60
ENG
pRack +0300025EN rel. 1.3 - 17.12.2015
Mask index Display description Description Default UOM Values
Caf10
Devices rotation type Type of rotation FIFO --- ------
FIFO
LIFO
TIME
CUSTOM
Caf11
Dev. unload sequence Unloader sequence in relation to compressor activation (C=compressor,
p=unloader)
CpppCppp --- --------
CCpppppp
CpppCppp
Caf12
Load up time Delay between diff erent compressor starts 10 s 0…999
Load down time Delay between diff erent compressor stops 0 s 0…999
Unloader delay Delay between stages 0 s 0…999
Caf13
Custom rotation
Switch ON order
Order of switch ON for compressor custom rotation 1 --- 1…16
Caf14
Custom rotation
Switch OFF order
Order of switch OFF for compressor custom rotation 1 --- 1…16
Caf15
Modulate speed device Compressor driver type (line 1) NONE --- NONE
INVERTER
DIGITAL SCROLL
CONTINUOUS SCREW
Caf16
Min. frequency Minimum inverter frequency 30 Hz 0…150
Max. frequency Maximum inverter frequency 60 Hz 0…150
Caf17
Min on time Compressor controlled by inverter minimum ON time (line 1) 30 s 0…999
Min off time Compressor controlled by inverter minimum OFF time (line 1) 60 s 0…999
Min time to start same
compressor
Compressor controlled by inverter minimum time between same com-
pressor starts (line 1)
180 s 0…999
Caf18
Digital Scroll¥ comp.
valve regulation
Digital Scroll¥ comp. valve control type (line 1) OPTIMISED
CONTROL
--- OPTIMISED CONTROL
VARIABLE CYCLE TIME
FIXED CYCLE TIME
Cycle time Cycle time value (line 1) 13 s 12…20
Caf19
Oil dilution Digital Scroll¥, enable oil temperature alarm (line 1) ENABLE --- DISABLE/ENABLE
Disch.temper. Digital Scroll¥, enable discharge temperature alarm (line 1) ENABLE --- DISABLE/ENABLE
Caf20
Compr.Manufacturer Compressor manufacturer for screw compressors GENERIC --- GENERIC / BITZER
REFCOMP / HANBELL
Compressor series Compressor series …(***) --- …(***)
Caf21
Number of valves Number of valves used for capacity control 3 --- 1…4
Stages confi guration Stage confi guration for screw compressor 1 25/50/75
/100
% 100; 50/100; 50/75/100;
25/50/75/100; 33/66/100
Caf22
Common time Enable common delay time (from one stage to the following) for screw
compressor 1
ENABLE --- DISABLE/ENABLE
Common time/time
between steps
Common delay time (from one stage and the following) for screw
compressor 1
0 s 0…999
From…to… Minimum compressor delay time in order to reach each capacity stage
from previous for screw compressor 1
… s 0…999
Caf23 Intermittent valve time Intermittent on/off time for capacity control valves for screw compressor 1 10 s 0…99
Caf24
Valve conf. Confi guration of the behaviour of the valves during start/stop and stages
for screw compressor 1
… --- O (ON)
X (OFF)
I (Intermittent)
P (Pulsing)
Caf25
Limit comp.permanence
at min power
Enable time limit at minimum capacity for screw compressor 1 ENABLE --- DISABLE
ENABLE
Max.perman.time Max time for compressor operation at minimum capacity for screw
compressor 1
60 s 0…9999
Limitat.on for Time to return to minimum after the compressor was forced to second
stage after staying at minimum for max. time for screw compressor 1
0 s 0…9999
Caf26
Min.output power Minimum compressor capacity in case of high capacity range (usually
25%), only for continuous compressors
25 % 0…100
Caf27
Compressor start-up
phase duration
Start-up phase time (after electric start-up) 10 s 0…999
Maximun time to reach
-maximum power
Maximum time in order to reach maximum compressor capacity (con-
tinuous capacity control)
120 s 0…999
-minimum power Minimum time in order to reach minimum compressor capacity (con-
tinuous capacity control)
120 s 0…999
Caf28
Intermittent Intermittent on/off time for capacity control valves 10 s 0…99
Pulse period Pulsing period for valves (for continuous compressors) 3 s 1…10
Min.Puls.Incr. Minimum pulse time for increase capacity (valves control) 0,5 s 0.0…9,9
Max.Puls.Incr. Maximum pulse time for increase capacity (valves control) 1,0 s 0.0…9,9
Min.Puls.Decr. Minimum pulse time for decrease capacity (valves control) 0,5 s 0.0…9,9
Max.Puls.Decr. Maximum pulse time for decrease capacity (valves control) 1,0 s 0.0…9,9
Caf29
Valve conf. Confi guration of the behaviour of the valves during start/stop, incr.min%
to 100%, decr.100% to min%, standby, decr.100% to 50%
… --- O (ON)
X (OFF)
I (Intermittent)
P (Pulsing)
Caf36
Number of valves Number of control capacity valves for screw compressor 2 3 --- 1…4
Stages confi guration Stage confi guration for screw compressor 2 25/50/
75/100
% 100; 50/100; 50/75/100;
25/50/75/100; 33/66/100
…… … ………
Caf90
Diff erent sizes Enable compressors of diff erent sizes (line 1) NO --- NO / YES
Diff erent number of
valves
Enable compressor capacity control (line 1) NO --- NO / YES
Caf91
S1 Enable size and size for compressor group 1 (line 1) YES
10.0
---
kW
NO / YES
0.0…500.0
…… ………
S4 Enable size and size for compressor group 4 (line 1) NO ---
---
kW
---
NO / YES
0.0…500.0
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