DUAL
In the DUAL control mode, the machine is switched back and forth between LOAD and IDLEto main‐
tain pressure between the preset minimum and maximum values. When maximum pressure is
reached, the machine switches to IDLE. When the preset
idling time has elapsed, the machine
switches to STANDSTILL.
The
idling time is fixed in SIGMA CONTROL BASIC.
QUADRO
In the QUADRO mode, the controller operates as in the DUAL mode during periods of high air demand
by switching between LOAD and IDLE, but during periods of low air demand it switches directly to
STANDSTILL.
This mode of control requires two pre-set time periods: the
running time and the idle/standstill time.
The
idling/standstill time and the running time are set in SIGMA CONTROL BASIC.
MODULATINGcontrol
MODULATINGcontrol is based on the DUALcontrol mode. The difference to DUAL is that the air
delivery is continuously varied within the control range of the machine.
This control mode is not available on variable speed machines with a frequency-controlled
drive (SFC).
Compressed Air Demand
Operating modes
rises
MODULATING
LOAD
falls
MODULATING
IDLE
STANDSTILL
Tab. 31 Operating modes under MODULATING control
4.7 Safety Devices
The following safety devices are provided and may not be modified in any way:
■ EMERGENCY STOP button:
The EMERGENCY STOP button shuts down the machine immediately. The motor remains stop‐
ped. The pressure system is vented.
■ Pressure relief valve:
The pressure relief valve protects the machine from excessive pressure. It is preset at the factory.
■ Door interlock switches:
The machine will stop automatically if a door or panel fitted with these safety interlocks is opened
or removed.
■ Enclosures and guards for moving parts and electrical connections:
These protect against accidental contact.
4
Design and Function
4.7
Safety Devices
9_6919 04 E
Service Manual Screw Compressor
SX SIGMA CONTROL BASIC
25
Option C1
Содержание SX
Страница 2: ...Original instructions KKW SSX 1 04 en SBA SCHRAUBEN SCB...
Страница 6: ...Contents iv Service Manual Screw Compressor SX SIGMA CONTROL BASIC 9_6919 04 E...
Страница 8: ...List of Illustrations vi Service Manual Screw Compressor SX SIGMA CONTROL BASIC 9_6919 04 E...
Страница 10: ...List of Tables viii Service Manual Screw Compressor SX SIGMA CONTROL BASIC 9_6919 04 E...
Страница 100: ...13 Annex 13 3 Dimensional Drawing 90 Service Manual Screw Compressor SX SIGMA CONTROL BASIC 9_6919 04 E...
Страница 101: ...13 Annex 13 3 Dimensional Drawing 9_6919 04 E Service Manual Screw Compressor SX SIGMA CONTROL BASIC 91...
Страница 103: ...13 Annex 13 4 Electrical Diagram 9_6919 04 E Service Manual Screw Compressor SX SIGMA CONTROL BASIC 93...
Страница 104: ...13 Annex 13 4 Electrical Diagram 94 Service Manual Screw Compressor SX SIGMA CONTROL BASIC 9_6919 04 E...
Страница 105: ...13 Annex 13 4 Electrical Diagram 9_6919 04 E Service Manual Screw Compressor SX SIGMA CONTROL BASIC 95...
Страница 106: ...13 Annex 13 4 Electrical Diagram 96 Service Manual Screw Compressor SX SIGMA CONTROL BASIC 9_6919 04 E...
Страница 107: ...13 Annex 13 4 Electrical Diagram 9_6919 04 E Service Manual Screw Compressor SX SIGMA CONTROL BASIC 97...
Страница 108: ...13 Annex 13 4 Electrical Diagram 98 Service Manual Screw Compressor SX SIGMA CONTROL BASIC 9_6919 04 E...
Страница 109: ...13 Annex 13 4 Electrical Diagram 9_6919 04 E Service Manual Screw Compressor SX SIGMA CONTROL BASIC 99...
Страница 110: ...13 Annex 13 4 Electrical Diagram 100 Service Manual Screw Compressor SX SIGMA CONTROL BASIC 9_6919 04 E...
Страница 111: ...13 Annex 13 4 Electrical Diagram 9_6919 04 E Service Manual Screw Compressor SX SIGMA CONTROL BASIC 101...
Страница 112: ...13 Annex 13 4 Electrical Diagram 102 Service Manual Screw Compressor SX SIGMA CONTROL BASIC 9_6919 04 E...
Страница 113: ...13 Annex 13 4 Electrical Diagram 9_6919 04 E Service Manual Screw Compressor SX SIGMA CONTROL BASIC 103...
Страница 114: ...13 Annex 13 4 Electrical Diagram 104 Service Manual Screw Compressor SX SIGMA CONTROL BASIC 9_6919 04 E...
Страница 115: ...13 Annex 13 4 Electrical Diagram 9_6919 04 E Service Manual Screw Compressor SX SIGMA CONTROL BASIC 105...
Страница 116: ...13 Annex 13 4 Electrical Diagram 106 Service Manual Screw Compressor SX SIGMA CONTROL BASIC 9_6919 04 E...
Страница 117: ...13 Annex 13 4 Electrical Diagram 9_6919 04 E Service Manual Screw Compressor SX SIGMA CONTROL BASIC 107...
Страница 118: ...13 Annex 13 4 Electrical Diagram 108 Service Manual Screw Compressor SX SIGMA CONTROL BASIC 9_6919 04 E...
Страница 119: ...13 Annex 13 4 Electrical Diagram 9_6919 04 E Service Manual Screw Compressor SX SIGMA CONTROL BASIC 109...
Страница 120: ...13 Annex 13 4 Electrical Diagram 110 Service Manual Screw Compressor SX SIGMA CONTROL BASIC 9_6919 04 E...
Страница 121: ...13 Annex 13 4 Electrical Diagram 9_6919 04 E Service Manual Screw Compressor SX SIGMA CONTROL BASIC 111...
Страница 122: ...13 Annex 13 4 Electrical Diagram 112 Service Manual Screw Compressor SX SIGMA CONTROL BASIC 9_6919 04 E...