8.4.2 Setting pressure parameters
8.4.2.1 Setting the system setpoint pressure: pA and pB
The pressure parameters can only be set within certain limits:
Rated machine pressure ≥ SP: pA /pB ≥ Min. cut-in pressure* + switching differential
Tab. 54 Setting limits for the network nominal pressure (* Cut-in pressure min)
The machine switches to LOAD under the following condition:
System pressure ≤ SP: pA /pB + switching differential
Tab. 55 Pressure condition for LOAD
The machine switches to IDLE under the following conditions
12)
:
System pressure = System setpoint pressure
2)
Tab. 56
Pressure conditions for IDLE
12)
2)
For machines with frequency converter (SFC): System pressure = System setpoint pressure +
ΔpFC
12)
Not for AIRTOWER
Precondition Password access level 2 is activated.
1. Open the 5.2.2
<Configuration – Pressure control – Pressure settings>
menu.
2. Use «Up» or «Down» to select the
pASP
line.
8 8 p s i 0 8 : 1 5 A M 1 7 6 ° F
Header
5.2.2 Pressure settings
Menu
Setpoint pressure
pA SP: 116psi ¦ SD: −7.3psi
Active line
pB SP: 109psi ¦ SD: −5.8psi
·········
System pressure low ☐
↓ < 72.5psi ¦ SD: 7.2psi
3. Press «Enter».
The setting mode is active.
4. Use «Up» or «Down» to set the
pA SP
value.
5. Press «Enter».
The setting is applied.
6. Set the
SD
switching differential in the same manner.
7. If necessary, adjust the value for the
pB SP
and the
SD
switching differential in the same way.
8. Press «Escape» repeatedly to return to the main menu.
Result The parameters for the system setpoint pressure
pA
and
pB
are set.
8 Initial Start-up
8.4 Adjusting the pressure parameters of the machine
88
User Manual Controller
SIGMA CONTROL 2 SCREW FLUID ≥5.1.2 No.: 9_9450 13 USE
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