Allen-Bradley 1756-IA8D User Manual

138 Rockwell Automation Publication 1756-UM058G-EN-P - November 2012
Chapter 8 Wiring Diagrams
The 1756 digital I/O modules support these features.
Table 30 - 1756 I/O Module Features
Module Type Features
1756 digital AC input modules • Change of state: Software configurable
• Timestamp of inputs: ±200 µs
• Module keying: Electronic, software configurable
• RTB keying: User-defined mechanical
1756 digital AC output modules • Scheduled outputs: Synchronization within 16.7 seconds maximum, reference to the Coordinated System Time
• Fault states per point: Hold last state, on or off (off is default)
• States in Program mode per point: Hold last state, on or off (off is default)
• Fusing:
– 1756-OA8D, 1756-OA8E: Electronically fused per point
– 1756-OA16: Mechanically fused/group, 3.15 A @ 250V AC slow blow, 1500 A interruption current, Littelfuse p/n
H2153.15
– All other modules: Not protected. A fused IFM is recommended to protect outputs (see publication 1492-TD008
)
• Module keying: Electronic, software configurable
• RTB keying: User-defined mechanical
1756 digital DC input modules • Reverse polarity protection: All modules except 1756-IG16 module
• Change of state: Software configurable
• Timestamp of inputs:
– ±100 µs for sequence of events modules
(1)
– ±200 µs for all other modules
• Module keying: Electronic, software configurable
• RTB Keying: User-defined mechanical
1756 digital DC output modules • Scheduled outputs: Synchronization within 16.7 seconds maximum, reference to the Coordinated System Time
• Fault states per point: Hold last state, on or off (off is default)
• States in Program mode per point: Hold last state, on or off (off is default)
• Fusing:
– 1756-OB8EI, 1756-OB16D, 1756-OB16E, 1756-OB16IEF, 1756-OB16IEFS, 1756-OV16E, 1756-OV32E:
Electronically fused per point
– All other modules not protected. A fused IFM is recommended to protect outputs. See publication 1492-TD008
.
• Module keying: Electronic, software configurable
• RTB keying: User-defined mechanical
1756 digital contact modules • Scheduled outputs: Synchronization within 16.7 seconds maximum, reference to the Coordinated System Time
• Configurable fault states per point: Hold last state, on or off (off is default)
• Configurable states in Program mode per point: Hold last state, on or off (off is default)
• Fusing: Not protected. A fused IFM is recommended to protect outputs (See publication 1492-TD008
)
• Module keying: Electronic, software configurable
• RTB keying: User-defined mechanical
(1) For details, see the ControlLogix Sequence of Events Module Installation Instructions, publication 1756-IN592, and the ControlLogix Sequence of Events Module User Manual, publication 1756-UM528.
IMPORTANT
For the latest I/O module specifications, see the 1756 ControlLogix I/O Modules
Technical Specifications, publication 1756-TD002
.

Allen-Bradley 1756-IA8D Specifications

General

Brand	Allen-Bradley
Model	1756-IA8D
Category	Control Unit
Language	English