Siemens EN 50295 Benutzerhandbuch
Siemens IK PI · 2004
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AS-Interface Slaves
Earth fault detection modules
Modules with special functions
6
■
Overview
"... Earth faults in control circuits should neither lead to uninten-
tional start-up nor to dangerous motion of a machine and they
must not hinder shutdown of the machine (EN 60204, Part 1 or
DIN VDE 0113)".
tional start-up nor to dangerous motion of a machine and they
must not hinder shutdown of the machine (EN 60204, Part 1 or
DIN VDE 0113)".
The AS-Interface earth-fault detection module has been devel-
oped to ensure that these requirements can be met more easily
in the future. This module from the SlimLine Series allows earth
faults in AS-Interface installations to be reliably detected and re-
ported.
oped to ensure that these requirements can be met more easily
in the future. This module from the SlimLine Series allows earth
faults in AS-Interface installations to be reliably detected and re-
ported.
The following earth faults are detected:
• Earth fault in AS-i "+"
• Earth fault in AS-i "-"
• Earth fault in sensors and actuators that are supplied from the
AS-Interface voltage
In each case, only one module is necessary for each AS-Inter-
face network.
face network.
■
Function
The earth fault is detected by the module, indicated via a LED
and signaled via two signaling outputs (1 = no earth fault /OK;
2 = earth fault/fault. The earth fault alarm is stored in the module.
The module can only be reset after the earth fault has been rec-
tified by switching off the AS-Interface voltage via a reset button
or via a high signal on the floating remote-reset input. The reset
button can also be used for checking correct functioning of the
module. External auxiliary voltages are not monitored for earth
faults by this module.
and signaled via two signaling outputs (1 = no earth fault /OK;
2 = earth fault/fault. The earth fault alarm is stored in the module.
The module can only be reset after the earth fault has been rec-
tified by switching off the AS-Interface voltage via a reset button
or via a high signal on the floating remote-reset input. The reset
button can also be used for checking correct functioning of the
module. External auxiliary voltages are not monitored for earth
faults by this module.
Note: The earth fault detection module is a passive module with-
out an IC. Therefore it does not require an individual address in
the AS-Interface network.
out an IC. Therefore it does not require an individual address in
the AS-Interface network.
Typical connections
N
S
A
0
_
0
0
0
9
0
a
P E
P E
5 k 6
5 k 6
2 4 V
1 / A S - i -
4 / A S - i +
2 /
3 / T
3 / R
R E S
6 / -
7 / L 2 4 +
8 / O K
9 / F A U L T
1 2 / M 2 4
1 1 / M 2 4
1 0 / M 2 4
+
+
+
R E S
R E S
+
1 / A S - i -
4 / A S - i +
-
R - R E S
O . K .
F A U L T
F A U L T
A S - i
T E S T /
R E S E T
R E S E T
M 2 4
M 2 4
M 2 4
L 2 4 +
O . K . F A U L T
A S - i -
T
A S - i +
R - R E S
-
-
-
-
R
R
O . K .
O . K .
F A U L T
F A U L T
A l t e r n a t i v e l y
A u t o m a t i c t e s t
P L C
P L C
I n p u t
I n p u t
I n p u t
I n p u t
O u t p u t
P L C
O u t p u t
O u t p u t
A S - i f a u l t
A S - i f a u l t
O u t p u t
A S - i f a u l t
A S - i f a u l t
P L C
A S - i c o n n e c t i o n
C o n n e c t i o n f o r s y s t e m e a r t h
C o n n e c t i o n f o r s y s t e m e a r t h ( f o r t e s t f u n c t i o n )
A s - i + c o n n e c t i o n
R e m o t e r e s e t i n p u t ( R - R E S )
R e m o t e r e s e t g r o u n d ( )
E x t e r n a l v o l t a g e s u p p l y f o r s i g n a l i n g o u t p u t s L 2 4 +
S i g n a l i n g o u t p u t O . K .
S i g n a l i n g o u t p u t F A U L T ( e a r t h f a u l t s i g n a l i n g )
E x t e r n a l v o l t a g e s u p p l y f o r s i g n a l i n g o u t p u t s M 2 4
N e g a t i v e c o n n e c t i o n f o r s i g n a l i n g o u t p u t M 2 4
N e g a t i v e c o n n e c t i o n f o r s i g n a l i n g o u t p u t M 2 4
C o n n e c t i o n f o r s y s t e m e a r t h
C o n n e c t i o n f o r s y s t e m e a r t h ( f o r t e s t f u n c t i o n )
A s - i + c o n n e c t i o n
R e m o t e r e s e t i n p u t ( R - R E S )
R e m o t e r e s e t g r o u n d ( )
E x t e r n a l v o l t a g e s u p p l y f o r s i g n a l i n g o u t p u t s L 2 4 +
S i g n a l i n g o u t p u t O . K .
S i g n a l i n g o u t p u t F A U L T ( e a r t h f a u l t s i g n a l i n g )
E x t e r n a l v o l t a g e s u p p l y f o r s i g n a l i n g o u t p u t s M 2 4
N e g a t i v e c o n n e c t i o n f o r s i g n a l i n g o u t p u t M 2 4
N e g a t i v e c o n n e c t i o n f o r s i g n a l i n g o u t p u t M 2 4
1
2
3
4
5
6
7
8
9
2
3
4
5
6
7
8
9
1 0
1 1
1 2
1 1
1 2
T e r m i n a l
D e s i g n a t i o n