Digital I/O Conversion Module
(Cat 1492-CM1771-LD010F)
I. Module
This Digital I/O Conversion Module provides for the conversion of (1) 1771, 16 point I/O modules to be converted to
(1) 1756, 16 point I/O module and consists of the following:
(1) 1771 Module (16pt) to (1) 1756 Module (16pt)
(2) Conversion Module: 1492-CM1771-LD010F
(1) Cable: 1492-CONCAB005Y (Table 2)
(1) Conversion Mounting Assembly: 1492-MUA… (Table 1)
This conversion is accomplished without the removal of any field wires from the existing 1771 Swing Arm. The existing 1771 Swing Arm fits directly onto the edge connector of the 1492 Conversion Module. On one end of the 1492
Cable is (1) connector for the Conversion Module. On the other end is the Removable Terminal Block (RTB) for the
1756 I/O module, as shown in the photo below. The I/O signals are routed through the 1492 Conversion Module and
the 1492 Cable to the appropriate terminals on the 1756 I/O module per the Wiring Diagrams in Section VI. As standard, both portions of the 1492 Cables are 0.5M long, but we also offer a 1.0M cable length. Refer to the footnotes
in Table 2, Section III for further details.
WARNING
Conversion Compatibility and
Product I.D. Label
37-Pin Connector for cable 1492-CONCAB005
1492-CM1771-LD010F Conversion Module
De-energize and lockout any and all power to all I/O field devices connected to the A-B 1771 I/O
chassis, and the power to the 1771 I/O chassis itself. Ensure all power is de-energized and locked out
to any device in the control cabinet where the conversion is to be performed. Ensure work is
performed by qualified personnel.
Y
PN-114282
DIR 10000060093 (Version 01)
Publication 1492-IN040B-EN-E
Printed in U.S.A.
II. Installation
The 1492 Conversion Modules must be installed in a 1492 Conversion Mounting Assembly (see Table 1 below). A
complete System Installation Manual ships with the 1492 Conversion Mounting Assembly.
1) Determine the quantity of each type of 1771 I/O modules used in the 1771 I/O Chassis to be converted.
2) Select the applicable 1492 Conversion Modules from Table 2, Section III.
3) Review the Max Slots for I/O and Chassis Width data from the Table 1 below.
4) Select a 1756 I/O Chassis which has enough I/O Slots.
NOTE: (2) I/O slots are required in the 1756 Chassis for conversions where (1) 1771 I/O module converts to (2) 1756 I/O
modules.
5) Select the 1492 Conversion Mounting Assembly which has enough Conversion Module slots.
NOTE: (2) Conversion Module slots are required in the 1492 Conversion Mounting Assembly for conversions where (2)
1771 I/O module convert to (1) 1756 I/O modules.
NOTE: The 1492 Conversion Mounting Assembly has the same Height & Width foot-print as the 1771 Chassis and is
designed to use the same mounting hardware. The combined Depth of the 1492 Conversion Mounting Assembly with the
1756 Chassis mounted on top is 10.25 inches (Controller w/key) or 10.0 inches (Controller w/o key). Dimension drawings
are included in the System Installation Manual that ships with the 1492 Conversion Mounting Assembly.
1771 Chassis 1756 Chassis Conversion Mounting Assembly
Max
Cat. No.
1771-A1B 4 9.01 12.61
1771-A2B 8 14.01 17.61
1771-A3B1
1771-A4B 16 24.01
Slots
I/O
Chassis Width
without
for
Power
Supply
12 19.01
with
Power
Supply
Cat. No.
1756-A4
1756-A7
1756-A7
1756-A10
1756-A10
1756-A13
1756-A13
1756-A17
Max
Slots
Chassis
for
I/O
12 23.15
12 23.15
16 29.06
Width
3 10.35
6 14.49
6 14.49
9 19.02
9 19.02
Max Slots
Cat. No.
1492-MUA1B-A4-A7 4 9.01
1492-MUA2B-A7-A10 8 14.01
1492-MUA3-A10-A13 12 19.01
1492-MUA4-A13-A17 16 24.01
for
Conversion
Modules
Chassis
Width
t Notes:
1771-A3B is not listed as it is used for 19 inch wide instrumentation panels.
Notice that the 1756 Chassis Width sometimes exceeds the 1771 Chassis Width, with or without the Power Supply. The
Cover-Plate of the 1492 Conversion Mounting Assembly allows the 1756 Chassis to be Left justified, Right justified or
Centered. A complete System Installation Manual ships with the 1492 Conversion Mounting Assembly.
PN-114282
DIR 10000060093 (Version 01)
Publication 1492-IN040B-EN-E
(2)
III. Compatibility
Table 2: Bulletin 1771 to 1756 Conversion Modules and Cables
1771
Digital I/O Module
1756
Digital I/O Module
1492
Conversion Module
1492
Cable
1771-ODD 1756-OA16I 1492-CM1771-LD010F 1492-CONCAB005Y
1771-OD16 1756-OA16I
1771-OQ16
1756-OB16I
1492-CM1771-LD010F
1492-CM1771-LD010F
1492-CONCAB005Y
1492-CONCAB005Y
oot Notes:
To understand any issues concerning I/O module compatibility, refer to the Installation Manuals for the specific 1771
and 1756 I/O modules involved.
The 3 numbers indicate the cable length of each portion of the 1492 Cable. Recommended cable lengths of 0.5M
are shown. Additional cable lengths are as follows:
1.0M = 1492-CONCAB010Y
IV. Conversion Module Specifications
(Operating specifications are when installed in the Conversion System base / cover-plate assembly)
Specification
Dimensions
11.81 in. (height) x 4.38 in. (depth) x 1.5 in. (width)
Value
300 mm. (height) x 111.25 mm (depth) x 38.1 mm (width)
Approximate Shipping Weight
Storage Temperature -40 to +85°C (-40 to +185°F)
Operating Temperature
Operating Humidity
Shock
Non-operating
Operating
Operating Vibration
Maximum Operating Voltage
Max. Module Operating Current
Per Point:
Per Module:
Fusing
Agency Certifications
Pollution Degree
271.9 g (0.60 lbs) (includes carton)
0 to 60°C (32 to 140°F)
5 to 95% at 60°C (non-condensing)
50g
30g
2g at 10 to 500Hz (Agrees with 1756 I/O module specifications)
132 Vac at 47 to 63Hz
1 Amp
4 Amps
NOTICE
Refer to the Wiring Diagram(s) for
current limits for a specific configuration.
Sixteen, 1.5 Amps (maximum current based on convension
components)
UL Classified: Under UL File Number E113724
CSA
compliant for all applicable directives
CE:
4 Amps
2
Environmental Rating
PN-114282
DIR 10000060093 (Version 01)
Publication 1492-IN040B-EN-E
IP20
(3)
V. Fuse Installation and Replacement
The 1492-CM1771-LD010F conversion module has sixteen (16) mechanical fuse holders with fuses located on the
circuit board inside the modules plastic case. The following explains how to replace the fuses.
1) Remove the 4 screws that hold both halves of the conversion module case together (refer to the following
Figure A).
FIGURE A
2) Disassemble both case halves so you can access the module’s circuit board. Remove and replace the fuse or
fuses (refer to the below Figure B).
Sixteen Fuse Holders and Fuses
FIGURE B
3) Reassemble the two case halves to the circuit board and replace the four screws that hold the case together
Do NOT over torque the screws (Maximum torque is 5.0 in-lbs.)
NOTES:
1) For module operation a fuse must be inserted into the fuse holder
2) Physical Fuse Size: 2AG
3) Possible Fuse Supplier: LittelFuse (Part Number: 22901.5P)
4) Maximum Fuse Current rating based on Conversion System Components: 1.5 Amps
PN-114282
DIR 10000060093 (Version 01)
Publication 1492-IN040B-EN-E
(4)
VI. Wiring Diagrams
Conversion: 1771-ODD to 1756-OA16I
L1
L2
WARNING
LOAD
There are several key application considerations and system specifications (bottom of drawing) when
using these components (conversion module, cable and input module). Read and understand these
considerations before installation.
Conversion Module
1492-CM1771-LD010F
Not Used
Not Used
Not Used
Not Used
L1-0
Ouput 0
L1-1
Ouput 1
L1-2
Ouput 2
L1-3
Ouput 3
L1-4
Ouput 4
L1-5
Ouput 5
L1-6
Ouput 6
L1-7
Ouput 7
L1-8
Ouput 8
L1-9
Ouput 9
L1-10
Ouput 10
L1-11
Ouput 11
L1-12
Ouput 12
L1-13
Ouput 13
L1-14
Ouput 14
L1-15
Ouput 15
Not Used
Not Used
Not Used
Not Used
9
10
19
20
2
1
4
3
6
5
8
7
12
11
14
13
16
15
18
17
22
21
24
23
26
25
28
27
32
31
34
33
36
35
38
37
29
30
39
40
1
2
3
4
Orange
5
Blue
6
7
White/Black
8
Red/Black
Green/Black
9
10
Orange/Black
Blue/Black
11
Black/White
12
Red/White
13
Green/White
14
Blue/White
15
Black/Red
16
White/Red
17
Orange/Red
18
Blue/Red
19
Red/Green
20
Orange/Green
21
Black/White/Red
22
23
White/Black/Red
24
Red/Black/White
Green/Black/White
25
26
Orange/Black/White
Blue/Black/White
27
Black/Red/Green
28
White/Red/Green
29
Red/Black/Green
30
Green/Black/Orange
31
Orange/Black/Green
32
Blue/White/Orange
33
Black/White/Orange
34
White/Red/Orange
35
Orange/White/Blue
36
37
Cable
1492-CONCAB005Y
2
1
4
3
6
5
8
7
10
9
12
11
14
13
16
15
18
17
20
19
22
21
24
23
26
25
28
27
30
29
32
31
1756-OA16I
L1-0
OUT-0
L1-1
OUT-1
L1-2
OUT-2
L1-3
OUT-3
L1-4
OUT-4
L1-5
OUT-5
L1-6
OUT-6
L1-7
OUT-7
L1-8
OUT-8
L1-9
OUT-9
L1-10
OUT-10
L1-11
OUT-11
L1-12
OUT-12
L1-13
OUT-13
L1-14
OUT-14
L1-15
OUT-15
1771-WH Swing Arm
From 1771-ODD
Conversion Module Installation and Application Considerations
This Bul. 1492 cable consists of a cable wired to one 1756-OA16I RTB. Recommended cable lengths of 0.5M or 1.0M
(005=0.5M, 010=1.0M). See table 2 for other lengths.
The 1771-ODD module output current limits versus 1756-OA16I limits are as follows:
1771-ODD 1756-OA16I w/ 1492-CONCAB005Y
a) Current/Point 2A 2A
b) Current/Module 8A 5A
c) Surge Current/Point 20A for 100ms 20A for 43ms
The 1771-ODD has sixteen (16) 3A, 250V rectifier fuses. The 1756-OA16I is NOT fused, as such sixteen(16) 2AG fuses
and clips are provided on the 1492-CM1771-LD010F conversion module. Max fuse rating is 1.5A based on 1756-OA16I.
The 1771-ODD is rated 74V to 138V AC. The 1756-OA16I is rated 74V to 265V AC.
Refer to your 1771-ODD and 1756-OA16I Installation Manual wiring schematics and diagrams for more details. Ensure 1756
output module ratings are not exceeded. [Reference Doc: 41171-009 (Version 00)]
PN-114282
DIR 10000060093 (Version 01)
Publication 1492-IN040B-EN-E
(5)
VI. Wiring Diagrams (Cont’d)
Conversion: 1771-OD16 to 1756-OA16I
WARNING
L1
L2
There are several key application considerations and system specifications (bottom of drawing) when
using these components (conversion module, cable and input module). Read and understand these
considerations before installation.
Conversion Module
1492-CM1771-LD010F
1
2
3
1492-CONCAB005Y
4
Orange
5
Blue
6
7
White/Black
8
Red/Black
Green/Black
9
10
Orange/Black
Blue/Black
11
Black/White
12
Red/White
13
Green/White
14
Blue/White
15
Black/Red
16
White/Red
17
Orange/Red
18
Blue/Red
19
Red/Green
20
Orange/Green
21
Black/White/Red
22
23
White/Black/Red
24
Red/Black/White
Green/Black/White
25
26
Orange/Black/White
Blue/Black/White
27
Black/Red/Green
28
White/Red/Green
29
Red/Black/Green
30
Green/Black/Orange
31
Orange/Black/Green
32
Blue/White/Orange
33
Black/White/Orange
34
White/Red/Orange
35
Orange/White/Blue
36
37
Cable
2
1
4
3
6
5
8
7
10
9
12
11
14
13
16
15
18
17
20
19
22
21
24
23
26
25
28
27
30
29
32
31
1756-OA16I
L1-0
OUT-0
L1-1
OUT-1
L1-2
OUT-2
L1-3
OUT-3
L1-4
OUT-4
L1-5
OUT-5
L1-6
OUT-6
L1-7
OUT-7
L1-8
OUT-8
L1-9
OUT-9
L1-10
OUT-10
L1-11
OUT-11
L1-12
OUT-12
L1-13
OUT-13
L1-14
OUT-14
L1-15
OUT-15
LOAD
Not Used
Not Used
Not Used
Not Used
L1-0
Output 0
L1-1
Output 1
L1-2
Output 2
L1-3
Output 3
L1-4
Output 4
L1-5
Output 5
L1-6
Output 6
L1-7
Output 7
L1-8
Output 8
L1-9
Output 9
L1-10
Output 10
L1-11
Output 11
L1-12
Output 12
L1-13
Output 13
L1-14
Output 14
L1-15
Output 15
Not used
Not used
Not used
Not used
9
10
19
20
2
1
4
3
6
5
8
7
12
11
14
13
16
15
18
17
22
21
24
23
26
25
28
27
32
31
34
33
36
35
38
37
29
30
39
40
1771-WN Swing Arm
From 1771-OD16
Conversion Module Installation and Application Considerations
This Bul. 1492 cable consists of a cable wired to one 1756-OA16I RTB. Recommended cable lengths of 0.5M or 1.0M
(005=0.5M, 010=1.0M). See table 2 for other lengths.
The 1771-OD16 module output current limits versus 1756-OA16I limits are as follows:
1771-OD16 1756-OA16I w/ 1492-CONCAB005Y
a) Current/Point 2A 1A
b) Current/Module 8A 4A
b) Surge Current/Point 20A for 100ms 20A for 43ms
The 1771-OD16 has sixteen (16) 3A ,250V recifier fuses. The 1756-OA16I is NOT fused,as such sixteen (16) 2AG fuse
clips are provided on the 1492-CM1771-LD010F conversion module. Max fuse rating is 1.5A based on 1756-OA16I.
The 1771-OD16 is rated 74V to 138V AC and 105V to 138V DC. The 1756-OA16I is rated 74V to 265V AC. A1756 isolated
output module with an equivalent DC voltage range to convert the1771 -OD16 is not available.
Refer to your 1771-OD16 and 1756-OA16I Installation Manual wiring schematics and diagrams for more details. Ensure 1756
output module rating are not exceeded. [Reference Doc: 41170-939 (Version 01)]
PN-114282
DIR 10000060093 (Version 01)
Publication 1492-IN040B-EN-E
(6)
VI. Wiring Diagrams (Cont’d)
Conversion: 1771-OQ16 to 1756-OB16I
WARNING
+
-
There are several key application considerations and system specifications (bottom of drawing) when
using these components (conversion module, cable and input module). Read and understand these
considerations before installation.
Conversion Module
1492-CM1771-LD010F
1
2
3
4
Orange
5
Blue
6
7
White/Black
8
Red/Black
Green/Black
9
10
Orange/Black
Blue/Black
11
Black/White
12
Red/White
13
Green/White
14
Blue/White
15
Black/Red
16
White/Red
17
Orange/Red
18
Blue/Red
19
Red/Green
20
Orange/Green
21
Black/White/Red
22
23
White/Black/Red
24
Red/Black/White
Green/Black/White
25
26
Orange/Black/White
Blue/Black/White
27
Black/Red/Green
28
White/Red/Green
29
Red/Black/Green
30
Green/Black/Orange
31
Orange/Black/Green
32
Blue/White/Orange
33
Black/White/Orange
34
White/Red/Orange
35
Orange/White/Blue
36
37
Cable
1492-CONCAB005Y
2
1
4
3
6
5
8
7
10
9
12
11
14
13
16
15
18
17
20
19
22
21
24
23
26
25
28
27
30
29
32
31
1756-OB16I
DC-0
OUT-0
DC-1
OUT-1
DC-2
OUT-2
DC-3
OUT-3
DC-4
OUT-4
DC-5
OUT-5
DC-6
OUT-6
DC-7
OUT-7
DC-8
OUT-8
DC-9
OUT-9
DC-10
OUT-10
DC-11
OUT-11
DC-12
OUT-12
DC-13
OUT-13
DC-14
OUT-14
DC-15
OUT-15
LOAD
Not Used
Not Used
Not Used
Not Used
DC-0
Ouput 0
DC-1
Ouput 1
DC-2
Ouput 2
DC-3
Ouput 3
DC-4
Ouput 4
DC-5
Ouput 5
DC-6
Ouput 6
DC-7
Ouput 7
DC-8
Ouput 8
DC-9
Ouput 9
DC-10
Ouput 10
DC-11
Ouput 11
DC-12
Ouput 12
DC-13
Ouput 13
DC-14
Ouput 14
DC-15
Ouput 15
Not Used
Not Used
Not Used
Not Used
9
10
19
20
2
1
4
3
6
5
8
7
12
11
14
13
16
15
18
17
22
21
24
23
26
25
28
27
32
31
34
33
36
35
38
37
29
30
39
40
1771-WN Swing Arm
From 1771-OQ16
Conversion Module Installation and Application Considerations
This Bul. 1492 cable consists of a cable wired to one 1756-OB16I RTB. Recommended cable lengths of
0.5M or 1.0M (005=0.5M, 010=1.0M). See table 2 for other lengths.
The 1771-OQ16 module output current limits versus 1756-OB16I limits are as follows:
1771-OQ16 1756-OB16I w/ 1492-CONCAB005Y
a) Current/Point 2A 2A
b) Current/Module 32A 8A
c) Surge Current/Point 4A for 10ms 4A for 10ms
The 1771-OQ16 has sixteen (16) 3A, 250V rectifier fuses. The 1756-OB16I is NOT fused, as such sixteen(16) 2AG fuses
and clips are provided on the 1492-CM1771-LD010F conversion module. Max fuse rating is 1.5A based on 1756-OA16I.
The 1771-OQ16 is rated 10V to 32V DC. The 1756-OB16I is rated 10V to 30V DC.
Refer to your 1771-OQ16 and 1756-OB16I Installation Manual wiring schematics and diagrams for more details. Ensure
1756 output module ratings are not exceeded. [Reference Doc: 41171-010 (Version 00)]
PN-114282
DIR 10000060093 (Version 01)
Publication 1492-IN040B-EN-E
(7)
PN-114282
DIR 10000060093 (Version 01)
Publication 1492-IN040B-EN-E
Printed in U.S.A.
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