Ulvac GI-M2, Instruction Manual

Page: 43 / 101

37
9.2. Set Point
9.2.1. What is the set point?
The set point function outputs a signal of whether a pressure being measured has come
down below a certain pressure value.
The operating state can be checked by the lighting of the LED on the front panel or in
the form of relay contact from the external I/O connector or by reading the status when
the communication (RS-232C) is used.
The relay rated load of the setpoint output is [AC : 125 V
MAX
, 0.5 A
MAX
, DC : 24 V
MAX
,
1 A
MAX
].
9.2.2. Setting of set point
In the case of 3-digits display, the set point value is entered in the form of .
×
10 .
In the case of 2-digits display, the set point value is entered in the form of .
×
10 .
The settable values are as follows:
GI-M2 GI-D7 GI-N8
Setting
range
９．９９×１０
－０
～
５．００×１０ －８
WIT selection
６．７９×１０
－１
～
１．００×１０
－５
WIB selection
２．００×１０ －２ ～
１．００×１０
－６
６．６０×１０
－１
～
４．００×１０ －９
When the input of an invalid value, the value is not updated. [
Ｅｒｒ
.
１２
] is displayed
on the segment indicator only in the front panel setting.
The value entered last will be saved from front panel or RS-232C.
9.2.3. Internal processing
When measurement pressure was less than setting pressure.
Set point ON
：
setting pressure
≧
measured pressure value
9.2.4. Set point activating conditions
The set point action is activated only when the filament is ON and the emission current
is normal. If the emission current is not normal, that is, [Em. Valid NG], When
measurement pressure value was less than a set point, it won’t be activated.
9.2.5. Set point action when range hold is active
The set point action is active in all measurable pressure ranges even when used in the
range hold mode.