Siemens S5-135U/155U - Manual (Page 104)

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