Allen-Bradley 1492 Field Conversion Module Installation Instructions

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.
Conversion Compatibility and
Product I.D. Label
37-Pin Connector for cable 1492-CONCABZ
1492-CM1771-LD005 Conversion Module
WARNING
PN-114277
DIR 10000060088 (Version 01)
Publication 1492-IN035B-EN-E
Printed in U.S.A.
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.
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
Cat. No.
Max
Slots
for
I/O
1771-A1B
4
1771-A2B
8
1756 Chassis
Chassis Width
without
Power
Supply
with
Power
Supply
9.01
12.61
14.01
17.61
Conversion Mounting Assembly
Cat. No.
Max Slots
for
Conversion
Modules
Chassis
Width
1492-MUA1B-A4-A7
4
9.01
14.49
19.02
1492-MUA2B-A7-A10
8
14.01
Cat. No.
Max
Slots
for
I/O
Chassis
Width
1756-A4
3
10.35
1756-A7
6
14.49
1756-A7
1756-A10
6
9
1771-A3B1
12
19.01
1756-A10
1756-A13
9
12
19.02
23.15
1492-MUA3-A10-A13
12
19.01
1771-A4B
16
24.01
1756-A13
1756-A17
12
16
23.15
29.06
1492-MUA4-A13-A17
16
24.01
Foot 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-114277
DIR 10000060088 (Version 01)
Publication 1492-IN035B-EN-E
(2)
III. Compatiblity
Table 2: Bulletin 1771 to 1756 Conversion Modules and Cables
1756
1771
Digital I/O Module Digital I/O Module
1771-IVN
1756-IV32
1492
Conversion Module
1492-CM1771-LD005
1492
Cable
1492-CONCAB005Z
Foot 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-CONCAB010Z
IV. 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
Operating Vibration
Maximum Operating Voltage
Max. Module Operating Current
Per Point:
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)
242.1 g (0.53 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)
30 Vdc
2 Amps
4 Amps
Agency Certifications
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
Pollution Degree
2
Environmental Rating
IP20
NOTICE
PN-114277
DIR 10000060088 (Version 01)
Publication 1492-IN035B-EN-E
(3)
Conversion: 1771-IVN to 1756-IV32
V. Wiring Diagrams
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.
WARNING
Conversion Module
1492-CM1771-LD005
+
10-30V dc (0)
10-30V dc (2)
2
22
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)
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
Cable
1492-CONCAB005Z
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
Black
White
Red
Green
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
White/Red/Blue
1756-IV32
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
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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