Rockwell Automation Allen-Bradley 140M, Руководство пользователя

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Rockwell Automation Publication 450L-UM001F-EN-P - March 2022 89
Chapter 6 Installation and Wiring
Cascading Cable Connection
The pin assignment for the cable connected to a cascading plug-in (catalog
number 450L-APC-IO-8) depends on if the cascading plug-in is inserted in a
450L-E safety light curtain transceiver stick working as a transmitter or as a
receiver. It also depends on the settings of the DIP switches on the RX plug-in.
Power Supply
The external voltage supply (+24V DC) must meet the requirements of
IEC 61496-1. Pay special attention to the following requirements:
• The power supply must bridge a short-term power failure of 20 ms
(according to IEC 60204-1).
• The maximum deviation of the voltage levels is 24V DC ±15%.
• The power supply is protected against overload (use NEC Class 2 or fuse
with 4 A in the 24V DC circuit).
• The light curtain devices must be provided with a 24V DC PELV or SELV
power supply that conforms to the requirements of 414-3 or IEC 60364-4-
41. These provisions have been taken to confirm that, even if an internal
fault occurs, the voltage at the outgoing terminals cannot exceed 60V DC.
To comply with UL restrictions, GuardShield safety light curtain sticks are
powered by DC sources whose secondary circuits have double insulation or
reinforced insulation to isolate them from the primary circuit. The DC power
supply must satisfy the requirements for National Electric Code (NEC) Class 2.
The following are Rockwell Automation power supplies that are NEC Class 2
and PELV compliant. They also meet the isolation and output hold-off time
requirements of two GuardShield safety light curtain transceiver sticks
(GuardShield safety light curtain outputs not loaded):
• 2080-PS120-240V AC
• 1606-XLP15E
• 1606-XLP30E
• 1606-XLP50E
• 1606-XLP50EZ
• 1606-XLP72E
• 1606-XLP95E
• 1606-XLSDNET4
Table 50 - Pin Assignment of the Cable if Connected to a M12 8-pin I/O Cascading Plug-in; (Cat. No.
450L-APC-IO-8)
Connection Cable Face View
of Convex M12 8-pin (DC
Micro)
Color
(Cat. No. 889D-M8AB-
x
)
(1)
(1) Replace the
x
with 2 [2 m (6.6 ft)], 5 [5 m (16.4 ft)], 10 (10 m (32.8 ft)] for desired length.
Pin No.
Signal
Transmitter
Signal Receiver
(4 Sensor Muting)
(2)
(2) If set with DIP switches.
White 1 — Muting sensor S3 in
Brown 2 +24V DC +24V DC
Green 3 Functional earth FE Functional earth FE
Yellow 4 — Muting sensor S4 in
Gray 5 — Muting sensor S1 in
Pink 6 — Muting sensor S2 in
Blue 7 0V (GND) 0V (GND)
Red 8 — Muting lamp
5
6
7
8
4
3
1
2
Green
Brown
Red
Yellow
Pink
Gray
Blue
White