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Digital I/O Conversion Module
(Cat 1492-CM1771-LD005)
I. Description
This Digital I/O Conversion Module provides for the conversion of (1) 1771, 32 point I/O modules to be converted to
(1) 1756, 32 point I/O module and consists of the following:
(1) 1771 Module (32pt) to (1) 1756 Module (32pt)
(2) Conversion Module: 1492-CM1771-LD005
(1) Cable: 1492-CONCAB005Z (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-LD005 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.
Z
PN-114277
DIR 10000060088 (Version 01)
Publication 1492-IN035B-EN-E
Printed in U.S.A.
Page 2
II. Installation
es:
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 Not
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-114277
DIR 10000060088 (Version 01)
Publication 1492-IN035B-EN-E
(2)
Page 3
III. Compatiblity
es:
.
f
Z
Table 2: Bulletin 1771 to 1756 Conversion Modules and Cables
1771
Digital I/O Module
1756
Digital I/O Module
Conversion Module
1492
1492
Cable
1771-IVN 1756-IV32 1492-CM1771-LD005 1492-CONCAB005Z
t Not
To understand any issues concerning I/O module compatibility, refer to the Installation Manuals for the specific
771 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
ollows:
.0M = 1492-CONCAB010
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)
242.1 g (0.53 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)
30 Vdc
2 Amps
4 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.
PN-114277
DIR 10000060088 (Version 01)
Publication 1492-IN035B-EN-E
(3)
Page 4
V. Wiring Diagrams
Conversion: 1771-IVN to 1756-IV32
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-LD005
10-30V dc (0)
10-30V dc (2)
Input 00
Input 00
Input 01
Input 01
Input 02
Input 02
Input 03
Input 03
Input 04
Input 04
Input 05
Input 05
Input 06
Input 06
Input 07
Input 07
Input 10
Input 10
Input 11
Input 11
+
Input 12
Input 12
Input 13
Input 13
Input 14
Input 14
Input 15
Input 15
Input 16
Input 16
Input 17
Input 17
10-30V dc (0)
10-30V dc (1)
10-30V dc (1)
10-30V dc (2)
10-30V dc (3)
10-30V dc (3)
2
22
3
23
4
24
5
25
6
26
7
27
8
28
9
29
10
30
13
33
14
34
15
35
16
36
17
37
18
38
19
39
20
40
1
11
12
21
31
32
1492-CONCAB005Z
1
Black
2
White
Red
3
Green
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
White/Red/Blue
Cable
18
36
1
19
2
20
3
21
4
22
5
23
6
24
7
25
8
26
9
27
10
28
11
29
12
30
13
31
14
32
15
33
16
34
17
35
1756-IV32
DC-0 (+)
DC-1 (+)
IN-0
IN-16
IN-1
IN-17
IN-2
IN-18
IN-3
IN-19
IN-4
IN-20
IN-5
IN-21
IN-6
IN-22
IN-7
IN-23
IN-8
IN-24
IN-9
IN-25
IN-10
IN-26
IN-11
IN-27
IN-12
IN-28
IN-13
IN-29
IN-14
IN-30
IN-15
IN-31
DC-0 (+)
DC-1 (+)
1771-WN Swing Arm
From 1771-IVN
Conversion Module Installation and Application Considerations
The input delay times for the 1771-IVN module versus 1756-IV32 module are as follows:
1771-IVN 1756-IV32
a) Off-to-On Delay 6ms (+/-2ms) 1ms (plus selectable filter)
b) On-to-Off Delay 6ms (+/-2ms) 2ms (plus selectable filter)
The 1771-IVN has 4 groups (allowing 4 seperate power supplies) and the 1756-IV32 has 2 groups.
This module/cable combination ties Groups 0 & 1 from the 1771-IVN to Group 0 on the 1756-IV32 and it ties Groups 2 & 3
from the 1771-IVN to Group 1 on the 1756-IV32.Field wiring modification must be made to accommodate this if multiple
supplies were used. If 4 supplies were used, 2 must be removed.
Refer to your 1771-IVN and 1756-IV32 Installation Manual wiring schematics and diagrams for more details.
[Reference Doc: 41170-934 (Version 02)]
PN-114277
DIR 10000060088 (Version 01)
Publication 1492-IN035B-EN-E
Printed in U.S.A.
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