Central Controllers and Expansion Units Power Supply Units

Fans and Fan

The following table contains several examples.

Monitoring

Requirement:

 

 

Enable EN present, jumper F - R closed

Causes

Fans

Air filter/

air flow

LED Indication

Fan1 to Fan3

Alarm

Relay

Fan

Warning

Reaction

Fan

Alarm

All fans in order

One fan failed

Two fans failed

All fans in order

In order

All LEDs dark

Dark

 

In order

Corresponding

Dark

 

 

 

LED lit

 

 

In order

Corresponding

Lit

 

 

 

LEDs lit

 

 

Dirty/halved

All LEDs

Lit

 

 

flashing

 

 

 

 

 

 

-

Active

Active

±

±5 V, 15 V, 24 V present, fans 1 to 3 running

±5 V, 15 V, 24 V present,

faulty fan switched off, the other two fans running at increased speed

Active

Power supply switches off

Active

Power supply switches off

 

 

Causes

Fans

Air filter/

air flow

Requirement:

Enable EN present, jumper F - R open

LED Indication

 

Relay

 

 

 

 

 

Fan

 

Fan

 

 

 

 

 

Fan1 to Fan3

Alarm

Warning

 

Alarm

 

 

 

 

 

 

 

Reaction

All fans in order

One fan failed

Two fans failed

In order

In order

In order

All LEDs dark Dark

Corresponding Dark LED lit

Corresponding Lit LEDs lit

±

Active

Active

±5 V, 15 V, 24 V present, fans 1 to 3 running

±5 V, 15 V, 24 V present,

faulty fan switched off, the other two fans running at increased speed

Active 5 V, 15 V, 24 V present,

faulty fans switched off, one fan

running at increased speed

All fans in

Dirty/halved

All LEDs

Lit

order

 

flashing

 

 

 

 

 

±

Active 5 V, 15 V, 24 V present,

fans 1 to 3 running

Note:

When the jumper ªBB - AAº is closed the relay ªFan Alarmº is also activated by the ªoutput inhibitº signal (BASP via BASPA).

4-38

System Manual

C79000-G8576-C199-06

Page 104
Image 104
Siemens S5-135U/155U appendix Fans and Fan, Following table contains several examples, Requirement