BEKOMAT 20, 20 FM
12
Electrical installation • Instalación eléctrica
Installation électrique • Instalação eléctricallatie
english
31
34
34
31
phase
neutral
earth/ground
4 3 2
L
N
PE
VAC - voltages
KL1
KL2
3 2 1
0V
IN1
KL5
1 2
normally closed
common
normally open
0V
external test
VDC - voltage
0V (+24 VDC)
+24 VDC (0V)
external test
--
0V
+24 VDC
±24
±24
IN1
0TV
0V
+24
KL4
KL2
6 5 4 3 2 1
3 2 1
normally closed
common
normally open
*)
BEKOMAT 20 FM
Note before wiring:
• The mains voltage must correspond
to the permissible voltage on the
type plate!
• The installation must be carried out
according to the valid regulations.
• Assign terminals as indicated!
• Electrical power must be discon-
nected prior to installation!
• Remove screws (
7
) and lift off front cover
(
18
).
• Detach cable connector (
33
) from sen-
sor PCB (
20
).
• Undo screw (
7
) of power unit housing
(
6
).
• Pull out power unit PCB (
21
).
• Unscrew cable fitting (
22-24
) and insert
cable (
31 + 34
).
• Connect cable (
31
) to terminal KL1 or
KL4 and cable (
34
) to terminal KL2 and
KL5.
• Slide power unit PCB (
21
) into power
unit housing (
6
), pull cable tight and
screw down cable fitting (
22-24
).
• Ensure that the cable connector (
33
)
leads through to the top.
• Plug cable connector (
33
) onto sensor
PCB (
20
).
• Mount front cover (
18
) as discribed on
page 11 !!
Terminal assignment for VAC de-
vices:
L = phase conductor, N = neutral conduc-
tor; PE = protective earth conductor
Note: There is no metallic isolation
between terminals KL4.1-6 or KL 5.1-2
and the condensate area.
In the case of 24 VDC operation, do not
connect
+24 VDC
to frame because the
internal housing potential of the device
is negative.
*)
When supplying several BEKOMAT
20 units simultaneosusly from a single
24 VDC source we recommend: connect
operating voltage preferably to KL4.4 +
KL4.5 instead of KL4.1 + KL4.2 while
observing the polarity.
Potential-free alarm contact
KL2.3-2 N.C.–COM:
Contact closed during malfunction or
power failure (fail-safe principle).
KL2.1-2 N.O.–COM:
Contact closed during normal opera-
tion.
External test
KL5.1-2 oder KL4.2-4 0V–IN1:
Contacts connected = test active = dis-
charge; Contacts open = test inactive
Summary of Contents for 20
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