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Field Wire Conversion Module for A-B 1771-ID16 to 1756-IA16I or 1756-IH16I or 1771-IQ16 to 1756-IB16I
(Cat 1492-CM1771-LD004)
Local language (French, Italian, German & Spanish) versions of this document can be downloaded by going to www.ab.com.
In the left margin click on Publications Library and Literature Library. In the Search Area (right margin), Search by Catalog
Number and in the Search box type in the catalog number of the conversion system component.
I. Module Description
The 1492-CM1771-LD004 conversion module provides field wire signal conversion from an A-B 1771-ID16, 74 to
138Vac or 105 to 138Vdc, 16 point individually isolated input module to a 1756-IA16I, 79 to 132Vac , 16 point individually isolated input module or a 1756-IH16I, 90 to 146Vdc, 16 point individually isolated input module. The
1492-CM1771-LD004 conversion module also provides field wire signal conversion from an A-B 1771-IQ16, 10 to
32Vdc, 16 point individually isolated input module to a 1756-IB16I, 10 to 30Vdc , 16 point individually isolated input module. The conversion module provides the mating connector to the 1771-ID16 or 1771-IQ16 module swing-arm/terminal block with the attached field wires. It routes those signals via its 37-pin connector and a
1492-CONCAB Y pre-wired cable to compatible terminals on the 1756-IA16I, 1756-IH16I or 1756-IB16I (refer to
Wiring Diagrams on page 2, 3 and 4 for details).
Conversion Compatibility and
Product I.D. Label
37-Pin Connector for cable 1492-CONCAB Y
1492-CM1771-LD004 Conversion Module
WARNING 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.
Refer to conversion module Specifications Section: Maximum Operating Voltage
II. Module Installation
The 1492-CM1771-LD004 conversion module must be installed in a 1492 conversion base-plate and cover-plate assembly. The installation of the module into the assembly is explained in the Installation Manual that ships with the conversion assembly. For a list of compatible assemblies refer to Appendix A.
III. Conversion Module Compatibility Matrix
Conversion Module Compatible 1771
Input Module
1492-CM1771-LD004 1771-ID16
1492-CM1771-LD004
1492-CM1771-LD004
1771-ID16
1771-IQ16
Compatible 1756
Input Module
1756-IA16I
1756-IH16I
1756-IB16I
Required 1492 Cable
1492-CONCAB
1492-CONCAB
1492-CONCAB
This is cable length in meters. Available lengths are limited to 005 (0.5m) and 010 (1.0m).
Y
Y
Y
PN-40377
DIR 10000045373 (Version 00)
Printed in U.S.A.
IV. Conversion Module Wiring Diagram
The following diagrams show the connections from the existing 1771-ID16 and 1771-IQ16 swing-arm, through the conversion module, 1492 cables and to the 1756-IA16I, 1756-IH16I or 1756-IB16I input module. The diagram can be used as an aid in possible system troubleshooting.
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.
L2
L1
Conversion: 1771-ID16 to 1756-IA16I with 1492-CM1771-LD004
1492-CM1771-LD004
Input 15
L2-16
Input 16
L2-17
Input 17
Not used
Not used
Not used
Not used
Not used
Input 7
L2-10
Input 10
L2-11
Input 11
L2-12
Input 12
L2-13
Input 13
L2-14
Input 14
L2-15
L2-0
Input 0
L2-1
Input 1
L2-2
Input 2
L2-3
Input 3
L2-4
Input 4
L2-5
Input 5
L2-6
Input 6
L2-7
Not used
Not used
Not used
34
33
36
35
38
37
9
10
19
20
29
30
39
40
8
16
15
18
17
7
12
11
14
13
22
21
24
23
26
25
28
27
32
31
3
6
5
2
1
4
27
28
29
30
23
24
25
26
19
20
21
22
15
16
17
18
31
32
33
34
35
36
37
9
10
11
12
13
14
7
8
5
6
3
4
1
2
1492-CONCAB005Y
Orange
Blue
White/Black
Red/Black
Green/Black
Orange/Black
Blue/Black
Black/White
Red/White
Green/White
Blue/White
Black/Red
White/Red
Orange/Red
Blue/Red
Red/Green
Orange/Green
Black/White/Red
White/Black/Red
Red/Black/White
Green/Black/White
Orange/Black/White
Blue/Black/White
Black/Red/Green
White/Red/Green
Red/Black/Green
Green/Black/Orange
Orange/Black/Green
Blue/White/Orange
Black/White/Orange
White/Red/Orange
Orange/White/Blue
1756-IA16I
L2-9
IN-9
L2-10
IN-10
L2-11
IN-11
L2-12
IN-12
L2-13
IN-13
L2-14
IN-14
L2-15
IN-15
L2-4
IN-4
L2-5
IN-5
L2-6
IN-6
L2-7
IN-7
L2-8
IN-8
L2-0
IN-0
L2-1
IN-1
L2-2
IN-2
L2-3
IN-3
30
29
32
31
26
25
28
27
22
21
24
23
18
17
20
19
14
13
16
15
10
9
12
11
8
7
6
5
4
3
2
1
1771-WN Swing Arm
Conversion Module Installation and Application Considerations
The input delay times for the 1771-ID16 module versus 1756-IA16I module are as follows: a) Off-to-On Delay
1771-ID16
0.57ms
1756-IA16I
10ms max (plus selectable filter) b) On-to-Off Delay 9ms or 18ms (selectable) 8ms max (plus selectable filter)
The 1771-ID16 module is rated 74V to 138V AC and105V to 138V DC. The 1756-IA16I is rated 79V to 132V AC. If the input source voltage is DC use a 1756-IH16I with this conversion module.
Refer to your 1771-ID16 and 1756-IA16I Installation Manual wiring schematics and diagrams for more details.
[Reference Doc: 41170-931 (Version 01)]
PN-40377
DIR 10000045373 (Version 00)
(2)
IV. Conversion Module Wiring Diagram (Continued)
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: 1771-ID16 to 1756-IH16I with 1492-CM1771-LD004
1492-CM1771-LD004
Input 15
L2-16
Input 16
L2-17
Input 17
Not used
Not used
Not used
Not used
Not used
Not used
Not used
Not used
L2-0
Input 0
L2-1
Input 1
L2-2
Input 2
L2-3
Input 3
L2-4
Input 4
L2-5
Input 5
L2-6
Input 6
L2-7
Input 7
L2-10
Input 10
L2-11
Input 11
L2-12
Input 12
L2-13
Input 13
L2-14
Input 14
L2-15
16
15
18
17
7
12
11
14
13
22
21
24
23
26
25
28
27
32
31
34
33
3
6
5
2
1
4
8
9
10
19
20
29
30
39
40
36
35
38
37
Orange
Blue
White/Black
Red/Black
Green/Black
Orange/Black
Blue/Black
Black/White
Red/White
Green/White
Blue/White
Black/Red
White/Red
Orange/Red
Blue/Red
Red/Green
Orange/Green
Black/White/Red
White/Black/Red
Red/Black/White
Green/Black/White
Orange/Black/White
Blue/Black/White
Black/Red/Green
White/Red/Green
Red/Black/Green
Green/Black/Orange
Orange/Black/Green
Blue/White/Orange
Black/White/Orange
White/Red/Orange
Orange/White/Blue
27
28
29
30
23
24
25
26
19
20
21
22
15
16
17
18
31
32
33
34
35
36
37
9
10
11
12
13
14
7
8
5
6
3
4
1
2
1492-CONCAB005Y
30
29
32
31
26
25
28
27
22
21
24
23
18
17
20
19
14
13
16
15
10
9
12
11
8
7
6
5
4
3
2
1
1756-IH16I
GND-8
IN-8
GND-9
IN-9
GND-10
IN-10
GND-11
IN-11
GND-12
IN-12
GND-13
IN-13
GND-14
IN-14
GND-15
IN-15
GND-0
IN-0
GND-1
IN-1
GND-2
IN-2
GND-3
IN-3
GND-4
IN-4
GND-5
IN-5
GND-6
IN-6
GND-7
IN-7
1771-WN Swing Arm
Conversion Module Installation and Application Considerations
The input delay times for the 1771-ID16 module versus 1756-IH16I module are as follows:
1771-ID16 1756-IH16I a) Off-to-On Delay 0.57ms 2ms max (plus selectable filter) b) On-to-Off Delay 9ms or 18ms (selectable) 6ms max (plus selectable filter)
The 1771-ID16 module is rated 74V to 138V AC and105V to 138V DC. The 1756-IH16I is rated 90V to 146V DC. If the input source voltage is AC use a 1756-IA16I with this conversion module.
Refer to your 1771-ID16 and 1756-IH16I Installation Manual wiring schematics and diagrams for more details.
[Reference Doc: 41170-932 (Version 01)]
PN-40377
DIR 10000045373 (Version 00)
(3)
IV. Conversion Module Wiring Diagram (Continued)
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: 1771-IQ16 to 1756-IB16I with 1492-CM1771-LD004
1492-CM1771-LD004
Sinking Input Example
-
+
+
-
Sourcing
Input
Example
24
23
26
25
28
27
32
31
34
33
36
35
38
37
9
10
19
20
29
30
39
40
3
6
5
2
1
4
8
16
15
18
17
7
12
11
14
13
22
21
Input 15
Gnd-16
Input 16
Gnd-17
Input 17
Not used
Not used
Not used
Not used
Not used
Not used
Not used
Not used
Gnd-0
Input 0
Gnd-1
Input 1
Gnd-2
Input 2
Gnd-3
Input 3
Gnd-4
Input 4
Gnd-5
Input 5
Gnd-6
Input 6
Gnd-7
Input 7
Gnd-10
Input 10
Gnd-11
Input 11
Gnd-12
Input 12
Gnd-13
Input 13
Gnd-14
Input 14
Gnd-15
Orange
Blue
White/Black
Red/Black
Green/Black
Orange/Black
Blue/Black
Black/White
Red/White
Green/White
Blue/White
Black/Red
White/Red
Orange/Red
Blue/Red
Red/Green
Orange/Green
Black/White/Red
White/Black/Red
Red/Black/White
Green/Black/White
Orange/Black/White
Blue/Black/White
Black/Red/Green
White/Red/Green
Red/Black/Green
Green/Black/Orange
Orange/Black/Green
Blue/White/Orange
Black/White/Orange
White/Red/Orange
Orange/White/Blue
27
28
29
30
23
24
25
26
19
20
21
22
15
16
17
18
31
32
33
34
35
36
37
9
10
11
12
13
14
7
8
5
6
3
4
1
2
1492-CONCAB005Y
30
29
32
31
26
25
28
27
22
21
24
23
18
17
20
19
14
13
16
15
10
9
12
11
8
7
6
5
4
3
2
1
1756-IB16I
Gnd-8
IN-8
Gnd-9
IN-9
Gnd-10
IN-10
Gnd-11
IN-11
Gnd-12
IN-12
Gnd-13
IN-13
Gnd-14
IN-14
Gnd-15
IN-15
Gnd-4
IN-4
Gnd-5
IN-5
Gnd-6
IN-6
Gnd-7
IN-7
Gnd-0
IN-0
Gnd-1
IN-1
Gnd-2
IN-2
Gnd-3
IN-3
1771-WN Swing Arm
Conversion Module Installation and Application Considerations
The input delay times for the 1771-IQ16 module versus 1756-IB16I module are as follows:
1771-IQ16 1756-IB16I a) Off-to-On Delay 0.57ms 1ms max (plus selectable filter) b) On-to-Off Delay 0.57ms 4ms max (plus selectable filter)
Both the 1771-IQ16 and 1756-IB16I allow operation with sourcing inputs. Refer to installation Instructions for details.
Refer to your 1771-IQ16 and 1756-IH16I Installation Manual wiring schematics and diagrams for more details.
[Reference Doc: 41170-933 (Version 01)]
PN-40377
DIR 10000045373 (Version 00)
(4)
V. 1492-CM1771-LD004 Conversion Module Specifications
(Operating specifications are when installed in the Conversion System base / cover-plate assembly)
Specification
Dimensions
Approximate Shipping Weight
Storage Temperature
Operating Temperature
Operating Humidity
Shock
Non
operating
Operating Vibration
Maximum Operating Voltage
Max. Module Operating Current
Per Module:
Value
11.81 in. (height) x 4.38 in. (depth) x 1.5 in. (width)
300 mm. (height) x 111.25 mm (depth) x 38.1 mm (width)
235.3 g (0.52 lbs) (includes carton)
-40 to +85°C (-40 to +185°F)
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 or 132 Vdc
Agency Certifications
Pollution Degree
Environmental Rating
2 Amps
12 Amps
NOTICE Refer to the Wiring Diagram(s) for current limits for a specific configuration.
UL Classified: Under UL File Number E113724
CSA
CE: compliant for all applicable directives
2
IP20
PN-40377
DIR 10000045373 (Version 00)
(5)
VI. Appendix A
1771 chassis to 1756 Chassis Conversion System Selection Process
1) Determine the number of 1771 I/O modules used in the 1771 I/O Chassis to be converted to 1756. NOTE: In some cases two 1756 modules may be required for one 1771 module. Select the applicable 1492 conversion modules from the
Digital and Analog Conversion Selection Table Matrix.
2) Review the Max Slots for I/O and Chassis Width data from the below table, and select a 1756 I/O Chassis which meets your conversion needs from Step 1. Ensure the information from the I/O Conversion module tables are reviewed first.
3) Once the 1756 Chassis is selected, select the Conversion Assembly. The Conversion Assembly has the same dimensional foot-print as the 1771 chassis and can use the same mounting hardware. The assembly consists of a base-plate to hold the conversion modules and a cover-plate to protect the modules and to mount the selected 1756 chassis. The combined depth of the conversion assembly with the 1756 chassis mounted is 10.25 inches (Controller w/key) to
10.0 inches (Controller w/o Key).
1771 Chassis
Chassis Parameter (1)
-A1B w/o
PS
-A1B w/PS
Max Slots for I/O 4 4
1756 Equivalent
Chassis
-A4
(3)
3
-A7
6
1771 Chassis
-A2B w/o
PS
8
-A2B w/PS
8
1756 Equivalent
Chassis
1771 Chassis
1756 Equivalent
Chassis
1771 Chassis
1756 Equivalent
Chassis
-A7
(4)
6
-A10
9
-A3B1
12
-A13
(5)
12
-A4B
16
-A17
(6)
16
Chassis Width (2)
9.01
12.61
10.35
14.49
14.01
17.61
14.49
19.02
19.01
23.15
24.01
29.06
Conversion Assembly
1492-MUA1B-A4-A7 1492-MUA2B-A7-A10 1492-MUA3-A10-A13 1492-MUA4-A13-A17
Foot Notes:
1771-A3B is not listed as it is used for 19 inch wide instrumentation panels
Two 1771 width dimensions are provided as some PLC-5 processors have integrated power supplies. Dimension w/PS includes -P1, -P2, etc. Notice that the width dimension of some 1756 chassis exceed the width of the 1771 chassis with or without the power supply. Cover-plate chassis mounting design allows the excess 1756 chassis width to be evenly distributed to both sides, or excess to right or left. Carefully consider this in the conversion
1756-A4 may work in a 1771-A1B application if 4 or less I/O slots were used. Conversion cover-plate is capable to mount -A4 or -A7
1756-A7 may work in a 1771-A2B application if 6 or less I/O slots were used. Conversion cover-plate is capable to mount -A7 or -A10
1756-A10 may work in a 1771-A3B1 application if 10 or less I/O slots were used. Conversion cover-plate is capable to mount -A10 or -A13
1756-A13 may work in a 1771-A4B application if 13 or less I/O slots were used. Conversion cover-plate is capable to mount -A13 or -A17
PN-40377
DIR 10000045373 (Version 00)
Printed in U.S.A.

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