Allen-Bradley ControlLogix 1756-IA8D User manual

Publication 1756-5.5 - September 1999
Installation Instructions
ControlLogix
AC (79-132V) Diagnostic Module
(Catalog Number 1756-IA8D)
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To: See page:
Prevent Electrostatic Discharge 2
See Removal and Insertion Under Power (RIUP) 2
Understand Compliance to European Union Directive 3
Note the Power Requirements 4
Identify the Module Components 4
Install the Module 5
Key the Removable Terminal Block/Interface Module 6
Wire the Removable Terminal Block 7
Assemble the Removable Terminal Block and the Housing 9
Install the Removable Terminal Block onto the Module 10
Check the Indicators 11
Remove the Removable Terminal Block from the Module 12
Remove the Module 12
See Specifications 13
Understand CSA Hazardous Location Approval 14
Allen-Bradley Drives

2ControlLogix AC (79-132V) Diagnostic Module
Publication 1756-5.5 - September 1999
Prevent Electrostatic Discharge
Removal and Insertion Under Power (RIUP)
ATTENTION
!
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ControlLogix AC (79-132V) Diagnostic Module 3
Publication 1756-5.5 - September 1999
Understand Compliance to European Union Directive
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Allen-Bradley Drives

4ControlLogix AC (79-132V) Diagnostic Module
Publication 1756-5.5 - September 1999
Note the Power Requirements
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Identify the Module Components
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Removable Terminal Block and Housing
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20928-M
Side view Front view
1756-IA8D module RTB door label

ControlLogix AC (79-132V) Diagnostic Module 5
Publication 1756-5.5 - September 1999
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Install the Module
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20861–M 20862–M
21
Align circuit board with top and
bottom chassis guides. Slide module into chassis until module tabs ‘click’.
Printed
Circuit
Board
Locking tab
Allen-Bradley Drives

6ControlLogix AC (79-132V) Diagnostic Module
Publication 1756-5.5 - September 1999
Key the Removable Terminal Block/Interface Module
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20850–M
U-shaped
Keying Band
20851–M
12
0
34567
Wedge-shaped
Keying Tab
Begin keying in
section #6 or #7.
Module side of RTB

ControlLogix AC (79-132V) Diagnostic Module 7
Publication 1756-5.5 - September 1999
Wire the Removable Terminal Block
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For the Spring Clamp RTB
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For the NEMA Screw RTB
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20863–M
Allen-Bradley Drives

8ControlLogix AC (79-132V) Diagnostic Module
Publication 1756-5.5 - September 1999
Wiring example
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12
34
5
6
7
8
910
1112
1314
1516
1718
19
20
47kΩ, 1/2W,
5% resistor
47kΩ, 1/2W,
5% resistor
NOTES: All terminals with the same name are connected together on the module. For example, L2
can be connected to any terminal marked L2-0.
This wiring example shows a single voltage source.
When you daisy chain from a group to other RTBs, alway connect the daisy chain to the
terminal directly connected to the supply wire, as shown above. 40202-M
Resistors are not necessary if Wire Off diagnostic is not used.
To Determine Leakage Resistor
(P/S = Field side power supply)
RLEAKMaximum = (P/S Voltage-19V ac)/1.5mA
RLEAKMinimum = (P/S Voltage-20V ac)/2.5mA
Not used
L2-0
L2-0
L2-0
L2-0
L2-1
L2-1
L2-1
L2-1
L2-1
L1-0 Loss of Field Power
IN-0
IN-1
IN-2
IN-3
IN-4
IN-5
IN-6
IN-7
L1-1 Loss of Field Power
Daisy chain to
other RTBs
Group 0Group 0
Group 1Group 1
L2
L1
Recommended Values
369ROWDJH 5
/($.
:
9DF 43kΩ
9DF 47kΩ
9DF 47kΩ
9DF 51kΩ
1756-IA8D

ControlLogix AC (79-132V) Diagnostic Module 9
Publication 1756-5.5 - September 1999
Assemble the Removable Terminal Block and the Housing
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20852-M
Groove
Groove
Side edge of the RTB
Side edge of the RTB
Strain relief area
1756-TBNH RTB shown for reference
Allen-Bradley Drives

10 ControlLogix AC (79-132V) Diagnostic Module
Publication 1756-5.5 - September 1999
Install the Removable Terminal Block onto the Module
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20853–M 20854–M
Top
guide
Left-side guides
Bottom guide
Locking
tab
Align the top, bottom and left
side guides of the RTB with
the guides on the module.
Press quickly and evenly to seat
the RTB on the module until the
latches snap into place. Slide
the locking tab down to lock the
RTB onto the module.