• Touch a grounded object to discharge potential static.
• Wear an approved grounding wriststrap.
• Do not touch connectors or pins on component boards.
• Do not touch circuit components inside the equipment.
• Use a static-safe workstation, if available.
• Store the equipment in appropriate static-safe packaging when not in use.
Description:
• Both the 1768-PA3 and the 1768-PB3 power supplies require that a 1768
CompactLogix controller be installed in the same bank as the power supply
before the system is powered.
The power supply sends 24V dc to the controller located either immediately to the
right of the power supply or immediately to the right of the communication and
motion modules.
Power
Supply
Controller
Power supply provides 24V dc power to
controller through the backplane.
1768 CompactLogix System
Controller provides 5V dc
to communication and
motion modules.
Controller provides
5V/24V dc to 1769 I/O
modules.
Communication or
Motion Module
Communication or
Motion Module
1769 I/O Module
1769 I/O Module
1768 CompactLogix Power Supplies 7
Publication 1768-IN001B-EN-P - July 2006
The controller converts the 24V dc to 5V dc and distributes 5V dc and 24V dc
power as required by modules on the backplane. The following list describes
controller power distribution considerations:
• 5V/24V power goes to 1769 I/O modules on the right side of the controller.
• 5V power goes to 1768 communication or motion modules on the left side
of the controller.
• System power-up and power-down may take longer than expected.
• Full power-up should occur within a few seconds of turning on the power
supply. Power-down, however, takes significantly longer. When the power
supply is turned off, the CompactLogix controller uses some power to write
its program to internal memory. During this program write, there is activity
on the controller’s status indicators.
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| Allen-Bradley | 1756-L1 | Allen-Bradley | 1454-9F | Allen-Bradley | 1770-FF |
| Allen-Bradley | 1756-L55 | Allen-Bradley | 1746-IV32 | Allen-Bradley | 1770-XYC |
| Allen-Bradley | 1756-L62S | Allen-Bradley | 1746-OA8 | Allen-Bradley | 1771-ASB |
| Allen-Bradley | 1756-M14 | Allen-Bradley | 1746-OX8 | Allen-Bradley | 1771-IAD |
| Allen-Bradley | 1756-N2 | Allen-Bradley | 1746-P1 | Allen-Bradley | 1771-IR |
| Allen-Bradley | 1756-OB16D | Allen-Bradley | 1746-P2 | Allen-Bradley | 1771-IVN |
| Allen-Bradley | 1756-OF4 | Allen-Bradley | 1746-P4 | Allen-Bradley | 1771-IXHR |
| Allen-Bradley | 1756-OF8 | Allen-Bradley | 1747-BA | Allen-Bradley | 1771-NC6 |
| Allen-Bradley | 1756-PB72 | Allen-Bradley | 1747-DCM | Allen-Bradley | 1771-OFE2 |
| Allen-Bradley | 1756-TBCH | Allen-Bradley | 1747-FC | Allen-Bradley | 1771-OZ |
| Allen-Bradley | 1756-TBNH | Allen-Bradley | 1747-M11 | Allen-Bradley | 1771-OZL |
| Allen-Bradley | 1756-TBS6H | Allen-Bradley | 1747-M13 | Allen-Bradley | 1772-LG |
| Allen-Bradley | 1761-CBL-PM02 | Allen-Bradley | 1756-OB16I | Allen-Bradley | 1783-EMS08T |
| Allen-Bradley | 1762-L24BWA | Allen-Bradley | 1756-BA2 | Allen-Bradley | 1783-MS10T |
| Allen-Bradley | 1768-L43 | Allen-Bradley | 1756-EN2T | Allen-Bradley | 1784-PCMK |
| Allen-Bradley | 1769-ADN | Allen-Bradley | 1756-EN2TR | Allen-Bradley | 1785-L80E |
| Allen-Bradley | 1769-BA | Allen-Bradley | 1756-HYD02 | Allen-Bradley | 1785-LT |
| Allen-Bradley | 1769-IA16 | Allen-Bradley | 1756-IA16I | Allen-Bradley | 1786-RPFM |
| Allen-Bradley | 1769-IQ16 | Allen-Bradley | 1756-IB16D | Allen-Bradley | 1786-TPR |
| Allen-Bradley | 1769-L27ERM-QBFC1B | Allen-Bradley | 1756-IR6I | Allen-Bradley | 1788-DNBO |
E-mail: alex@fenoux.com
Tel.: +86 13338369201
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E-mail: alex@fenoux.com
Tel.: +86 13338369201
Skype: +86 13338369201
WhatsApp: +86 13338369201
