Omron S8AS, Руководство пользователя

Страница: 24 / 146

6
Overview of Features and Functions
Section 1-1
Tripping Functions Using External Signals
Branch outputs can be forcibly cut off by turning ON the External Tripping
Input (TRG).
• Tripping using the External Tripping Input can be enabled or disabled
independently for each branch output. Refer to Tripping Input Trigger Set-
ting: TRG (Trigger) on page 68.
• The External Tripping Input directly cuts off a branch output's DC circuit,
so it acts even faster than cutting off the output by turning OFF the normal
AC power supply.
• When a shutdown sequence has been set, this function can be used to
set a time lag for the branch output cutoff. (For details, refer to 2-6 Shut-
down Sequence Function .)
• The tripping input type can be set. (Refer to 2-7 External Tripping Input
Function )
• EGE: Output cut off when the tripping input changes from OFF to ON.
• LVL: Output cut off when the tripping input changes from OFF to ON
and connected when tripping input changes from ON to OFF.
Additional Functions
Startup Sequence
Function A delay can be set for the connection of the branch outputs. When you want to
apply a startup delay to the branch output, it is not necessary to construct an
external sequence circuit. The inrush current can be suppressed by applying
a delay and the Power Supply Unit's load can be reduced. (For details, refer to
2-5 Startup Sequence Function .)
Shutdown Sequence
Function The branch outputs' cutoff can be delayed. When you want to apply a shut-
down delay to the branch output, it is not necessary to construct an external
sequence circuit. (For details, refer to
2-6 Shutdown Sequence Function .)
Protecting Parameter
Settings (Protection Level
Settings) The Protection Level can be set to restrict access to the parameters. Three
levels, levels 0, 1, and 2, are available. This function can be used to prevent
parameters from being changed or deleted inadvertently.
The default setting is protection level 1. (For details, refer to 4-3 Changing the
Protection Level .)
Note The read/write access for models that do not support parameter
changes (S8AS-24006N/48008N) cannot be changed regardless
of the protection level.
Protection level Restrictions
0 There are no restrictions on reading and changing the parameter
settings.
1 Permits only reading and changing of the output voltage, current,
internal temperature, and maintenance forecast monitor parame-
ters.
2 Permits only reading of the output voltage, current, internal tem-
perature, and maintenance forecast monitor parameters.