KAESER BSD 50 User Manual

Message Possible cause Remedy
Sigma Control T⇞ The maximum permissible
SIGMA CONTROL housing tempera‐
ture has been exceeded.
Keep ambient conditions within speci‐
fied limits.
Control cabinet:
Check filter mats and fan.
softstart Fault in the soft start equipment. Call KAESER Service.
start T⇟ Airend discharge temperature (ADT)
too low.
Ambient temperature <+37°F
Keep ambient conditions within speci‐
fied limits.
T-switch Customer specific:
no details possible.
–
ADT dT/dt ⇞ The rate of rise of the airend discharge
temperature (ADT) is too fast.
Check the cooling oil level.
Call KAESER Service.
ADT ⇞ Maximum permissible airend discharge
temperature (ADT) exceeded.
Keep ambient conditions within speci‐
fied limits.
Clean the cooler.
Check the cooling oil level.
access doors Door open / interlocked panel removed
while the machine is running.
Fit and secure all panels and close ac‐
cess doors.
Tab. 45 Alarm messages and measures
9.3 Warning messages (yellow LED lights)
Message Possible cause Remedy
blowoff prot. ↑ The pressure relief valve's activat‐
ing pressure will soon be reached.
Change the oil separator cartridge.
Open the shut-off valve in the venting line.
bus alarm The bus link from the Profibus DP
interface is interrupted.
Check bus highway and plug.
PD T↑ Compressed air discharge temper‐
ature too high.
Clean the cooler.
Check the cooling oil level.
PD T↓ Package discharge (PD) tempera‐
ture too low.
Call KAESER Service.
DO test The 'controller outputs' test function
is activated.
Stop the 'controller output' mode.
restart inhibit Too frequent manual on and off
switching.
Do not exceed the maximum number of mo‐
tor switchings per hour when manual on/off
switching.
elect. equip. h⇞ The maintenance interval for check‐
ing electrical equipment and wiring
has expired.
Carry out the check and reset the mainte‐
nance interval counter.
error: FEPROM Internal controller memory error. Call KAESER Service.
error: RAM Internal RAM defective. Call KAESER Service.
9 Fault Recognition and Rectification
9.3 Warning messages (yellow LED lights)
56
Service Manual Screw Compressor
BSD 9_5708 08 USE

KAESER BSD 50 Specifications

General

Model	BSD 50
Category	Rotary Screw Compressor
Motor Power	30 kW
Noise Level	69 dB(A)
Drive Type	Direct