Firmware V1.41 V1
08.11.2022
104/219
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Enable of the injection valve for suction gas temperature too high
The suction gas injection is activated if the superheat exceeds a threshold value (configurable)
In order to prevent cycling of the valve, hysteresis is provided (difference downward from threshold value,
configurable)
The hot gas temperature or cylinder head temperature does not play any role here
Additional criteria for enable of the valve
HP limiter must be in good state
LP limiter must be in good state
Fast unload must not be active
At least one compressor must be in operation
Service mode must not be active
Parameter
Menu Value range
Default
Unit
Description
Fct.Rel.Out.10
→
3-3
Not used /
Desuperheat
er / Suc. gas
injec.
Not used
-
Choosing the function connected to relay output 10 (Terminals 3/4).
(Following Parameters will only be shown if Parameter "Fct.Rel.Out.10" is
set to "Suc. gas injec.")
Fct.Modb.Rel.
1 →
3-3
Not used /
Suc. gas
injec.
Not used
-
Choosing the function connected to relay output 1 of the Modbus Digital
Module.
(Following Parameters will only be shown if Parameter "Fct.Modb.Rel.1 "
is set to "Suc. gas injec.")
SGI overheat
3-3
5..40
5
K
Minimum superheat that must be present so that the valve for suction gas
injection can be enabled.
SGI hot gas
3-3
50..180, "--"
125
°C
Threshold value for the enable of the valve for suction gas injection
depending on the hot gas temperature (Pt1000 input 9, terminals 25/26).
SGI cyl. head
3-3
50..180, "--"
--
°C
Threshold value for the enable of the valve for suction gas injection
depending on the cylinder head temperature.
SGI difference
3-3
1..20
5
K
This is used for calculating the threshold value for the block of the valve
for suction gas injection. The difference is subtracted in each case from
"
SGI hot gas
" and "
SGI cyl. head
".
SGI overh.
high
3-3
5..40
25
K
Threshold value for the enable of the valve for suction gas injection
depending on too high suction gas superheat.
SGIDiffOvhHig
h
3-3
5..10
2
K
This is used for calculating the threshold value for the block of the valve
for suction gas injection. The difference is subtracted from "
SGI overh.
high
".
DesuperHter
speed
3-3
ON/OFF
OFF
-
Activation of the desuperheater control with continuous control
(only visible if Fct.Rel.Out.10 is set to compressed gas deheater)
P value
3-3
0..5.0
0.7
V/K
P-factor of the PI controller
Example:
For a control deviation of 1 K with a P value of 1, the P
component is 1 V (only visible when desuperheater speed control is ON)
I value
3-3
0..0.99
0.08
V/K.s I-factor of the PI controller.
Example:
For a control deviation of 1 K with an I-value of 0.5, the I-part
changes with 0.5 V per cycle time (1 sec.) of the controller (unit V/
K.s). (only visible when desuperheater speed control is ON)
Setp. t
ch
min
3-3
10..100
60
°C
Minimum cylinder head temperature of the LT compressors, fan speed of
the compressed gas cooler: 0%.
Setp. t
ch
max
3-3
10..120
90
°C
Maximum cylinder head temperature of the LT compressors, fan speed of
the compressed gas cooler: 100%.
Содержание VS 3015 CT
Страница 46: ...Firmware V1 41 V1 08 11 2022 46 219...
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