5.1 Integrated connector plug
The ULVT construction series is supplied with
PG threaded joints as standard. Various
conventional connector plugs can also be
obtained as optional accessories.
The electric connection is implemented via
terminal screws in the connector cover (Fig.
17/1). The cover can be removed once the 4
screws have been loosened.
The transmitter and receiver require a power supply of 24 V DC. The ULSG switchgear performs the power failure bridging of
20 ms pursuant to EN 60204 and is thus suitable as the power supply for ULVT light barriers. The receiver is equipped with 2
inputs and 2 outputs. The transmitter is connected via one 3-pin cable and the receiver via one 5 to 7-pin cable (depending on
operating mode). The permissible cable cross-section is max. 1.5 mm2. The cables must be routed separately from power
lines.
5.2 Electric connection ratings
5.3 Connectors
- Outputs 1 and 2 (OSSD 1 and OSSD 2)
The outputs are not potential-free and must not be switched in series
or parallel, but must be connected and processed separately!
In the operating mode with
equivalent outputs, both PNP outputs are
failsafe and feature internal short-circuit and cross-circuit monitoring. Both
outputs are high (+24 V) when the light path is free.
In the operating mode with
antivalent outputs, output 1 is high (+24 V)
and output 2 low (0 V) when the light path is free. Output 2 is not failsafe
in this operating mode. This operating mode is only permissible in
conjunction with the safety switchgears LSUW NSR 3-1K, LSUW N1-
Muting K, or another safe sequential phase control device which
monitors output 2!
- Input contactor check (EDM)
If the operating mode with
contactor check is set, the auxiliary contacts
k1 and k2 of the driven contactors k1 and k2 must be connected to the
contactor check input in series and with +24 V as shown in Fig. 17/2.
The OSSD1 and OSSD 2 of the ULVT will only switch on the two
contactors when contactor check input has detected the idle status of the
contactors (+24 V at contactor check input).
Once the contactors have been driven, both of them must respond within
300 ms. The two auxiliary contacts must then be open (0 V at contactor
check input).
If the operating mode
without contactor check is set, the input
contactor check must be unoccupied.
FIESSLER
E L E K T R O N I K
17
5 Electric connection
- Connection of receiver and transmitter
The electric connection must only
be carried out when no voltage is
present.
ULVTS transmitter
ULVTE receiver
Power supply
24 V DC, + 20% - 10%, SELV
24 V DC,
±
20%, SELV
Current draw
max. 250 mA
max. 250 mA (without load)
Outputs
-
OSSD 1 and 2: Failsafe PNP outputs,
max. 0.5 A, short-circuit and cross-circuit monitoring (in
operating mode with
antivalent outputs, output 2 is a non-
failsafe PNP output, max 20 mA)
Inputs
-
Inputs contactor check and start button:
0 V to 24 V DC _+ 20%, 10 mA
Electric connection
Integrated connector plug with PG9 as strain relief,
alternatively conventional connector plug.
Integrated connector plug with PG9 as strain relief,
alternatively conventional connector plug.
Connecting cable
3-pin max. 1.5 mm2
5 to 7-pin (depending on operating mode) max. 1.5 mm2
Protection category
IP 65
IP 65
AAAAA
AAAAA
AAAAA
AAAAA
AAAAA
AAAAA
AAAAA
AAAAA
OSSD 2
OSSD 1
3
4
7
+24V DC±20%
0V
6
K 1
K 2
Fig. 17/2 Outputs 1 and 2
AAAAAA
AAAAAA
AAAAAA
AAAAAA
AAAAAA
AAAAAA
AAAAAA
AAAAAA
AAAAAA
0V
7
2
+24V DC±20%
Eingang Schützkontrolle
6
Hilfsöffner k1
Hilfsöffner k2
Fig. 17/3 Input contactor check
1
2
3
4
5
6
7
3: OSSD1
5:
2: EDM
7: 24VDC
±20%
4: OSSD2
1: Start
1 2 3 4 5 6
off
1 2 3 4 5 6 7
1 2 3
6: 0V
Fig. 17/1 Integrated connector plug with terminal screws in
connector cover
Receiver 7-pin, transmitter 3-pin.
BA - ULVT
auxiliary contact 1
auxiliary contact 2
input contactor check
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