test is passed if all three test steps 2.1, 2.2, and 2.3 are passed.
NOTE!
The Safe Stop function of AutomationDrive FC 302 can be used for asynchronous and synchronous motors. It may happen that two
faults occur in the adjustable frequency drive's power semiconductor. When using synchronous motors, this may cause a residual
rotation. The rotation can be calculated to Angle=360/(Number of Poles). The application using synchronous motors must take this
into consideration and ensure that this is not a safety-critical issue. This situation is not relevant for asynchronous motors.
NOTE!
In order to use the safe stop functionality in conformance with the requirements of EN-954-1 Category 3, a number of conditions must
be fulfilled by the installation of safe stop. Please see the section
Safe Stop Installation
for further information.
NOTE!
The adjustable frequency drive does not provide safety-related protection against unintended or malicious voltage supply to terminal
37 and subsequent reset. Provide this protection via the interrupt device, at the application level, or organizational level.
For more information, see section
Safe Stop Installation
.
3 Introduction to AutomationDrive FC 300
FC 300 Design Guide
3-44
MG.33.BC.22 - VLT
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is a registered Danfoss trademark
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