Allen-Bradley Series B User manual

FLEX I/O is a trademark of Allen-Bradley Co. Inc.
Publication 1794-5.11 – November 1996
FLEX I/O
Remote I/O Adapter
(Cat. No. 1794-ASB Series B)
1
2
3
4, 5 67
8
9
Component Identification
1Remote I/O Adapter module
2Indicators
3 Communication reset pushbutton (PRL)
4 Access door to switches S1 and S2
5 Switches S1 and S2 (behind access door)
6 Remote I/O cable connector
7+24V dc connections
8 24V common connections
9 Flexbus connector
Installation Instructions

FLEX I/O Remote I/O Adapter2
Publication 1794-5.11 – November 1996
European Union Directive Compliance
If this product has the CE mark it is approved for installation within the
European Union and EEA regions. It has been designed and tested to meet
the following directives.
EMC Directive
This product is tested to meet Council Directive 89/336/EEC
Electromagnetic Compatibility (EMC) and the following standards, in
whole or in part, documented in a technical construction file:
•EN 50081-2EMC – Generic Emission Standard, Part 2 – Industrial
Environment
•EN 50082-2EMC – Generic Immunity Standard, Part 2 – Industrial
Environment
This product is intended for use in an industrial environment.
Low V oltage Directive
This product is tested to meet Council Directive 73/23/EEC Low Voltage,
by applying the safety requirements of EN 61131–2 Programmable
Controllers, Part 2 – Equipment Requirements and Tests.
For specific information required by EN 61131-2, see the appropriate
sections in this publication, as well as the following Allen-Bradley
publications:
•Industrial Automation Wiring and Grounding Guidelines For Noise
Immunity, publication 1770-4.1
•Guidelines for Handling Lithium Batteries, publication AG-5.4
•Automation Systems Catalog, publication B111

FLEX I/O Remote I/O Adapter 3
Publication 1794-5.11 – November 1996
Mounting on the DIN Rail
B
C
A
C
1. Position the remote I/O adapter module A on a 35 x 7.5mm DIN rail
B(A-B pt. no. 199-DR1; 46277-3; EN 50022) at a slight angle.
2. Hook the lip on the rear of the adapter (A) onto the top of the DIN rail
(B), and rotate the adapter module onto the rail.
3. Press the adapter module down onto the DIN rail until flush. Locking
tab (C) will snap into position and lock the adapter module to the DIN
rail.
4. If the adapter module does not lock in place, use a screwdriver or
similar device to move the locking tab down while pressing the
adapter module flush onto the DIN rail and release the locking tab to
lock the adapter module in place. If necessary, push up on the locking
tab to lock.
5. Connect the adapter wiring as shown under “Wiring” later in this
document.
NOTE: For Panel/Wall mounting, refer to publication 1794-5.13, “Panel
Mounting Kit, Cat. No. 1794-NM1.”

FLEX I/O Remote I/O Adapter4
Publication 1794-5.11 – November 1996
Wiring
1SH 2
DF
G
E
20131
24V
COM
Allen-Bradley
24 VDC
POWER SUPPLY
RIO ADAPTER
1794–ASB2
ADAPTER
ACTIVE FAULT LOCAL FAULT
1. Connect the remote I/O cable to the removable remote I/O connector.
Connect To
Blue Wire – RIO 1
Shield Wire – RIO SH
Clear Wire – RIO 2
2. Connect +24V dc input to the left side of the lower connector,
terminal E.
3. Connect 24V common to the left side of the upper connector,
terminal D.
4. Connections Gand Fare used to pass 24V dc power (G) and 24V
common (F) to the next module in the series (if required).

FLEX I/O Remote I/O Adapter 5
Publication 1794-5.11 – November 1996
Set the Adapter Switches
The adapter switches are located under a flip-open cover on the front of
the adapter. Set the switches as shown below.
87654321
87654321
ON
ON
S1 S2 Flip-open
cover

FLEX I/O Remote I/O Adapter6
Publication 1794-5.11 – November 1996
87654321
87654321
ON
ON
S1 S2
First I/O
Group
I/O Rack
Number
Hold Last State
Processor Restart Lockout
Communication Rate
Reply Delay
Last Adapter
Hold Inputs
Reserved
First I/O Group I/O Rack Number
S1–8 S1–7 Module group S1–6 thru S1–1
ON ON 0 (1st)
Refer to the table on
page
OFF ON 2 (2nd)
Refer to the table on
page 7
ON OFF 4 (3rd)
OFF OFF 6 (4th)
S2–8 S2–7 Hold Inputs S2–6 Last Adapter S2–5 Reply Delay
Reserved ON Hold Inputs ON Not last ON Off
OFF Reset Inputs OFF Last OFF On
Communication Rate
Processor Restart
Lockout
Hold Last State
S2–4 S2–3 Bits/s S2–2 Processor: S2–1 Processor will:
ON ON 57.6k ON Restart ON Reset Outputs
OFF ON 115.2k OFF Locked Out OFF Hold last state
ON OFF 230.4k
OFF OFF 230.4k

FLEX I/O Remote I/O Adapter 7
Publication 1794-5.11 – November 1996
Rack Number S1 Switch Position
1747-SN PLC–2 &
1771-SN PLC–5 PLC–5/250 PLC–3 6 5 4 3 2 1
Rack 0 Rack 1 Not Valid Rack 0 Rack 0 ON ON ON ON ON ON
Rack 1 Rack 2 Rack 1 Rack 1 Rack 1 OFF ON ON ON ON ON
Rack 2 Rack 3 Rack 2 Rack 2 Rack 2 ON OFF ON ON ON ON
Rack 3 Rack 4 Rack 3 Rack 3 Rack 3 OFF OFF ON ON ON ON
Rack 5 Rack 4 Rack 4 Rack 4 ON ON OFF ON ON ON
Rack 6 Rack 5 Rack 5 Rack 5 OFF ON OFF ON ON ON
Rack 7 Rack 6 Rack 6 Rack 6 ON OFF OFF ON ON ON
Rack 7 Rack 7 Rack 7 OFF OFF OFF ON ON ON
Rack 10 Rack 10 Rack 10 ON ON ON OFF ON ON
Rack 1 1 Rack 1 1 Rack 1 1 OFF ON ON OFF ON ON
Rack 12 Rack 12 Rack 12 ON OFF ON OFF ON ON
Rack 13 Rack 13 Rack 13 OFF OFF ON OFF ON ON
Rack 14 Rack 14 Rack 14 ON ON OFF OFF ON ON
Rack 15 Rack 15 Rack 15 OFF ON OFF OFF ON ON
Rack 16 Rack 16 Rack 16 ON OFF OFF OFF ON ON
Rack 17 Rack 17 Rack 17 OFF OFF OFF OFF ON ON
Rack 20 Rack 20 Rack 20 ON ON ON ON OFF ON
Rack 21 Rack 21 Rack 21 OFF ON ON ON OFF ON
Rack 22 Rack 22 Rack 22 ON OFF ON ON OFF ON
Rack 23 Rack 23 Rack 23 OFF OFF ON ON OFF ON
Rack 24 Rack 24 Rack 24 ON ON OFF ON OFF ON
Rack 25 Rack 25 Rack 25 OFF ON OFF ON OFF ON
Rack 26 Rack 26 Rack 26 ON OFF OFF ON OFF ON
Rack 27 Rack 27 Rack 27 OFF OFF OFF ON OFF ON
Rack 30 Rack 30 ON ON ON OFF OFF ON
Rack 31 Rack 31 OFF ON ON OFF OFF ON
Rack 32 Rack 32 ON OFF ON OFF OFF ON
Rack 33 Rack 33 OFF OFF ON OFF OFF ON
Rack 34 Rack 34 ON ON OFF OFF OFF ON
Rack 35 Rack 35 OFF ON OFF OFF OFF ON
Rack 36 Rack 36 ON OFF OFF OFF OFF ON
Rack 37 Rack 37 OFF OFF OFF OFF OFF ON
Rack 40 ON ON ON ON ON OFF
Rack 41 OFF ON ON ON ON OFF
Rack 42 ON OFF ON ON ON OFF
Rack 43 OFF OFF ON ON ON OFF
Rack 44 ON ON OFF ON ON OFF
Rack 45 OFF ON OFF ON ON OFF
Rack 46 ON OFF OFF ON ON OFF
Rack 47 OFF OFF OFF ON ON OFF
Rack 50 ON ON ON OFF ON OFF
Rack 51 OFF ON ON OFF ON OFF
Rack 52 ON OFF ON OFF ON OFF
Rack 53 OFF OFF ON OFF ON OFF
Rack 54 ON ON OFF OFF ON OFF

FLEX I/O Remote I/O Adapter8
Publication 1794-5.11 – November 1996
S1 Switch Position Rack Number
123456
PLC–3PLC–5/250PLC–5
PLC–2 &
1771-SN
1747-SN
Rack 55 OFF ON OFF OFF ON OFF
Rack 56 ON OFF OFF OFF ON OFF
Rack 57 OFF OFF OFF OFF ON OFF
Rack 60 ON ON ON ON OFF OFF
Rack 61 OFF ON ON ON OFF OFF
Rack 62 ON OFF ON ON OFF OFF
Rack 63 OFF OFF ON ON OFF OFF
Rack 64 ON ON OFF ON OFF OFF
Rack 65 OFF ON OFF ON OFF OFF
Rack 66 ON OFF OFF ON OFF OFF
Rack 67 OFF OFF OFF ON OFF OFF
Rack 70 ON ON ON OFF OFF OFF
Rack 71 OFF ON ON OFF OFF OFF
Rack 72 ON OFF ON OFF OFF OFF
Rack 73 OFF OFF ON OFF OFF OFF
Rack 74 ON ON OFF OFF OFF OFF
Rack 75 OFF ON OFF OFF OFF OFF
Rack 76 ON OFF OFF OFF OFF OFF
Not Valid OFF OFF OFF OFF OFF OFF
Rack address 77 is an illegal configuration.
PLC-5/1 1 processors can scan rack 03.
PLC-5/15 and PLC-5/20 processors can scan racks 01–03.
PLC-5/25 and PLC-5/30 processors can scan racks 01–07.
PLC-5/40 and PLC-5/40L processors can scan racks 01–17.
PLC-5/60 and PLC-5/60L processors can scan racks 01–27.
PLC-5/80 processors can scan racks 01–27.
PLC-5/250 processors can scan racks 00–37.

FLEX I/O Remote I/O Adapter 9
Publication 1794-5.11 – November 1996
1794-ASB Specifications
I/O Capacity 8 modules
Power Supply Note: In order to comply with CE Low V oltage
Directives, you must use a Safety Extra Low
V oltage (SEL V) or a Protected Extra Low
V oltage (PELV) power supply to power this
adapter.
Input V oltage Rating 24V dc nominal
Input Voltage Range 19.2V to 31.2V dc (includes 5% ac ripple)
Communication Rate 57.6k bps
1 15.2k bps
230.4k bps
Indicators Adapter Active – green
Adapter fault – red
Local fault – red
Flexbus Output Current 640mA maximum
Isolation Voltage 100% tested at 850V dc for 1s between user
power and flexbus
Power Consumption 450mA maximum from external 24V supply
Power Dissipation 4.6W maximum @ 31.2V dc
Thermal Dissipation 15.7 BTU/hr @ 31.2V dc
Environmental Conditions
Operational T emperature
Storage T emperature
Relative Humidity
Shock Operating
Non-operating
Vibration
0 to 55
o
C (32 to 131
oF)
–40 to 85
o
C (–40 to 185
oF)
5 to 95% noncondensing
30 g peak acceleration, 1 1(+ 1)ms pulse width
50 g peak acceleration, 1 1(+ 1)ms pulse width
T ested 5 g @ 10–500Hz per IEC 68-2-6
Remote I/O Cable Belden 9463 or equivalent as specified in
publication ICCG-2.2
Power Conductors
Wire Size
Category
12 gauge (4mm
2
) stranded maximum
3/64 inch (1.2mm) insulation max.
21
Specifications continued on next page

FLEX I/O Remote I/O Adapter10
Publication 1794-5.11 – November 1996
1794-ASB Specifications
Agency Certification
(when product or packaging is
marked)
• CSA certified
•CSA Class I, Division 2
Groups A, B, C, D certified
• UL listed
• CE marked for all applicable directives
User Manual Publication 1794-6.5.3
1 Use this conductor category information for planning conductor routing. Refer to publication
1770-4.1, “Industrial Automation Wiring and Grounding Guidelines.”

FLEX I/O Remote I/O Adapter 11
Publication 1794-5.11 – November 1996
Mounting Dimensions
Inches
(Millimeters)
3.4
(87)
3.2
(80)
2.7
(68)
.83 (21)
1794-ASB
3.4H x 2.7W x 2.7D
(87H x 68W x 69D)
1.4
(35)
A
2.3
(59)
A=
Mounting hole dimensions for optional mounting kit
B
B
= DIN rail
2.0
(50)
1.2
(28)
C
C = Secure DIN rail approximately every 200mm

FLEX I/O Remote I/O Adapter12
Publication 1794-5.11 – November 1996
Withmajorofficesworldwide.
World Headquarters,
Allen-Bradley ,
1201 South Second Street,
Milwaukee, WI 53204 USA,
T el: (1) 414 382-2000 Fax: [phone]
Publication 1794-5.1 1 – November 1996
Supersedes publication 1794-2.11 – December 1995
PN955127–31
Copyright 1995 Allen-Bradley Company, Inc. Printed in USA