Leuze electronic MLC 520 EX Series User Manual

Electrical connection
Leuze electronic MLC 530 56
The inner wiring of the sensor connection module is specially adapted to the operating modes of the
receivers. Independent of the polarity of the operating voltage of the cabinet, +24 V DC on pin 1 and 0 V
on pin 3 is always applied to the 5-pin A-coded sockets of the connection module. On each socket X2, X3
and X4, one of the possible receiver control inputs 3, 4 and 8 is applied on pin 4. A second signal is
present on pin 2 of all sockets, so that all pin combinations, 3/4, 3/8 and 4/8, are available on every socket.
The shield of the connection cable is distributed on the thread of each socket.
When connecting sensors which deliver a single-channel signal, such as Light Beam Devices as muting
sensors, a three-wire connection cable with connection to pins 1, 3 and 4 must be used. Four- or five-wire
connection cables are necessary for the connection of two-channel sensors and operational controls. Suit-
able connection cables are available as accessories (see table 15.5).
7.3 Operating mode 1
The following functions can be selected via external wiring:
• Fixed blanking can be taught without size tolerance and activated/deactivated during operation, see
chapter 4.7.1 „Fixed blanking“.
• Integration of contact-based safety circuit possible, see chapter 4.6.1 „Contact-based safety circuit“.
• The two functions named can be combined (see table 7.5).
Permanent settings which cannot be changed by control signals:
• Internal start/restart interlock deactivated
• SingleScan selected
Table 7.5: Pin assignment operating mode 1
Circuit diagram examples for the sensor connection module can be found in the following chap-
ters for the respective operating modes.
Teach blanking by opening the bridge between pin 1 and pin 8 with a teach key switch and ap-
plying a voltage of +24 V to pin 1 and a voltage of 0 V to pin 8 (see table 7.5).
Pin Continuous oper-
ation with blank-
ing
Continuous oper-
ation without
blanking
Teaching the blanking
(open bridge, apply volt-
age)
Integration of a contact-
based safety circuit
1 (IO1) Bridge to pin 8
(IN8)
Bridge to pin 8
(IN8)
+24 V
3 (IN3) +24 V 0 V
4 (IN4) 0 V +24 V Normal closed contact
between “Active/inactive
blanking” switch and
device
or
Normal closed contact
between existing “Active/
inactive blanking” wiring
and device

Leuze electronic MLC 520 EX Series Specifications

General

Brand	Leuze electronic
Model	MLC 520 EX Series
Category	Lighting Equipment
Language	English