Leuze electronic MLC 500 - Starting up the device; Switching on and sensor alignment

Starting up the device
Leuze electronic MLC 520 Host/Guest 40
8 Starting up the device
WARNING
Improper use of the safety sensor may result in serious injury!
Ä Make certain that the entire device and the integration of the optoelectronic protective de-
vice were inspected by qualified and instructed persons (see chapter 2.2 "Necessary com-
petencies").
Ä Make certain that a dangerous process can only be started while the safety sensor is
switched on.
Prerequisites:
• Safety sensor mounted (see chapter 6 "Mounting") and connected (see chapter 7 "Electrical connec-
tion") correctly
• Operating personnel were instructed in proper use
• Dangerous process is switched off, outputs of the safety sensor are disconnected, and the system is
protected against being switched back on
Ä After start-up, check the function of the safety sensor (see chapter 9.1 "Before commissioning and fol-
lowing modifications").
8.1 Switching on
Requirements for the supply voltage (power supply unit):
• Reliable mains separation is ensured.
• Current reserve of at least 2A is available.
• The RES function is activated - either in the safety sensor or in the downstream control.
Ä Switch on the safety sensor.
ð The safety sensor performs a self test and then displays the response time of the receiver (see chapter
3.4.2 "Operating indicators on the MLC520 receiver").
Check operational readiness of sensor
Ä Check whether LED1 is permanently lit green or red (see chapter 3.4.2 "Operating indicators on the
MLC520 receiver").
ð The safety sensor is ready for use.
8.2 Aligning the sensor
NOTICE
Faulty or incorrect alignment may result in an operating fault!
Ä The alignment performed during start-up should only be performed by qualified persons (see
chapter 2.2 "Necessary competencies").
Ä Observe the data sheets and mounting instructions of the individual components.
Prealignment
Fasten the transmitter and receiver in a vertical or horizontal position and at the same height so that
• the front screens are directed at each other.
• the transmitter and receiver connections point in the same direction.
• the transmitter and receiver are arranged parallel to each other, i.e. they are the same distance from
each other at the beginning and end of the device.