27
Useful
Functions
Handling
Tank liquid temperature [Th4]
Room temperature
[Th3]
or
Machine temperature
[Th5]
: Oil Cooling Unit operating range
: Temperature range warning setting
5
10
15
20
25
30
35
40
45
50
5
10
15
20
25
30
35
40
45
50
(
˚C
)
(
˚C
)
5
˚C
(1)
5
˚C
(2)
(3)
(4)
Setting Additional Function
—“Temperature range warning”
Outline of the function
• As an additional function of the Oil Cooling Unit, you can set up the “
Temperature range warning
” function.
This function allows you to specify a desired temperature range within the Oil Cooling Unit operating range. When the control
temperature exceeds the preset range, the unit informs you of the “Temperature range warning” condition.
• The “Temperature range warning” function provides the following settings:
1) External output (30X relay output: ON): Turns ON/OFF the contact (66, 67) of the signal terminal block.
(See the output logic on page .)
2) Compressor forced stop—Warning:
Stops the compressor. (Indication: 1E to 5E)
Warning status will be automatically reset when preset warning reset temperature is
reached.
3) Alarm stop—“FH” alarm:
Stops the compressor. (Indication: FH)
(See “Alarm output logic” on page .)
The warning reset setting is inactive. (When the power supply is turned ON again, the
compressor restarts operation.)
∗
The above 1), 2) and 3) can be combined.
Parameter setting
To enable this function, set the corresponding parameters. You can specify up to five warning conditions with the following five
groups of parameters.
∗
For temperature range warning, the above
(1)
to
(5)
types are available. Actually, however, any combinations of these types are enabled.
The above
(1)
to
(5)
types can be simultaneously used.
(1)
When Tank liquid temperature [Th4] is 15˚C or lower, the
compressor stops. (Warning)
(2)
When Tank liquid temperature [Th4] is 35˚C or higher, the
compressor stops (FH alarm), and the 30X relay output
turns ON.
(3)
When Tank liquid temperature [Th4] is at least 5˚C lower
than the room temperature [Th3] (or machine temperature
[Th5]), the 30X relay output turns ON.
(4)
When Tank liquid temperature [Th4] is at least 5˚C higher
than the room temperature [Th3] (or machine temperature
[Th5]), the 30X relay output turns ON.
Group A: “Temperature range warning condition setting”
“Temperature range warning operation setting”
Group B: “Temperature range warning temperature setting”
“Temperature range warning reset temperature
setting”
Application of temperature range warning
Types of temperature range warning
∗
(1)
(2)
(3)
(4)
(5)
Parameter
Group A Group B
Low liquid temperature (Fixed temperature)
High liquid temperature (Fixed temperature)
Low liquid temperature (Temperature difference)
High liquid temperature (Temperature difference)
Reserve
n10
n12
n14
n16
n18
n11
n13
n15
n17
n19
33
10
PIM00132A_EN.fm 27 ページ ２００７年９月２０日 木曜日 午後３時４分
