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7.9.8.2
9_9450 03USE
7
Initial Start-up
7.9
Configuring the machine for master control
2. Press «UP» repeatedly until
3. Press «Enter» to switch into setting mode.
Local operation display flashes.
The
8 9 p s i
5.2.3 Load control
Local mode pA
·········
Remote mode : pA
Key remote : ☐
·········
▶1 pA/pB Clock
4. Use «UP» or «DOWN» to set pA/pB Clock or pA/pB Cycle operating mode.
5. Press «Enter» to accept the operating mode.
The actual operating mode is displayed.
Configuring the master control without an electrical connection
Requirement:
A high-capacity machine with SIGMA CONTROL 2 (e.g., BSD) is to work as base load machine. A
second machine (e.g., SK) without SIGMA CONTROL 2 is to supply air in times of low demand.
Proposal:
■
Select the system setpoint pressures pA and pB of the BSD machine for the switching point of
the SK machine's pressure switch to be in between. When pB is activated for the periods of
low demand, the SK machine automatically functions as the base load machine.
■
Set the required values for a clock program on SIGMA CONTROL 2 .
■
Select local mode pA/pB SC2 Clk.
■
Activate the compressor timer
Function diagram:
Time period t1–t7: high compressed air demand Time period t8–t14: low compressed air demand
t1
Air demand rises.
System pressure pNloc drops.
t2
BSD switches to LOAD.
t3:
System setpoint pressure pA reached.
BSD switches to IDLE.
t4:
BSD switches to LOAD.
Air demand not covered.
t5:
SK also switches to LOAD.
System pressure pNloc starts to rise.
Service manual
Controller
SIGMA CONTROL 2 SCREW FLUID 1.1.3
Local mode is displayed as the active line.
1 7 6 ° F
Menu
Active line, current local operating mode
t8:
Air demand rises.
System pressure pNloc drops.
t9:
SK switches to LOAD.
t10:
System setpoint pressure pB reached.
SK switches to IDLE.
t11:
BSD switches to LOAD.
Air demand not covered.
t12:
SK switches to LOAD.
System pressure pNloc starts to rise.
115
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