Rockwell Automation 1492-CM800-LD007 Field Wire Conv. Module for Modicon B821-108 to 1756-IC16 - Manual (Page 2)

(2) 10000021878 (Version 00)
IV. Conversion Module Wiring Diagram
The following diagrams show the connections from the existing B821-108 swing-arm, through the conversion module, 1492
cable and to the 1756-IB16 or 1756-IC16 input module. The diagrams can be used as an aid in possible system trouble-
shooting.
1756-IB16
1492-CABLE003X
1492-CM800-LD007
Conversion: B821-108 to 1756-IB16 with 1492-CM800-LD007
B821-108 Swing Arm

3 1
1
19
2
3
7
4
8
5
11
6
12
7
17
8
18
9
10
11
4
12
10
13
14
20
15 5
16 6
17 15
16
18
20
14
2
3
+
-
Input 5
Input 7
Input 6
Input 8
Input 1
Input 3
Input 2
Input 4
Group 1 Common
Not Used
Not Used
10
GND-0
IN-0
1
IN-1
2
IN-2
3
IN-3
4
IN-4
5
IN-5
6
IN-6
7
IN-7
8
IN-8
11
IN-9
12
IN-10
13
IN-11
14
IN-12
15
IN-13
16
IN-14
17
IN-15
18
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
GND-1
20
9
GND-0
19
GND-1
9 Group 2 Common
13 Group 3 Common
19 Group 4 Common
Group 1 Supply Volt
Group 2 Supply Volt
Group 3 Supply Volt
Group 4 Supply Volt
Not Used
Not Used
Conversion Module Installation and Application Considerations

The voltage range of the B821-108 module is 10-60V DC and the 1756-IB16 is 10-30V DC. If the input source voltage is
greater than 30V DC, use the 1756-IC16.
 The input delay times for the B821-108 module versus 1756-IB16 module are as follows:
B821-108 1756-IB16
a) Off-to-On Delay 2.5ms (min),11ms (max) 1ms (plus selectable filter)
b) On-to-Off Delay 2.5ms (min),11ms (max) 2ms (plus selectable filter)
 The B821-108 has 4 groups (allowing 4 separate power supplies) and the 1756-IB16 has 2 groups. This module/cable
combination ties Groups 1 & 2 from the B821-108 to Group 0 on the 1756-IB16 and it ties Groups 3 & 4 from the B821-108 to
Group 1 on the 1756-IB16. Field wiring modification must be made to accommodate this if multiple supplies were used. If 4
supplies were used, 2 must be removed. NOTE: To allow for multiple supplies in this conversion, the Inputs do not map directly
to the equivalent input. For example: Input 5 on the B821-108 maps to Input 8 on the 1756-IB16, the user needs to account for
this in the controller program.
 Refer to your B821-108 and 1756-IB16 Installation Manual wiring schematics and diagrams for more details.
[Reference Doc: 41170-756 (Version 03)]
There are several key application considerations and system specifications (bottom of drawing) when
using these components (conversion module, cable and output module). Read and understand these
considerations before installation. WARNING