10 Fault Recognition and Rectification
10.1 Basic information
The following tables are intended to assist in locating the causes of faults.
There are three types of fault indicated in the SIGMA CONTROL 2:
■ Fault with the machine:
The
red LED
flashes, the machine shuts down: see chapters 10.2 and 10.5.
■ Fault with the controller:
The machine shuts down, see chapter 10.6.
■ Warning:
The
yellow LED
illuminates, the machine does not shut down: see chapter 10.3.
The messages valid for your machine are dependent on the controller and the individual equip‐
ment.
1. Do not attempt any fault rectification measures other than those specified in this operating
manual!
2. In all other cases:
Arrange for the fault to be rectified by an authorized KAESER service representative.
10.2 Interpreting fault messages
If an input signal is classified as a fault, the controller will display the fault upon receiving the
signal.
Consequences:
■ The
red LED
flashes:
■ The controller shuts the machine down.
Fault messages are indicated with the letter A.
Messages are not numbered consecutively.
In this table, “%d” represents a variable value, e.g. a number, period of time or I/O address.
1)
Messages 0073-0078 and 0081-0098 are customer-specific.
Add in the meaning for the message text you have defined (see chapter 8.11).
Message Possible cause Remedy
0001 A
Direction of rotation
Compressor motor turning in
wrong direction.
Reverse supply lines L1 and L2.
0002 A
Motor temperature ⇞
Compressor motor too hot. Keep ambient conditions within speci‐
fied limits.
Check the cooling air supply.
Clean the motor.
0003 A
pRV ⇞
Safety relief valve actuating
pressure on oil separator tank
exceeded.
Replace the safety relief valve.
10 Fault Recognition and Rectification
10.1 Basic information
No.: 9_9450 13 USE
User Manual Controller
SIGMA CONTROL 2 SCREW FLUID ≥5.1.2
197
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