<11.  MAINTENANCE>
11-5
IM 01E30D01-01EN
11.3  Setting of Switches
11.3.1  Setting of Burnout Switch
The burnout function sets the direction of current 
output in situations during occurring the system 
alarm. Upon shipment from the manufacturing 
plant, the burnout direction is set to High (21.6 mA 
or more); however, in cases where the optional 
codeC1hasbeenspecied,theoutputdirection
will be set to Low (3.2 mA or less).
Modicationoftheburnoutdirectionmustbecarried
outusingthesettingswitchfromtheamplier’s
board (Switch 2) (Read Figure 11.3).
Table 11.3  Output Setting Pins for Burnout
Position of 
Pin
Burnout 
Direction
Burnout 
Output
Remarks
L          H
High
21.6 mA
or more
Set to High before 
shipment
L          H
Low
3.2 mA
or less
Set to Low for optional 
code C1
NOTE
Ontheamplier’sboard,theburnoutsetting
switch (Switch 2) and the write protect switch 
(Switch 1) are located adjacent to each other. 
Accordingly, special care should be taken when 
making switch settings.
Switch 2
Switch 1
EnableProtect
L H
1 2
ON
F1108.ai
BO 
← 
Burnout setting switch
WR 
← 
Write protect setting switch
Figure11.3 SwitchConguration
11.3.2  Setting of Write Protect Switch
By setting the write protect function to “Protect” it is 
possible to prevent the overwriting of parameters. 
Write protection can be carried out using either the 
hardwareswitchontheamplierboard(Switch1)or
software parameter settings. If either of these items 
is set to “Protect,” the overwriting of parameters will 
be prohibited.
NOTE
If the hardware switch is set to “Protect,” it 
will not be possible to overwrite parameters; 
furthermore, this condition will be maintained 
until the switch is set to “Enable.”
For more details regarding usage of the write 
protect function and the software’s parameter 
switches, read Chapter 6.