Allen-Bradley 1791-16BC User manual

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1
16 Input/16 Output
DC Block I/O Module
Cat. No. 1791-16BC Series B
Installation
Mount the block I/O module in a vertical (recommended) or horizontal position.
Allow sufficient room around the block for cooling air to flow through the block
module. Refer to Figure 1.
Figure 1
Mounting Dimensions for the Block I/O Module
Cat. No. 1791–16BC (PLC version shown)
2 mounting holes
for 1/4–inch screws
1
30
4.35
(110.5)
3.35
(85.1)
6.95
(176.5)
6.60
(167.6)
0.5
(12.7)
6.95H x 4.35W x 3.85D
(176.5H x 1 10.5W x 98D)
Inches
(Millimeters)
Equipment
Grounding Stud
CAUTION: When tightening grounding
stud nut, do not exceed 15 in-lbs.
Block
Operating temperature
in air gap below
module must not
exceed 60
o
C (140
oF).
2.0 (50.8) air gap
on all 4 sides.
30
1
1791-16BC
24V dc IN/OUT
IN OUT
00
01
02
03
04
05
06
07
10
11
12
13
14
15
16
17
00
01
02
03
04
05
06
07
10
11
12
13
14
15
16
17
G
00
01
02
03
04
05
06
07
10
11
12
13
14
15
16
17
IN
G
00
01
02
03
04
05
06
07
10
11
12
13
14
15
16
17
OUT G
G
COMM
STATUS
RACK #
 
Dimensions
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Installation Instructions
Block I/O
Cat. No. 1791-16BC Series B
2
Figure 2
Mounting on a DIN Rail
1. Hook top of slot over DIN rail.
2. While pressing block against rail, pull
down on locking levers.
3. When block is flush against rail, push up
on locking levers to secure block to rail.
Locking levers
DIN Rail
A-B Pt. No. 199-DR1
46277-3
EN 50022
(35 x 7.5mm)
Figure 3
Inserting Labels
A set of labels is supplied with your module.
Select the proper module designation labels
(PLC or SLC) for the front door and
terminal strips.
1. Remove die-cut labels from package.
Select correct labels for your application.
(PLC label is numbered 00–07 and 10–17.
SLC is numbered 00–07 and 08–15.)
3. Open clear front door . Insert module
designation label into slots in door .
2.
Remove plastic cover on terminal strip
by flexing in middle. Slip terminal
designation label with power and RIO
designations into built-in holders in left
terminal strip cover . Flex cover slightly
to install. Repeat for the other
terminal strip using the remaining label.
2
3
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Installation Instructions
Block I/O
Cat. No. 1791-16BC Series B
3
T able A
Acceptable
W iring Cables for Block I/O Connection
Use Cable Type
Remote I/O link Belden 9463
Input and output wiring Up to 14AWG (2mm2) stranded with 3/64 inch insulation
Connect wiring as shown in Figure 4 or Figure 5.
Figure 4
Wiring Connections with PLC Family Programmable Controllers (refer
to T able B)
RIO
1
30
PLC
GND
BLU
CLR
in
00
in 01
in 02
in 03
in 04
in 05
in 06
in 07
NOT
USED
SHD
NOT
USED
+24
RET
+24
24V dc
+–
RET
2
RET
2
NOT
USED
RET
1
RET
1
NOT
USED
++
––
in
1 1
in 10
in 12
in 13
in 14
in 15
in 16
in 17
NOT
USED
out 00
out 01
out 02
out 03
out 04
out 05
out 06
out 07
out 10
out 12
out 13
out 14
out 15
out 16
out 1
1
out 17
NOT
USED
NOT
USED
NO
CONN
NO
CONN NO
CONN
NO
CONN
NO
CONN
30
1
RET
3
Vdc
3
Vdc
3
RET
4
Vdc
4
Vdc
4
+
_+_
24V dc 24V dc
24V dc
24V dc
RET 1 connections are internally connected.
RET 2 connections are internally connected.
Vdc 3 connections must be externally connected together to accommodate total amperage rating.
Vdc 4 connections must be externally connected together to accommodate total amperage rating.
Output fusing is recommended. Refer to T
able C.
1
2
29
30 1
2
29
30
NOTE:
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Installation Instructions
Block I/O
Cat. No. 1791-16BC Series B
4
Figure 5
Wiring Connections with SLC Family Processors (refer to T able B)
RIO
1
30
SLC
GND
BLU
CLR
in
00
in 01
in 02
in 03
in 04
in 05
in 06
in 07
NOT
USED
SHD
NOT
USED
+24
RET
+24
24V dc
+–
RET
2
RET
2
NOT
USED
RET
1
RET
1
NOT
USED
++
––
NOT
USED
out
00
out 01
out 02
out 03
out 04
out 05
out 06
out 07
NOT
USED
NOT
USED
NO
CONN
NO
CONN NO
CONN
NO
CONN
NO
CONN
30
1
RET
3
Vdc
3
Vdc
3
RET
4
Vdc
4
Vdc
4
+
_+_
24V dc 24V dc
24V dc
24V dc
out 08
out 09
out 10
out 1
1
out 12
out 13
out 14
out 15
in 08
in 09
in 10
in 1 1
in 12
in 13
in 14
in 15
RET 1 connections are internally connected.
RET 2 connections are internally connected.
Vdc 3 connections must be externally connected together to accommodate total amperage rating.
Vdc 4 connections must be externally connected together to accommodate total amperage rating.
Output fusing is recommended. Refer to T
able C.
1
2
29
30
1
2
29
30
NOTE:
The block I/O module has an equipment grounding stud on the lower left side of
the module. Connect this grounding stud to your equipment ground. Torque the
nut to 15 in-lbs maximum when connecting to your equipment ground.
ATTENTION: Do not overtighten the nut on the grounding stud
when connecting the wire. Damage to the module could result.
Refer to “Programmable Controller Wiring and Grounding Guidelines”
(1770-4.1) for further information.
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Installation Instructions
Block I/O
Cat. No. 1791-16BC Series B
5
T able B
Wiring Block Designations
Connections
1791–16BC Series B Connector/Terminal
C
onnect
i
ons Designation Description Left Right
P
+24 +24V dc Power 1
Power
Connections
RET +24 dc Return 3
Connections
GND Chassis ground 21
R t I/O
BLU Blue wire – RIO 6
Remote I/O
Connections
CLR Clear wire – RIO 8
Connections
SHD Shield – RIO 7
I/O Connections
PLC: in 00 thru 07
SLC: in 00 thru 07
PLC: Input 00 thru 07
SLC: Input 00 thru 07
16, 18, 20, 22,
24, 26, 28, 30
Input RET 1 dc input return 12, 142
Input
(G)6PLC: in 10 thru 17
SLC: in 08 thru 15
PLC: Input 10 thru 17
SLC: Input 08 thru 15
15, 17, 19, 21,
23, 25, 27, 29
RET 2 dc input return 11, 133
PLC: out 00 thru 07
SLC: out 00 thru 07
PLC: Output 00 thru 07
SLC: Output 00 thru 07
15, 13, 11, 9,
7, 5, 3, 1
Vdc 3 +24V dc output supply 19, 174
Output RET 3 dc output return 21
Output
(G)7PLC: out 10 thru 17
SLC: out 08 thru 15
PLC: Output 10 thru 17
SLC: Output 08 thru 15
16, 14, 12,
10, 8, 6, 4, 2
Vdc 4 +24V dc output supply 20, 185
RET 4 dc output return 22
Not used For internal test only;
not for customer use. 4, 5, 9, 10 29, 27, 26
No Conn No internal connection;
customer can use.
30, 28, 25,
24, 23
1
Connect chassis ground to equipment grounding stud. These are not internally connected.
2T
erminals 12 and 14 are internally connected.
3T
erminals 1 1 and 13 are internally connected.
4T
erminals 17 and 19 must be externally connected by customer to accommodate amperage rating.
5T
erminals 20 and 18 must be externally connected by customer to accommodate amperage rating.
6
IN (G) = input module group.
7
OUT (G) = output module group.
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SW1
SW2
Open cover to
access switches
1
30 1
30
Position = 1Position = 0
End View
87654321
0 1
87654321
0 1
ATTENTION: Cycle power to the module after
setting the switches.
Default Switch
Settings = 0
Installation Instructions
Block I/O
Cat. No. 1791-16BC Series B
6
Figure 6
Switch Settings
SW2–8
Not used
SW2–7 Filter Speed Select
(Inputs only)
0 Slow
1 Fast
SW2–6 Last I/O Group
(PLC-2 only)
0 Not last rack
1 Last rack
SW2–5 Processor
Restart/Lockout (PRL)
0 Processor Restart
1 Processor Lockout
SW2–4 Hold Last State
0 Reset Outputs
1 Hold Last State
SW2–3
Set to 0
Communication Rate
SW2–2 SW2–1 Bits/s
0 0 57.6 K
0 1 115.2 K
1 0 230.4 K
1 1 230.4 K
Starting Quarter
SW1–2 SW1–1 Module Group
0 0 0 (1st)
0 1 2 (2nd)
1 0 4 (3rd)
1 1 6 (4th)
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Installation Instructions
Block I/O
Cat. No. 1791-16BC Series B
7
1747-SN
Rack
1771-SN
Rack
PLC–2
Rack
PLC–5
Rack
PLC–5/250
Rack
PLC–3
Rack
SW1 Switch Position
R
ac
k
Number
R
ac
k
Number
R
ac
k
Number
R
ac
k
Number
R
ac
k
Number
R
ac
k
Number 8 7 6 5 4 3
Rack 0 Rack 1 Rack 1 Not V alid Rack 0 Rack 0 0 0 0 0 0 0
Rack 1 Rack 2 Rack 2 Rack 1 Rack 1 Rack 1 0 0 0 0 0 1
Rack 2 Rack 3 Rack 3 Rack 2 Rack 2 Rack 2 0 0 0 0 1 0
Rack 3 Rack 4 Rack 4 Rack 3 Rack 3 Rack 3 0 0 0 0 1 1
Rack 5 Rack 5 Rack 4 Rack 4 Rack 4 0 0 0 1 0 0
Rack 6 Rack 6 Rack 5 Rack 5 Rack 5 0 0 0 1 0 1
Rack 7 Rack 7 Rack 6 Rack 6 Rack 6 0 0 0 1 1 0
Rack 7 Rack 7 Rack 7 0 0 0 1 1 1
Rack 10 Rack 10 Rack 10 0 0 1 0 0 0
Rack 1 1 Rack 1 1 Rack 1 1 0 0 1 0 0 1
Rack 12 Rack 12 Rack 12 0 0 1 0 1 0
Rack 13 Rack 13 Rack 13 0 0 1 0 1 1
Rack 14 Rack 14 Rack 14 0 0 1 1 0 0
Rack 15 Rack 15 Rack 15 0 0 1 1 0 1
Rack 16 Rack 16 Rack 16 0 0 1 1 1 0
Rack 17 Rack 17 Rack 17 0 0 1 1 1 1
Rack 20 Rack 20 Rack 20 0 1 0 0 0 0
Rack 21 Rack 21 Rack 21 0 1 0 0 0 1
Rack 22 Rack 22 Rack 22 0 1 0 0 1 0
Rack 23 Rack 23 Rack 23 0 1 0 0 1 1
Rack 24 Rack 24 Rack 24 0 1 0 1 0 0
Rack 25 Rack 25 Rack 25 0 1 0 1 0 1
Rack 26 Rack 26 Rack 26 0 1 0 1 1 0
Rack 27 Rack 27 Rack 27 0 1 0 1 1 1
Rack 30 Rack 30 0 1 1 0 0 0
Rack 31 Rack 31 0 1 1 0 0 1
Rack 32 Rack 32 0 1 1 0 1 0
Rack 33 Rack 33 0 1 1 0 1 1
Rack 34 Rack 34 0 1 1 1 0 0
Rack 35 Rack 35 0 1 1 1 0 1
Rack 36 Rack 36 0 1 1 1 1 0
Rack 37 Rack 37 0 1 1 1 1 1
Rack 40 1 0 0 0 0 0
Rack 41 1 0 0 0 0 1
Rack 42 1 0 0 0 1 0
Rack 43 1 0 0 0 1 1
Rack 44 1 0 0 1 0 0
Rack 45 1 0 0 1 0 1
Rack 46 1 0 0 1 1 0
Rack 47 1 0 0 1 1 1
Rack 50 1 0 1 0 0 0
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Installation Instructions
Block I/O
Cat. No. 1791-16BC Series B
8
SW1 Switch Position
PLC–3
Rack
Number
PLC–5/250
Rack
Number
PLC–5
Rack
Number
PLC–2
Rack
Number
1771-SN
Rack
Number
1747-SN
Rack
Number 345678
PLC–3
Rack
Number
PLC–5/250
Rack
Number
PLC–5
Rack
Number
PLC–2
Rack
Number
1771-SN
Rack
Number
1747-SN
Rack
Number
Rack 51 1 0 1 0 0 1
Rack 52 1 0 1 0 1 0
Rack 53 1 0 1 0 1 1
Rack 54 1 0 1 1 0 0
Rack 55 1 0 1 1 0 1
Rack 56 1 0 1 1 1 0
Rack 57 1 0 1 1 1 1
Rack 60 1 1 0 0 0 0
Rack 61 1 1 0 0 0 1
Rack 62 1 1 0 0 1 0
Rack 63 1 1 0 0 1 1
Rack 64 1 1 0 1 0 0
Rack 65 1 1 0 1 0 1
Rack 66 1 1 0 1 1 0
Rack 67 1 1 0 1 1 1
Rack 70 1 1 1 0 0 0
Rack 71 1 1 1 0 0 1
Rack 72 1 1 1 0 1 0
Rack 73 1 1 1 0 1 1
Rack 74 1 1 1 1 0 0
Rack 75 1 1 1 1 0 1
Rack 76 1 1 1 1 1 0
Not V alid 1 1 1 1 1 1
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-5/250 processors can scan racks 00–37.
The SLC 500 controllers communicate with the block I/O using an I/O Scanner
module (cat. no. 1747-SN series A). Refer to the user manual for the 1747-SN/A
Scanner module for more information.
Important: This block I/O module is not compatible with the 1747-DSN
Distributed I/O Scanner module.
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Installation Instructions
Block I/O
Cat. No. 1791-16BC Series B
9
Termination Resistor
A termination resistor must be installed on the last block in a series. Connect the
resistor as shown in Figure 7.
Figure 7
Installing the T ermination Resistor
Termination
Resistor
Connect
termination resistor across
terminals 6 (BLU) and 8 (CLR).
10835–I
BLU
SHD
CLR
150 ohm – 57.6K and 1 15.2K bits/s
82 ohm – 230.4K bits/s
ATTENTION: Devices that are operating at 230.4K bits/s must have
82 ohm terminators in place for proper operation.
Indicators
PLC SLC
OUTIN
00
01
02
03
04
05
06
07
10
11
12
13
14
15
16
17
COMM
STATUS
00
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
COMM
STATUS
00
01
02
03
04
05
06
07
10
11
12
13
14
15
16
17
00
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
G G
OUTIN
G G
Indicator Description
COMM OFF
ON
Flashing
Communication not established
Communication established
Processor in Program mode
STATUS OFF
ON
Flashing
Normal
Error (hardware or software), block power low
COMM F AIL – communication cable disconnected, 100ms between valid frames, no
more than 255 valid frames between valid frames addressed to block, 20ms idle
time exceeded.
COMM and ST A TUS will alternately flash when processor restart lockout is selected, a fault has occurred and the processor
is communicating with the block.
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Installation Instructions
Block I/O
Cat. No. 1791-16BC Series B
10
Fusing
The block I/O module is internally fused to protect the module. No external
power fusing is required.
The outputs of the block I/O modules are not fused. Fusing of outputs is
recommended. If desired to fuse an output, you must provide external fusing.
T
able C
Recommended Fuses
Type of
Circuit Part Number1Size Rating in Amps
Maximum Surge Current2
(repeatable every 2s)
dc
Littelfuse 322 1.25 0.25 in. x 1.25 in. 1.25A 2.25A for 50ms
d
cSAN-O MQ4-800 5mm x 20mm 800mA32.0A for 50ms
1Note:
Do not substitute another fuse for those listed.
2
The recommended fuses will withstand surges of the above listed currents for the time specified.
3
Current must be limited to 650mA when using this fuse.
Block I/O modules are derated linearly above 30oC up to and including 60oC.
T
able D
Output Ratings and Non-fused Surge Currents
Catalog
Number Voltage Mounting Max. Output Rating: @ 30oC @ 60oC
Maximum Surge Current1
(repeatable every 2s)
1791-16BC/B
24V dc
Vertical 1A 500mA
3A for 50ms
1791
-
16BC/B
24V
d
cHorizontal 500mA 250mA
3A
f
or
50
ms
1
These surge ratings are for non-fused outputs only .
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Installation Instructions
Block I/O
Cat. No. 1791-16BC Series B
11
1791-16BC Specifications
Input Specifications
Inputs per Block 16 – 2 groups of 8
On-state Voltage Range 10–30V dc
On-state Current Maximum
Minimum
11.0mA @ 30V
2.5mA @ 10V
Off-state Voltage Maximum 5V dc
Off-state Current Minimum 1.5mA
Input Impedance Maximum 3.4K ohms
Input Signal Delay Fast
Slow
1.0ms on; 5.0ms off (maximum)
1.0ms on; 18.0ms off (maximum)
Output Specifications
Outputs per Block 16 – 2 groups of 8
Output Voltage Range 10–30V dc
Output Current Rating
Vertical Mtg.
Horizontal Mtg.
500mA @ 60oC, 1A @ 30oC
250mA @ 60oC, 500mA @ 30oC
Surge Current 3A for 50ms each,
repeatable every 2 sec.
Minimum On-state Current 1mA per output
Maximum On-state Voltage Drop 1.0V @ rated current
Off-state Leakage Current (maximum) 0.5mA
Output Signal Delay 0.5ms on; 1.0ms off (maximum)
Specifications continued on next page
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Installation Instructions
Block I/O
Cat. No. 1791-16BC Series B
12
1791-16BC Specifications
General Specifications
External Power (internally protected -
no external fuse required)
Voltage
Current
19.2–30V dc
300mA
Dimensions Inches
Millimeters
6.95H X 4.35W X 3.85D
176.5H X 110.5W X 98D
Isolation Power supply to RIO
I/O Group-to-Group
I/O Group-to-Logic
500V ac
500V ac
500V ac
Power Dissipation Maximum 17.8 Watts
Thermal Dissipation Maximum 60.6 BTU/hr
Environmental Conditions
Operational Temperature
Storage Temperature
Relative Humidity
0 to 60oC (32 to 140oF)
–40 to 85oC (–40 to 185oF)
5 to 95% noncondensing
Conductors Wire Size
Category
14 gauge (2mm2) stranded maximum
3/64 inch insulation maximum
21
1You
use this conductor category information for planning conductor routing as described in the system
level installation manual.
With offices in major cities worldwide
WORLD HEADQUARTERS
Allen-Bradley
1201 South Second Street
Milwaukee, WI 53204 USA
Tel: [phone]
Telex: 43 11 016
FAX: [phone]
Publication 1791-2.20 – March 1994
Supersedes publication 1791-2.20 – April 1993
PN 955117–4
4
Copyright 1994 Allen-Bradley Company, Inc. Printed in US
A
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

Artisan Technology Group is your source for quality
new and certied-used/pre-owned equipment
• FAST SHIPPING AND
DELIVERY
• TENS OF THOUSANDS OF
IN-STOCK ITEMS
• EQUIPMENT DEMOS
• HUNDREDS OF
MANUFACTURERS
SUPPORTED
• LEASING/MONTHLY
RENTALS
• ITAR CERTIFIED
SECURE ASSET SOLUTIONS
SERVICE CENTER REPAIRS
Experienced engineers and technicians on staff
at our full-service, in-house repair center
WE BUY USED EQUIPMENT
Sell your excess, underutilized, and idle used equipment
We also offer credit for buy-backs and trade-ins
www.artisantg.com/WeBuyEquipment
REMOTE INSPECTION
Remotely inspect equipment before purchasing with
our interactive website at www.instraview.com
LOOKING FOR MORE INFORMATION?
Visit us on the web at www.artisantg.com for more
information on price quotations, drivers, technical
specications, manuals, and documentation
Contact us: (888) 88-SOURCE | [e-mail] | www.artisantg.com
SM
View
Instra