Leuze MLC 530 SPG, Original Operating Instructions

Page: 50 / 105

Applications
Leuze electronic GmbH + Co. KG MLC 530 SPG 50
Process sequence
• Operating mode 5 without TH timer hold signal (see chapter 4.4.3 "Operating mode 5 - Standard")
• Start of the gating sequence: with a running transport system, sensors PS1 and PS2 are activated
within, e.g., 300 ms. At time T1, the control generates the CS switching signal.
• Gating end at time T2:
T2 = T1 + (L + 400 mm) / v
• (L + 400 mm): length of the pallet plus 200 mm in front of and 200 mm after the protective device
• v: conveyor speed of the transport system, e.g., 0.3 m/s
T1
t1
s1
t2
s2 t3
T2
CS
PFI
GA
PS1
PS2
s3
CS Switching signal from the control
PFI Protective field violation
GA Gating active
PS1 Sensor 1
PS2 Sensor 2
T1 Start of the gating sequence
T2 Gating end
t1 Time difference between the CS switching signal and the protective field violation: < 4 s
t2 Time difference between clearing of the protective field and switching off of the CS switching signal: < 1 s
t3 Time difference of the sensor signals: < 300 ms
Fig. 6.6: Signal sequence when feeding a pallet into a danger zone