Cable Duct and Fan Subassemblies
9-2
S7-400, M7-400 Programmable Controllers Module Specifications
A5E00069467-07
9.1
Fan Monitoring in the Fan Subassemblies
In this section, you will find out how to monitor the fans.
There is a signaling concept example at the end of the section.
LEDs
The three red LEDs are assigned to the individual fans. From left to right, these
are:
F1 – for fan 1
F2 – for fan 2
F3 – for fan 3
Fans
The fans have a redundant design. The fan subassembly continues to function
even if one fan fails.
Fan Monitoring
The function of the fans is controlled by means of speed monitoring. If the speed of
a fan drops below the limit speed of 1750 rpm, the LED assigned to it lights up. In
addition, the relay K1 drops out.
If the speed of a second fan drops below the limit speed, the LED assigned to it
lights up; in addition, the relay K2 drops out.
The following table is the function table for the fan monitoring.
Table 9-1
Function of Fan Monitoring
Fan1
Fan2
Fan3
LED F1
LED F2
LED F3
Relay K1
Relay K2
–
–
–
L
L
L
–
–
–
–
+
L
L
D
–
–
–
+
–
L
D
L
–
–
+
–
–
D
L
L
–
–
–
+
+
L
D
D
–
+
+
–
+
D
L
D
–
+
+
+
–
D
D
L
–
+
+
+
+
D
D
D
+
+
–*
–*
–*
D*
D*
D*
–*
–*
+
Fan in operation or relay picked up
–
Fan failed or relay dropped out
D
LEDs dark
L
LEDs lit
*
Power off
Содержание Simatic M7-400
Страница 10: ...Preface x S7 400 M7 400 Programmable Controllers Module Specifications A5E00069467 07 ...
Страница 122: ...Power Supply Modules 3 42 S7 400 M7 400 Programmable Controllers Module Specifications A5E00069467 07 ...
Страница 362: ...Analog Modules 5 146 S7 400 M7 400 Programmable Controllers Module Specifications A5E00069467 07 ...
Страница 384: ...Interface Modules 6 22 S7 400 M7 400 Programmable Controllers Module Specifications A5E00069467 07 ...
Страница 428: ...RS 485 Repeater 10 8 S7 400 M7 400 Programmable Controllers Module Specifications A5E00069467 07 ...
Страница 496: ...M7 400 Expansions 12 26 S7 400 M7 400 Programmable Controllers Module Specifications A5E00069467 07 ...
Страница 562: ...Interface Submodules 13 66 S7 400 M7 400 Programmable Controllers Module Specifications A5E00069467 07 ...
Страница 574: ...Parameter Sets for Signal Modules A 12 S7 400 M7 400 Programmable Controllers Module Specifications A5E00069467 07 ...
Страница 594: ...Diagnostic Data of the Signal Modules B 20 S7 400 M7 400 Programmable Controllers Module Specifications A5E00069467 07 ...
Страница 598: ...Spare Parts and Accessories C 4 S7 400 M7 400 Programmable Controllers Module Specifications A5E00069467 07 ...
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