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Men
u
Parameter
Description
Value
range
Defa
ult
Uni
t
3-3
Inj.Temp
Limit value of the cylinder head temperature at which injection is performed or the valve
is operated in normal operation.
---,
80..140
140
°C
3-3
Inj.Temp.H
R
Limit value
of the cylinder head temperature at which injection is performed or the valve
is operated in HRC operation.
---,
90..150
140
°C
3-3
Dif.Inj.Tem
p
Hysteresis for switching off the suction gas injection
valve. The limit value for switching
off the suction gas injection is calculated with this:
Limit value = "Inj.Temp" - "Dif.Inj.Temp" or
Limit value = "Inj.Temp.HR" - "Dif.Inj.Temp"
5..20
20
K
3-3
Min.Super
ht.-C XX
Minimum permissible superheat on the case side. The valve for suction gas injection is
switched off if the minimum superheat undercuts this limit value
5..15
4
K
3-3
Min.Super
ht.-P XX
Minimum permissible superheat on the pack side. The valve for suction gas injection is
switched off if the minimum superheat undercuts this limit value.
2..15
4
K
3-3
Dif.Superh
eat XK
Hysteresis for switching on the suction gas injection
valve.
Limit value = "Min.Superht.-C" + "Dif.Superheat" or
Limit value = "Min.Superht.-P" + "Dif.Superheat"
Note: This parameter is used for the two functions "hot gas bypass" and "suction gas
injection".
1..10
2
K
5.12 Monitoring
In addition to control and regulation functions, the following monitoring functions are integrated in the controller:
•
Safety chain
- Compressor high pressure limiter
- Compressor low pressure limiter
- Compressor oil/HP / oil/HP pressure switch
- Compressor motor overload cut-out
•
Compressor cylinder head temperature
•
Low pressure
•
High pressure
•
Medium pressure
•
Fan motor overload cut-out
•
Fan speed controller
•
Compressor speed controller
•
External alarm
•
Switching frequency
•
Refrigerant
•
Fast unload / external OFF
•
Rupture disk
5.12.1 Safety chain
For reasons of redundancy of the monitoring system, precautionary measures, in addition to the monitoring
functions of the VS 3010 C, have been taken to disable all or individual compressors of a pack under critical
operating conditions. The switching contacts used for this due to the type of wiring of the system are prioritised
below in ascending order:
Summary of Contents for VS 3015 C
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