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106  Unidrive SPM User Guide
www.controltechniques.com                               Issue Number: 3
3. Either:
• Press the red   reset button 
• Toggle the reset digital input
• Carry out a drive reset through serial communications by setting 
Pr 10.38 to 100 (ensure that Pr. xx.00 returns to 0).
7.9      Parameter access level and security
The parameter access level determines whether the user has access to 
menu 0 only or to all the advanced menus (menus 1 to 22) in addition to 
menu 0.
The User Security determines whether the access to the user is read 
only or read write.
Both the User Security and Parameter Access Level can operate 
independently of each other as shown in the table below:
RW = Read / write access        RO = Read only access
The default settings of the drive are Parameter Access Level L1 and 
user Security Open, i.e. read / write access to Menu 0 with the advanced 
menus not visible.
7.9.1     Access Level
The access level is set in Pr 0.49 and allows or prevents access to the 
advanced menu parameters.
7.9.2     Changing the Access Level
The Access Level is determined by the setting of Pr 0.49 as follows:
The Access Level can be changed through the keypad even if the User 
Security has been set.
7.9.3     User Security
The User Security, when set, prevents write access to any of the 
parameters (other than Pr. 0.49 and Pr 11.44 Access Level) in any 
menu.
Setting User Security
Enter a value between 1 and 999 in Pr 0.34 and press the   button; 
the security code has now been set to this value. In order to activate the 
security, the Access level must be set to Loc in Pr 0.49. When the drive 
is reset, the security code will have been activated and the drive returns 
to Access Level L1. The value of Pr 0.34 will return to 0 in order to hide 
the security code. At this point, the only parameter that can be changed 
by the user is the Access Level Pr 0.49.
 
Unlocking User Security
Select a read write parameter to be edited and press the   button, the 
upper display will now show CodE. Use the arrow buttons to set the 
security code and press the   button.
With the correct security code entered, the display will revert to the 
parameter selected in edit mode.
If an incorrect security code is entered the display will revert to 
parameter view mode.
To lock the User Security again, set Pr 0.49 to Loc and press the   
reset button.
Parameter 
Access Level
User Security
Menu 0 
status
Advanced 
menus status
L1 Open RW Not visible
L1 Closed RO Not visible
L2 Open RW RW
L2 Closed RO RO
Pr 0.00
Pr 0.01
Pr 0.02
Pr 0.03
Pr 0.49
Pr 0.50
Pr 1.00
Pr 1.01
Pr 1.02
Pr 1.03
Pr 1.49
Pr 1.50
Pr 22.00
Pr 22.01
Pr 22.02
Pr 22.03
Pr 22.28
Pr 22.29
............
............
............
............
............
............
............
............
L2 access selected
 -  All parameters visible
Pr 0.00
Pr 0.01
Pr 0.02
Pr 0.03
Pr 0.49
Pr 0.50
Pr 1.00
Pr 1.01
Pr 1.02
Pr 1.03
Pr 1.49
Pr 1.50
Pr 19.00
Pr 19.01
Pr 19.02
Pr 19.03
Pr 19.49
Pr 19.50
Pr 20.00
Pr 20.01
Pr 20.02
Pr 20.03
Pr 20.49
Pr 20.50
............
............
............
............
............
............
............
............
L1 access selected
 - Menu 0 only visible
Pr 21.00
Pr 21.01
Pr 21.02
Pr 21.03
Pr 21.30
Pr 21.31
String Value Effect
L1 0 Access to menu 0 only
L2 1 Access to all menus (menu 0 to menu 22)
Pr 0.00
Pr 0.01
Pr 0.02
Pr 0.03
Pr 0.50
Pr 1.00
Pr 1.01
Pr 1.02
Pr 1.03
Pr 1.49
Pr 1.50
............
............
............
............
............
............
............
............
Pr 0.00
Pr 0.01
Pr 0.02
Pr 0.03
Pr 0.49
Pr 0.50
Pr 1.00
Pr 1.01
Pr 1.02
Pr 1.03
Pr 1.49
Pr 1.50
............
............
............
............
............
............
............
............
User security open
 -  All parameters: Read / Write access
User security closed
0.49 11.44
 - All parameters: Read Only access
Pr 22.00
Pr 22.01
Pr 22.02
Pr 22.03
Pr 22.28
Pr 22.29
Pr 0.49