Rockwell Automation 42DR Intrinsically Safe Sensor - Manual (Page 7)

7
Installation Wiring Diagrams for Series 5000 Intrinsically Safe Version
10mA Max.
Load
Supply Return
Signal
Return
Power Supply
24V DC 8%
( + )
( -- )
Out
Gnd
Earth Ground
(less than 1 ohm)
In
Gnd
Barrier Bus
Gnd
AB #897H--S140
Out
AB #897H--S120
Gnd
In
Barrier Entity Parameters 
Load Supply
Power Supply
24V DC 8%
Load
Supply Return
( + )
( + )
Out
Gnd
Earth Ground
(less than 1 ohm)
Gnd
In
In
Gnd
In
Gnd
Out
Load
Supply
( +5V DC)
Earth Ground
(less than 1 ohm)
Out
AB #897H--S120
Gnd
In
In
Gnd
Gnd
Out
Barrier Entity Parameters 
Power Supply
42DRA--5500, 42DRU--5500
42DRP--5500, 42DRU--5700
42DTB--5500
NPN Open Collector Connections (Sinking)
(2 Barriers Required)
Class I, II, III, Division 1, Group C, D, E, F, G
Class I, II, III, Division 2, Group A, B, C, D, F, G
Zener Diode Barriers
Power Supply
& Load Circuits
Nonhazardous Location Hazardous Location
Photoheads Terminal Base
24V DC 8%
Vmax = 29.5V
Imax = 107mA
Ci = 0F
Li = 0H
AB #897H--S120
Gnd
Load
TTL
Device
Supply Return
( + )
( + )
( + )
( -- )
PNP Open Collector Connections (Sourcing)
(3 Barriers Required)
Vmax = 29.5V
Imax = 107mA
Ci = 0F
Li = 0H
Terminal Base Photohead
Sink Wiring
Terminal Base Photohead
Source Wiring
( + )
( 1 )
( -- )
( + )
( 2 )
( 3 )
( -- )
Barrier Bus
AB #897H--S120
Out
Barrier Entity Parameters 
AB #897H--S120
Gnd
Barrier Bus
Gnd
AB #897H--S140
( -- )
Signal
Return
Class I, II, III, Division 1, Group A, B, C, D, E, F, G
Class I, II, III, Division 2, Group A, B, C, D, F, G
PNP Open Collector Connections (Sourcing)
(2 Barriers Required)
Vmax = 29.5V
Imax = 107mA
Ci = 0F
Li = 0H
Terminal Base Photohead
Source Wiring
( + )
( 2 )
( 3 )
( -- )
Notes :
 Installation must be in accordance with the National Electrical CodeR (NFPA 70, Article 504), ANSI/ISA--RP12.6, and the manufacturer’s instructions.
 Barrier entity parameters: Voc 29.5V; Isc 107mA; Ca  Ccable; La  Lcable; recommended barriers are indicated on the above wiring diagram.
 If the electrical parameters of the cable used are unknown, the following values may be used: Capacitance -- 60pF/ft.; Inductance -- 0.20H/ft.
 Barrier bus must be insulated from other grounded metal. Use DIN Rail Mounting Kit, Allen-Bradley #64--136.
 Maximum nonhazardous area voltage must not exceed 250V.
 An approved dust tight seal is required for Class II, III applications.
 The output circuits of Zener Diode Barriers shall be in separate cables or separated from each other per NEC 504--30.
 No revision to drawing without prior UL approval.
Allen-Bradley Control Drawing #133--451(Ver 08)