Procedure
1. Disconnect all power supplies before removing the option.
2. Verify that no voltage is present.
3. Remove the safety option according to the instructions in the Installation chapter in VLT® AutomationDrive FC 301/FC 302
Operating Guide or in VLT® Decentral Drive FCD 302 Operating Guide.
N O T I C E
If the removed safety option is installed in another drive, the drive issues a warning. The user can then select the safety
configuration from either the drive or from the safety option.
9.2.2 Replacing the Safety Option (FC 302 only)
W A R N I N G
ELECTRICAL SHOCK HAZARD
AC drives contain high voltage when connected to AC mains input, DC supply, or load sharing. Having non-qualified personnel
replacing the safety option can result in death or serious injury.
-
Always disconnect mains supply to the drive before removing the safety option.
-
Only qualified personnel are allowed to remove the safety option.
When replacing the safety option, note the following:
• If the firmware version has changed, configured functions and stated parameters may no longer be supported, or may have been
modified. Adapt the configuration in VLT® Motion Control Tool MCT 10.
Use 1 of the following ways to program the safety option after replacement:
• Reset the safety option to blank initial state as described in VLT® Motion Control Tool MCT Operating Guide and reprogram the
safety option using MCT 10 as on the 1
st
commissioning. See
5.1 Before Commissioning and 5.2 Commissioning Procedure.
• Use the parameter mismatch functionality to use an existing parameter set with the new safety option.
• Copy the safe parameters using the graphical LCP, INSERT XREF TO 9.2.4 COPYING SAFE PARAMETER CONFIG
N O T I C E
Protect the safety parameter configuration from changes using the password protection. For example, the changes may occur
when there is a parameter mismatch, or when copying the parameters via LCP. Parameter 0-68 Safety Parameters Password and
parameter 0-69 Password Protection of Safety Parameters allow configuring the safety parameter password protection. This
protection is different from the password that MCT 10 uses. For more information, see 7.2 Parameter Lists.
N O T I C E
If the safety option is replaced with a different safety option model, for example, if VLT® Safety Option MCB 152 is replaced with
a VLT® Safety Option MCB 150 or vice versa, the drive trips with Alarm 67, Option Change or Alarm 88, Option Detection. For more
information, see 9.2.1 Removing the Safety Option (FC 302 only).
Maintenance, Diagnostics, and
Troubleshooting
Installation Guide | VLT®Safety Option MCB 152
AN327351953089en-000101 / 130R0578| 59
Danfoss A/S © 2020.02
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