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Siemens S5-135U/155U User Manual

Page 104

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4-38

System Manual

C79000-G8576-C199-06

The following table contains several examples.

Requirement:
Enable EN present, jumper F - R closed

Causes

LED Indication

Relay

Reaction

Fans

Air filter/

air flow

Fan1 to Fan3

Alarm

Fan

Warning

Fan

Alarm

All fans in
order

In order

All LEDs dark

Dark

-

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

One fan
failed

In order

Corresponding
LED lit

Dark

Active

5 V, 15 V, 24 V present,
faulty fan switched off, the other two
fans running at increased speed

Two fans
failed

In order

Corresponding
LEDs lit

Lit

Active

Active

Power supply switches off

All fans in
order

Dirty/halved

All LEDs
flashing

Lit

Active

Power supply switches off

Requirement:
Enable EN present, jumper F - R open

Causes

LED Indication

Relay

Reaction

Fans

Air filter/

air flow

Fan1 to Fan3

Alarm

Fan

Warning

Fan

Alarm

All fans in
order

In order

All LEDs dark

Dark

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

One fan
failed

In order

Corresponding
LED lit

Dark

Active

5 V, 15 V, 24 V present,
faulty fan switched off, the other two
fans running at increased speed

Two fans
failed

In order

Corresponding
LEDs lit

Lit

Active

Active

5 V, 15 V, 24 V present,
faulty fans switched off, one fan
running at increased speed

All fans in
order

Dirty/halved

All LEDs
flashing

Lit

Active

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

Note:
When the jumper “BB - AA” is closed the relay “Fan Alarm” is also
activated by the “output inhibit” signal (BASP via BASPA).

Fans and Fan
Monitoring

Central Controllers and Expansion Units Power Supply Units