Page 1
Digital I/O Conversion Module
(Cat 1492-CM1771-LD004)
I. Description
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-LD004
(1) Cable: 1492-CONCAB005Y (Table 2, Section III)
(1) Conversion Mounting Assembly: 1492-MUA… (Table 1, Section II)
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 V. 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-CONCAB
1492-CM1771-LD004 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-114276
DIR 10000060087 (Version 01)
Publication 1492-IN034B-EN-E
Printed in U.S.A.
Page 2
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.
Table 1: Bulletin 1771 to 1756 Chassis Conversion
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 12 19.01
1771-A4B 16 24.01
Slots
for
I/O
Chassis Width
without
Power
Supply
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
3 10.35
6 14.49
6 14.49
9 19.02
9 19.02
12 23.15
12 23.15
16 29.06
Width
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
Max Slots
for
Conversion
Modules
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.
Chassis
Width
PN-114276
DIR 10000060087 (Version 01)
Publication 1492-IN034B-EN-E
(2)
Page 3
III. Compatiblity
56 I/O
.
Table 2: Bulletin 1771 to 1756 Conversion Modules and Cables
1771
Digital I/O Module
1771-ID16
Digital I/O Module
1756-IA16I 1492-CM1771-LD004 1492-CONCAB005Y
1756-IH16I 1492-CM1771-LD004 1492-CONCAB005Y
1756
1492
Conversion Module
1771-IQ16 1756-IB16I 1492-CM1771-LD004 1492-CONCAB005Y
t Notes:
To understand any issues concerning I/O module compatibility, refer to the Installation Manuals for the specific
1771 and 17
modules involved
The 3 numbers indicate the cable length of each portion of the 1492 Cable. Recommended cable lengths of 0.5M
re 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
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:
Agency Certifications
Pollution Degree
Environmental Rating
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)
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
2 Amps
12 Amps
UL Classified: Under UL File Number E113724
CSA
CE: compliant for all applicable directives
2
IP20
NOTICE
Value
Refer to the Wiring Diagram(s) for
current limits for a specific configuration.
1492
Cable
PN-114276
DIR 10000060087 (Version 01)
Publication 1492-IN034B-EN-E
(3)
Page 4
V. Wiring Diagrams
Conversion: 1771-ID16 to 1756-IA16I
WARNING
L2
L1
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-LD004
1
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
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
12
11
14
13
16
15
18
17
22
21
24
23
26
25
28
27
32
31
34
33
36
35
38
37
9
10
19
20
29
30
39
40
2
1
2
3
1492-CONCAB005Y
4
Orange
5
Blue
4
3
6
5
8
7
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-IA16I
L2-0
IN-0
L2-1
IN-1
L2-2
IN-2
L2-3
IN-3
L2-4
IN-4
L2-5
IN-5
L2-6
IN-6
L2-7
IN-7
L2-8
IN-8
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
1771-WN Swing Arm
From 1771-ID16
Conversion Module Installation and Application Considerations
The input delay times for the 1771-ID16 module versus 1756-IA16I module are as follows:
1771-ID16 1756-IA16I
a) Off-to-On Delay 0.57ms 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 02)]
PN-114276
DIR 10000060087 (Version 01)
Publication 1492-IN034B-EN-E
(4)
Page 5
V. Wiring Diagrams (Continued)
Conversion: 1771-ID16 to 1756-IH16I
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-LD004
1
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
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
12
11
14
13
16
15
18
17
22
21
24
23
26
25
28
27
32
31
34
33
36
35
38
37
9
10
19
20
29
30
39
40
2
1
2
3
1492-CONCAB005Y
4
Orange
5
Blue
4
3
6
5
8
7
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-IH16I
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
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
1771-WN Swing Arm
From 1771-ID16
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 02)]
PN-114276
DIR 10000060087 (Version 01)
Publication 1492-IN034B-EN-E
(5)
Page 6
V. Wiring Diagrams (Continued)
Conversion: 1771-IQ16 to 1756-IB16I
WARNING
Sinking Input Example
-
+
Sourcing
Input
Example
-
+
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-LD004
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
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
2
1
12
11
14
13
16
15
18
17
22
21
24
23
26
25
28
27
32
31
34
33
36
35
38
37
9
10
19
20
29
30
39
40
1
2
1492-CONCAB005Y
3
4
Orange
5
Blue
4
3
6
5
8
7
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-IB16I
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
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
1771-WN Swing Arm
From 1771-IQ16
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 02)]
PN-114276
DIR 10000060087 (Version 01)
Publication 1492-IN034B-EN-E
Printed in U.S.A.
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