7.1.1 Muting function with four muting sensors and time-out
e.g. high-bay protection, pallet conveyor systems
Connection diagram for muting function with four muting sensors and time-out
FIESSLER
E L E K T R O N I K
22
Function: During bridging, the ULVT safety light barrier can be
interrupted without the alarm being activated and/or the entire
system being switched off.
Bridging continues for as long as either the contacts of the two
muting sensors LS 1A and LS 2A or LS 1B and LS 2B, or all
four, are open, but for no longer than the set time.
If the ULVT safety light barrier is interrupted and not bridged at
the same time by the muting sensors, the alarm is activated via
contact B-11 (potential-free break contact) and the system
switched off via the output contacts 20-21 and 16-17. This
enables differentiation between man and material flow.
A restart and deactivation of the alarm is possible by pressing
the start button when the ULVT safety light barrier is free.
Before pressing the key start button, it must be
ensured that no person is located within the
hazardous area.
For safety reasons, the minus and plus lines
must be routed as shown in the connection
diagram. The cabling for muting channels 1 (LS
1A/B) and 2 (LS 2A/B) must be implemented
separately.
22
8
1
2
3
1
2
3
4
5
6
7
k1
k2
X
X
X
X
X
X
M 2,0 A
12
19
8
22
C
8
12
6
6
12
7
6
12
14
k1
k2
K2
15
13
M 2,0 A
4
3
6
-
7
+
2
3
+
2
1
5
1
-
+
+
+
+
-
-
-
-
K1
M 2,0 A
M 2,0 A
16
13
7
A
D
14
2
5
4
E
3
18
9
15
F
10 11 B 17
21 20
6
8
19
12
C
12
22
1
FIESSLER
E L E K T R O N I K
Nr./Baujahr
Ansprechzeit
Temp.
Schutzart
Versorgung
Kontaktbel.
Kastellstr.9 73734 Esslingen
Tel. 0711/ 91 96 97-0
LSUW N1 Muting K
No./year of construction
response time
t
emp.
enclosure rating
supply voltage
contact max.
No./année de fabrication
temps de réponse
temp.
degré de protection
tension d'alimentation
charge contact maxi.
Netz
tension
power
LS Frei
BS libre
LC free
output free
sortie libre
Ausgang frei
interdiction de redémarrage
restart interlock
Wiederanlaufsperre
LS unterbrochen
BS interrompue
LC interrupted
Made in Germany
TÜV Rheinland
AA
AA
AA
TÜV Rheinland
LS gebrückt
Achtung
Vor Abziehen der Klemmleiste Netzspannung abschalten!
Attention
Turn off the supply voltage !
Attention
Couper l'alimentation !
L1
230VAC
N
L1
115VAC
LC muted BS desactiveé
24VDC
Schaltgerät BWS Typ 4
Switching unit ESPE Type 4
Boîtier de commande ESPS Type 4
0 V DC
OSSD2
OSSD1
EDM
Start
.................................
25 mS
-10… + 55 °C
IP 20
230 VAC -15% +10 %, 50Hz
2 A, 250 VAC
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LS 1 A LS 2A
LS 1B LS 2B
LSUW
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AA
AA
A
AA
AA
Transportband
LSUW
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AA
AA
A
AA
AA
Transportband
Alarm
LS 1 A LS 2A
LS 1B LS 2B
7 Additional functions with safety switchgears
- Muting
LSUW N1 Muting K switchgear
ULVT
BA - ULVT
ULVTS Transmitter
ULVTE Receiver
Set operating mode:
Without contactor check
Without restart interlock
(both functions are
performed by switchgear)
antivalent outputs
Muting-Sensor
LS 1B
in muting status
contacts open
Muting sensor
LS 2B
in muting status
contacts open
Muting-Sensor
LS 2A
in muting status
contacts open
Voltage depending on type of
contactor, muting lamp and
alarm signal generator
L1 = 230 V AC
or
24 V DC
Contactor
monitoring
Start button
X = For
interruption
of
hazardous
movement
Muting
lamp
Alarm
Spark arresting
sections
N
or
0V
24V DC
0V
Muting-Sensor
LS 1A
in muting status
contacts open
Cable routing: Separately
from power lines. The cable
routing for the contactor
check (terminals D & 22)
must prevent short-circuiting
of wires.
If the sum of the currents to
terminals B, 10, 17 & 21
exceeds 2A, separate fuse
protection of M 2.0 A must
be provided for the contacts.
The hazardous movement
must only be activated via
output contacts 16-17 and
20-21.
The output contacts are
potential-free, monitored,
guided make contacts are
must be loaded with max. 2
A/250 VAC or 60 VDC, 30
W.
With inductive load, the load
(not the contacts) is to be
switched at the same time
as the spark arresting
sections (e.g. 0.22 uF,
220
Ω
.
The contact B-11 serves as
an alarm path and is not
permitted to activate the
hazardous closing
movement.
When performing electric
welding work on the
machine, the terminal strip
of the switchgear is to be
removed, otherwise the
vagrant welding currents
may cause destruction of
the installed electronics.
Optional power supply:
Terminal 1 & 2: 230 VAC -15% + 10%
or
Terminal 1 & 3: 115 VAC -15% + 10%
or
Terminal A & 12: 24 VDC -10% + 20%
L1
N
L1
For supply
with 230 / 115
VAC:
Bridge F- 14
For supply
with 24VDC
Bridge F- A
We will be happy to provide you with individual advice for planning your application
with muting function. The applications shown here are examples only.
Conveyor belt
Conveyor belt
