9 Operation
9.1 Switching the machine on and off
Always switch the machine on with the «ON» key and off with the «OFF» key.
Precondition A power supply isolating device has been installed by the user.
Fig. 33 Switching the compressed air station on and off
7
«ON» key
8
«OFF» key
13
«Load/Idle» toggle key
14
IDLE LED
15
LOAD LED
16
Voltage applied to controller LED
9.1.1 Switching on
Precondition No personnel are working on the machine.
All maintenance doors and removable panels are in place and secured.
The ambient conditions as described in Chapter "Installation and Operating Conditions" are met
1. Switch on the user's power supply isolating device.
2. Switch on the machine and wait for SIGMA CONTROL 2 to start.
The
voltage applied to controller LED
16
lights green.
3. Press the «On»
7
key.
The
On LED lights green.
The minimum run time for limiting the starting frequency is active in the Remote control and Local
operating modes. The starting frequency is used only by star-delta machines.
Star period
Motor starts per hour
<10 s
6
≥10 s
4
In screw blowers plus 2 minutes pause between OFF and ON
Tab. 85 Maximum permissible number of motor starts per hour
9
Operation
9.1
Switching the machine on and off
136
Service Manual Controller
SIGMA CONTROL 2 BLOWER ≥ 4.0.X
No.: 901700 14 E
