5.4.3
Parameter Lock
The parameter lock prevents adjustable parameters from being changed in any way by activation of
P800 Parameter Lock = Yes. Activating the parameter lock is useful when the inverter parameters
have been completely adjusted and no further changes are necessary. Amongst other things, this
parameter enables you to stop any change to the drive parameters being made on the hand-held
keypad, for example.
IMPORTANT
The parameter lock prevents parameters being written altogether. Thus the write access via the
fieldbus system is also disabled while the parameter lock is active.
5.4.4
Download Parameter Block
A number of fieldbus option pcbs offer the possibility of downloading up to 39 drive parameters
simultaneously from the higher-level automation equipment to the inverter with one single write
service. This downloading is carried out by a specific communications object, the
Download
Parameter Block.
When using the download parameter block, please bear the following in mind:
1) No factory setting should be carried out within the download parameter block.
2) Once the parameter has been set to
P801 Save = OFF, none of the parameters written subsequently
will be stored memory-resident.
3) Once the
P800 Parameter Lock = YES parameter has been activated, all parameters written
subsequently will be declined.
5.5
Parameter Adjustment Return Codes
If parameters are wrongly adjusted, various return codes are sent back from the inverter to the
parameter setting master, providing detailed information about the cause of the error. These return
codes are structured according to DIN 19245 Part 2. A distinction is made between the following
elements:
Error Class
Error Code
Additional Code
5.5.1
Error Class
The type of error is classified in more detail using the Error Class element. The error classes listed
in the following table are differentiated according to DIN 19245 Part 2.
Class (hex)
Designation
Meaning
1
vfd state
Status error of the virtual field unit
2
application reference
Error in the application program
3
definition
Definition error
4
resource
Resource error
5
service
Service error
6
access
Access error
7
ov
Error in the object list
8
other
Other error (
→
Additional Code)
Setting Inverter Parameters
5
50
MOVITRAC
®
31.. Fieldbus Unit Profile
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: [email protected]
