Allen-Bradley 1791-16BC User manual

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Instra

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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