QDE-825D BANNER ENGINEERING, QDE-825D Datasheet - Page 62

• Manufacturer Part Number: QDE-825D
• Description: Safety Light Curtain
• Manufacturer: BANNER ENGINEERING

Specifications of QDE-825D

• Light Curtain Type: Safety
• Accessory Type: Machine Interface Cable
• For Use With: EZ-Screen Safety Light Screen

60
60
When contacts (e.g., an E-stop button) are connected to a
cascaded receiver (per Section 7.8), CSSI response time is
40 ms plus the 2 ms adder similar to the defined area Tr.
Figure 7-6. Calculating response times for a three-light screen cascade – both Individual and Overall methods
Emitters
P/N 133487
P/N 112852 rev. F
Emitters
Cascadeable EZ-SCREEN
Machine
Control
Overview
Machine
Control
System Overall Response Time for all systems shown here is 40 + [(3 – 1) × 2 ms] = 44 ms
Tr
Receivers
(CSSI)
Receivers
= 40 ms + [(N-1) x 2 ms]
EZ-SCREEN
Position #3
40 + 2 + 2 = 44
Individual Response
Time: 44 ms
EZ-SCREEN
Position #2
15 + 2 = 17
Individual Response
Time: 17 ms
EZ-SCREEN
Position #1
Individual Response
Time: 15 ms
Emitters
Emitters
Machine
Control
Machine
Control
Receivers
Receivers
EZ-SCREEN
Position #3
15 + 2 + 2 = 19
Individual Response
Time: 19 ms
EZ-SCREEN
Position #2
40 + 2 = 42
Individual Response
Time: 42 ms
EZ-SCREEN
Position #1
Individual Response
Time: 15 ms
Cascade Configuration vs. Response Time
When light screens of different lengths or different resolutions
(and therefore different response times) are used in one circuit,
their positions in the cascade may become a consideration.
For example, consider the light screen circuits depicted in Figure
7-6. Each example contains three safety light screens, one 1200
mm (with a response time of 40 ms), and two 300 mm light
screens (15 ms response each). Depending on their placement
in the cascade, the individual response time for the same three
light screens can vary from 40 to 44 ms.
Emitters
Emitters
Machine
Control
Machine
Control
Banner Engineering Corp.
Banner Engineering Corp.
www.bannerengineering.com • Tel: [phone]
www.bannerengineering.com • Tel: [phone]
Receivers
Receivers
EZ-SCREEN
Position #3
15 + 2 + 2 = 19
Individual Response
Time: 19 ms
EZ-SCREEN
Position #2
15 + 2 = 17
Individual Response
Time: 17 ms
EZ-SCREEN
Position #1
Individual Response
Time: 40 ms
Instruction Manual
•
•
Minneapolis, U.S.A.
Minneapolis, U.S.A.
EZ-SCREEN