5
Siemens Industry, Inc.
Building Technologies Division
A6V10324662_g_en_US
201
6
-0
1
-
20
Figure 8 Line wiring
WIRING NOTES:
6. All supervised switches must be held closed and/or
open for at least 0.25 s to guarantee detection
(depending on filter time).
7. End of line device: 470
Ω
± 1 %,
½
W resistor,
delivered with the device (4x).
8. The inputs must be wired potential-free.
9. FDCIO422 is polarity insensitive. Line -6 and Line -5
can be either line of the loop.
10. Electrical ratings:
FDnet voltage maximum:
DC 32 V
Absolute maximum peak current:
1.92 mA
11. Supervised switch ratings:
Monitoring voltage:
3 V
Cable length input:
Max. 200 ft
Input shielding required
for cable lengths from:
30 ft – 200 ft
Max. C
Line to line
:
0.02 µF
Max. C
Line to shield
:
0.04 µF
Max. line size:
14 AWG
Min. line size:
18 AWG
12. The operating current may never exceed the rated
current.
13. As the outputs are not supervised by the module
use an external supervision for critical applications.
14. Choose the correct AWG size for the intended
operating current.
15. Connect incoming and outgoing shields together in
an acceptable means. Insulate shields, do not make
any connections to the device or back box.
16. Use shielded and/or twisted wire to connect the
switch wiring and keep the wiring as short as
possible.
17. Tie the switch wiring shield to the local earth
ground (at only one end, refer to Figure 9). For
multiple switches on the same input, connect
incoming and outgoing shields together in an
acceptable means. Insulate shields, do not make
any connections to the device or back box.
18. Positive and negative ground fault detected at
<25 k
Ω
for inputs 1 – 4.
·
The shield from the input must be
connected to a known good earth
ground for proper operation.
We recommend to use the earth
connector in the electrical box.
·
Conductive armored or conductive
metal conduit cables are sufficient as
shielding.
·
If a proper connection of the shield to
a known good ground cannot be
assured then unshielded cabling
should be used.
Figure 9 Input shielding
19. Relay contact ratings:
Cable length output:
Max. 200 ft
PROGRAMMABLE
RELAY CONTACTS
SEE NOTES 12, 13, 14 AND 19
FROM CONTROL PANEL
OR PREVIOUS
ADDRESSABLE DEVICE
TO NEXT
ADDRESSABLE DEVICE
END OF LINE DEVICE Rp
SEE NOTE 7
SUPERVISED
PROGRAMMABLE SWITCH
SEE NOTES 6, 8 AND 11
PROGRAMMABLE
RELAY CONTACTS
SEE NOTES 12, 13, 14 AND 19
S
E
E
N
O
T
E
S
9
,
1
0
A
N
D
1
5
